JVC AV 56WP74 User Manual

AV-48WP74

AV-56WP74

SERVICE MANUAL

REAR PROJECTION TELEVISION

5242010035

BASIC CHASSIS

AV-48WP74/HA,

SB3

AV-56WP74^/HA

TABLE OF CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-64

No.52105

2003/4

AV-48WP74

AV-56WP74

SECTION 1

PRECAUTIONS

(10) Isolation Check

1.1 SAFETY PRECAUTIONS

(Safety for Electrical Shock Hazard)After re-assembling the

product, always perform an isolation check on the exposed metal

parts of the cabinet (antenna terminals, video/audio input and output

terminals, Control knobs, metal cabinet, screwheads, earphone jack,

control shafts, etc.) to be sure the product is safe to operate without

danger of electrical shock.

(1) The design of this product contains special hardware, many circuits

and components specially for safety purposes. For continued

protection, no changes should be made to the original design unless

authorized in writing by the manufacturer. Replacement parts must

be identical to those used in the original circuits. Service should be

performed by qualified personnel only.

(2) Alterations of the design or circuitry of the products should not be

made. Any design alterations or additions will void the manufacturer's

warranty and will further relieve the manufacturer of responsibility for

personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have special

safety-related characteristics. These characteristics are often not

evident from visual inspection nor can the protection afforded by them

necessarily be obtained by using replacement components rated for

higher voltage, wattage, etc. Replacement parts that have these

special safety characteristics are identified in the parts list of Service

manual. Electrical components having such features are

identified by shading on the schematics and by ( ) on the parts

list in Service manual. The use of a substitute replacement which

does not have the same safety characteristics as the recommended

replacement part shown in the parts list of Service manual may cause

shock, fire, or other hazards.

a) Dielectric Strength Test

The isolation between the AC primary circuit and all metal

parts exposed to the user, particularly any exposed metal part

having a return path to the chassis should withstand a voltage

of 1100V AC (r.m.s.) for a period of one second.

(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance

rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated

200V or more, for a period of one second.)

This method of test requires test equipment not generally

found in the service trade.

b) Leakage Current Check

Plug the AC line cord directly into the AC outlet (do not use a

line isolation transformer during this check.). Using a "Leakage

Current Tester", measure the leakage current from each

exposed metal part of the cabinet, particularly any exposed

metal part having a return path to the chassis, to a known good

earth ground (water pipe, etc.). Any leakage current must not

exceed 0.5mA AC (r.m.s.). However, in tropical area, this must

not exceed 0.2mA AC (r.m.s).

(4) Use isolation transformer when hot chassis.

The chassis and any sub-chassis contained in some products are

connected to one side of the AC power line. An isolation transformer

of adequate capacity should be inserted between the product and the

AC power supply point while performing any service on some

products when the HOT chassis is exposed.

• Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use

a line isolation transformer during this check.). Use an AC

voltmeter having 1000 ohms per volt or more sensitivity in

the following manner. Connect a 1500ohm 10W resistor

paralleled by a 0.15µF AC-type capacitor between an

exposed metal part and a known good earth ground (water

pipe, etc.). Measure the AC voltage across the resistor with

the AC voltmeter. Move the resistor connection to each

exposed metal part, particularly any exposed metal part

having a return path to the chassis, and measure the AC

voltage across the resistor. Now, reverse the plug in the AC

outlet and repeat each measurement. Any voltage

measured must not exceed 0.75V AC (r.m.s.). This

corresponds to 0.5mA AC (r.m.s.).

(5) Don't short between the LIVE side ground and ISOLATED

(NEUTRAL) side ground or EARTH side ground when repairing.

Some model's power circuit is partly different in the GND. The

difference of the GND is shown by the LIVE : ( ) side GND, the

ISOLATED(NEUTRAL) : ( ) side GND and EARTH : ( ) side GND.

Don't short between the LIVE side GND and ISOLATED(NEUTRAL)

side GND or EARTH side GND and never measure with a measuring

apparatus (oscilloscope etc.) the LIVE side GND and

ISOLATED(NEUTRAL) side GND or EARTH side GND at the same

time.

If above note will not be kept, a fuse or any parts will be broken.

(6) The high voltage applied to the picture tube must conform with that

specified in Service manual. Excessive high voltage can cause an

increase in X-Ray emission, arcing and possible component damage,

therefore operation under excessive high voltage conditions should

be kept to a minimum, or should be prevented. If severe arcing

occurs, remove the AC power immediately and determine the cause

by visual inspection (incorrect installation, cracked or melted high

voltage harness, poor soldering, etc.). To maintain the proper

minimum level of soft X-Ray emission, components in the high

voltage circuitry including the picture tube must be the exact

replacements or alternatives approved by the manufacturer of the

complete product.

However, in tropical area, this must not exceed 0.3V AC

(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).

AC VOLTMETER

(HAVING 1000 /V,

OR MORE SENSITIVITY)

0.15 F AC-TYPE

PLACE THIS PROBE

ON EACH EXPOSED

METAL PART

1500 10W

GOOD EARTH GROUND

(7) If any repair has been made to the chassis, it is recommended that

the B1 setting should be checked or adjusted (See ADJUSTMENT

OF B1 POWER SUPPLY).

(8) Do not check high voltage by drawing an arc. Use a high voltage

meter or a high voltage probe with a VTVM. Discharge the picture

tube before attempting meter connection, by connecting a clip lead to

the ground frame and connecting the other end of the lead through a

10kΩ 2W resistor to the anode button.

(9) When service is required, observe the original lead dress. Extra

precaution should be given to assure correct lead dress in the high

voltage circuit area. Where a short circuit has occurred, those

components that indicate evidence of overheating should be

replaced. Always use the manufacturer's replacement components.

(11) High voltage hold down circuit check.

After repair of the high voltage hold down circuit, this circuit shall be

checked to operate correctly.

See item "How to check the high voltage hold down circuit".

POWER CORD

This mark shows a fast

operating fuse, the

letters indicated below

show the rating.

REPLACEMENT WARNING.

Connecting the white line side of power

cord to "WHT" character side.

PWB

White line side

WHT

(No.52105)1-3

AV-48WP74

AV-56WP74

1.2 INSTALLATION

1.2.1 INSTALLATION SITE

(1) The rear of this set is provided with ventilation openings.

Install the set more than 5 cm from a wall and in a location

with good ventilation.

(2) Avoid the following types of locations.

a) Unstable locations (location must be able to

withstand heavy weight).

(more than 5cm)

Wall

b) Locations subjected to direct sunlight.

c) Near stoves or other heating devices.

d) Locations subjected to humidity or oily smoke.

e) Dusty locations.

f) Locations with strong vibration.

VENTILATION OPENING

1.2.2 INSTALLATION ADJUSTMENT

When installing, moving or changing the orientation of the set,

perform static convergence adjustment according to the

following procedure.

Adjusting CRT color convergence have two method, AUTO,

MANUAL and RESET. It adjust on the MENU screen.

NOTE :

• When you adjust the convergence, make sure you

start with the center position (position 5), and work

your way around radial for best results

• When you make the adjustment in the center

(positions 5), you are making the adjustment for the

whale screen. In other positions, you are making the

adjustment only in that area.

• You can reset the adjustment if you do not like the

results, See below.

• If you perform AUTO CONVERGENCE after

performing MANUAL CONVERGENCE, your

manual convergence you performed will be

cancelled.

NOTE :

Please have you TV on for at least 20 minutes before sing this

feature.

This adjustment will be needed only when the colors of the

characters/lines are separated and lack in distinction. If not,

please don't perform the adjustment.

AUTO

(1) Press

the

[MENU]

key,

and

select

the

"CONVERGENCE" in the INITIAL SETUP menu with the

[function up/down] key.

(2) Press the [function left/right] key, then CONVERGENCE

menu appear.

(3) Press the [function up/down] key, and select the

"AUTO".

(10) Press the [MENU] key to end the convergence

adjustment procedure.

RESET

RESET in the CONVERGENCE menu resets all convergence

adjustments to the factory default setting.

(4) Press the [function left/right] key.

(5) he convergence adjustment will start. It will take about 50

seconds.

MANUAL

(1) Press

the

[MENU]

key,

and

select

the

"CONVERGENCE" in the INITIAL SETUP menu with

[function up/down] key.

(2) Press the [function left/right] key, the CONVERGENCE

menu appears.

(3) Press the [function up/down] key, and select the

"MANUAL".

(4) Press the [function left/right] key, then CONVERGENCE

adjustment screen appear. [Fig.1]

Fig.1

• If all the crosses are white, no convergence

adjustment is needed.

(5) Select the location you want to adjust by using the

[number (2/4/5/6/8)] keys on the remote control unit.

[Fig.2]

(6) Press the [SELECT] key to change the color of the box

to the color of the cross you want to adjust (red or blue).

• You cannot adjust the green cross.

Fig.2

(7) Use the [function up/down] key and the [function left/

right] keys to adjust the position of the cross.

(8) Adjust the three colors crosses until they overlap and

appear as a single white cross.

(9) Press the [OK] key.

1-4 (No.52105)

AV-48WP74

AV-56WP74

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 FEATURES

• New chassis design enable use of an interactive on screen control.

• 2-3 PULL DOWN : You can enjoy DVD movies at the highest picture quality.

• MOTION COMPENSATION : With this function, the seamless reproduction of dynamic motion on the screen has been realized.

• Bullet-in DSD (Digital Supper Detail) circuit and 3 dimension Y/C separate circuit.

• Receive DTV broadcast (1080i / 720p / 480p / 480i)

• Built-in HDCP / Component (Y / Pb / Pr) input.

• Built-in Hyper Sound, BBE circuit.

2.2 FUNCTIONS

FRONT CONTROL KEY & TERMINAL

MENU Button ( OPERATE

)

CHANNERL -/+ Button ( OPERATE

VOLUME -/+ Button

)

MAIN POWER Button

POWER LED (Blue)

SUPER

FOCUS

INPUT4

( AUDIO / VIDEO / S-VIDEO )

OPERATE

S-VIDEO

VIDEO

L / MONO

INPUT4

REAR TERMINAL

DIGITAL IN

( DVI-D Signal Link 19pin )

INPUT 1

( AUDIO / VIDEO / S-VIDEO )

DIGITAL IN

INPUT 2

( AUDIO / VIDEO / S-VIDEO )

INPUT 3

( AUDIO / VIDEO )

SPEAKER INPUT

16 45W MAX

COMPONENT VIDEO INPUT 1

( Y / Pb / Pr )

COMPONENT VIDEO INPUT 2

( Y / Pb / Pr )

SUBWOOFER AUDIO OUT

OUT

SPEAKER INPUT

COMPONENT VIDEO

INPUT-2 INPUT-1

AUDIO

VIDEO S-VIDEO

OVER

INPUT-3

INPUT-2

INPUT-1

SUBWOOFER / AUDIO OUT

AV COMPULINK

AUDIO

OVER

AV COMPULINK

AUDIO INPUT (For DIGITAL IN)

(No.52105)1-5

AV-48WP74

AV-56WP74

REMOTE CONTROL UNIT [RM-C1200G]

POWER Key

ASPECT Key

TV CATV VCR DVD

POWER

ASPECT

VCR / DVD Switch

TV / CATV Switch

Input select Keys

THEATER PRO Key

SLEEP TIMER Key

DISPLAY Key

MULTI SCREEN

SPLIT

POP

INDEX EZ SURF

FREEZE

INPUT1

SWAP

SELECT

INPUT2

INPUT3

INPUT4

MUTING Key (memory Key)

100+

RETURN+

/TV

Function up / down / right / left Keys

(CH + / CH - / VOL + / VOL - Keys)

VIDEO

THEATER NATURAL

DIGITAL-IN

STATUS

PRO

CINEMA

SOUND

LIGHT

C.C.

SLEEP TIMER DISPLAY

MENU Key

MUTING

MULTI SCREEN operation Keys

Number (1~0)Keys

100+ Key

VOL

RETURN+ / TV Key

VIDEO STATUS Key

NATURAL CINEMA Key

LIGHT Key

BACK

VCR/DVD

POWER

VCR CHANNEL

PREV NEXT

TV/VCR

REW

PLAY

PAUSE

STOP

REC

SOUND Key

OPEN/CLOSE

STILL/PAUSE

C.C.(Closed Caption) Key

OK Key

RM-C1200G

BACK Key

VCR / DVD operation Keys

1-6 (No.52105)

AV-48WP74

AV-56WP74

DIGITAL-IN TERMINAL FUNCTIONS

PIN ASSIGNMENT

No.

Pin name

RX2-

RX2+

GND2/ 4

RX4-

RX3+

GND

HTPLG

RX0-

RX4+

SCL

RX0+

GND0/5

RX5-

SDA

RX1-

RX5+

GNDC

TXC+

TXC-

RX1+

GND1/3

RX3-

(No.52105)1-7

AV-48WP74

AV-56WP74

2.3 TECHNICAL INFORMATION

2.3.1 MAIN MICRO COMPUTER (CPU) FUNCTION (MN102H75K)

Pin No.

Pin name

CLK SW2

I/O

Function

IP clock switch

Pin No.

Pin name

I/O

Function

--------

ON_TIM

CONVER_RXD

CONVER TXD

SBT1

Lighting for ON TIMER

Convergence control

--------

/MICON_V

LB_PRO

V.sync for OSD

Low B protection detection

--------

/RST

Main cpu reset input

--------

/TEST

+3.3V

--------

OSD_YS

OSD Ys output

--------

EE_ABL

CHROMA

DC_COTL

ACL control

--------

Chroma / gamma control

DC, control

A_MU

Audio muting

H sync input

Monitor sound out muting

Keep for OSD

/MICON_H

M_MU

--------

P46,OSDXI

P45,OSDXO

SDA2

TU2_AID

/LOB_POW

COMPULINK

/POWERGOOD

MECA_ON

/MAIN_POW

Main AFC input

Low B power control

AV COMPULINK lll input

Power condition check

Machine SW interrupt

Main power control

--------

Keep for OSD

I/O I C bus (CLK) for MTS

AC_IN

AC (60Hz) input

SCL2

I C bus (DATA) for MTS

TU_POW

VCOI

Tuner power control

LPF input

PDO

LPF output

/B1 POW

C/N

B1 power control

AFC voltage input

X-ray protection detection

--------

/IP_RESET

OSD_YM

OSD_B

POWER_LED

OSD_G

OSD_R

VREF

Reset

OSD YM output

OSD blue output

Lighting for POWER LED

OSD green output

OSD red output

--------

X_RAY

KEY2

Front key input 2

Front key input 1

KEY1

SCL1

I C bus (CLK) for EEP-ROM

SDA1

I/O I C bus (SDA) for EEP-ROM

IP_ERR

IREF

AMDP program load detect.

--------

REMO

Remote control input

--------

COMP

--------

VSS

GND

AVDD

+3.3V

OSC2

4MHz clock oscillation

+3.3V

CLL

For sub CCD

STD VOL for sub CCD

For sub CCD

--------

OSC1

VREFLS

SUB_CCD

VDD

SCL0

I C bus (CLK) for general

AP_CLK

SDA0

--------

VSS

GND

I/O I C bus (SDA) for general

MAIN_CCD

VREFHS

CLH

For main CCD

STD VOL for main CCD

For main CCD

+3.3V

--------

VDD/VPP

CLK SW1

P_MU

Picture muting

IP clock switch

1-8 (No.52105)

AV-48WP74

AV-56WP74

2.4 MAIN PARTS LOCATION

2.4.1 PWB ASS'Y ARRANGEMENT

The PWB ASS'Y is indicated below.

PWB ASS’Y NAME

MAIN PWB ASS'Y

AV-48WP74

SSB-1070A-M2

SSB0R368A-M2

SSB0D070A-M2

SSB-2070A-M2

SSB0H068A-M2

SSB-9068A-M2

SSB0L268A-M2

SSB-5068A-M2

SSB0K070A-M2

--------

AV-56WP74

SSB-1069A-M2

SSB0R368A-M2

SSB0D069A-M2

SSB-2069A-M2

SSB0H068A-M2

SSB-9068A-M2

SSB0L268A-M2

SSB-5068A-M2

SSB0K069A-M2

--------

RECEIVER PWB ASS'Y

MI-COM & DIST MODULE PWB ASS'Y

POWER & DEF PWB ASS'Y

DEF OSC PWB ASS'Y

LINE FILTER PWB ASS'Y

FRONT RELAY PWB ASS'Y

CONVERGENCE OUT PWB ASS'Y

DIGITAL CONVERGENCE MODULE PWB ASS'Y

DIGITAL INPUT MODULE PWB ASS'Y

REMOCON SENSOR PWB ASS'Y

R CRT SOCKET PWB ASS'Y

G CRT SOCKET PWB ASS'Y

B CRT SOCKET PWB ASS'Y

G VM PWB ASS'Y

SSB-8068A-M2

SSB-3168A-M2

SSB-3268A-M2

SSB-3368A-M2

SSB-7268A-M2

SSB0L068A-M2

SSB-8068A-M2

SSB-3168A-M2

SSB-3268A-M2

SSB-3368A-M2

SSB-7268A-M2

SSB0L068A-M2

FRONT CONTROL PWB ASS'Y

FRONT CONTROL ASS'Y

PROJECTION UNIT

CRT SOCKET VM

FRONT CONTROL

PWB

PWB (R/G/B)

PWB (G only)

REMOCON SENSOR

PWB

DIGITAL CONVERGENCE

MODULE PWB

DEF OSC

PWB

DIGITAL INPUT

MODULE PWB

POWER & DEF

PWB

CONVERGENCE OUT

PWB

FRONT RELAY

MAIN PWB

PWB

MI-COM & DIST

AV TERMANEL BOARD

MODULE PWB

RECEIVER PWB

LINE FILTER

PWB

(This figure is only MAIN UNIT)

(No.52105)1-9

AV-48WP74

AV-56WP74

2.5 SCREEN HANDLING CAUTIONS

2.5.1 SCREEN STORAGE

Store the SCREEN ASS'Y in a standing position in order to avoid deformation. If the screen is stored horizontally, there is risk of

deforming the screen face.

When necessary to place the SCREEN ASS'Y horizontally, position the screen side upwards and sure to place spacers between the

screen and resting site (floor or stand etc.) to prevent the screen from sagging.

2.5.2 SCREEN SURFACE

Since the screen surface is easily scratched or soiled, use ample care when handling.

DISASSEMBLY PROCEDURE

FRONT CABINET

If the screen or screen panel need to

be replaced, remove the 24 screws A.

SCREEN BRACKET

(TOP)

SCREEN BRACKET

(RIGHT)

SENSOR

A( x 7)

Leave the screen with protector fresnel

lens and double lenticular lens attached.

If cannot be disassembled further.

A( x 5)

SENSOR

SCREEN

SENSOR

SCREEN BRACKET

(BOTTOM)

SCREEN BRACKET

(LEFT)

A( x 7)

2.6 PROJECTION UNIT REPLACEMENT

2.6.1 ADJUSTMENT DURING REPLACEMENT

When replacing the three R, G and B projection units, first replace the R and B units and perform focus / screen / raster centering

adjustments with reference to the G unit. Then replace the G unit and perform G focus / screen / convergence adjustment. Finally

perform R & B convergence adjustments. Use care to simultaneously removes all three-projection units.

2.6.2 DISASSEMBLY CAUTION

The projection units include locations that are not to be disassembled during service. When replacing projection unit parts,

disassemble to the state indicated in the figure below.

The figure indicates screws and wires that are not to be removed. Use care not to remove these.

R CRT SOCKET PWB ASS'Y

G CRT SOCKET PWB ASS'Y

B CRT SOCKET PWB ASS'Y

Deflection yoke wires : to connector on POWER & DEF. PWB ASS'Y.

[R="RHV", G="GHV", B="BHV"]

Convergence yoke wires : to connector on CONVERGENCE PWB ASS'Y.

[R="R", G="G", B="B"]

PC MAGNET

Check that tape is applied to the CRT neck.

If absent, the deflection yoke can dislodge.

PC MAGNET

TAPE

Do not remove screws

LENS ASS'Y

VM PWB (G only)

ANODE wires : to DIVIDER

DEF. / CONVER. YOKE

CRT ASS'Y (COUPLER ASS'Y)

Do not disassembly

LENS ASS'Y SCREW ( x 4)

1-10 (No.52105)

AV-48WP74

AV-56WP74

2.7 DISASSEMBLY PROCEDURE

SPEAKER WIRE

SPEAKER

(WOOFER)

• Make sure that the power cord is pulled out from the AC outlet.

2.7.1 SPEAKER GRILLE

(1) Remove 4 screws [ A ] from rear side.

(2) Open the door of the FRONT CONTROL BOX and remove

2 screws [ B ] from front side.

(3) Take out the SPEAKER GRILLE.

2.7.2 SPEAKER (WOOFER)

• Take out the SPEAKER GRILLE

(1) Remove 4 screws [ C ].

SPEAKER

(TWEETER)

(2) Take out the WOOFER.

(3) Disconnect the speaker wire from speaker terminal.

*Remove the both side speaker same manner.

2.7.3 SPEAKER (TWEETER)

• Take out the SPEAKER GRILLE

(1) Remove 2 screws [ D ].

FRONT CONTROL

BOX

(2) Take out the TWEETER.

(3) Disconnect the speaker wire from speaker terminal.

*Remove the both side speaker same manner.

FRONT BOARD

SPEAKER GRILL

2.7.4 FRONT BOARD

• Take out the SPEAKER GRILLE.

(1) Remove 4 screws [ E ].

Fig.1

(2) Take out the FRONT BOARD.

2.7.5 FRONT CONTROL BOX

• Take out the SPEAKER GRILLE.

(1) Remove 4 screws [ F ] attaching the FRONT CONTROL

BOX.

(2) Disconnect the connector [BH], [R], [BG] on the FRONT

CONTROL PWB.

(3) Take out the FRONT CONTROL BOX.

2.7.6 FRONT CONTROL PWB

• Take out the SPEAKER GRILLE.

• Take out the FRONT CONTROL BOX.

(1) Remove 3 screws [ G ] from rear side of FRONT

CONTROL BOX.

(2) Take out the FRONT CONTROL PWB.

FRONT CONTROL BOX

REAR SIDE

FRONT CONTROL PWB

Fig.2

CAUTION AT DISASSEMBLY

48WP74CP-S : DIGITAL INPUT MODULE [AV-48WP74]

56WP74CP-S : DIGITAL INPUT MODULE [AV-56WP74]

Prior to disassembly, unplug the power code from the AC outlet

without fail. (Turn the power "off".)

Short the SB connector [1] pin and [2] pin of the DIGITAL INPUT

MODULE. (At the time of assembling)

Before the rear panel is inserted into the cabinet, release the

short-circuit between the SB connector [1] pin and [2] pin of the

DIGITAL INPUT MODULE.

After releasing the short-circuit between the SB connectors, do

not turn the power on until the rear panel is inserted into the

cabinet.

Negligence in carrying out the above steps may cause the

inactivation of the TV.

AV JACK BOARD

connector

POWER CORD

(No.52105)1-11

AV-48WP74

AV-56WP74

2.7.7 SCREEN ASS'Y

SCREEN ASS'Y

• Take out the SPEAKER GRILLE.

• Take out the FRONT CONTROL BOX.

(1) Remove the 2 screws [ H ] under the SCREEN ASS'Y from

front side.

(2) Remove 10 screws [ I ] from rear side.

(3) Take out the connector [ CN00Z ].

(4) Take out the SCREEN ASS'Y.

NOTE :

• Please place the SCREEN ASS'Y on a flat table without

fail.

• Because of the large size, at least two parsons are

recommended for removal and reassemble.

• Use core not to scratch the screen during work.

• During assembly, be sure to engage the left and right tabs

with the cabinet mounting positions.

CN00Z

• When supporting the SCREEN ASS'Y, grasp the both

sides of the screen panel instead of the upper side of the

screen panel.

Fig.3

2.7.8 MIRROR

• Take out the SPEAKER GRILLE.

• Take out the FRONT CONTROL BOX.

• Take out the SCREEN ASS'Y.

(1) Remove 2 screws [ J ] attaching the mirror stopper.

(2) Raise slightly to disengage of the mirror from the hooks.

(3) Take out the MIRROR.

MIRROR

NOTE :

• The MIRROR is front-coated. Do not touch the front of the

MIRROR.

• At least 2 persons are recommended for removable and

reassemble.

MIRROR STOPPER

Fig.4

1-12 (No.52105)

AV-48WP74

AV-56WP74

2.7.9 REAR PANEL

(1) Loosen 7 screws [ K ].

(2) Remove 4 screws [ L ].

(3) Raise slightly REAR PANEL upward.

(4) Take out the REAR PANEL.

NOTE :

• Before the rear panel is inserted into the cabinet, release

the short-circuit between the [SB] connector (1) pin and

(2) pin of the DIGITAL INPUT UNIT. (Refer to "CAUTION

AT DISASSEMBLY" on Page 11).

PARTITION

• After releasing the short-circuit between the [SB]

connectors, do not turn the power on until the rear panel

is inserted into the cabinet.

Prior to starting the work, be sure to read the following

written instructions on the CAUTION LABEL attached to the

REAR PANEL.

UNPLUG THE POWER CORD FROM AC OUTLET BEFORE

OPEN THE REAR COVER (PANEL).

When the rear cover (panel) is removed, follow "CAUTION AT

DISASSEMBLY" procedure in the service manual before

plugging the TV's power cord into an AC outlet.

REAR PANEL

Failure to follow the procedure will result in PERMANENT

damage to some of the television features.

Fig.5

2.7.10 PARTITION

• Take out the REAR PANEL.

(1) Pull out the PARTITION back ward.

2.7.11 REAR COVER

• Take out the SPEAKER GRILLE.

• Take out the FRONT CONTROL BOX.

• Take out the SCREEN ASS'Y.

REAR COVER

(1) Remove 2 screws [ M ]. (Fig.5)

(2) Remove 2 screws [ N ] from front side.

(3) Slightly pull for backside to disengage of the REAR

COVER from hooks.

BRACKET

(4) Take out the REAR COVER.

• Because of the large size, at least two persons are rec-

ommended for removal and reassemble.

Fig.6

(No.52105)1-13

AV-48WP74

AV-56WP74

2.7.12 MAIN UNIT

• Take out the SPEAKER GRILLE.

• Take out the connector [BH], [R], [BG] on the FRONT

CONTROL PWB.

MAIN UNIT

• Take out the REAR PANEL.

(1) Remove 4 screws [ O ] from front side.

(2) Remove 1 screw [ P ] and 3 screws [ Q ] attaching the

MAIN CHASSIS and BODY.

REAR SIDE

(3) Pull out the MAIN UNIT rear side.

NOTE :

• Except for confirmation of projection of images on the

screen and audio output through the speakers, the

removed MAIN UNIT is still workable in the same state as

if it is still built in the TV set. Therefore, the MAIN UNIT can

be removed, if necessary, for board diagnosis, electric

testing, etc. apart from confirmation of screen images and

audio output.

• When wire clamps are removed during work, use care to

restore them precisely to their original positions.

Performance can be affected if these are not returned to

the original positions.

BODY

Fig.7

• Because of the large size, at least two persons are

recommended for removal and reassemble.

• When carrying the MAIN UNIT, use care not to drop,

shock or shake it.

• Do not stain or damage the lens of the PROJECTION

UNIT.

• Do not look through the PROJECTION UNIT.

2.7.12.1 CHECKING THE P.W. BOARD

When checking the MAIN PWB, POWER & DEF PWB, etc., raise

the MAIN UNIT with the HV DIVIDER side down for the sake of

convenience. You can checking the POWER & DEF PWB and

CONVERGENCE OUT PWB.

2.7.13 LINE FILTER PWB

• Take out the REAR PANEL.

• Take out the AV TERMINAL BOARD. (Refer to next page)

(1) Disconnect the connector [B], [F] on the LINE FILTER

PWB.

(2) Remove 3 screws [ R ] attaching the LINE FILTER

BRACKET and earth wire.

LINE FILTER BRACKET

(3) Remove 3 screws [ S ] attaching LINE FILTER PWB.

(4) Take out the LINE FILTER PWB.

LINE FILTER PWB

LINE FILTER BRACKET

Fig.8

1-14 (No.52105)

AV-48WP74

AV-56WP74

2.7.14 AV TERMINAL BOARD

• Take out the REAR PANEL

(1) Remove 9 screws [ T ].

(2) Remove 1 screws [ U ].

AV TERMINAL

BOARD

(3) Pull out the POWER CORD CLAMP from AV TERMINAL

BOARD left side.

(4) Remove the nut [ V ] attaching the ANTENNA TERMINAL.

(5) Take out the AV TERMINAL BOARD.

DIGITAL INPUT

MODULE

2.7.15 DIGITAL INPUT MODULE

• Take out the REAR PANEL

(1) Remove 2 screws [ W ] from rear side of the AV TERMINAL

BOARD.

ANTENNA TERMINAL

(2) Take out the DIGITAL INPUT MODULE.

NOTE :

• When removing the DIGITAL INPUT MODULE, refer to

the "CAUTION AT DISASSEMBLY" section on page 11.

POWER CORD

CLAMP

POWER CORD

Fig.9

2.7.16 MAIN CHASSIS

• Take out the REAR PANEL.

• Take out the AV TERMINAL BOARD.

• Take out the LINE FILTER BRACKET.

(1) Remove 2 screws [ X ] both side of the MAIN CHASSIS.

(2) Remove 1 screws [ Y ] attaching the earth wire.

(3) Remove 1 screw [ P ] attaching the MAIN CHASSIS and

BODY.(Fig.7)

EARTH WIRE

(4) Pull out the MAIN CHASSIS for back side.

NOTE :

• If necessary, remove the anode wires, connectors,

respectively.

MAIN CHASSIS

Fig.10

(No.52105)1-15

AV-48WP74

AV-56WP74

2.7.17 PROJECTION UNIT

• Take out the SPEAKER GRILLE

• Take out the FRONT CONTROL BOX

• Take out the REAR PANEL

PROJECTION UNIT

• Take out the MAIN UNIT.

(1) Take out the CRT SOCKET PWB.

(2) Remove 4 screws [ Z ] attaching the PROJECTION UNIT.

(3) Pull out the PROJECTION UNIT, upward.

NOTE :

REMOCON

SENSOR PWB

• Refer to "PROJECTION UNIT REPLACEMENT" on page

10 when taking out and replacing the PROJECTION

UNIT.

HV DIVIDER

• When wire clamps are removed during work, use care to

restore them precisely to their original positions.

Performance can be affected if these are not returned to

the original positions.

Turn

Pull

2.7.18 HV DIVIDER

• Take out the REAR PANEL

(1) Remove 1 screws [ a ] attaching the HV DIVIDER.

(2) Take out the HV DIVIDER.

Fig.11

Wires of the transformer (FBT) and CRT of each

PROJECTION UNIT can be removed by turning the

connector portions.

NOTE :

• If necessary, remove the anode wires, and replacing the

HV DIVIDER, take care to correctly engage the [ b ]

connector.

2.7.19 REMOCON SENSOR PWB

• Take out the REAR PANEL

(1) Remove 1 screws [ c ] attaching the REMOCON SENSOR

PWB.

(2) Take out the REMOCON SENSOR PWB.

1-16 (No.52105)

AV-48WP74

AV-56WP74

2.8 REPLACEMENT OF CHIP COMPONENT

2.8.1 CAUTIONS

(1) Avoid heating for more than 3 seconds.

(2) Do not rub the electrodes and the resist parts of the pattern.

(3) When removing a chip part, melt the solder adequately.

(4) Do not reuse a chip part after removing it.

2.8.2 SOLDERING IRON

(1) Use a high insulation soldering iron with a thin pointed end of it.

(2) A 30w soldering iron is recommended for easily removing parts.

2.8.3 REPLACEMENT STEPS

1. How to remove Chip parts

[Resistors, capacitors, etc.]

2. How to install Chip parts

[Resistors, capacitors, etc.]

(1) As shown in the figure, push the part with tweezers and

alternately melt the solder at each end.

(1) Apply solder to the pattern as indicated in the figure.

(2) Grasp the chip part with tweezers and place it on the

solder. Then heat and melt the solder at both ends of the

chip part.

(2) Shift with the tweezers and remove the chip part.

[Transistors, diodes, variable resistors, etc.]

(1) Apply solder to the pattern as indicated in the figure.

(2) Grasp the chip part with tweezers and place it on the

solder.

(1) Apply extra solder to each lead.

SOLDER

(3) First solder lead A as indicated in the figure.

(2) As shown in the figure, push the part with tweezers and

alternately melt the solder at each lead. Shift and remove

the chip part.

(4) Then solder leads B and C.

Note :

After removing the part, remove remaining solder from the

pattern.

(No.52105)1-17

AV-48WP74

AV-56WP74

2.9 MEMORY IC REPLACEMENT

2.9.1 MEMORY IC

This memory IC stores data for proper operation of the video and

deflection circuits.

SERVICE MENU

When replacing, be sure to use an IC containing this (initial

value) data.

1.PICTURE/SOUND 7.CONVER BD

2.YC SEP 8.PP

3.WHITE BALANCE 9.IP

4.MEMORY SETUP 0.GCR

5.RF AFC

6.CONVER A

Fig.1

2.9.2 MEMORY IC REPLACEMENT PROCEDURE

(1) Power off

SERVICE MENU SELECT KEY

Switch off the power and disconnect the power cord from

the wall outlet.

(2) Replace the memory IC

TV CATV VCR DVD

POWER

ASPECT

Initial value must be entered into the new IC.

(3) Power on

Connect the power cord to the wall outlet and switch on the

power.

(4) SERVICE MENU setting

POWER

MULTI SCREEN

INDEX EZ SURF

SPLIT

POP

FREEZE

INPUT1

SWAP

SELECT

INPUT2

INPUT3

INPUT4

NUMBER

a) Press [SLEEP TIMER] key and, while the indication of

SLEEP TIMER 0 MIN is being displayed, press

[DISPLAY] key and [VIDEO STATUS] key on the

remote control unit (Fig.2) simultaneously.

b) The SERVICE MENU screen of Fig.1 is displayed.

c) Verify what to set in the SERVICE MENU, and set

whatever is necessary (Fig.1).

100+

RETURN+

/TV

DISPLAY

VIDEO

STATUS

THEATER NATURAL

VIDEO

DIGITAL-IN

STATUS

PRO

CINEMA

SOUND

SLEEP

TIMER

SLEEP TIMER DISPLAY

LIGHT

C.C.

FUNCTION

(UP)

MUTING

MEMORY

(MUTING)

FUNCTION

(RIGHT)

VOL

FUNCTION

(LEFT)

Refer to the SERVICE ADJUSTMENT for setting.

d) Press the [BACK] key twice to return normal screen.

(5) Receive channel setting

BACK

VCR/DVD

POWER

VCR CHANNEL

PREV NEXT

TV/VCR

FUNCTION

(DOWN)

REW

PLAY

Refer to the OPERATING INSTRUCTIONS (USER'S

GUIDE) and set the receive channels (Channels Preset) as

described.

PAUSE

STOP

REC

OPEN/CLOSE

STILL/PAUSE

(6) User settings

RM-C1200G

Check the user setting items according to after page.

Where these do not agree, refer to the OPERATING

INSTRUCTIONS (USER'S GUIDE) and set the items as

described.

Fig.2

2.9.3 SERVICE ADJUSTMENT ITEM

Setting item

1.PICTURE / SOUND

AUDIO

Item No.

Remark

Setting item

7.CONVER B

Convergence adjustment

8.PP

Multi-picture adjustment and ADM001~ADM034 Do not adjust

Item No.

------

Remark

A01~A27

S01~S99

D01~D32

F01~F70

VIDEO

DEFLECTION

FACTORY setting

2.YC SEP

setting

PPA001~PPA008 Do not adjust

PPB001~PPB036 Do not adjust

PPC001~PPC008 Do not adjust

PPD001~PPD025 Do not adjust

YC separation setting

YCM001~YCM185 Do not adjust

YCS001~YCS114 Do not adjust

3.WHITE BALANCE

9.IP

LOW LIGHT / HIGH LIGHT BR, DRV R, DRV B,

DIST process setting

IPA001~IPA120

Do not adjust

adjustment

CWT R, CWT G,

CWT B

4.MEMORY SETUP

5.RF AFC

Tuner AFC setting

6.CONER A

------

Do not adjust

IPB001~IPB079

IPC001~IPC044

IPD001~IPD026

IPE001~IPE015

Do not adjust

TUNER, AFC,FINE Do not adjust

Convergence adjustment

CPA01~CPA08

CCA01~CCA09

0.GCR

Ghost reduction setting

Not use

CBA01~CBA80

Do not adjust

1-18 (No.52105)

AV-48WP74

AV-56WP74

2.9.4 SHIPPING FACTORY SETTING

VIDEO STATUS MEMORY (NTSC / 480p)

Setting value

Item

TINT

COLOR

TEMPERATURE

COLOR

PICTURE

BRIGHT

DETAIL

STANDARD

THEATER

DYNAMIC

GAME

LOW

HIGH

-10

HIGH

(HD)

Setting value

PICTURE

Item

COLOR

TEMPERATURE

TINT

COLOR

BRIGHT

DETAIL

STANDARD

THEATER

DYNAMIC

GAME

LOW

HIGH

LOW

HIGH

-10

CHANNEL SETTING (CHANNEL SUMMARY)

Band

CH display

Band

CH display

VHF LOW

SUPER

VHF HIGH

UHF

SUBMID

HYPER

A-4

A-3

A-2

W+11

W+12

W+17

W+23

MID

(No.52105)1-19

AV-48WP74

AV-56WP74

SHIPPING FACTORY SETTING (USER SETTING)

Setting item Setting value

Setting item

Setting value

POWER

OFF

CABLE-02

TINT / COLOR / PICTURE/

BRIGHT / DETAIL

Refer to setting of Video status

memory at shipping factory

setting

CHANNEL

VOLUME

INPUT

COLOR TEMPERATURE

DIG. NOISE CLEAR

HIGH

OFF

DISPLAY

OFF

AUTO

REGULAR

DYNAMIC

BASS / TREBLE / BALANCE

MTS

Center

STEREO

NATURAL CINEMA

SLEEP TIMER

ASPECT

VIDEO STATUS

SOUND

A.H.S

BBE

SET CLOCK

ON / OFF TIMER

LANGUAGE

Unnecessary to set

ENG

OFF

NOISE MUTING

CLOSED CAPTION

FRONT PANEL LOCK

HYPER SURROUND

SPLIT SOURCE

POP SOURCE

OFF

OFF ( CC1 / T1 )

OFF

left side : CA 02

right side : CA 04

AUTO SHUT OFF

AUTO TUNER SET UP

DIGITAL-IN

( at 480p signal input )

CHANNEL SUMMARY

OFF

Unnecessary to set

SIZE 1

left side : CA 02

right upper : CA 04

right center : CA 05

right bottom : CA 07

Refer to Last memory

(CH. summary)

OFF

V-CHIP

SET LOCK CODE

AUTO DEMO

Unnecessary to set

OFF

VERTICAL POSITION

CENTER CH INPUT

XDS ID

Center

OFF

CONVERGENCE

POWER INDICATOR

Optimum condition

HIGH

1-20 (No.52105)

AV-48WP74

AV-56WP74

SECTION 3

ADJUSTMENTS

3.1 ADJUSTMENT PREPARATION

3.2 ADJUSTMENT EQUIPMENT

(1) You can make the necessary adjustments for this unit with

either the Remote Control Unit or with the adjustment tools

and parts as given below.

(2) Adjustment with the Remote Control Unit is made on the

basis of the initial setting values, however, the new setting

values which set the screen to its optimum condition may

differ from the initial settings.

(1) DC voltmeter (or digital voltmeter)

(2) Oscilloscope

(3) Signal generator (Pattern generator)

[NTSC / 480i / 480p / 720p / 1080i / HDCP]

(4) TV audio multiplex signal generator

(5) Remote control unit

(3) Make sure that AC power is turned on correctly.

(4) Turn on the power for set and test equipment before use,

and start the adjustment procedures after waiting at least

30 minutes.

(5) Unless otherwise specified, prepare the most suitable

reception or input signal for adjustment.

(6) Never touch any adjustment setting value which are not

specified in the list for this adjustment.

(7) Presetting before adjustment

Unless otherwise specified in the adjustment instructions,

preset the following functions with the remote control unit:

• SETTING POSITION

Setting item

VIDEO STATUS

Setting position

STANDARD

Setting item

Setting position

ASPECT

FULL

Center

BASS / TREBLE / BALANCE

HYPER SURROUND

Center

OFF

VERTICAL POSITION

BBE

TINT / COLOR / PICTURE /

BRIGHT / DETAIL

Center

ON/OFF TIMER

COLOR TEMPERATURE

DIGITAL NOISE CLEAR

HIGH

OFF

AUTO SHUTOFF

OFF

3.3 ADJUSTMENT FLOWCHART

WHEN REPLACING SCREEN AND PROJECTION UNIT

• Contains only the main adjustments. Also confirm other adjustments as required.

1 Projection unit

3 Projection unit

SCREEN

Install projection tube

LENS FOCUS

Install projection tube

LENS FOCUS

G convergence

disturbed

BEAM SPOT

G CONVERGENCE

CRT FOCUS

SCREEN & LOW LIGHT

G CONVERGENCE

R CONVERGENCE

B CONVERGENCE

R CONVERGENCE

B CONVERGENCE

CONVERGENCE

(match to unreplaced tube)

HIGH LIGHT

END

HIGH LIGHT

END

(No.52105)1-21

AV-48WP74

AV-56WP74

3.4 ADJUSTMENT LOCATION (1/2)

CONVERGENCE OUT PWB

FRONT CONTROL PWB

LED

FRONT TOP

POWER SW

IC805

IC804

DIGITAL CONVERGENCE

MODULE PWB

CH -

CH +

VOL - VOL +

INPUT 3

REMOCON SENSOR PWB

MI-COM & DIST PWB

R/G/B CRT SOCKET PWB

FRONT RELAY PWB

FRONT

MAIN PWB

POWER&DEF

PWB

CN001

RECEIVER

PWB

FRONT

CONVERGENCE

OUT PWB

CN002

G VM PWB

MI-COM&DIST

MODULE PWB

LINE FILTER

PWB

CN003

CN00Y

CN010

SUB TUNER

(TU101)

G CRT

SOCKET

PWB

MAIN TUNER

CN00E

POWER CORD

SPEAKER

DEF OSC PWB

DIGITAL INPUT

MODULE PWB

DIGITAL INPUT

MODULE PWB

AUDIO / VIDEO COMPONENT

AUDIO

S-VIDEO

VIDEO-V

1-22 (No.52105)

AV-48WP74

AV-56WP74

3.5 ADJUSTMENT LOCATION (2/2)

DIGITAL INPUT MODULE PWB CRT SOCKET PWB

M-I COM & DISC MODULE PWB

TOP

RGK

GBK

TP-E

TP-R

TP-G

TP-B

REAR

RBN

RGN

R CRT SOCKET

PWB

G CRT SOCKET B CRT SOCKET

PWB

CONNECTOR

FOCUS PACK

G VM PWB

MAIN PWB

TOP

SCREEN

FOCUS

LINE FILTER PWB

POWER & DEF PWB

FRONT

MAIN PWB

CN001

CN002

DEF OSC PWB

CN003

CN010

FOCUS PACK

RHV

GHV

BHV

FBT

5Pin : TP-91(B1)

4Pin : NC

HV DIVIDER

3Pin : X-ray1

2Pin : X-ray2

1Pin : TP-E (

)

(No.52105)1-23

AV-48WP74

AV-56WP74

3.6 BASIC OPERATION OF SERVICE MENU

SERVICE MENU

DO NOT ADJUST

4.MEMORY SETUP

SERVICE MENU

1.PICTURE/SOUND 7.CONVER B

ADDRESS(H) 0000

2.YC SEP 8.PP

AA 55 00 00 FF 00 00 00

3.WHITE BALANCE 9.IP

4.MEMORY SETUP 0.GCR

5.RF AFC

AA 55 00 00 FF 00 00 00

6.CONVER A

DO NOT ADJUST

1.PICTURE/SOUND

5.RF AFC

NTSC CINE ST L FL MUTE

Function

(Right / Left) key

Function

(Up / Down) key

TUNER

AFC

FINE

A01

001

A01~A27

6.CONVER A

A01

CPA01~08

CCA01~09

CBA01~80

S01~S99

CPA01 OSDH

S01

D01~D32

7.CONVER B

D01

F01~F70

F01

DO NOT ADJUST

2.YC SEP

8.PP

NTSC CINE ST L FL MUTE

ADM001~034

PPA001~008

PPB001~036

PPC001~008

PPD001~025

YCM001~185

YCS001~114

YC01

PPA001

DO NOT ADJUST

3. WHITE BALANCE

9.IP

NTSC CINE ST L FL MUTE

IPA001~120

IPB001~079

IPC001~044

IPD001~026

IPE001~015

DRV R069 B054

CUT R078 G079 B079

IPA001

1-24 (No.52105)

AV-48WP74

AV-56WP74

3.6.1 TOOL OF SERVICE MENU OPERATION

Operate the SERVICE MENU with the REMOTE CONTROL UNIT.

3.6.2 SERVICE MENU ITEMS

In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU.

1.PICTURE / SOUND....This sets the setting values of the VIDEO,AUDIO and DEFLECTION circuits.

2.YC SEP.......................This is used when the YC separation circuit is adjusted. [Do not adjust]

3.WHITE BALANCE ......This sets the setting values of the WHITE BALANCE.

4.MEMORY SETUP.......This sets the setting values of the MEMORY ADDRESS. [Do not adjust]

5.RF AFC.......................This is used when the IF VCO is adjusted. [Do not adjust]

6.CONVER A.................This is used when the CONVERGENCE is adjusted.

7.CONVER B.................This is used when the CONVERGENCE is adjusted.

8.PP...............................This sets the setting value of the output of MULTI-PICTURE circuit.

9.IP ................................This sets the setting value of the DIST circuit. [Do not adjust]

0.GCR............................This model do not built-in.

3.6.3 BASIC OPERATIONS OF THE SERVICE MENU

(1) How to enter the SERVICE MENU.

Press [SLEEP TIMER] key and, while the indication of "SLEEP TIMER 0 MIN." is being displayed, press [DISPLAY] key and

[VIDEO STATUS] key on the remote control unit simultaneously to enter the SERVICE MENU screen as shown in the fig.1.

(2) Releasing SERVICE MENU

After returning to the SERVICE MENU upon completion of the setting work, press the BACK key again.

3.6.4 DESCRIPTION OF STATUS DISPLAY

The status display on the upper part of the SERVICE MENU

STATUS DISPLAY

screen is common (to all models).

NTSC CINE ST L FL MUTE

COLOR

SYSTEM

MEMORY

MODE

(1) COLOR SYSTEM

ASPECT/

MULTI

IP CHANGIN

MODE

NTSC : 480i (COMPOSITE/S input)

DVD

: 480i (COMPONENT)

VIDEO

STATUS

WHITE

BALANCE

: 480p

: 1080i

: 720p

A01 IN LEVEL 001

[SERVICE SCREEN]

720

HED1 : HDCP 480p SIZE1

HED2 : HDCP 480p SIZE2

(4) WHITE BALANCE

: HIGH

: LOW

HHD

: HDCP 1080i

: HDCP 720p

H750

(5) IP CHANGING MODE

(2) ASPECT / MULTI

: FRAME

: LINE

ONE SCREEN

FULL

PANO : PANORAMA

CINE : CINEMA

: FULL

: COMPULSORY NATURAL CINEMA IN

(6) MEMORY MODE

REGU : REGULAR

MUTE : Press [MUTING] key

DIR

: Change data then memory at the same time.

MULTI SCREEN

: One screen (for adjustment)

M2-1

M2-2

: SPLIT (4 : 3)

: SPLIT (16 : 9)

: POP

M12

: INDEX

(3) VIDEO STATUS

: STANDARD

: DYNAMIC

: THEATER

: GAME

(No.52105)1-25

AV-48WP74

AV-56WP74

3.6.5 SERVICE MENU SETTING

1. PICTURE/SOUND

AUDIO, VIDEO, DEFLECTION data adjustment.

1.SETTING ITEM No.

3. WHITE BALANCE

Adjustment of LOW LIGHT / HIGH LIGHT

1.SELECT ITEM

• Press [CH+] / [CH-] key

2.SETTING VALUE

BRIGHT

• Press [VOL+] / [VOL-] key

DRIVE

A : AUDIO

S : SIGNAL

D : DEFLECTION

F : FACTORY SETTING

[4] key : DRIVE R is up

[7] key : DRIVE R is down

[6] key : DRIVE B is up

[9] key : DRIVE B is down

CUTOFF

• Press [CH+] / [CH-] key

A01

S01

D01

F01

Item No. is up/down

[4] key : CUTOFF R is up

[7] key : CUTOFF R is down

[5] key : CUTOFF G is up

[8] key : CUTOFF G is down

[6] key : CUTOFF B is up

[9] key : CUTOFF B is down

• Press [SLEEP TIMER] key

A01 S01

D01

F01

Skip change

3. WHITE BALANCE

2.SETTING ITEM NAME

Describe setting item name

3.SETTING VALUE

R.DRIVE VALUE

B.DRIVE VALUE

Set the setting value.

• Press [VOL+] / [VOL-] key

Set the setting value.

• Press [MUTING] key

Memorize the data.

DRV R069 B054

CUT R078 G079 B079

B.CUT OFF VALUE

G.CUT OFF VALUE

R.CUT OFF VALUE

1.PICTURE/SOUND

NTSC CINE ST L FL MUTE

4. MEMORY SETUP

[Do not adjust]

4.MEMORY SETUP

A01 IN LEVEL 001

ADDRESS(H) 0000

SETTING

VALUE

SETTING ITEM No.

AA 55 00 00 FF 00 00 00

A01~A27 / S01~S99

D01~D32 / F01~F70

SETTING

ITEM NAME

AA 55 00 00 FF 00 00 00

2. YC SEP

YC separation circuit setting

[Do not adjust]

2.YC SEP

NTSC CINE ST L FL MUTE

SETTING

ITEM No.

SETTING

VALUE

YC001

1-26 (No.52105)

AV-48WP74

AV-56WP74

5. RF AFC

[Do not adjust]

8. PP

MULTI-PICTURE circuit data setting

• Do not adjust (except ADM012~ADM014 : Refer to VIDEO

ADJUSTMENT page)

5.RF AFC

8.PP

SETTING ITEM No.

PPA001~PPA008

PPB001~PPB036

PPC001~PPC008

PPD001~PPD025

ADM001~ADM034

TUNER

AFC

FINE

SETTING VALUE

(NOTE)

PPA001

TUNER 1(MAIN) / 2(SUB)

AFC Select ON / OFF

FINE FineTuning(-77~+77)

AFC ON:Auto Setting

9. IP

DIST circuit data setting

[Do not adjust]

6. CONVER A

9.IP

Setting the CONVERGENCE PHASE adjustment

• Setting for 6.CONVER A is described in the CONVER-

GENCE adjustment page.

SETTING ITEM No.

NTSC PIP

IPA001~IPA120

IPB001~IPB079

IPC001~IPC044

IPD001~IPD026

IPE001~IPE015

6.CONVER A

SETTING ITEM No.

CPA01~08

CCA01~09

CBA01~80

SETTING VALUE

OFF FRAM

IPA001

SETTING ITEM NAME

SETTING VALUE

CPA01 OSDH

7. CONVER B

Setting the CONVERGENCE POINT (fine)

• Setting for 7.CONVER B is described in the CONVER-

GENCE adjustment page.

7.CONVER B

(No.52105)1-27

AV-48WP74

AV-56WP74

3.7 INITIAL SETTING VALUE OF SERVICE MENU

(1) Adjustment of the SERVICE MENU is made on the basis of the initial setting values; however, the new setting values which set

the screen in its optimum condition may differ from the initial setting.

(2) Do not change the initial setting values of the setting items NOT LISTED IN ADJUSTMENT.

(3) The (*1 or *2) marked items in following table, it is NO REQUIREMENT for adjustment. If values had change by the missing, set

the initial values in the following table.

(4) "---" is not adjusted. Setting value is not displayed

CAUTION:

Never change the initial setting value any adjustments except for those that are designated in the adjustment procedures.

In case where you have made undesignated adjustments by mistake, never press the [MUTING] key on the remote control unit.

Whenever you had not pressed the [MUTING] key, you would be able to recover the initial value by switching the [POWER] key.

3.7.1 [1. PICTURE / SOUND]

AUDIO SYSTEM

Initial setting value

Item

No.

Item name Variable range

AV-48WP74

AV-56WP74

009

A01 IN LEVEL

000~015

000~063

-128~+127

000~015

-128~+127

000 / 001

009

035

020

+010

000

-017

-011

000

A02 LOW SEP

035

A03 HI SEP

020

A04 BBE BASS

+004

000

A05 BBE TRE

A06 SURROUND

A07 BASS OFS

-007

-005

000

A08 TRE OFS

A09 AHS MVE

A10 AHS MSC

000

A11 (Not display)

A12 (Not display)

A13 (Not display)

A14 (Not display)

A15 (Not display)

A16 (Not display)

A17 (Not display)

A18 (Not display)

A19 (Not display)

A20 (Not display)

A21 (Not display)

A22 (Not display)

A23 (Not display)

A24 (Not display)

A25 (Not display)

A26 (Not display)

A27 (Not display)

000

1-28 (No.52105)

AV-48WP74

AV-56WP74

DEFLECTION SYSTEM

Item

Initial setting value

Item name Variable range

SINGLE PICTURE

No.

SPRIT / POP / MULTI

(FULL)

053

013

045

040

024

028

008

005

003

006

000

091

182

000

D01 V. SIZE

000~127

000~063

000~127

000~063

000~031

000~127

000~031

000~007

000~031

000~255

000 / 001

000~015

000 / 001

000~031

000~015

000~127

000~003

000 / 001

053

013

045

040

024

028

008

005

003

006

000

091

182

000

D02 EW

D03 H. SIZE

D04 V. SCORE

D05 V. LINE

D06 V. CENT

D07 EW.TRAP

D08 BOT.CORN

D09 TOP.CORN

D10 V. EHT

D11 H. EHT

D12 (Not display)

D13 (Not display)

D14 H. CENTER

D15 H. FREQ

D16 (Not display)

D17 (Not display)

D18 (Not display)

D19 (Not display)

D20 (Not display)

D21 (Not display)

D22 (Not display)

D23 (Not display)

D24 (Not display)

D25 (Not display)

D26 (Not display)

D27 (Not display)

D28 (Not display)

D29 (Not display)

D30 (Not display)

D31 (Not display)

D32 (Not display)

(No.52105)1-29

AV-48WP74

AV-56WP74

VIDEO SYSTEM

( NTSC / 480i / 480p )

NTSC

STANDARD

480i

STANDARD

480p

STANDARD

Item

No.

Item name Variable range

THEATER

087

THEATER

072

THEATER

068

S01 COLOR

S02 TINT

000~255

095

062

081

066

074

063

050

062

063

( 720p / 1080i / HDCP )

720p / 1080i

HDCP

Item

No.

Item name Variable range

480p

1080i / 720p

STANDARD

THEATER

STANDARD

THEATER

STANDARD

THEATER

S01 COLOR

S02 TINT

000~255

066

064

058

---

( NTSC / 480i )

Item

NTSC

480i

Item name Variable range

No.

STANDARD

THEATER

STANDARD

THEATER

S03 BRIGHT

000~255

000~127

133

052

121

045

130

065

129

046

S04 CONTRAST

( 480p / 720p / 1080i / HDCP)

480p / 720p / 1080i

HDCP

Item

No.

Item name Variable range

STANDARD

THEATER

130

STANDARD

THEATER

S03 BRIGHT

000~255

000~127

130

065

---

S04 CONTRAST

044

( NTSC / 480i )

Item

NTSC

480i

Item name Variable range

No.

STANDARD

000

THEATER

000

STANDARD

000

THEATER

000

S05 0 MTX SW

S06 INPUT SW

S07 B-Y

000~003

000~063

000~015

000~003

001

013

024

013

024

S08 R-Y

007

000

007

000

S09 G-Y MATRI

001

003

001

003

( 480p / 720p / 1080i / HDCP )

480p / HDCP480p

1080i / 720p / HDCP1080i / HDCP720p

Item

No.

Item name Variable range

STANDARD

THEATER

000

STANDARD

000

THEATER

000

S05 0 MTX SW

S06 INPUT SW

S07 B-Y

000~003

000~063

000~015

000~003

000

001

016

007

001

000

016

022

027

S08 R-Y

002

004

003

S09 G-Y MATRI

003

002

1-30 (No.52105)

AV-48WP74

AV-56WP74

( NTSC / 480i )

Item

NTSC

480i

Item name Variable range

STANDARD

HIGH LOW

THEATER

STANDARD

HIGH LOW

THEATER

No.

HIGH

LOW

---

HIGH

---

LOW

---

S10 DRIVE R

000~255

-128~+127

000~255

073

---

004

---

010

---

005

---

074

---

S11 (Not display)

S12 DRIVE B

006

---

002

---

005

---

060

---

058

---

S13 (Not display)

-128~+127

004

-018

-007

005

-010

-018

( 480p / 720p / 1080i )

480p

720p / 1080i

STANDARD THEATER

Item

No.

Item name Variable range

STANDARD

THEATER

HIGH

---

LOW

---

HIGH

---

LOW

---

HIGH

---

LOW

HIGH

LOW

---

S10 DRIVE R

000~255

-128~+127

000~255

074

---

005

---

S11 (Not display)

S12 DRIVE B

003

---

004

---

003

---

001

---

005

---

008

---

058

---

S13 (Not display)

-128~+127

007

004

000

-010

005

001

-009

( HDCP )

HDCP

Item

No.

Item name Variable range

STANDARD

THEATER

HIGH

---

LOW

---

HIGH

LOW

---

S10 DRIVE R

000~255

-128~+127

000~255

---

005

---

S11 (Not display)

S12 DRIVE B

005

---

008

---

S13 (Not display)

-128~+127

005

001

-009

( NTSC / 480i )

Item

NTSC

480i

Item name Variable range

No.

STANDARD

THEATER

STANDARD

THEATER

S14 CUTOF R

000~255

-128~+127

000~255

-128~+127

000~255

-128~+127

000~003

158

---

-004

---

164

---

001

---

S15 (Not display)

S16 CUTOF G

119

---

119

---

S17 (Not display)

S18 CUTOF B

000

---

185

---

190

---

S19 (Not display)

S20 CUTOF SW R

S21 CUTOF SW G

S22 CUTOF SW B

-004

---

000

---

001

---

(No.52105)1-31

AV-48WP74

AV-56WP74

( 480p / 720p / 1080i )

480p / 720p / 1080i

HDCP

Item

No.

Item name Variable range

STANDARD

THEATER

STANDARD

THEATER

S14 CUTOF R

000~255

-128~+127

000~255

-128~+127

000~255

-128~+127

000~003

165

---

-008

---

000

---

-006

---

S15 (Not display)

S16 CUTOF G

119

---

S17 (Not display)

S18 CUTOF B

000

---

000

---

000

---

190

---

S19 (Not display)

S20 CUTOF SW R

S21 CUTOF SW G

S22 CUTOF SW B

-008

---

000

---

-011

---

001

---

( NTSC / 480i / OTHERS )

Item

NTSC

480i

STANDARD

000

OTHERS SIGNAL

STANDARD THEATER

000 255

Item name Variable range

No.

STANDARD

THEATER

S23 DC CTL

000~255

000

255

( NTSC / 480i / OTHERS SIGNAL)

Item

Item name Variable range

No.

NTSC

480i

OTHERS SIGNAL

S24 RGBLIMT

S25 BL STRT

S26 BL GAIN

000~015

000

015

008

000

015

002

005

000

015

008

000

015

000

002

000

015

008

000

015

000

003

S27 YGM LVL

S28 YGM GAIN

S29 YWD START

S30 YWD GAIN

( NTSC / 480i / 480p )

Item

NTSC

480i

480p

Item name Variable range

No.

STANDARD

THEATER

STANDARD

THEATER

STANDARD

THEATER

S31 COL OFST

S32 TNT OFST

000~255

---

(720p / 1080i / HDCP)

HDCP

720p / 1080i

Item

No.

Item name Variable range

480p

1080i / 720p

STANDARD

THEATER

STANDARD

010

THEATER

007

STANDARD

007

THEATER

000

S31 COL OFST

S32 TNT OFST

000~255

---

003

006

004

000

( NTSC / 480i / 480p / 720p / 1080i )

NTSC

480i / 480p

720p / 1080i

Item

Item name Variable range

No.

STANDARD

THEATER

STANDARD

THEATER

STANDARD

THEATER

S33 BRT OFST

S34 CNT OFST

-128~+127

---

1-32 (No.52105)

AV-48WP74

AV-56WP74

(HDCP / POP / MULTI )

Item

HDCP

Item name Variable range

480p

STANDARD THEATER

1080i / 720p

No.

STANDARD

THEATER

000

S33 BRT OFST

S34 CNT OFST

-128~+127

000

-004

000

-003

-005

(SPRIT)

SPRIT

POP / MULTI

Item

No.

Item name Variable range

STANDARD

000

THEATER

-004

STANDARD

THEATER

S33 BRT OFST

S34 CNT OFST

-128~+127

---

000

Item

No.

Item name Variable range

STANDARD

THEATER

S35 DCTRN SW

S36 BL OFF

000 / 001

000

S37 YGM OFF

S38 ABL OFF

S39 ACL OFF

Item

No.

Item name Variable range Initial setting value

S40 BLCNT LK

S41 YGCNT LK

S42 DCTRN PL

S43 ABL GAIN

S44 ABL STRT

S45 ACL GAIN

S46 ACL STRT

000 / 001

000~015

000

015

000

MULTI SCREEN

ASPECT

VIDEO STATUS

THEATER OTHERS

255 255

Item

No.

Item name Variable range

SPLIT

OTHERS

REGULAR

OTHERS

S47 ACL EERG

000~255

255

( NTSC / 480i / OTHERS )

Item

NTSC

480i

OTHERS SIGNAL

STANDARD THEATER

128 128

Item name Variable range

No.

STANDARD

THEATER

STANDARD

THEATER

S48 CHRM GM

000~255

128

(No.52105)1-33

AV-48WP74

AV-56WP74

(ALL SIGNAL )

Item

No.

Item

No.

Item name Variable range Initial setting value

S75 (Not display)

S76 (Not display)

S77 (Not display)

S78 (Not display)

S79 (Not display)

S80 (Not display)

S81 (Not display)

S82 (Not display)

S83 (Not display)

S84 (Not display)

S85 (Not display)

S86 (Not display)

S87 (Not display)

S88 (Not display)

S89 (Not display)

S90 (Not display)

S91 (Not display)

S92 (Not display)

S93 (Not display)

S94 (Not display)

S95 (Not display)

S96 (Not display)

S97 (Not display)

S98 (Not display)

S99 (Not display)

000 / 001

000

S49 OSDR DC

S50 OSDB DC

S51 BLK OFF

S52 CNT UNDR

S53 CNT UPPR

S54 BRT UNDR

S55 EETH BRT

S56 EETH CNT

S57 BREE CNT

S58 DKEE CNT

S59 DREE BRT

S60 BREE ACL

S61 DKEE ACL

S62 VMOFF DE

S63 VM LOW

000~127

064

000 / 001

-128~+127

000~031

000

-030

+013

-020

000

000~031

000

000~127

000

000~255

000

000~255

000

-128~+127

000 / 001

+005

-020

-010

+010

-002

-001

000

S64 VM MID

S65 VM HIGH

S66 VM L-

S67 VM LH

S68 VM MH

S69 VM M+

+001

000

S70 (Not display)

S71 (Not display)

S72 (Not display)

S73 (Not display)

S74 (Not display)

000

OTHERS

Item

Item name Variable range Initial setting value

No.

F01 (Not display)

F02 (Not display)

F03 (Not display)

F04 (Not display)

F05 CATVMAX

000~255

000 / 001

000~255

069

000

150

001

000

008

F06 (Not display)

F07 (Not display)

F08 (Not display)

1-34 (No.52105)

AV-48WP74

AV-56WP74

Item

No.

Item name Variable range

CINEMA

Except CINEMA

F09 AUTO SCR 1

F10 AUTO SCR 2

F11 AUTO SCR 3

F12 AUTO SCR 4

F13 AUTO SCR 5

F14 AUTO SCR 6

F15 AUTO SCR 7

000~015

001

002

003

004

005

006

007

002

004

005

006

007

Item

No.

Item

No.

Item name Variable range Initial setting value

F29 (Not display)

F30 (Not display)

F31 (Not display)

F32 (Not display)

F33 (Not display)

F34 (Not display)

F35 (Not display)

F36 (Not display)

F37 (Not display)

F38 (Not display)

F39 (Not display)

F40 (Not display)

000 / 001

000

F16 Not use

000~127

000 / 001

000~255

000 / 001

000~255

000 / 001

070

000

005

002

000

141

006

040

000

F17 Not use

F18 FIX DATA

F19 (Not display)

F20 (Not display)

F21 (Not display)

F22 (Not display)

F23 (Not display)

F24 (Not display)

F25 (Not display)

F26 (Not display)

F27 (Not display)

F28 (Not display)

( NTSC / 480i / 480p / 1080i / 720p)

Item

Item name Variable range

No.

NTSC

480i

480p

1080i

720p

F41 (Not display)

F42 (Not display)

F43 (Not display)

000~003

000 / 001

000~063

000

039

000

015

000

025

000

025

000

025

Item

No.

Item

No.

Item name Variable range Initial setting value

F58 (Not display)

F59 (Not display)

F60 ATT GAIN

000~255

000 / 001

-128~+127

000~007

000~003

000~255

000 / 001

047

001

000

001

000

+020

000

-010

004

003

126

000

F44 (Not display)

F45 (Not display)

F46 OUT LX

000 / 001

000~007

000~255

000 / 001

000~007

000~063

-128~+127

000~255

000

---

F61 (Not display)

F62 (Not display)

F63 (Not display)

F64 (Not display)

F65 (Not display)

F66 (Not display)

F67 (Not display)

F68 (Not display)

F69 (Not display)

F70 (Not display)

F47 LMT BTM

---

F48 LMT TOP

---

F49 (Not display)

F50 (Not display)

F51 (Not display)

F52 (Not display)

F53 (Not display)

F54 (Not display)

F55 (Not display)

F56 (Not display)

F57 (Not display)

---

001

003

053

000

015

040

207

128

(No.52105)1-35

AV-48WP74

AV-56WP74

3.7.2 [2.YC SEP] (All fixed)

NOTE :

Initial setting value is reference value at following condition.

Variable

range

Initial setting

value

Item No.

Item name

YCM039

YCM040

YCM041

YCM042

YCM043

YCM044

YCM045

YCM046

YCM047

YCM048

YCM049

YCM050

YCM051

YCM052

YCM053

YCM054

YCM055

YCM056

YCM057

YCM058

YCM059

YCM060

YCM061

YCM062

YCM063

YCM064

YCM065

YCM066

YCM067

YCM068

YCM069

YCM070

YCM071

YCM072

YCM073

YCM074

YCM075

YCM076

YCM077

YCM078

YCM079

YCM080

YCM081

YCM082

YCM083

(Not display)

000~127

000~003

000~063

000 / 001

000~255

000 / 001

000~255

000 / 001

000~003

000 / 001

000~015

000~003

000~063

000~127

000 / 001

000~063

000 / 001

000~063

000~255

000 / 001

068

002

016

000

182

000

127

001

000

001

003

000

001

000

001

004

000

060

040

025

012

036

031

001

024

000

001

010

001

000

001

INPUT SIGNAL

: NTSC

ASPECT

: FULL

MULTI

VIDEO STATUS

: SINGLE

: STANDARD

COLOR TEMPERATURE : LOW

Variable

range

Initial setting

value

Item No.

Item name

YCM001

YCM002

YCM003

YCM004

YCM005

YCM006

YCM007

YCM008

YCM009

YCM010

YCM011

YCM012

YCM013

YCM014

YCM015

YCM016

YCM017

YCM018

YCM019

YCM020

YCM021

YCM022

YCM023

YCM024

YCM025

YCM026

YCM027

YCM028

YCM029

YCM030

YCM031

YCM032

YCM033

YCM034

YCM035

YCM036

YCM037

YCM038

(Not display)

000 / 001

000~003

000~255

000~003

000~255

000 / 001

000~003

000 / 001

000~003

000 / 001

000~003

000 / 001

000~003

000 / 001

000~003

000~007

000 / 001

000~015

000~003

000~007

000~003

000 / 001

000~003

000 / 001

000~255

000 / 001

000~003

000~127

000

001

239

001

239

000

001

000

002

004

001

000

005

003

000

003

002

003

000

003

001

000

096

001

062

1-36 (No.52105)

AV-48WP74

AV-56WP74

Variable

range

Initial setting

value

Variable

range

Initial setting

Item No.

Item name

Item No.

Item name

value

001

050

131

055

001

136

000

001

003

141

000

014

000

005

128

000

001

000

001

000

136

001

000

015

004

001

004

001

000

003

002

016

235

000

003

000

096

003

YCM084

YCM085

YCM086

YCM087

YCM088

YCM089

YCM090

YCM091

YCM092

YCM093

YCM094

YCM095

YCM096

YCM097

YCM098

YCM099

YCM100

YCM101

YCM102

YCM103

YCM104

YCM105

YCM106

YCM107

YCM108

YCM109

YCM110

YCM111

YCM112

YCM113

YCM114

YCM115

YCM116

YCM117

YCM118

YCM119

YCM120

YCM121

YCM122

YCM123

YCM124

YCM125

YCM126

YCM127

YCM128

(Not display)

000~063

000 / 001

000~063

000 / 001

000~031

000~003

000~015

000~063

000~255

000 / 001

000~063

000~015

000~255

000 / 001

000~003

000 / 001

000~255

000 / 001

000~255

000 / 001

012

000

028

001

000

002

000

025

001

063

008

005

008

005

000

002

008

006

010

032

031

064

000

001

000

001

000

001

000

003

000

002

000

001

YCM129

YCM130

YCM131

YCM132

YCM133

YCM134

YCM135

YCM136

YCM137

YCM138

YCM139

YCM140

YCM141

YCM142

YCM143

YCM144

YCM145

YCM146

YCM147

YCM148

YCM149

YCM150

YCM151

YCM152

YCM153

YCM154

YCM155

YCM156

YCM157

YCM158

YCM159

YCM160

YCM161

YCM162

YCM163

YCM164

YCM165

YCM166

YCM167

YCM168

YCM169

YCM170

YCM171

YCM172

YCM173

(Not display)

000 / 001

000~003

000~255

000~007

000~255

000 / 001

000~007

000~255

000~007

000~255

000 / 001

000~007

000~255

000 / 001

000~255

000 / 001

000~003

000~015

000 / 001

000~127

000 / 001

000~031

000 / 001

000~015

000~007

000~031

000~255

000~003

000~063

000~015

000~007

000~255

000~007

(No.52105)1-37

AV-48WP74

AV-56WP74

Variable

range

Initial setting

value

Variable

range

Initial setting

value

Item No.

Item name

Item No.

Item name

YCM174

YCM175

YCM176

YCM177

YCM178

YCM179

YCM180

YCM181

YCM182

YCM183

YCM184

YCM185

YCS001

YCS002

YCS003

YCS004

YCS005

YCS006

YCS007

YCS008

YCS009

YCS010

YCS011

YCS012

YCS013

YCS014

YCS015

YCS016

YCS017

YCS018

YCS019

YCS020

YCS021

YCS022

YCS023

YCS024

YCS025

YCS026

YCS027

YCS028

YCS029

YCS030

YCS031

YCS032

YCS033

(Not display)

000~255

000 / 001

000~255

000 / 001

000~007

000~003

000~255

000 / 001

000~003

000~255

000~003

000~255

000 / 001

000~003

000 / 001

000~003

000 / 001

000~003

000 / 001

000~003

000~001

000~003

000~007

000 / 001

000~015

000~003

000~007

000~003

000 / 001

000~003

000 / 001

056

000

022

001

000

004

001

000

001

239

001

239

000

001

000

002

004

001

000

005

003

000

003

006

003

000

003

001

YCS034

YCS035

YCS036

YCS037

YCS038

YCS039

YCS040

YCS041

YCS042

YCS043

YCS044

YCS045

YCS046

YCS047

YCS048

YCS049

YCS050

YCS051

YCS052

YCS053

YCS054

YCS055

YCS056

YCS057

YCS058

YCS059

YCS060

YCS061

YCS062

YCS063

YCS064

YCS065

YCS066

YCS067

YCS068

YCS069

YCS070

YCS071

YCS072

YCS073

YCS074

YCS075

YCS076

YCS077

YCS078

(Not display)

000 / 001

000~255

000 / 001

000~003

000~127

000~003

000~063

000 / 001

000~255

000 / 001

000~255

000 / 001

000~031

000~003

000~015

000~063

000~255

000 / 001

000~063

000~015

000~255

000 / 001

000

096

001

062

068

001

016

000

144

000

100

001

000

008

001

030

001

016

008

005

008

005

000

002

008

006

010

032

031

064

000

001

000

001

000

001

000

1-38 (No.52105)

AV-48WP74

AV-56WP74

3.7.3 [3.WHITE BALANCE]

NOTE :

Variable

range

Initial setting

value

Item No.

Item name

Initial setting value is reference value at following condition.

YCS079

YCS080

YCS081

YCS082

YCS083

YCS084

YCS085

YCS086

YCS087

YCS088

YCS089

YCS090

YCS091

YCS092

YCS093

YCS094

YCS095

YCS096

YCS097

YCS098

YCS099

YCS100

YCS101

YCS102

YCS103

YCS104

YCS105

YCS106

YCS107

YCS108

YCS109

YCS110

YCS111

YCS112

YCS113

YCS114

(Not display)

000 / 001

000~003

000 / 001

000~255

000~007

000~255

000 / 001

000~255

000 / 001

000~003

000~015

000 / 001

000~127

000~031

000 / 001

000~015

000~007

000~031

000~255

000~003

000~063

000~015

000 / 001

000~003

000~255

000

003

000

014

000

001

000

136

001

000

015

004

001

007

000

003

002

016

235

000

003

000

001

000

INPUT SYGNAL

ASPECT

: NTSC

: FULL

MULTI

VIDEO STATUS

: SINGLE

: STANDARD

COLOR TEMPRETURE : LOW

Variable

range

Initial setting

value

Item No.

Item name

(Not display)

000~238

000~255

133

072

060

188

149

215

DRV R

DRV B

DRV R

DRV G

DRV B

3.7.4 [6.CONVER A]

Variable

range

Initial setting

value

Item No.

Item name

CPA01

CPA02

CPA03

CPA04

CPA05

CPA06

CPA07

CPA08

CCA01

CCA02

CCA03

CCA04

CCA05

CCA06

CCA07

CCA08

CCA09

OSD H

0~4095

0~1023

147

1660

3920

OSD V

FINE H

0~4095

FINE V

0~4095

CAU V

0~4095

CAU H1

CAU H2

FINE OFF

C H CENT

C H SIZE

C H LINE

C H SKEW

C EW PIN

C H BOW

C V CENT

C V SKEW

C V SIZE

0~65535

0~255

0 / 1

-512~+511

-12

-29

-95

Variable

range

Initial setting

value

Item No.

Item name

CBA01

CBA02

CBA03

CBA04

CBA05

CBA06

CBA07

CBA08

CBA09

CBA10

LINE COMP

INTER NUM

INTERLACE

ADD RATIO

DAC NUM

0~3

0~15

0 / 1

0~3

0 / 1

0~7

CKOUT FRF

ODD LAVEL

V1CNTUP

0 / 1

0~4095

0 / 1

310

RETRACE

RV CLAMP

(No.52105)1-39

AV-48WP74

AV-56WP74

Variable

range

Initial setting

value

Variable

range

Initial setting

value

Item No.

Item name

Item No.

Item name

CBA11

CBA12

CBA13

CBA14

CBA15

CBA16

CBA17

CBA18

CBA19

CBA20

CBA21

CBA22

CBA23

CBA24

CBA25

CBA26

CBA27

CBA28

CBA29

CBA30

CBA31

CBA32

CBA33

CBA34

CBA35

CBA36

CBA37

CBA38

CBA39

CBA40

CBA41

CBA42

CBA43

CBA44

CBA45

CBA46

CBA47

CBA48

CBA49

CBA50

CBA51

CBA52

CBA53

CBA54

CBA55

GV CLAMP

BV CLAMP

RH CLAMP

GH CLAMP

BH CLAMP

PATTERN H 1

PATTERN W 1

CURSPACE

ODEV POSI

HBLKOUT

HBLKOP

0 / 1

CBA56

CBA57

CBA58

CBA59

CBA60

CBA61

CBA62

CBA63

CBA64

CBA65

CBA66

CBA67

CBA68

CBA69

CBA70

CBA71

CBA72

CBA73

CBA74

CBA75

CBA76

CBA77

CBA78

CBA79

CBA80

AF5POSV

AF5HSIZE

AF5VSIZE

AF6POSH

AF6POSV

AF6VSIZE

AF6HSIZE

AF7POSV

AF7POSH

AF7VSIZE

AF7HSIZE

AF8POSV

AF8POSH

AF8VSIZE

AF8HSIZE

BL1POSV

BL1POSH

BL2POSV

BL2POSH

XLPOSV

0~4095

0~255

1016

0 / 1

0~511

505

1056

0 / 1

0~2490

0~4095

0~255

0 / 1

0~3

0~511

0~3

0~2490

0~4095

0~255

0~4095

0 / 1

0~4095

0~1023

0~7

2091

373

0~511

HBLKOW

0~2490

0~4095

0~255

PWM1P

PWM1W

256

PWM2P

0~511

PWM2W

0~2490

0~4095

0~255

VBLK01P

VBLK01W

VBLK02P

0~511

VBLK02W

VBLK03P

0~2490

0~4095

0~255

545

1056

185

421

XLPOSH

VBLK03W

VBLK04P

XLLENV

XLLENH

0~511

VBLK04W

HATCH COL

BORDE COL

CROSS COL

BLOCK COL

AF1 POSV

AF1POSH

AF1VSIZE

AF1HSIZE

AF2POSV

AF2POSH

AF2VSIZE

AF2HSIZE

AF3POSV

AF3POSH

AF3VSIZE

AF3HSIZE

AF4POSV

AF4POSH

AF4VSIZE

AF4HSIZE

AF5POSH

FINE LIMT

DC LIMT

0~2490

0~4095

0~7

3.7.5 [8.PP]

NOTE :

0~7

Initial setting value is reference value at following condition.

0~2490

0~4095

0~255

0~511

0~2490

0~4095

0~255

0~511

0~2490

0~4095

0~255

0~511

0~2490

0~4095

0~255

0~511

0~2490

INPUT SIGNAL

ASPECT

MULTI

VIDEO STATUS

COLOR TEMPERATURE : LOW

: NTSC

: FULL

: SINGLE

: STANDARD

200

100

548

200

100

200

946

1061

200

100

546

1730

100

200

548

Variable

range

Initial setting

value

Item No.

Item name

ADM001

ADM002

ADM003

ADM004

ADM005

ADM006

ADM007

ADM008

(Not display)

000~0FF

000~00F

000~003

000~007

000~01F

000~0FF

0D6

007

001

005

016

036

08A

020

1-40 (No.52105)

AV-48WP74

AV-56WP74

Variable

range

Initial setting

Variable

range

Initial setting

value

Item No.

Item name

Item No.

Item name

value

01B

0D0

000

PPB008

PPB009

PPB010

PPB011

(Not display)

000~255

000~031

000~255

ADM009

ADM010

ADM011

ADM012

ADM013

ADM014

ADM015

ADM016

ADM017

ADM018

ADM019

ADM020

ADM021

ADM022

ADM023

ADM024

ADM025

ADM026

ADM027

ADM028

ADM029

ADM030

ADM031

ADM032

ADM033

ADM034

(Not display)

000~0FF

000~07F

000 / 001

000~01F

000 / 001

000~0FF

0FF

03A

02C

03C

001

000

001

000

001

000

001

000

001

003

001

000

001

032

000

Variable

range

Initial setting

value

Item No.

Item name

PPB012

PPB013

PPB014

PPB015

PPB016

PPB017

PPB018

PPB019

PPB020

PPB021

PPB022

PPB023

PPB024

PPB025

PPB026

PPB027

PPB028

PPB029

PPB030

PPB031

PPB032

PPB033

PPB034

PPB035

PPB036

(Not display)

000~255

000~031

000~255

000~031

000~255

000~031

000~255

000~031

000~255

000~031

000~255

000~031

000~255

000~031

000~255

000~031

000~255

000

Variable

range

Initial setting

value

Item No.

Item name

PPA001

PPA002

PPA003

PPA004

PPA005

PPA006

PPA007

PPA008

(Not display)

000~255

000

047

000

001

047

023

Variable

range

Initial setting

value

Item No.

Item name

PPC001

PPC002

PPC003

PPC004

PPC005

PPC006

PPC007

PPC008

(Not display)

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~03F

000

00C

002

000

Variable

range

Initial setting

value

Item No.

Item name

PPB001

PPB002

PPB003

PPB004

PPB005

PPB006

PPB007

(Not display)

000~031

000~255

000~031

000~255

000~031

000

00D

0F8

000

(No.52105)1-41

AV-48WP74

AV-56WP74

Variable

range

Initial setting

value

Variable

range

Initial setting

value

Item No.

Item name

Item No.

Item name

IPA012

IPA013

IPA014

IPA015

IPA016

IPA017

IPA018

IPA019

IPA020

IPA021

IPA022

IPA023

IPA024

IPA025

IPA026

IPA027

IPA028

IPA029

IPA030

IPA031

IPA032

IPA033

IPA034

IPA035

IPA036

IPA037

IPA038

IPA039

IPA040

IPA041

IPA042

IPA043

IPA044

IPA045

IPA046

IPA047

IPA048

IPA049

IPA050

IPA051

IPA052

IPA053

IPA054

IPA055

IPA056

(Not display)

000~03F

000~003

000~00F

000~03F

000 / 001

000~03F

000 / 001

000~03F

000~003

000~03F

000 / 001

000~03F

000~003

000~03F

000~00F

000~007

000~03F

000 / 001

000~03F

000 / 001

000~03F

000~003

000~00F

000~03F

000~003

000~00F

000~03F

000 / 001

000~03F

000 / 001

000~03F

000~003

028

002

00F

D1B

001

0FF

001

01F

000

008

001

01F

000

008

01C

000

001

010

001

034

001

00E

02E

01E

002

003

008

020

006

00E

01E

002

003

008

020

001

020

001

020

002

PPD001

PPD002

PPD003

PPD004

PPD005

PPD006

PPD007

PPD008

PPD009

PPD010

PPD011

PPD012

PPD013

PPD014

PPD015

PPD016

PPD017

PPD018

PPD019

PPD020

PPD021

PPD022

PPD023

PPD024

PPD025

(Not display)

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

008

063

0CB

0C0

045

041

035

030

000

024

001

039

000

096

001

086

000

024

001

050

000

0AA

001

072

3.7.6 [9.IP] (All fixed)

NOTE :

Initial setting value is reference value at following condition.

INPUT SIGNAL

ASPECT

MULTI

VIDEO STATUS

COLOR TEMPERATURE : LOW

: NTSC

: FULL

: SINGLE

: STANDARD

Variable

range

Initial setting

value

Item No.

Item name

IPA001

IPA002

IPA003

IPA004

IPA005

IPA006

IPA007

IPA008

IPA009

IPA010

IPA011

(Not display)

000 / 001

000~03F

000~003

000~00F

000~03F

001

030

02E

030

000

008

000

01D

010

018

1-42 (No.52105)

AV-48WP74

AV-56WP74

Variable

range

Initial setting

value

Variable

range

Initial setting

Item No.

Item name

Item No.

Item name

value

000

080

000

040

005

040

000

0C0

002

0ET

000

IPA057

IPA058

IPA059

IPA060

IPA061

IPA062

IPA063

IPA064

IPA065

IPA066

IPA067

IPA068

IPA069

IPA070

IPA071

IPA072

IPA073

IPA074

IPA075

IPA076

IPA077

IPA078

IPA079

IPA080

IPA081

IPA082

IPA083

IPA084

IPA085

IPA086

IPA087

IPA088

IPA089

IPA090

IPA091

IPA092

IPA093

IPA094

IPA095

IPA096

IPA097

IPA098

IPA099

IPA100

IPA101

(Not display)

000~03F

000 / 001

000~03F

000~003

000~03F

000~00F

000~007

000~03F

000 / 001

000~03F

000~003

000~0FF

000~00F

000~0FF

000 / 001

000~0FF

000 / 001

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

020

001

020

002

020

008

002

020

001

020

000

008

098

000

013

000

00F

0FF

000

00F

0FF

000

IPA102

IPA103

IPA104

IPA105

IPA106

IPA107

IPA108

IPA109

IPA110

IPA111

IPA112

IPA113

IPA114

IPA115

IPA116

IPA117

IPA118

IPA119

IPA120

(Not display)

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000 / 001

Variable

range

Initial setting

value

Item No.

Item name

IPB001

IPB002

IPB003

IPB004

IPB005

IPB006

IPB007

IPB008

IPB009

IPB010

IPB011

IPB012

IPB013

IPB014

IPB015

IPB016

IPB017

IPB018

IPB019

IPB020

IPB021

IPB022

IPB023

IPB024

(Not display)

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000

0D4

000

0FC

003

089

003

089

002

02D

001

073

000

069

000

00E

000

016

000

010

000

02D

000

(No.52105)1-43

AV-48WP74

AV-56WP74

Variable

range

Initial setting

value

Variable

range

Initial setting

value

Item No.

Item name

Item No.

Item name

IPB025

IPB026

IPB027

IPB028

IPB029

IPB030

IPB031

IPB032

IPB033

IPB034

IPB035

IPB036

IPB037

IPB038

IPB039

IPB040

IPB041

IPB042

IPB043

IPB044

IPB045

IPB046

IPB047

IPB048

IPB049

IPB050

IPB051

IPB052

IPB053

IPB054

IPB055

IPB056

IPB057

IPB058

IPB059

IPB060

IPB061

IPB062

IPB063

IPB064

IPB065

IPB066

IPB067

IPB068

IPB069

(Not display)

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000 / 001

000~007

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~007

000~003

000 / 001

000~0FF

000 / 001

000~00F

00F

000

005

033

000

04A

00F

000

00F

000

001

000

003

000

002

0DB

000

00F

0FF

00F

0FF

00F

0FF

00F

0FF

000

0CE

00F

000

004

000

002

000

040

080

000

IPB070

IPB071

IPB072

IPB073

IPB074

IPB075

IPB076

IPB077

IPB078

IPB079

(Not display)

000~00F

000~0FF

000~00F

000~0FF

000 / 001

000~00F

000 / 001

000~0FF

00F

000

001

089

Variable

range

Initial setting

value

Item No.

Item name

IPC001

IPC002

IPC003

IPC004

IPC005

IPC006

IPC007

IPC008

IPC009

IPC010

IPC011

IPC012

IPC013

IPC014

IPC015

IPC016

IPC017

IPC018

IPC019

IPC020

IPC021

IPC022

IPC023

IPC024

IPC025

IPC026

IPC027

IPC028

IPC029

IPC030

IPC031

IPC032

IPC033

(Not display)

000~003

000~0FF

000 / 001

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~00F

000~0FF

000~003

000 / 001

000~0FF

000 / 001

000~07F

000 / 001

000~07F

000~00F

000~0FF

000~003

000~0FF

000 / 001

000~07F

000~001

000~07F

000 / 001

002

018

000

008

097

004

064

000

001

000

001

000

068

000

00F

000

020

000

01B

001

000

001

000

1-44 (No.52105)

AV-48WP74

AV-56WP74

Variable

range

Initial setting

value

Variable

range

Initial setting

Item No.

Item name

Item No.

Item name

value

IPC034

IPC035

IPC036

IPC037

IPC038

IPC039

IPC040

IPC041

IPC042

IPC043

IPC044

(Not display)

000 / 001

000

001

000

IPE001

IPE002

IPE003

IPE004

IPE005

IPE006

IPE007

IPE008

IPE009

IPE010

IPE011

IPE012

IPE013

IPE014

IPE015

(Not display)

000~255

001

002

000~255

001

000~255

002

000~255

001

000~255

002

000~255

001

000~255

001

-128~+127

000~015

+015

-004

+008

068

Variable

range

Initial setting

value

Item No.

Item name

IPD001

IPD002

IPD003

IPD004

IPD005

IPD006

IPD007

IPD008

IPD009

IPD010

IPD011

IPD012

IPD013

IPD014

IPD015

IPD016

IPD017

IPD018

IPD019

IPD020

IPD021

IPD022

IPD023

IPD024

IPD025

IPD026

(Not display)

000~0FF

000~007

000~0FF

000~007

000~0FF

000 / 001

000~00F

000~0FF

000~00F

000~0FF

000~007

000 / 001

000~0FF

000~007

000~0FF

000~007

000~0FF

000 / 001

000~00F

000~0FF

000~00F

000~0FF

040

000

014

002

034

001

03C

008

086

001

000

018

002

02F

001

03D

008

042

(No.52105)1-45

AV-48WP74

AV-56WP74

3.8 ADJUSTMENT PROCEDURE

3.8.1 CHECK ITEMS

Measuring

instrument

HIGH VOLTAGE Signal

Item

Test point

Adjustment part

Description

CRT Anode

(1) Receive NTSC whole black signal.

(2) Connect the high voltage meter between CRT anode

and GND.

generator

check

High voltage

meter

(3) Check that the high voltage range DC 31.0kV±1.0kV.

X-RAY

PROTECTOR

check

Resistor

[6.8k ohm

1/4W ±5%] 3 pin : X-Ray1

S1 connector

2 pin : X-Ray2

(1) Receive any broadcast.

(2) Connect resistor 6.8k ohm(1/4W, ±5%) between 2 pin

& 3 pin of the connector S1.

(3) Confirm that the X-RAY protector functions operated.

3.8.2 HORIZONTAL FREQUENCY ADJUSTMENT

Measuring

Item

Test point

Adjustment part

Description

instrument

H. FREQUENCY Signal

[1.PICTURE/SOUND]

D15 : H. FREQ.

D19 : DEF. RST

(1) Receive any broadcast.

adjustment

generator

(2) Press [ASPECT] key and select FULL mode.

(3) Select 1. PICTURE/SOUND from SERVICE MENU.

(4) Select <D19> (DEF. RST) and change the data 0 to 1.

(5) While observing the screen, adjust the <D15> (H.

FREQ) so that an optimum horizontal synchronization

is obtained.

Remote

control unit

(6) After adjustment, select <D19> and change the data

1 to 0.

(7) Press [MUTING] key to memorize the set value.

1-46 (No.52105)

AV-48WP74

AV-56WP74

3.8.3 FOCUS & BEAM SPOT ADJUSTMENT

Measuring

Item

Test point

Adjustment part

Description

instrument

FOCUS &

BEAM SPOT

adjustment

Signal

generator

R Def. Yoke (DY)

G Def. Yoke (DY)

B Def. Yoke (DY)

[PROJECTION UNIT]

(1) Receive NTSC cross-hatch signal.

(2) Press [ASPECT] key and select FULL mode.

(3) If the picture tilted, adjust the R, G and B DY position

to mark straight horizontal line.

Similar

adhesive

(Securing

adhesive)

LENS FOCUS

(1) Makes a red single color.

R LENS FOCUS screw

G LENS FOCUS screw

B LENS FOCUS screw

[PROJECTION UNIT

(LENS ASS'Y)]

NOTE :

When making a single color, It squeezes SCREEN

VR in each one, or it does a lid to the lens in of the

adjustment color and it makes it single color.

(2) By turning the LENS FOCUS screw (in LENS

ASS'Y), for optimum focus at the screen center.

Check for absence of difference in the peripheral

focus. If the peripheral focus is poor, slightly shift the

center focus to obtain overall balanced focus.

(3) In the same manner, produce green and blue single

color and adjust their respective focus.

R SCREEN VR

G SCREEN VR

B SCREEN VR

[FOCUS PACK]

4 pole magnet

2 pole magnet

[PROJECTION UNIT

(R / G / B CRT neck)]

(4) After adjustment, it fixes a screw.

NOTE :

There is not a difference in the focus in the top and the

bottom, on either side, in the diagonal.

When the difference of the focus is big, it removes a

main lens, and it puts a washer between the main

lens and the coupler and it adjusts it.

R FOCUS VR

G FOCUS VR

B FOCUS VR

[FOCUS PACK]

BEAM SPOT

(5) Receive NTSC dot pattern signal.

(6) Makes a red single color.

DEFLECTION

YOKE

LENS FOCUS

SCREW

NOTE :

CENTERING

MAGNET

When making a single color, It squeezes SCREEN

VR in each one, or it does a lid to the lens in of the

adjustment color and it makes it single color.

(7) Turn the R FOCUS VR to set the dot diameter to

about Ø30mm.

(8) Turn the 4 pole magnet of the projection unit CRT

neck and to where the dots at the screen center are

nearly circular.

4 POLE

MAGNET MAGNET

2 POLE

(9) Return the R FOCUS VR to its original position (just

PROJECTION UNIT & LENS ASS'Y

(CRT adjustment location)

focus).

(10) Turn the 2 pole magnet of the CRT neck to minimize

expansion of the dots.

(11) In the same manner, adjust for the green and blue

single color focus.

(12) Secure the 4 and 2 pole magnets with similar

adhesive.

CRT FOCUS

(13) Receive NTSC crosshatch signal.

(14) Makes a red single color.

NOTE :

When making a single color, It squeezes SCREEN

VR in each one, or it does a lid to the lens in of the

adjustment color and it makes it single color.

(15) Adjust the R FOCUS VR for optimum focus at the

position indicated in the figure.

CRT FOCUS adjustment point

(16) In the same manner, adjust for the green and blue

single color focus.

(17) After adjustment, return the SCREEN VRs to their

original positions.

NOTE :

When moving screen VR, always return to original.

(No.52105)1-47

AV-48WP74

AV-56WP74

3.8.4 DEFLECTION & CONVERGENCE ADJUSTMENT

• The adjustment using the remote control unit is made on the basis of the initial setting values.

• The setting values which adjust the screen to the optimum condition can be different from the initial setting values.

• At first the adjustment in FULL mode should be done, then the data for the other ASPECT mode is corrected in the respective value

at the same time.

3.8.4.1 FLOWCHART OF ADJUSTMENT

CAUTION:

All adjustments of the DEFLECTION circuit for this model should be carried out under the status without convergence operation.

To enter the mode without convergence operation, select 1.PICTURE/SOUND and change the data in the setting item F62 from 0

to 1. (For details, please refer to the adjustment of DEFLECTION.)

As a result, you can get the screen as shown in bellow figure. Adjust the DEFLECTION circuit in order of the steps indicated by the

downward arrows.

NOTE: When every adjustment of the DEFLECTION circuit has completed, start the adjustment of convergence.

Adjustment

location

sequence

PREPARATION

Without

convergence

operation

H.SIZE

Overall position & size

Center

SCREEN TILT

SIDE PIN

PASTER

Center perimeter

CENTERING

& H.POSITION /SIZE

(coarse)

(If center deviated, readjust)

TRAPEZIU

CONVERGENCE

DEFLECTION

Perimeter

(If center deviated, readjust)

CONVERGENCE

PHASE

V.POSITION / SIZE /

LINEARITY

Center (Final adjust)

R and B only

OVERALL

CONVERGENCE

H.POSITION

Crosshatch Completed

(From a collection of squares)

1-48 (No.52105)

AV-48WP74

AV-56WP74

3.8.4.2 PREPARATION

Measuring

instrument

Item

Test point

Adjustment part

Description

SCREEN TILT

adjustment

Signal

generator

[1.PICTURE/SOUND] • Confirm correct FOCUS adjustment.

F62 : Without

convergence operation

(1) Receive NTSC cross-hatch signal.

(2) Select 1. PICTURE/SOUND from SERVICE MENU.

(3) Select <F62> (Without convergence operation) with

[CH +] / [CH -] keys.

(4) Change the data 0 to 1, then it makes picture without

convergence operation.

Remote

control unit

G DEF. YOKE

R DEF. YOKE

B DEF. YOKE

[PROJECTION UNIT]

(5) Makes a green single color.

NOTE :

1. PICTER/SOUND menu

When making a single color, It squeezes SCREEN

VR in each one, or it does a lid to the lens in the

adjustment color and it makes it single color.

(6) Temporarily secure the G deflection yoke to the top

of the neck and adjust the tilt of the deflection yoke

so that the horizontal line at the center becomes flat.

After adjustment, fasten the temporal screw.

(7) Adjust the tilt of the R and B deflection yokes in the

same manner as for green.

F62

NOTE :

Make sure that the adjustment of CRT FOCUS is

optimized at the center and at the fringe of the center

in turn. If the proper adjustment has not been done,

adjust FOCUS VR again.

Select item Change value

RASTER

Signal

generator

[1.PICTURE/SOUND]

D03 : H. SIZE

D14 : H. CENTER

F62 : Without

(1) Receive NTSC circle (or cross-hatch) signal.

(2) Select 1. PICTURE/SOUND from SERVICE MENU.

(3) Select <F62> (Without convergence operation) with

[CH +] / [CH -] keys.

(4) Change the data 0 to 1, then it makes picture without

convergence operation.

CENTERING &

H. POSITION /

SIZE (coarse)

adjustment

Remote

control unit

convergence operation

G CENTERING

magnet

(5) Makes a green single color.

R CENTERING

magnet

B CENTERING

magnet

NOTE :

When making a single color, it squeezes SCREEN

VR in each one, or it does a lid to the lens in the

adjustment color and it makes it single color.

(6) Select <D03> (H. SIZE) and shorten the level until

and perpendicular amplitude of vibration with until

the blanking in Left and Right and on either side can

be seen.

[DEF. YOKE]

R G B

(7) Select <D14> (H. CENTER) and adjust horizontal

position to make the screen center and signal

center.

(8) Select <D03> and adjust horizontal size to make

screen picture approx. 92% of H-SIZE.

(9) After adjustment, select <F62> and change the data

1 to 0.

(10) Press [MUTING] key and memorize the set value.

(11) Adjust G CENTERING magnet to make horizontal

and vertical line center as mechanical center of

screen.

L1=30mm

L2=45mm

(12) Red and blue color too, are reflected by it.

(13) Using R CENTERING magnet and B CENTERING

magnet, adjusts for the line of the red(L1) and the

blue(L2) to become the position of the left figure.

NOTE :

Vertical center position of the red and blue are the

same as green.

(No.52105)1-49

AV-48WP74

AV-56WP74

3.8.4.3 DEFLECTION ADJUSTMENT

Measuring

instrument

Item

Test point

Adjustment part

Description

V. POSITION /

SIZE /

LINEARITY

adjustment

Signal

generator

[1.PICTURE/SOUND] • To memorize every time after finish adjustment on each

D01 : V. SIZE

D05 : V. LINE

mode.

(1) Receive NTSC circle pattern signal.

(2) Select FULL mode with [ASPECT] key.

(3) Select 1. PICTURE/SOUND from SERVICE MENU.

(4) Select <F62> (Without convergence operation).

(5) Change the data 0 to 1, then it makes picture without

convergence operation.

Remote

control unit

D06 : V. CENT

F62 : Without

convergence operation

(6) Select <D01> (V. SIZE), <D05> (V. LINE), <D06>

(V. CENT).

(7) Adjust <D01>, <D05> and <D06> to make A = B

(precision ±2mm), and adjust to make C = 55mm

(AV-48WP74) / 75mm (AV-56WP74)

(8) Press [MUTING] key and memorize the set value.

NOTE :

Do not adjust <D04> (V. S-CORRECTION), if it is

different vertical position after adjust vertical linearity,

to adjust vertical position.

H. POSITION

adjustment

Signal

generator

[1.PICTURE/SOUND]

D14 : H. CENTER

F62 : Without

(1) Receive NTSC circle pattern signal.

(2) Select FULL mode with [ASPECT] key.

(3) Select 1. PICTURE/SOUND from SERVICE MENU.

(4) Select <F62> (Without convergence operation).

(5) Change the data 0 to 1, then it makes picture without

convergence operation.

Remote

control unit

convergence operation

(6) Select <D14> (H. CENTER).

(7) Adjust <D14> to make D = E as shown figure.

(8) Press [MUTING] key and memorize the set value.

H. SIZE

adjustment

Signal

generator

[1.PICTURE/SOUND]

D03 : H. SIZE

F62 : Without

(1) Receive NTSC cross-hatch signal.

(2) Select FULL mode with [ASPECT] key.

(3) Select 1. PICTURE/SOUND from SERVICE MENU.

(4) Select <F62> (Without convergence operation).

(5) Change the data 0 to 1, then it makes picture without

convergence operation.

Remote

control unit

convergence operation

(6) Select <D03> (H. SIZE).

(7) Adjust <D03> to make sure that the vertical screen

size of the picture size is 92%.

(8) Press [MUTING] key and memorize the set value.

Screen size

(92%)

Picture size

100%

1-50 (No.52105)

AV-48WP74

AV-56WP74

Measuring

instrument

Item

SIDE PIN

Test point

Adjustment part

Description

Signal

generator

[1.PICTURE/SOUND]

D02 : EW

(1) Receive NTSC cross-hatch signal.

(2) Select FULL mode with [ASPECT] key.

adjustment

D08 : BOT.CORN

D09 : TOP.CORN

F62 : Without

(3) Select 1. PICTURE/SOUND from SERVICE MENU.

(4) Select <F62> (Without convergence operation).

(5) Change the data 0 to 1, then it makes picture without

convergence operation.

Remote

control unit

convergence operation

(6) Select <D02> (EW), <D08> (BOT.CORN), <D09>

(TOP.CORN).

(7) Adjust <D02>, <D08>, <D09> to make the vertical

lines at the left and right edges of the screen straight.

(8) Press [MUTING] key and memorize the set value.

Straight

NOTE :

After making adjustments, confirm that the horizontal

position is properly adjusted. If the horizontal is out of

alignment, readjust it. Adjust H SIZE & SIDE PIN

reparably.

TRAPEZIUM

adjustment

Signal

generator

[1.PICTURE/SOUND]

D07 : EW.TRAP

F62 : Without

(1) Receive NTSC cross-hatch signal.

(2) Select FULL mode with [ASPECT] key.

(3) Select 1. PICTURE/SOUND from SERVICE MENU.

(4) Select <F62> (Without convergence operation).

(5) Change the data 0 to 1, then it makes picture without

convergence operation.

Remote

control unit

convergence operation

(6) Select <D07> (EW.TRAP).

(7) Adjust <D07> to bring the vertical lines at the right

and left edges of the screen parallel.

(8) Press [MUTING] key and memorize the set value.

NOTE :

After making adjustments, confirm that the horizontal

position is properly adjusted. If the horizontal is out of

alignment, readjust it. Adjust H SIZE & SIDE PIN

reparably.

Parallel

(No.52105)1-51

AV-48WP74

AV-56WP74

3.8.4.4 CONVERGENCE ADJUSTMENT(1) ••••••• RGB together

Measuring

instrument

Item

Test point

Adjustment part

Description

CONVERGENCE Signal

[6.CONVER A]

CPA03 : FINE H

CPA04 : FINE V

CPA05 : CAU V

CPA07 : CAU H2

NOTE:

generator

PHASE

Retain the default value of this adjustment. It is not

necessary to carry out the adjustment unless the image

on the screen is significantly deformative. If you

performed this adjustment, open the user MENU

adjustment

Remote

control unit

"INITIAL

SETUP"

and

execute

AUTO

CONVERGENCE after the adjustment.

(1) Receive NTSC cross-hatch signal.

Horizontal center line

(2) Select 6.CONVER A from SERVICE MENU.

(3) Select <CPA03> (FINE H).

(4) Adjust the peak A as shown in Fig. 2 agrees with the

horizontal center line by using [ 2 ] & [ 8 ] keys.

(5) Select <CPA04> (FINE V).

Vertical center line

Screen center

(6) Adjust the peak B as shown in Fig. 3 agrees with the

vertical center line by using [ 4 ] & [ 6 ] keys.

(7) Select <CPA05> (CAU V).

(8) Adjust the intersection point of the horizontal center

line and the vertical center line agrees with the

screen center by using [ 2 ] & [ 8 ]. (Fig.4)

Fig. 1:Screen center

(9) Select < CPA07>(CAU H2).

(10) Adjust the intersection point of the horizontal center

line and the vertical center line agrees with the

screen center by using [ 4 ] & [ 6 ]. (Fig.5)

Fig. 2:CPA03<FINE H> adj.

Fig. 3:CPA04<FINE V> adj.

(11) Press [MUTING] key and memorize the set values.

Fig. 4:CPA05<CAU V> adj.

Fig. 5:CPA07<CAU H> adj.

REMOTE CONTROL KEY POSITION

TV CATV VCR DVD

POWER

ASPECT

MULTI SCREEN

SPLIT

POP

INDEX EZ SURF

FREEZE

INPUT1

SWAP

SELECT

INPUT2

INPUT3

INPUT4

Number key

Screen center

adjustment

[2] : Up

[4] : Left

[6] : Right

[8] : Down

100+

RETURN+

/TV

VIDEO

THEATER NATURAL

DIGITAL-IN

STATUS

PRO

CINEMA

SOUND

LIGHT

C.C.

SLEEP TIMER DISPLAY

MUTING

VOL

CH+ / CH- keys

Adjustment

item select

[CH +] : Up

[CH - ] : Down

BACK

VCR/DVD

POWER

VCR CHANNEL

PREV NEXT

TV/VCR

REW

PLAY

PAUSE

STOP

REC

OPEN/CLOSE

STILL/PAUSE

RM-C1200G

1-52 (No.52105)

AV-48WP74

AV-56WP74

3.8.4.5 DEFLECTION ADJUSTMENT(2) ••••••• RGB respectively

Measuring

Item

Test point

Adjustment part

Description

instrument

OVERALL

Signal

generator

[ 6.CONVER A ]

CPA08 : FINE OFF

CCA01 : C H CENT

CCA02 : C H SIZE

CCA03 : C H LIN

CCA05 : C EW PIN

CCA09 : V SIZE

CCA10 : V KEY

NOTE:

CONVERGENCE

adjustment (1)

[LINE]

Retain the default value of this adjustment. It is not

necessary to carry out the adjustment unless the image on

the screen is significantly deformative. If you performed

this adjustment, open the user MENU "INITIAL SETUP"

and execute AUTO of CONVERGENCE after the

adjustment.

(1) Receive NTSC cross-hatch signal.

(2) Select 6.CONVER A from SERVICE MENU.

(3) Select <CPA08> (FINE OFF).

(4) Change the data 0 to1. (Clear the fine adjustment data)

(5) Press [INPUT] key to select <CCA01> (C H CENT).

Then a green cross-hatch pattern for adjustment will be

displayed on the screen.

Remote

control unit

CCA11 : TB PIN

For this adjustment, it is necessary to use a remote control unit (e.g. RM-

C322G) with INPUT key. In order to change the adjusting items, use

INPUT key. When you press INPUT key, the adjusting items will change in

the order of CPA

CCA

CBA key.

Fourth lines from the horizontal center line right

(6) Make sure that the heavy lines as shown in figure are

almost in alignment with the lines of the green cross-

hatch pattern (reference color). If the lines are out of

alignment significantly, adjust <CCA02> (C H SIZE),

(V SIZE) and <CCA11> (TB PIN), respectively. (Refer

to under figure)

(7) Press [SELECT] key to change the adjusting color to

red and blue, in turn, and make the adjustments in the

same manner as for 6. above.

*In adjustments for red and blue, the adjustment of

<CCA10> (V KEY) is also available.

Cursor

NOTE:

Fourth lines from the vertical center

line upward and downward.

Press [OK] key to change the display colors.

Whenever [OK] key is pressed, the menu will

sequence in this order: "Two colors (adjusting

color+green)"--->"Three colors (RGB)"

(8) When the adjustments have been completed, press

[MUTING] key and memorize the set values.

(9) Select <CPA08>.

AV-48WP74

AV-56WP74

1060 182

1240 213

348

407

600

700

164

192

136

159

102

SPAN TABLE (mm)

(10) Change the <CPA08> 1 to 0.

(11) Press [MUTING] key and memorize the set values.

REMOTE CONTROL KEY POSITION

[RM-C322G]

TV CATV VCR DVD

POWER

ASPECT

MULTI SCREEN

SPLIT

POP

INDEX EZ SURF

FREEZE

INPUT1

SWAP

SELECT

SELECT key

For adjusting

color change

INPUT2

INPUT3

INPUT4

<CCA02> H. SIZE

<CCA09> V. SIZE

<CCA10> V KEY

<CCA11> TB PIN

100+

RETURN+

/TV

A=B

THEATER NATURAL

VIDEO

DIGITAL-IN

STATUS

PRO

CINEMA

SOUND

SLEEP TIMER DISPLAY

LIGHT

C.C.

INPUT key

PARALLEL

CPA

CCA

CBA

MUTING

CH+ / CH- key

Item No.change

[CH+] : up

VOL

MUTING key

adjustment

data in memory

<CCA03> C H LIN

For storing

BACK

[CH- ] : down

VCR/DVD

POWER

VCR CHANNEL

PREV NEXT

TV/VCR

STRAIGHT

OK key

For display colors

change for adjusting

VOL+ / VOL-

key

REW

PLAY

STRAIGHT

PAUSE

STOP

REC

Setting value

change

[VOL+] : up

[VOL -] : down

OPEN/CLOSE

STILL/PAUSE

RM-C1200G

<CCA05> EW PIN

(No.52105)1-53

AV-48WP74

AV-56WP74

Measuring

instrument

Item

Test point

Adjustment part

Description

OVERALL

Signal

generator

[ 7.CONVER B ]

NOTE:

CONVERGENCE

adjustment (2)

[POINT]

Perform this adjustment after performing OVERALL

CONVERGENCE adjustment (1).

(1) Select 7.CONVER B from SERVICE MENU. Then

appear green cross-hatch pattern for adjustment.

(See Fig.1)

Remote

control unit

(2) Press [ 2 ] / [ 4 ] / [ 6 ] / [ 8 ] key respectively, move

the cursor to the adjusting point.

(3) Press [CH+] / [CH-] / [VOL+] / [VOL-] key, adjust the

position of the adjusting point so that it is located at

the place as shown in Fig1.

(4) Press [SELECT] key to select the red and blue

cross-hatch patterns, respectively, and make

convergence adjustments so that they align with the

adjusting points of the green cross-hatch pattern

(reference color).

(5) Press [OK] key to change the display colors to three

colors from two colors (adjusting color + green) and

make sure that the convergence has been aligned

with each other.

(6) Press [INPUT 2] or [INPUT4] key. After changing the

pattern to the fine grid cross-hatch pattern, make

sure that the convergence has been adjusted

properly.

Cursor

Point of adjustment

Fig.1

<CROSS-HATCH (H13 x V15 points) >

(7) Press [MUTING] key and memorize the set values.

REMOTE CONTROL KEY POSITION

TV CATV VCR DVD

POWER

ASPECT

MULTI SCREEN

SPLIT

POP

INDEX EZ SURF

Fig.2

FREEZE

INPUT1

SWAP

SELECT

SELECT key

For adjusting

color change

INPUT2

INPUT3

INPUT4

INPUT key

Number key

For cursor shifting

[2] : up

[4] : left

[6] : right

pattern

522

611

For adjustment

change

INPUT 1/3 = Cross-hatch

INPUT 2/4 = Fine grid

cross-hatch

100+

RETURN+

/TV

AV-48WP74

AV-56WP74

174

204

348

407

435

509

164

192

246

287

335

VIDEO

THEATER NATURAL

DIGITAL-IN

STATUS

PRO

CINEMA

SOUND

LIGHT

C.C.

SLEEP TIMER DISPLAY

[8] : down

SPAN TABLE (mm)

MUTING

MUTING key

For storing adjustment

data in memory

VOL+ / VOL-

VOL

CH+ / CH- keys

BACK

For convergence

adjustments

OK key

VCR/DVD

POWER

VCR CHANNEL

PREV NEXT

TV/VCR

For display colors

change for adjusting

[CH+] : up

REW

PLAY

[CH- ] : down

[VOL+] : left

[VOL -] : right

PAUSE

STOP

REC

OPEN/CLOSE

STILL/PAUSE

RM-C1200G

1-54 (No.52105)

AV-48WP74

AV-56WP74

3.8.5 VIDEO ADJUSTMENT

Measuring

Item

Test point

Adjustment part

Description

instrument

A-D

CONVERTER

OFFSET

Signal

generator

[1.PICTURE/SOUND] [WHITE BALANCE LOW LIGHT ADJUSTMENT for

F44 : Image

adjustment

F45 : Image

adjustment of mode

change

F47 : Minimum value

B at the time of

detection

F48 : Maximum value

A at the time of

detection

SINGLE SCREEN]

(1) Input the 480i (DVD) whole black signal from the

COMPONENT VIDEO terminal.

(2) Select STANDARD mode with [VIDEO STATUS]

key.

(3) Select FULL mode with [ASPECT] key.

(4) Select 1.PICTURE / SOUND from SERVICE MENU.

(5) It goes into the zero mode screen of difference

adjustment of color, using <F44>(Image adjustment)

as 0 to 1, and using <F45>(Image adjustment mode

change) as 0 to 3.

(6) Set <F47> (minimum value B at the time of

detection) to 0 and <F48> (maximum value A at the

time of detection) to 0.

Remote

control unit

adjustment (1)

[8.PP]

ADM012 : R offset

AMD013 : G offset

AMD014 : B offset

(7) Press [MUTING] key and memorize the set value.

(8) Press [BACK] key and display SERVICE MENU

screen again.

Upper side of screen

whole black

(9) Select 8. PP from SERVICE MENU.

(10) Adjust <ADM012> (R offset setup) and <ADM014>

(B offset setup) so that the adjustment result out put

screen in the upper half of a screen becomes black

color.(Fig.1)

(11) If the screen is reddish, adjust <ADM012>(R offset

setup) so that the redness is reduced to the

minimum.

(12) If the screen is bluish, adjust <ADM014>(B offset

setup) so that the blue is reduced to the minimum.

(13) Press [MUTING] key and memorize the set value.

Fig. 1 <FULL screen>

To be slightly whitish

rather than whole black

[BRIGHTNESS ADJUSTMENT for SPLIT RIGHT

SCREEN]

(1) Select STANDARD mode with [VIDEO STATUS]

key.

(2) Select FULL mode with [ASPECT] key.

(3) Press [SPLIT] key to enter the SPLIT screen mode,

then input gray scale signal on both left and right

channels.

(4) Select 1.PICTURE/SOUND from SERVICE MENU.

(5) It goes into the Y adjustment MAX mode, using

<F45> as 0 and using <F44> as 0 to 1.

Fig. 2 <SPLIT screen>

(6) Set <F47> to 16 and <F48> to 16.

(7) Press [MUTING] key and memorize the set value.

(8) Press [BACK] key and display the SERVICE MENU.

(9) Select 8. PP from SERVICE MENU.

(10) Adjust <ADM013> (G offset setup) so that the

screen on the right upper side becomes slightly

whitish rather (6% black) than whole black.(Fig.2)

(11) Press [MUTING] key and memorize the set value.

(No.52105)1-55

AV-48WP74

AV-56WP74

Measuring

instrument

Item

Test point

Adjustment part

Description

A-D

CONVERTER

OFFSET

Signal

generator

[1.PICTURE/SOUND] [WHITE BALANCE LOW LIGHT ADJUSTMENT for

F44 : Image

adjustment

SPLIT RIGHT SCREEN]

(1) Press [SPLIT] key to enter the SPLIT screen mode.

(2) Select STANDARD with [VIDEO STATUS] key.

(3) Select FULL mode with [ASPECT] key.

(4) Select 1 PICTURE SOUND from SERVICE MENU.

(5) It goes into the zero mode screen of difference

adjustment of color, using <F45>(Image adjustment

mode change) as 0 to 3 and <F44>(Image

adjustment) as 0 to 1.

(6) Set <F47> (minimum value B at the time of

detection) to 0 and <F48> (minimum value A at the

time of detection) to 0.

(7) Press [MUTING] key and memorize the set value.

(8) Press [BACK] key and back to SERVICE MENU.

(9) Select 8.PP from SERVICE MENU.

Remote

control unit

F45 : Image

adjustment of mode

change

F47 : Minimum value

B at the time of

detection

F48 : Maximum value

A at the time of

detection

adjustment (2)

[8.PP]

ADM012 : R offset

AMD013 : G offset

AMD014 : B offset

(10) Adjust <ADM012> (R offset setup) and <ADM014>

(G offset setup) so that right upside screen becomes

whole black.

Whole black

(11) Press [MUTING] key and memorize the set value.

(12) Select 1.PICTURE/SOUND from SERVICE MENU.

(13) Change the data of <F44> 1 to 0 and <F45> 3 to 0.

(14) Press [MUTING] key and memorize the set value.

Fig. 3 <SPLIT screen>

1-56 (No.52105)

AV-48WP74

AV-56WP74

Measuring

instrument

Item

Test point

TP-R

[R CRT

SOCKET PWB]

TP-G

[G CRT

SOCKET PWB]

TP-B

[B CRT

SOCKET PWB]

Adjustment part

Description

RGB CUTOFF

adjustment

Signal

generator

[1.PICTURE/SOUND]

S14: CUTOF R

S16: CUTOF G

S18: CUTOF B

(1) Receive NTSC whole black (0%) signal.

(2) Select STANDARD mode with [VIDEO STATUS]

key.

(3) Select REGULAR mode with [ASPECT] key.

(4) The COLOR TEMP set at the LOW mode.

(5) Connect the oscilloscope to TP-G on the G CRT

SOCKET PWB.

(6) Select 1.PICTURE/SOUND from SERVICE MENU.

(7) Select <S16> (CUTOF G).

Oscilloscope

Remote

control unit

R SCREEN VR

G SCREEN VR

B SCREEN VR

[FOCUS PACK]

(8) Adjust <S16> so that the central 0% signal portion

and the non-signal portion of both sides may

become the same voltage.

(9) Press [MUTING] key and memorize the set value.

(10) Receive 480i component whole black (0%) signal.

(11) Set <S16> data same as memorized NTSC <S16>

data.

(12) Set 1080i component whole black (0%) signal.

(13) Set <S16> data same as memorized NTSC <S16>

data.

TP-E

TP-G

(14) Connect the oscilloscope to TP-R <S14> (CUTOF

R) and adjust same manner as for 6. ~ 13. above.

(15) Connect the oscilloscope to TR-B <S18> (CUTOF

B).and adjust same manner as for 6. ~ 13. above.

(16) Adjust SCREEN VR for RGB respectively, so that

the black (3%) becomes faintly whitish.

CRT SOCKET PWB

Whole black signal (0%)

No signal

NOTE :

If it is difficult to adjust the SCREEN precisely, adjust

the SCREEN VR for one of three colors while

masking other two colors.

Regular mode

screen

Oscilloscope

waveform

0 %

(No.52105)1-57

AV-48WP74

AV-56WP74

Measuring

instrument

Item

Test point

Adjustment part

Description

WHITE

Signal

generator

[1.PICTURE/SOUND]

S14: CUTOF R

S16: CUTOF G

(1) Receive NTSC black & white pattern signal (color

off).

(2) Select STANDARD mode with [VIDEO STATUS]

key.

(3) The COLOR TEMP is set at the LOW mode.

(4) Select 3.WHITE BALANCE from SERVICE MENU.

(5) Increase bright level to confirm LOW-LIGHT with

[VOL +] key.

BALANCE

(LOW LIGHT)

adjustment

Remote

control unit

S18: CUTOF B

S20: CUTOF SW R

S21: CUTOF SW G

S22: CUTOF SW B

(6) Adjust using [ 4 ] / [ 7 ] (R CUTOFF), [ 6 ] / [ 9 ] (B

CUTOFF) key so that a black portion may become

black.

3. WHITE BALANCE

(7) Press [MUTING] key and memorize the set values.

(8) Input 480i component black & white pattern signal

from COMPONENT VIDEO terminal.

(9) Repeat steps 5 ~ 7 above.

(10) Input 1080i component black & white signal from

COMPONENT VIDEO terminal.

(11) Repeat steps 5 ~ 7 above.

BRIGHT LEVEL

DRIVE

CUTOFF

DRV

CUT

NOTE :

Setting value

Before starting the adjustment, warm up the unit for

more than 30 minutes.

SETTING VALUE

NTSC

DRV R 073 B 060

CUT R 188 G 149 B 215

133

480i

DRV R 074 B 058

CUT R 194 G 149 B 210

1080i

DRV R 074 B 058

CUT R 195 G 149 B 210

REMOTE CONTROL UNIT

EXIT

R CUTOFF

G CUTOFF

B CUTOFF

R CUTOFF

G CUTOFF

B CUTOFF

OSD ON/OFF

1-58 (No.52105)

AV-48WP74

AV-56WP74

Measuring

instrument

Item

WHITE

BALANCE

(HIGH LIGHT)

adjustment

Test point

Adjustment part

Description

Signal

generator

[1.PICTURE/SOUND]

S10: DRIVE R

S12: DRIVE B

(1) Receive NTSC black & white signal (color off).

(2) Select STANDARD mode with [VIDEO STATUS]

key.

(3) The COLOR TEMP is set at LOW mode.

(4) Select 1.PICTER/SOUND from SERVICE MENU.

(5) Select <S10> (DRIVE R) or <S12> (DRIVE B).

(6) Adjust <S10> or <S12> so that the natural white

should be visible.

Remote

control unit

1. PICTUER/SOUND

NTSC FULL DA

FL MUTE

(7) Press [MUTING] key and memorize the set values.

(8) Input 480i component black & white signal from

COMPONENT VIDEO terminal.

(9) Repeat steps 5 ~ 7 above.

(10) Input 1080i component black & white signal from

COMPONENT VIDEO terminal.

(11) Repeat steps 5 ~ 7 above.

Setting Item

Setting value

S10

DRIVE R

INITIAL SETTING VALUE

Setting value

Signal

Item

NTSC

073

480i

074

058

1080i

074

S10

S12

060

058

SUB BRIGHT

adjustment

Signal

generator

[1.PICTURE/SOUND]

S03: BRIGHT

(1) Receive NTSC black & white signal.

(2) Select STANDARD mode with [VIDEO STATUS]

key.

(3) The COLOR TEMP is set at the LOW mode.

(4) Select 1.PICTURE/SOUND from SERVICE MENU.

(5) Select <S03> (BRIGHT).

Remote

control unit

(6) Set initial setting value. (See Table)

(7) If the brightness is not the best with the initial setting

value, make fine adjustment until you get the best

brightness.

Setting value

480i

Signal

Item

NTSC

1080i

STANDARD THEATER STANDARD THEATER STANDARD THEATER

(8) Press [MUTING] key and memorize the set values.

(9) Select THEATER mode with [VIDEO STATUS] key.

(10) Select 1.PICTURE/SOUND from SERVICE MENU.

(11) Select <S03>.

S03

130

131

121

130

129

130

(12) Set initial setting value. (See Table)

(13) If the brightness is not the best with the initial setting

value, make fine adjustment until you get the best

brightness.

(14) Press [MUTING] key and memorize the set values.

(15) Input 480i component black & white signal from

COMPONENT VIDEO terminal.

(16) Repeat steps 2 ~ 14 above.

(17) Input 1080i component black & white signal from

COMPONENT VIDEO terminal.

(18) Repeat steps 2 ~ 14 above.

(No.52105)1-59

AV-48WP74

AV-56WP74

Measuring

instrument

Item

Test point

Adjustment part

Description

SUB

CONTRAST

adjustment

Signal

generator

[1.PICTURE/SOUND]

S04: CONTRAST

(1) Receive NTSC black & white signal.

(2) Select STANDARD mode with [VIDEO STATUS]

key.

(3) The COLOR TEMP is set at the LOW mode.

(4) Select 1.PICTURE/SOUND from SERVICE MENU.

(5) Select <S04> (CONTRAST).

Remote

control unit

(6) Set Initial setting value. (See Table)

(7) If the contrast is not the best with the initial setting

value, make fine adjustment of the <S04> until you

get the optimum contrast.

Setting value

480i

Signal

Item

NTSC

1080i

STANDARD THEATER STANDARD THEATER STANDARD THEATER

(8) Press [MUTING] key and memorize the set values.

(9) Select THEATER mode with [VIDEO STATUS] key.

(10) Select 1.PICTURE/SOUND from SERVICE MENU.

(11) Select <S04>.

S04

065

052

045

065

046

044

(12) Set Initial setting value. (See Table)

(13) If the contrast is not the best with the initial setting

value, make fine adjustment of the <S04> until you

get the optimum contrast.

(14) Input 480i component black & white signal from

COMPONENT VIDEO terminal.

(15) Repeat steps 2 ~ 13 above.

(16) Receive 1080i component black & white signal from

COMPONENT VIDEO terminal.

(17) Repeat steps 2 ~ 13 above.

SUB COLOR /

SUB TINT /

B-Y GAIN

Signal

generator

TP-R

TP-B

TP-E (GND)

[1.PICTURE/SOUND] [ Method of adjustment without measuring instrument ]

S01 : COLOR

S02 : TINT

S07 : B-Y

(1) Receive NTSC color bar signal.

(2) Select STANDARD mode with [VIDEO STATUS]

key.

Remote

control unit

adjustment (1)

(3) Select 1.PICTURE/SOUND from SERVICE MENU.

(4) Select <S01> (COLOR) or <S02> (TINT).

(5) Set the initial setting values.

(6) If the color or tint is not the best with the initial setting

values, make fine adjustment until you get the best

color or the best tint.

(7) Select <S07> (B-Y).

(8) Set the initial setting values.

(9) If the color bar is not clearly with the initial setting

value, make fine adjustment until you get the clearly

color bar.

(10) Press [MUTING] key and memorize the set values.

(11) Select THEATER mode with [VIDEO STATUS] key.

(12) Select <S01> or <S02> .

(13) Set the initial setting values.

(14) If the color or tint is not the best with the initial setting

values, make fine adjustment until you get the best

color or the best tint.

(15) Select <S07>.

(16) Set the initial setting values.

(17) If the color bar is not clearly with the initial setting

value, make fine adjustment until you get the clearly

color bar.

(18) Press [MUTING] key and memorize the set values.

(19) Input 480i component color bar signal from

COMPONENT VIDEO terminal.

(20) Repeat steps 2 ~ 18 above.

(21) Input 480p component color bar signal from

COMPONENT VIDEO terminal.

(22) Repeat steps 2 ~ 18 above.

(23) Input 1080i component color bar signal from

COMPONENT VIDEO terminal.

(24) Repeat steps 2 ~ 18 above.

1-60 (No.52105)

AV-48WP74

AV-56WP74

Measuring

instrument

Item

Test point

TP-R

TP-B

TP-E (GND)

Adjustment part

Description

SUB COLOR /

SUB TINT /

B-Y GAIN

Signal

generator

[1.PICTURE/SOUND] [ Method of adjustment with measuring instrument ]

S01 : COLOR

S02 : TINT

S07 : B-Y

(1) Receive NTSC color bar signal.

(2) Select STANDARD mode with [VIDEO STATUS]

key.

Oscilloscope

Adjustment (2)

(3) Connect the oscilloscope to TP-R on the R CRT

SOCKET PWB.

(4) Select 1.PICTURE/SOUND from SERVICE MENU.

(5) Select <S01> (COLOR) or <S02> (TINT).

(6) Adjust <S01> and <S02> to be following setting

value A[V]. (Refer to the bellow table)

Remote

control unit

(7) Press [MUTING] key and memorize the set values.

(8) Select THEATER mode with [VIDEO STATUS] key.

(9) Adjust <S01> and <S02> to be following setting

value B[V] same as above. (Refer to the bellow

table)

(-)

(10) Press [MUTING] key and memorize the set values.

(11) Select STANDARD mode with [VIDEO STATUS]

key.

(+)

(12) Connect the oscilloscope to TP-B on the B CRT

SOCKET PWB.

(W-Y)

(W-R)

(13) Adjust <S07> (B-Y) to be setting value C[V]. (Refer

to the bellow table)

Fig.1

(14) Press [MUTING] key and memorize the set values.

(15) Select THEATER mode with [VIDEO STATUS] key.

(16) Adjust <S07> to be setting value D[V]. (Refer to the

bellow table)

(17) Press [MUTING] key and memorize the set values.

(18) Confirm that LOW-LIGHT is not different after

adjusting COLOR, TINT and B-Y GAIN. If it is green

or magenta, to adjust LOW-LIGHT again. If adjust

again, to set offset value again.

(-)

(+)

(19) Press [MUTING] key and memorize the set values.

(20) Input 480i component color bar from COMPONENT

VIDEO terminal.

(W-B)

(21) Repeat steps 2 ~ 19 above.

(22) Input 480p component color bar from COMPONENT

VIDEO terminal.

Fig.2

(23) Repeat steps 2 ~ 19 above.

Setting

value

C [V]

Setting

value

D [V]

Setting value

A [V]

Setting value

B [V]

Setting item

Signal

(24) Input

1080i

component

color

bar

from

COMPONENT VIDEO terminal.

(25) Repeat steps 2 ~ 19 above.

STANDARD

THEATER

STANDARD THEATER

S01

S02

S01

S02

S07

(W-R)

(W-Y)

(W-R)

(W-Y)

(W-B)

NTSC

480i

+28

+19

+14

+11

+14

+19

+10

-17

-25

-24

+18

480p

1080i

+11

+12

-9

(No.52105)1-61

AV-48WP74

AV-56WP74

Measuring

instrument

Item

Test point

Adjustment part

Description

MTS INPUT

LEVEL

Remote

control unit

[1.PICTURE/SOUND]

A01 : IN LEVEL

(1) Select 1.PICTURE / SOUND from SERVICE MENU.

(2) Select <A01> (IN LEVEL).

check

(3) Verify that<A01> is set at its initial setting value.

MTS

SEPARATION

adjustment

TV audio

multiplex

signal

AUDIO OUT

L output

R output

[1.PICTURE/SOUND]

A02: LOW SEP.

A03 : HI SEP.

(1) Input stereo L signal (300Hz) from the TV audio

multiplex signal generator to the antenna terminal.

(2) Connect an oscilloscope to L OUTPUT pin of the

AUDIO OUT, and display one cycle portion of the

300Hz signal.

(3) Change the connection of the oscilloscope to R

OUTPUT pin of the AUDIO OUT, and enlarge the

voltage axis.

generator

Oscilloscope

Remote

control unit

(4) Select <A02> (LOW SEP.).

(5) Set the initial setting value of <A02>.

(6) Adjust <A02> so that the stroke element of the

300Hz signal will become minimum.

(7) Change the signal to 3kHz, and similarly adjust

<A03> (HI SEP.).

L-Channel

signal waveform

R-Channel

crosstalk portion

Minimum

1 cycle

1-62 (No.52105)

AV-48WP74

AV-56WP74

3.9 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT

3.9.1 HIGH VOLTAGE HOLD DOWN CIRCUIT

After repairing the high voltage hold down circuit.

This circuit shall be checked to operate correctly.

3.9.2 CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT

(1) Turn the power switch ON.

(2) As shown in figure bellow, set the resistor (between S1 connector 2 & 3).

(3) Make sure that the screen picture disappears (no raster).

(4) Temporarily unplug the power cord.

(5) Remove the resistor (between S1 connector 2 & 3).

(6) Again plug the power cord, make sure that normal pictures is displayed on the screen.

RESISTOR

6.8K

0.5% 1/4W

T502

FBT

S1 SERVICE CONNENTOR

TP-91

1 2 3 4 5

TP-E

CN003

X-RAY

R561

FR811

D812

D561

D562

R565

C562

C811

R562

S1 CONNENTOR

1 2 3 4 5

X-RAY2

X-RAY1

TP-E

TP-91

140V

(

)

(No.52105)1-63

AV-48WP74

AV-56WP74

SECTION 4

TROUBLESHOOTING

4.1 SELF CHECK FUNCTIONS

• This model has self-check functions that inform of the failure of the TV by detecting abnormality.

• Operational state is always monitored and the identified is memorized on the record.

4.1.1 HOW TO ENTER THE SELF-CHECK MODE

(1) Set the <SLEEP TIMER 30MIN> with [SLEEP TIMER] key.

(Fig.1)

SLEEP TIMER

(2) During the <SLEEP TIMER 30MIN> display, press [DIS-

30MIN

PLAY] key and [VIDEO STATUS] key at the same time.

(3) Then <TEST MODE> screen is displayed. (Fig.2)

(4) Press [ 4 ] key then <SELF-CHECK> screen is appear.

(Fig.3)

4.1.2 HOW TO EXIT FROM THE SELF-CHECK MODE

(1) By using the remote control unit, turn the power off. At this

time, the failure record is cleared.

(2) Take off the AC plug from the wall outlet. At this time, the

failure record is not cleared.

Fig.1

4.1.3 SELF-CHECK DISPLAY

The self-check results are shown on the following display.

Method of indication when the raster is not displayed (Fig.3).

TEST MODE

1. I²C STOP

Each failure is shown by turning POWER LED on and off at

specified intervals.

2. STATUS DISP.

Item

POWER LED ON / OFF intervals

Turning on and off 0.1-second intervals

Turning on and off 1-second intervals

4. SELF-CHK

5. CONVER OFF

X-ray protection

B1 over-current

protection

ROM CORRECTION : ACT

ROM VERSION :

Low B short protection Turning on and off 2-second intervals

Fig.2

4.1.4 EXPLANATION FOR ACTIVATION OF SELF-CHECK

FUNCTIONS

• For X-ray protection, B1 over-current protection and low B

short protection, the power of the TV is turned off if NG is de-

tected.

ITEM

RESULT COUNT

Immediately after the power is turned off, POWER LED will be

turning on and off.

When the power is turned off, you cannot turn the power on

again until the AC plug is taken out and put in again.

• The latest failure is stored on the record at the end.

The failure record for each check item is counted to the num-

ber of 9 at the maximum, When more than 9 failures are stored

on the record, the counter remains stopped at 9.

• SYNC is neither counted nor stored in memory.

• Because of the timing of Vcc start-up and shut-down of the IC

connecting to the I2C bus during which the power is turned on

and off, the operation may be interpreted as an error.

In order to avoid the misinterpretation, the self-check functions

should be started at about 3 seconds after the power is turned

on.

XRAY NG2

LOB OK

SYNC M:OK S:OK HD:NG

MEM OK AVSW OK

OCP

TIM

NG2

VCD

AIO

TUN

NG2

NG4

GCR

Fig.3 SELF-CHECK SCREEN

1-64 (No.52105)

AV-48WP74

AV-56WP74

Indication

Check item

Details of detection

Method of detection

XRAY

X-ray radiation protection

Operation of X-ray protection circuit. At about 3 seconds after the power is turned

D561, D562 : POWER & DEF PWB

on, the self-check function starts. If NG is

detected for 200ms, the power is turned off

automatically.

OCP

LOB

TIM

B1 over-current protection

Low B short protection

Timer

An B1 over-current is detected.

Q971 : POWER & DEF PWB

At about 3 seconds after the power is turned

on, the self-check function starts. If NG is

detected for 200ms, the power is turned off

automatically.

Operation of low B short protection At about 3 seconds after the power is turned

circuit. on, the self-check function starts. If NG is

Q1961(5V), Q1962(9V) : MAIN PWB detected for 200ms, the power is turned off

automatically.

The AC power frequency is changed Periodically check the power frequency by

as follows :

50Hz ---> 60Hz

60Hz ---> 50Hz

counting the AC pulse and monitor whether or

not the frequency is changed except for the

time immediately after resetting.

SYNC

Presence or absence of

synchronized signal

Presence of synchronized signal.

HD : HD signal

When entering the self-check mode, "OK" is

shown.

M : NTSC main signal

S : NTSC sub signal

IC1301(AN5392) : MI-COM & DIST

MODULE PWB

While running the mode with picture signal, if

the synchronized signal is disappeared, "NG"

is shown.

MEM

Memory (EEP-ROM)

AV switch

ACK is returned when I C traffic is The state is monitored every time when I C

carried out.

traffic is carried out. Then the state is counted

IC1703(MEMORY) : MI-COM & DIST as a failure if ACK is not returned.

MODULE PWB

AVSW

VCD

Ditto

IC1301(AN15852A) and

IC1501(CXA2069Q) : MAIN PWB

Video / chroma process

(RGB process)

Ditto

IC1301(AN5392) : MI-COM & DIST

MODULE PWB

Broadcast satellite tuner

Audio process

Not used

Ditto

AIO

Ditto

(MTS decode / audio control) UPC1851BCU

IC0201(CXA2134Q-X) : RECEIVER

PWB

3D YC separation

Ditto

IC3001(MN82832) : MI-COM & DIST

MODULE PWB

TUN

RF tuner

Ditto

Main & sub RF tuner

GCR

Ghost reduction

Not used

Ditto

Picture & Picture

(Multi-picture)

Ditto

IC101(TMS57128GJG) : MI-COM &

DIST MODULE PWB

DIST process

Ditto

IC201(JCC5054) : MI-COM & DIST

MODULE PWB

(No.52105)1-65

AV-48WP74

AV-56WP74

JVC SERVICE & ENGINEERING COMPANY OF AMERICA

DIVISION OF JVC AMERICAS CORP.

www.jvcservice.com(US Only)

JVC CANADA INC.

Head office

21 Finchdene Square Scarborough, Ontario M1X 1A7

(416)293-1311

(No.52105)

Printed in Japan

20034WPC

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