Acer H243H User Manual

Acer

Acer –LCD-H243H

Service Manual

LCD Monitor Acer H243H

- 0 -

Acer

Acer –LCD-H243H

Important Safety Notice

1. Safety precautions

This monitor is manufactured and tested on a ground principle that a user’s safety comes first.

However, improper used or installation may cause damage to the monitor as well as to the user.

Warning:

This monitor should be operated only at the correct power sources indicated on the label on the

rear of the monitor. If you’re unsure of the power supply in you residence, consult your local dealer

or Power Company.

Do not try to repair the monitor by yourself, as it contains no user-serviceable parts. This monitor

should only be repaired by a qualified technician.

Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric

shock to human bodies.

Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.

Put your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable

immediately and consult your closed dealer.

Always unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth. Apply

non-ammonia based cleaner onto the cloth, not directly onto the class screen.

Do not place heavy objects on the monitor or power cord.

2. Product safety notice

Many electrical and mechanical parts in this chassis have special safety visual inspections and the

protection afforded by them cannot necessarily be obtained by using replacement components rated

for higher voltage, wattage, etc. Before replacing any of these components read the parts list in this

manual carefully. The use of substitute replacement parts, which do not have the same safety

characteristics as specified in the parts list, may create shock, fire, or other hazards.

3. Service notes

When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.

Keep wires away from high voltage, high temperature components and sharp edges.

Keep wires in their original position so as to reduce interference.

Adjustment of this product please refers to the user’ manual.

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01 Product Specification

1. General:

H243H is designed with LVDS interface and VGA/DVI-D/HDMI input, it featured with embedded universal AC power supplies and

audio input. It’s a green product and meets all ROHS standard. The power button and display control buttons are on the front of the

monitor. The monitors shall automatically to display lower resolution video modes into1920x1080full screen display. The image can

be adjusted through OSD control. It support HDCP and color management function.

1.1 Main Features

Maximum resolution

Back light system

Pixel pitch

: 1920(x3) x 1080 @ 60Hz

: 4 CCFL (top & bottom edge side)

: 276.75 um (H) x 276.75 um (V)

: 531.36mm (H) x 298.89mm (V)

: 300cd/m² (TYP.)

Display area

Brightness

Contrast ratio

DCR

: 1000

1 (TYP.)

(1)

: 40000:1 (Max)

Response time (Tr+Tf)

: 5ms (TYP. ON/OFF)

2ms (Gray to Gray)

(2)

Viewing angle

Input interface

: 170° (H)/ 160°(V), (TYP.) (3)

: Analog (D-sub 15 pin)

Digital Option (DVI-D 24 pin & HDMI 19Pin)

: Compatible with VESA DPMS

Power management

Plug & Play

: VESA DDCCI

OSD language

: English, French, Spanish, Italian, Deutsch,

Simplified Chinese, Traditional Chinese, Japanese

(Dutch, Finnish, Russian depend on sale region)

Universal AC power supply

Note (1)(2)(3): This item spec depend on the LCD panel.

1.2 Accessories

AC Power Cord

VGA cable

: 1.8 m. (Black. Cord type depend on sale region)

: 1.8 m. (15 pin D-SUB, black cable with blue male connector)

User manual

: English (640Mb CD)

Warranty card

DVI cable (option)

: 1.8 m. (18+1 pin, black cable with white connector)

HDMI cable (option) : 1.8 m. (19 pin, black cable with white connector)

2. Operation Specifications

The unit should suffer no visible cosmetic damage and should operate with no degradation in display quality during exposure to

the operating conditions and after exposure to the non-operating conditions, in any sequence.

2.1 Environmental conditions

2.1.1 Operating:

Temperature range

Relative humidity

: 0°C to 50°C

: 5% to 90%

2.1.2 Storage^{note 1}

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Temperature range

Humidity range

: -20°C to 60°C

: 5% to 90%

2.1.3 Altitude ^{note 2}

Operating

Storage

10000 ft (Ta=50, t=24h)

30000 ft (Ta=30, t=24h )

Note 1: Temperature and relative humidity range must be in the area shown as the following figure due to panel

limited

Note 2: Altitude spec must not over panel spec.

2.2 Safety, EMC, Ergonomics and Compatibility Requirements

Safety & EMC

Ergonomics

MET, CB, Bauart, CCC, FCC, CE, VCCI-B

MPRII ISO13406-2

Compatibility

Windows 95/98/Me/2000, Windows XP, Window Vista

Energy Star

Power Management

2.3 Electrostatic Discharge Requirements

The subject unit must withstand ±8KV for contact discharge and ±15KV for air discharge of Electrostatic Discharge

and meet the standard of IEC61000-4-2(EN55024). (without discharge on VGA/DVI pin)

2.4 Reliability

The MTBF of this product shall be greater than 25,000 hours excluding the LCD panel. The LCD panel life which is

defined as the time period for the maximum luminance to reduce to 50% of the initial value is 40,000 hours minimum at

the condition of displaying an all WHITE field at mid Brightness and Contrast settings.

3. Electrical and Optical Characteristics and Performance

3.1 Main Power Supply

3.1.1AC Input Voltage Range

It is a universal type and the input voltage range is from 100 ~ 240Vrms

3.1.2 AC Input Current

1.5A (max) at 100VAC input

0.8A (max) at 240VAC input

AC Frequency Range

The frequency range is from 50Hz to 60Hz

Inrush Current

a. 40A max at cold-start, 25°C, DC output full-loading and 100Vac input

b. 60A max at cold-start, 25°C, DC output full-loading and 240Vac input

Regulator Efficiency

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≥75%

(DC output full loading and nominal AC input voltage range)

Ripple and Noise

Total composite ripple and noise less than 800mV for +25V output, and less than 150mV for +5V output, and 50mV for

+3.3V output tested by DC loading side parallel with a 47uF/EC and 0.1uF/Ceramic. Capacitors and measured band-width

with DC-20MHz

DC Output Voltage and Current

3.1 Brightness output

The test to verify specifications in this section shall be performed under the following standard conditions unless

otherwise noted.

Temperature

: 25 ± 5°C

Test pattern

: white

Video Resolution

Video input level

Warm-up time

: 1920 x 1080

: 700 mV ± 2%

: 30 minutes

Set brightness control and also contrast control at maximum, to measure the screen center, the light output shall BL ≥ 240

cd/m²(as panel spec).

3.2 White balance

The test standard conditions refer to Sec 3.1.( Brightness and contrast are under default value )

Chromaticity Coordinate

Mode

9300K

6500K

0.283 ± 0.030

0.313 ± 0.030

Panel While x

0.297 ± 0.030

0.329 ± 0.030

Panel While y

Cool

Warm

User

3.3 Brightness uniformity

The test standard conditions refer to Sec 3.1.

Min. luminance of nine points (backlight)

75%

≥

Max.luminance of nine points (backlight)

L/10

L/2

W/10

W/2

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4. Input / Output Signal Specifications

4.1 Video signals

Analog RGB signal:

Sync:

0.7Vp-p (Input impedance = 75 Ohm)

TTL level (Input impedance ≧ 1k Ohm)

Positive and negative sync of Separate Horizontal/Vertical Sync

Digital : TMDS Signal: (min) ±200mVpp@24Bit

4.2 Signal Timing

Through D-SUB/DVI connectors, this unit can support F_H= 31~80 KHz, Fv=55~76Hz, with maximum

pixel clock 165MHz input signal and WSXGA+ output. Modes details as below:

VESA MODES

Pixel Clock

Mode

VGA

Resolution

Total

H Frequency

V Frequency

(MHz)

25.175

31.500

36.000

40.000

50.000

49.500

65.000

75.000

78.750

108

640x480

800x600

800 x 525

832 x 520

840 x 500

1024 x 625

1056 x 628

1040 x 666

1056x625

1344x806

1328x806

1312x800

1600x900

1800x1000

1688x1066

1650x750

1680x831

1792x795

1904x931

1936x942

1864x1089

2240*1089

2160x1250

2080x1111

31.469

37.861

37.500

35.156

37.879

48.077

46.875

48.363

56.476

60.023

67.5

59.941

72.809

75.000

56.250

60.317

72.188

75.000

60.004

70.069

75.029

SVGA

800x600

1024x768

1152x864

1280x960

1280x1024

1280x720

1280x800

1360x768

1440x900

1400x1050

1680x1050

1600x1200

1920x1080-R

XGA

VESA

108

63.981

79.976

44.955

49.702

47.712

55.935

70.635

65.317

65.290

75.000

66.587

60.020

75.025

59.940

59.810

60.015

59.887

75.000

59.978

59.954

60.000

59.934

108.000

135.000

74.176

83.500

85.500

106.500

136.750

121.75

146.250

162.000

138.50

SXGA

VESA

WXGA

WXGA+

SXGA+

WSXGA+

UXGA

EGA

IBM MODES

31.469

720x400

900x449

864x525

1152x667

1568x909

70.087

28.322

MAC MODES

VGA

SVGA

SXGA

640x480

832x624

1152x870

49.722

68.700

66.66

74.55

75.000

30.24

57.28

84.520

Note: 1. Non-interlace signals only (An interlace signal cannot be display)

2. Please refer to F/W specification for more detail

3. Each frequency of Power Macintosh and Sun Ultra is a reference value

4.3 Timing requirements

The LCD monitor must be capable of displaying standard resolutions within the vertical frequency range of 55 ~ 76 Hz and

the horizontal scan range of 31 ~ 80 KHz with maximum pixel clock of 190MHz.

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Vertical / Horizontal Sync polarity: positive or negative.

If input signal is out of range of horizontal 31~80 KHz or vertical 55-76Hz, or pixel clock large than 165MHz, message

“Input Not Supported” is shown on screen.

4.1DDC data

H243H Analog

H243H DVI

5. Function Specifications

All the tests to verify specifications in this section shall be performed under the following standard conditions unless otherwise

noted. The standard conditions are:

Temperature

: 25 ± 5°C

Warm-up time

: 30 minutes minimum

: All the specified modes

Checking display modes

5.1Panel general specifications

General specifications

Supplier

AUO

Model name

Display Area

Pixel Pitch

M240HW01-V0

531.36 × 298.89

276.75(Per one triad) × 276.75

Display Colors:

16.7M colors (RGB 6-bit + Hi_FRC)

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Number of Pixel

Pixel Arrangement

Brightness

1920 × 1080

R.G.B. Vertical Stripe

300 cd/m²(TYP.)

Contrast Ratio

Viewing Angle

Display Mode

Frame rate

1000 (TYP.)

170(Horizontal) / 160(Vertical)

Normally White

Response Time

Surface Treatment

Lamp

5ms (TYP. ON/OFF) / 2ms (Gray to Gray)

Anti-Glare, 3H

Outline Dimension

556.0(W) ×323.2(H) ×16.65(D) (TYP.)

5.2Keypad Function

5.2.1

Control buttons on the front bezel

CONTROL KEY

KEYS FUNCTION

[POWER]

Power on or power off the monitor

A. When “Main OSD” displays, press these keys to change the contents of an adjustment

item, or change an adjustment value

B. When “Main OSD” un-displays, press [►] to show “Audio” OSD and increase the

volume, press [◄] to show “Audio” OSD and decrease the volume .

[►], [◄]

A. When “Main OSD” un-displays, press [MENU] to enter OSD interface.

B. When “Main OSD” displays, press [MENU] to perform function of menu icon that is

highlight or enter next level menu.

[MENU]

[AUTO]

A. When “Main OSD” un-displays, press [AUTO] to perform auto-adjustment

B. When “Main OSD” displays, press [AUTO] to return to previous level menu

C. When “Empowering Technology OSD” displays, press [AUTO] to exit the OSD

A. When “Main OSD” un-displays, press [e Color] to show “Empowering Technology

OSD”.

[e Color ]

B. When “Main OSD” displays, press [e Color] to exit the OSD, and to show “Empowering

Technology OSD”

A. Press ”input key” one time to search (a port with signal in order)

B. Show “source icon” at the same time, as searching that port

C. Go into next port automatically, if search the port without signal

D. Display it, if search the port with signal

[Input select]

5.3Hot Key Operation

HOT KEY OPERATION

FUNCTION

◄

►

e Color AUTO MENU

POWER

DESCRIPTION

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Press [e], and then press

[POWER] for DC power on.

OSD menu will be shown with

“F” on the left top. Select “F” for

entering factory mode.

FACTORY

MODE

●

5.4OSD Structure

The On-Screen Display (OSD) shall be an easy to use icon based menu through keypad OSD buttons or remote control

unit. The unit shall leave the factory with all OSD controls set to their default values.

Control

First

Second

Third

Fourth

User

Default Value

Range

Text

Acer e color

Management

---

Standard

Graphics

Movie

empowering Technology

User mode

Text mode

0～100

Brightness

---

Standard mode

Graphics mode

Movie mode

User mode

Text mode

Picture

0～100

Contrast

---

Standard mode

Graphics mode

Movie mode

0～100

---

H. Position

V. Position

Focus

---

Clock

50 (1)

---

Warm

Cool

---

Color Temp

0～100

---

Red

Green

Blue

---

User

Auto Configure

H. Position

---

Depending on the keypad

position

0～100

10～120

---

OSD

V. Position

OSD Timeout

---

Full

---

Wide Mode

DDC/CI

Full

Aspect

Setting

---

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OFF

ACM

Input

---

OFF

---

OFF

VGA

DVI

---

HDMI

EMEA

NO-EMEA

English

Russian

Deutsch

Français

Español

Italiano

Dutch

Finnish

---

繁體中文

Deutsch

Français

Español

Italiano

Language

English

简体中文

日本語

Reset

---

Resolution

H. Freq

V. Freq

Input Type

S/N

---

Info

(2)

---

Notes: (1) Clock default 50 is for Visa timing. Others depend on timing.

(2) Depend on timing & S/N

6. SOP of firmware upgrade (

6.1 Operational condition:

Manufacturer of Scaler is Mstar)

Equipment: PC, ISP card, signal cable and power cable.

ESD requirements: antistatic wrists, antistatic gloves (fingers), and connecting cable

Name of ISP program: ISP_Tool_v3.7.5.exe

：

Manufacture of FW IC PMC/SST/MX

6.2 Operational steps:

1. Connection: connect PC to PCBA with signal cable, and then keep AC and DC in open state

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One port of ISP

program card

is connected to

PC print port.

2. Adjust ISP programming

Firstly, double click ISP_Tool_v3.7.5EXEI and open ISP program, then select “Device”, next select manufacturer model of

FW IC, which should be correspondent with that of PCBA FW IC. Double click Figure One.

FW IC

Model

﹐

Secondly download FW software: first select “READ”, and then load FW software in Rooter (Fig.2).

FW software

rooter

Software

Checksum

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Thirdly, select “Connect” and enter ISP MODE as in the following Figure 3.

Fourthly, select “AUTO”, and keep its default value. Click “RUN” for beginning programming. There will be prompting if

programming is OK.

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Note: if programming fails or success rate is not high, click “Config” and adjust its speed in “E2PROM DEVICE SETTING”

After connecting, AC ON,

DC ON

◆Flowing chart

Open ISP program

Choose manufacturer

and model of FW IC

LOAD FW software

Click Connect and enter

ISP MODE

Choose Config

and adjust

programming

Click AUTO and RUN for

beginning programming

Turn off power if

programming is OK

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2. Flat Panel Specification

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03 Exploded Diagram

3.1 H243H_SCREW_LIST

Q'T

Y(P

CS)

Fixed

T(kg*cm)

ITEM

Description

Remark

For

509146306 SCREW,P,CROSS,W/WAS

6.5±0.5

200R

,M3*6,Zn-Cc

SCREW,F,CROSS,M4*8,B

LACK,NL,ROHS(NYLOK

)

NVBD/PWRBD/HDMI

509216608

110R

12±1

For Hingle toBack cover

509412610

500R

509000000

700R

SCREW B CROSS T

T-4*10 BLK ROHS

8.5±0.5

For Hingle to Stand Front

For D-SUB CON&DVI

4.0±0.25

BOLT,#4-40x11.8,Ni

3.2. LCD Exploded drawing (All)

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04 Troubleshooting

4.1 No Power & LED Off

Unstable power

Check sampling

Circuit

Check F801,

R808,R806

Change F801,

R808,R806

Check the C

pin voltage of

IC803 if 3V

Check the R pin voltage

of IC803 about 2.5V

Change

IC803

yes

Check R832,IC801

Check pin6 of IC802

voltage is 14V

Check

FB801,D803,C8

07,C810 if short

yes

Change

FB801,D803,C807,

C810

yes

Check pin2 of

IC802 voltage

above 0.85V

Change R815, R 809, R848,

R 849, R850,R851,C809,

yes

END

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4.2

No raster

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4.2Black screen

Black Screen

Check power supply:

Pin 1, 2 of CN104

POWER Fail

Check power supply:

For U104

Check U101,

U102

Check reset:

pin 8 of U104

Check C161,

R183

Check Crystal

waveform

Pin 25,26 of U104

Check X101, C156,

C157,R191

Check CCFL_Enable

Pin 101 of U104

Check Pin 7 of CN104

Inverter Fail

Check Q102,

R101, R102

U104 fail

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4.4 Bad Screen

Bad Screen

Check LVDS

cable

Workmanship

Change LVDS

cable

LVDS cable NG

Check the pins

of U104

Check Crystal:

Pin 25,26 of U104

Change X101, C156,

C157

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4.5 White screen

White Screen

Check LVDS

Cable Insert OK?

Workmanship

LVDS cable NG

Panel NG

Change LVDS

Cable

Check VLCD is

+5V?

Check LVDS cable

Check Panel

Enable of U104

U104 Fail

Check Q101,

Q104, Q105, R105,

R108

Q101, Q104, Q105,

R105, R108 fail

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05 Spare parts List

82424171A120R

OEM PART NO DESCRIPTION

792381300701R PCBA,I/F BOARD(EMEA,W/SPK),LP2441-717 RO 50

MOQ

N/A

792381400700R PCBA,P/I BOARD,W/SPK,LP2441-717 ROHS

792381500000R PCBA,POWER KYEPAD/B,LP2441 ROHS

792381500010R PCBA,TOUCHPAD BOARD,LP2441 ROHS

453070801190R PWRCORD 16A/250V BLK 6FT VDE/KTL H05VV-F 50

453030300370R CABLE,DVI-D 18+1P MALE 6FT BLACK , ROHS

453030300371R CABLE,DVI-D 18+1P MALE 6FT BLACK

453010100380R CABLE,D-SUB 15P MALE 6FT BLACK/BLUE, ROH 50

CABLE AUDIO 1P 6FT BLACK/GREEN

453030300120R

CP03B06P0

430303002230R HRN LVDS FFC 30P 166.5mm W/TASTE

430300400390R HRN ASS'Y 4P 27MM UL1571#28

430300802060R HRN ASSY, 2X4P TO 1X8P ,220mm,UL1571#28

714050021200R ASSY BACK COVER,LP2441

714030022100R ASSY BEZEL ,LP2441

714011206200R ASSY STAND ,LP2441

714020018200R ASSY BASE,LP2441

501020228602R COVER,BACK,LP2441

502060201100R HINGE,LP2441

501260210800R STAND, LP2441

502090103100R CHASSIS,W /HDMI, W/DVI,LP2441

631102240130R LCP 24" M240HW01-V0-00(A)(AUO)ROHS

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06 Schematics and Layouts

6.1 PI BD Layout

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6.2 Switching Mode Power Supply circuit

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7.0 Assembly and Disassembly

The tool of Assembly and disassembly : 1) Electrostatic gloves 2) Electric screwdriver: the lengthe of screwdriver top is 6±0.5cm and

15±0.5cm ; the diameter of screwdriver top is Φ5*H5mm

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