Sharp R 2397 User Manual

R-2397

SERVICE MANUAL

S5708R2397H/X

COMMERCIAL

MICROWAVE OVEN

MODEL

R-2397

In interests of user-safety the oven should be restored to its original

condition and only parts identical to those specified should be used.

TABLE OF CONTENTS

Page

CAUTION, MICROWAVE RADIATION ...................................................................................................... 1

WARNING ................................................................................................................................................... 1

PRODUCT SPECIFICATIONS................................................................................................................... 2

GENERAL IMPORTANT INFORMATION ................................................................................................... 2

APPEARANCE VIEW................................................................................................................................. 3

OPERATION SEQUENCE ......................................................................................................................... 4

FUNCTION OF IMPORTANT COMPONENTS .......................................................................................... 5

SERVICING ............................................................................................................................................... 7

TEST PROCEDURE ................................................................................................................................ 10

TOUCH CONTROL PANEL ASSEMBLY .................................................................................................. 17

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..................................................... 24

MICROWAVE MEASUREMENT .............................................................................................................. 29

WIRING DIAGRAM .................................................................................................................................. 30

PICTORIAL DIAGRAM............................................................................................................................. 31

CONTROL PANEL CIRCUIT .................................................................................................................... 32

PRINTED WIRING BOARD ...................................................................................................................... 33

PARTS LIST............................................................................................................................................. 34

SHARP CORPORATION

R-2397

SERVICE MANUAL

PRODUCT SPECIFICATIONS

COMMERCIAL

R-2397

GENERAL INFORMATION

APPEARANCE VIEW

GENERAL IMPORTANT INFORMATION

ThisManualhasbeenpreparedtoprovideSharpCorp.Service

engineers with Operation and Service Information.

It is recommended that service engineers carefully study the

entire text of this manual, so they will be qualified to render

satisfactory customer service.

OPERATING SEQUENCE

CAUTION

MICROWAVE RADIATION

FUNCTION OF IMPORTANT

COMPONENTS

DO NOT BECOME EXPOSED TO RADIATION FROM

THE MICROWAVE GENERATOR OR OTHER PARTS

CONDUCTING MICROWAVE ENERGY.

SERVICING AND

TROUBLESHOOTING CHART

Service engineers should not be exposed to the microwave

energy which may radiate from the magnetron or other

microwave generating devices if it is improperly used or

connected. All input and output microwave connections,

waveguides, flanges and gaskets must be secured. Never

operate the device without a microwave energy absorbing

load attached. Never look into an open waveguide or

antenna while the device is energized.

TEST PROCEDURE

TOUCH CONTROL PANEL

ASSEMBLY

WARNING

COMPONENT

REPLACEMENT AND

ADJUSTMENT PROCEDURE

Never operate the oven until the following points are ensured.

(A) The door is tightly closed.

(B) The door brackets and hinges are not defective.

(D) The door is not deformed or warped.

(E) There is not any other visible damage with the oven.

MICROWAVE MEASUREMENT

WIRING DIAGRAM

Servicing and repair work must be carried out only by trained

service engineers.

All the parts marked "*" on parts list are used at voltages more

than 250V.

Removal of the outer wrap gives access to potentials above

250V.

PARTS LIST

All the parts marked "∆" on parts list may cause undue

microwave exposure, by themselves, or when they are dam-

aged, loosened or removed.

SHARP CORPORATION

OSAKA, JAPAN

R-2397

PRODUCT DESCRIPTION

SPECIFICATION

ITEM

DESCRIPTION

Power Requirements

230 Volts

50 Hertz

Single phase, 3 wire grounded

2.7 kW Approx. 13A

Power Consumption

Power Output

1700 watts nominal of RF microwave energy (Method of IEC 705)

Operating frequency of 2450MHz

Outside Dimensions

Width 510mm

Height 335 mm

Depth 470 mm

Cooking Cavity Dimensions

Control Complement

Width 330 mm

Height 180 mm

Depth 330 mm

Touch Control System

The combination of cooking time and microwave power

The oven can be programmed a series of up to 3 cookling stages.

The combination of microwave power and cooking time that can be input as

folllows.

Cooking

Sequence

Micrwave power level

that can be used.

Cooking time that can be iused.

Max. 30 minutes

1 Stage only

0-100%

0-40% all stages

Max. 30 minutes any stages

Max. 60 minutes for 2 stages

Max. 90 minutes for 3 stages

Max. 30 minutes for 3 stages

2 or 3 Stage

50-100%

NOTE: If the oven used with the power level above 40% on any stage, the

maximum cooking time is 30 minutes in total.

Microwave Power level

100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0%

MANUAL / REPEAT key, NUMBER keys

MICROWAVE POWER SETTING key

STOP / CLEAR key, START Key

DOUBLE QUANTITY key, DEFROST key

SET key, CHECK key, VOLUME key

Set Weight

Approx. 33kg

GENERAL INFORMATION

WARNING

THIS APPLIANCE MUST BE EARTHED

IMPORTANT

THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:

GREEN-AND-YELLOW

BLUE

BROWN

: EARTH

: NEUTRAL

: LIVE

R-2397

APPEARANCE VIEW

OVEN

1. Control panel

2. Hole for safety door latches

3. Ceramic floor

4. Splash cover

5. Oven light

6. Air intake filter

7. Air intake openings

8. Oven cavity

9. Door seals and sealing surfaces

10. Door hinges

11. Oven door with see-through window

12. Door safety latches

AUTO TOUCH CONTROL PANEL

13. Door handle.

14. Outer cabinet

DISPLAY AND INDICATORS

15. Removable cover over oven light bulb

16. Air vent openings

DEF CHECK

NUMBER

Check indicators after the oven starts to

confirm the oven is operating as desired.

1. Heating indicator

POWER

DOUBLE FILTER

17. Power supply cord

18 Mounting plate

This indicator shows cooking in progress.

2. Memory number indicator

3. Defrost indicator

19 Screw for mounting plate

4. Check mode indicator

5. Power level display

6. Time display

7. Filter indicator

8. Double quantity mode indicator

9. 3rd. stage indicator

10. 2nd. stage indicator

11. 1st. stage indicator

OPERATING KEYS

12. DOUBLE QUANTITY key

13. DEFROST key

14. NUMBER keys

15. MANUAL/ REPEAT key

16. STOP/CLEAR key

17. MICROWAVE POWER SETTING key

18. START key

19. SET key

20. VOLUME key

21. CHECK key

INSTALLATION INFORMATION

When this commercial microwave oven is installed near other commercial electrical appliances, connect a lead wire

to each equivalent potential terminal with equipotential marking between them (insert a lead wire between a washer and

an earth angle, and screw them), as shown in Fig. A-1, to make sure that they are at equivalent potential.

If any lead wire is not connected between them, when person touch them he/she will get a electric shock.

Equipotential marking

COMMERCIAL MICROWAVE OVEN

OTHER COMMERCIAL

ELECTRICAL APPLIANCE

Lead wire

Screw

Washer

Equivalent

potential terminal

Earth angle

(Equivalent potential terminal)

Lead wire

Figure A-1

R-2397

OPERATION SEQUENCE

OFF CONDITION

the relay RY1 stays closed. Shown in the display is the

remaining time, but the program is cancelled if the oven

is not started within 3 minutes.

Closing the door activates all door interlock switches

(1st latch switch, 2nd latch switch, 3rd latch switch and stop

switch)

6. MONITOR SWITCH CIRCUIT

The monitor switch is mechanically controlled by oven

door, and monitors the operation of the 1st latch switch.

6-1. When the oven door is opened during or after the cycle

of a cooking program, the 1st, 2nd, 3rd latch and stop

switches must open their contacts first. After that the

contacts (COM-NC) of the monitor switch can be

closed.

6-2. When the oven door is closed, the contacts (COM-NC)

of the monitor switch must be opened first. After that

the contacts (COM-NO) of the 1st, 2nd, 3rd latch and

stop switches must be closed.

IMPORTANT

When the oven door is closed, the monitor switch contacts

COM-NC must be open. When the microwave oven is

plugged in a wall outlet (230 volts, 50Hz), the line voltage is

supplied to the point A5+A7 in the control panel.

Figure O-1 on page 30

1. The digital display shows

NOTE: When the door is opened or after cooking, oven

lamp, blower motor and stirrer motors work for 1

minute.

6-3. When the oven door is opened and the contacts of the

1st latch switch remain closed, remains closed, the

fuse F6.3A will blow, because the monitor switch is

closed and a short circuit is caused.

MICROWAVE COOKING CONDITION

Touch MANUAL/ REPEAT key and enter a desired cooking

timewiththetouchingNUMBERkey.AndthentouchSTART

key.

MICROWAVE VARIABLE COOKING

When the microwave oven is preset for variable cooking

power, the line voltage is supplied to the high voltage

transformers intermittently within a 48 second time base

through the contacts of the relays RY3+RY4.

Function sequence Figure O-2 on page 30

CONNECTED COMPONENTS

Oven lamp/ Blower motor/ Stirrer motors

Power transformer (rear)

RELAY

RY1

The following levels of microwaves power are given.

RY3

Power transformer (front)

RY4

48 sec. ON

Number key

44sec. ON

1. The line voltage is supplied to the primary winding of the

high voltage transformer. The voltage is converted to

about 3.3 volts A.C. output on the filament winding and

high voltage of approximately 2000 volts A.C. on the

secondary winding.

2. The filament winding voltage (3.3 volts) heats the

magnetron filament and the high voltage (2000 volts) is

sent to the voltage doubling circuit, where it is doubled

to negative voltage of approximately 4000 volts D.C..

3. The 2450 MHz microwave energy produced in the

magnetron generates a wave length of 12.24 cm. This

energy is channelled through the waveguide (transport

channel) into the oven cavity, where the food is placed

to be cooked.

Number key 9

40 sec. ON

Number key 8

36 sec. ON

Number key 7

32 sec. ON

Number key 6

26 sec. ON

Number key 5

22 sec. ON

Number key 4

16 sec. ON

4. When the cooking time is up, a signal tone is heard and

the relays RY3+RY4 go back to their home position. The

circuits to the high voltage transformers. The relay RY1

remains and oven lamp, blower motor and stirrer motors

work for 1 minute.

Number key 3

12 sec. ON

Number key 2

8 sec. ON

Number key 1

0 sec. ON

5. When the door is opened during a cook cycle, the

switches come to the following condition.

Number key 0

CONDITION

DURING

COOKING

Closed

Open

DOOR OPEN

(NO COOKING)

SWITCH

CONTACT

COM-NO

COM-NC

COM-NO

NOTE: The ON/OFF time ratio does not exactly corre-

spond to the percentage of microwave power, be-

cause approx. 3 seconds are needed for heating up

the magnetron filament.

1st latch switch

Monitor switch

2nd latch switch

Stop switch

Open

Closed

Open

Closed

3rd latch switch

TWO MAGNETRON OPERATION SYSTEM

Two magnetrons MG1+MG2 are equipped in order to get

highermicrowavepoweroutput. Theprimarywindingsofthe

highvoltagetransformersT1+T2areconnectedsothateach

magnetron can be oscillated alternatively according to the

frequency of the power supply. Refer to the Figure 1 and 2.

The circuits to the high voltage transformers are cut off

whenthe1stlatch, 2ndlatch, 3rdlatchandstopswitches

are made open. The blower motor, stirrer motors and

oven lamp remains on even if the oven door is opened

after the cooking cycle has been interrupted, because

R-2397

T2: HIGH VOLTAGE

TRANSFORMER

T1: HIGH VOLTAGE

TRANSFORMER

(FRONT)

(REAR)

COMMERCIAL

FREQUENCY

(50HZ)

POWER OUTPUT

BY MAGNETRON 1

OPERATION OF

MAGNETRON

H. V. RECTIFIER

POWER OUTPUT

BY MAGNETRON 2

MG2: MAGNETRON (LOWER)

MG1: MAGNETRON (UPPER)

Figure B-1. High Voltage Circuit

Figure B-2. Operation of Magnetron

FUNCTION OF IMPORTANT COMPONENTS

MONITOR SWITCH

DOOR OPEN MECHANISM

The monitor switch is activated (the contacts opened) the

upper latch head and switch lever A while the door is

closed.Theswitchisintendedtorendertheoveninopera-

tive by means of blowing the fuse F6.3A when the

contacts of the 1st latch switch fail to open when the door

is opened.

1. The door release lever is pulled.

2. The upper latch head is lifted up by the linked door

release lever.

3. The latch lever is lifted up by the door release lever.

4. The joint lever is lifted up by the latch lever.

5. The lower latch head is lifted up by the joint lever.

6. Now both latch heads are lifted up, so they can be

released from the latch hook.

Function

1. When the door is opened, the monitor switch contacts

close (to the ON condition) due to their being normally

closed. At this time the 1st latch switch is in the OFF

condition (contacts open) due to their being normally

open contact switches.

7. Now the door can be opened.

Door release

Latch head

lever

2. As the door goes to a closed position, the monitor

switch contacts are opened and 1st latch switch con-

tacts are closed (On opening the door, each of these

switches operate inversely.)

3. If the door is opened and the 1st latch switch contacts

fail to open, the fuse F6.3A blows simultaneously with

closing of the monitor switch contacts.

Monitor switch

Latch hook

CAUTION:BEFORE REPLACING A BLOWN FUSE

F6.3A TEST THE 1ST LATCH SWITCH,

MONITOR SWITCH AND MONITOR RESIS-

TOR FOR PROPER OPERATION. (REFER

TO CHAPTER “TEST PROCEDURE”).

2nd. latch switch

1st. latch switch

Joint lever

Stop switch

MONITOR RESISTOR

The monitor resistor prevents the fuse F6.3A 250V burst-

ing when the fuse F6.3A 250V blows due to the operation

of the monitor switch.

Latch head

3rd. latch switch

Figure D-1. Door Open Mechanism

NOISE FILTER

The noise filter assembly prevents radio frequency inter-

ference that might flow back in the power circuit.

1ST LATCH SWITCH, 2ND LATCH SWITCH, 3RD

LATCH SWITCH AND STOP SWITCH

1. When the oven door is closed, the contacts COM-NO

must be closed.

2. Whentheovendoorisopened, thecontactsCOM-NO

must be opened.

WEAK POINT

Ifthewireharnessorelectricalcomponentsmakeashort-

circuit, this weak point blows to prevent an electric shock

or fire hazard.

R-2397

FUSE F6.3A 250V

MAGNETRON THERMISTOR

1. If the wire harness or electrical components are short-

circuited, this fuse blows to prevent an electric shock

or fire hazard.

2. The fuse also blows when 1st latch switch remains

closed with the oven door open and when the monitor

switch closes.

The air temperature around the lower magnetron is

detected through the resistance of the thermistor.

If the temperature is high, the control panel will display

"EE17" and the oven will stop to protect the lower

magnetron against overheat.

If the thermistor is open, the control panel will display

"EE16" and the oven will stop.

ASYMMETRIC RECTIFIER

The asymmetric rectifier is solid state device that pre-

vents current flow is both directions. And it prevents the

temperature rise of the high voltage transformer by

blowing the weak point when the high voltage rectifier is

shorted.

MAGNETRON THERMAL CUT-OUTS 145˚

These thermal cut-outs protect the magnetrons against

overheat. If their temperature go up higher than 145˚C

because the blower motor is interrupted, the ventilation

openings are blocked, the thermal cut-outs will open and

the line voltage to the high voltage transformer will be cut

off and the operations of the magnetrons will be stopped.

The defective thermal cut-out must be replaced with new

rated one.

ASYMMETRIC

RECTIFIER

HIGH VOLTAGE RECTIFIER

BLOWER MOTOR THERMAL CUT-OUT 115˚C

This thermal cut-out protect the blower motor against

overheat. If its temperature goes up higher than 115˚C

because the blower motor is locked or the ventilation

openings are blocked, the contacts of the thermal cut-out

will open and the line voltage to the control unit will be cut

off and the operation of the oven will be stopped. The

defectivethermalcut-outmustbereplacedwithnewrated

one.

The rated peak reverse voltage of D1 of the asymmetric

rectifier is 6 KV The rated peak reverse voltage of D2 of

the asymmetric rectifier is 1.7 KV. D1 and D2 of the

asymmetric rectifier or high voltage rectifier are shorted

when the each peak reverse voltage goes beyond the

each rated peak reverse voltage.

1. The high voltage rectifier is shorted by some fault

when microwave cooking.

2. The peak reverse voltage of D2 of the rectifier goes

beyond the rated peak reverse voltage 1.7 KV in the

voltage doubler circuit.

OVEN THERMAL CUT-OUT 115˚C

This thermal cut-out protects the oven against overheat. If

the temperature goes up higher than 115˚C because the

food catches fire, the contacts of thermal cut-out will open

and the line voltage to the control unit will be cut off and the

operation of the oven will be stopped. The defectivethermal

cut-out must be replaced with a new rated one.

3. D2 of the rectifier is shorted.

4. The large electric currents flow through the high

voltage winding of the high voltage transformer.

5. The large electric currents flow through the primary

winding of the high voltage transformer.

6. The weak point blows by the large electric currents.

7. The power supplying to the high voltage transformer

is cut off.

BLOWER MOTOR

The blower motor drives a blade which draws external

cool air. This cool air is directed through the air vanes

surrounding the magnetrons and cools the magnetrons.

This air is channelled through the oven cavity to remove

steam and vapours given off from the heating foods. It is

then exhausted through the exhausting air vents at the

oven cavity.

EXHAUST THERMISTOR

Thethermistorisanegativetemperaturecoefficienttype.

The temperature in the exhaust duct is detected through

the resistance of the thermistor.

If the temperature is high, the control panel will display

“EE7” and the oven will stop to avoid overheating and

catching fire.

STIRRER MOTOR

The stirrer motor drives a stirrer antenna to stir the

microwave radiation from the waveguide.

If the thermistor is open, the control panel will display

"EE6" and the oven will stop.

INTAKE THERMISTOR

This thermistor detects ambient air temperature.

R-2397

SERVICING

WARNING TO SERVICE PERSONNEL

Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with following parts

will result in electrocution.

High voltage capacitor, High voltage transformer, Magnetron, High voltage rectifier assembly, High voltage harness.

REMEMBER TO CHECK 3D

REMEMBER TO CHECK 4R

1) Disconnect the supply.

2) Door opened, and wedged open.

3) Discharge high voltage capacitor.

1) Reconnect all leads removed from components

during testing.

2) Replace the outer case (cabinet).

3) Reconnect the supply.

WARNING AGAINST THE CHARGE OF THE

HIGH-VOLTAGE CAPACITOR

4) Run the oven. Check all functions.

Microwave ovens should not be run empty. To test for

the presence of microwave energy within a cavity, place

a cup of cold water on the oven tray, close the door and

press Manual / Repeat key and set the microwave time

forone(1)minute.Setthepowerlevelto100%andpush

the START button. When the one minutes has elapsed

(timer at zero) carefully check that the water is now hot.

If the water remains cold carry out 3D checks and re-

examinetheconnectionstothecomponentbeingtested.

The high-voltage capacitor remains charged

about 60 seconds after the oven has been

switched off. Wait for 60 seconds and then short-

circuittheconnectionofthehigh-voltagecapacitor

(thatis, oftheconnectingleadofthehigh-voltage

rectifier) against the chassis with the use of an

insulated screwdriver.

Sharp recommend that wherever possible fault-finding

is carried out with the supply disconnected. It may in,

some cases, be necessary to connect the supply after

the outer case has been removed, in this event carry out

3D checks and then disconnect the leads to the primary

of the high voltage transformer. Ensure that these leads

remain isolated from other components and the oven

chassis. (Use insulation tape if necessary.) When the

testing is completed carry out 3D checks and reconnect

the leads to the primary of the high voltage transformer.

When all service work is completed, and the oven is fully assembled, the microwave power output should be checked

and microwave leakage test carried out.

TROUBLESHOOTING GUIDE

IMPORTANT: If the oven becomes inoperative because

of a blown fuse F2 F6.3A in the 1st latch

switch - monitor switch - monitor resisitor

circuit, check the 1st latch switch, monitor

switch and monitor resistor before re-

placing the fuse F6.3A.

When troubleshooting the microwave oven, it is helpful to

followtheSequenceofOperationinperformingthechecks.

Many of the possible causes of trouble will require that a

specific test be performed. These tests are given a

procedure letter which will be found in the “Test

Procedure”section.

R-2397

TEST PROCEDURE

POSSIBLE CAUSE

AND

DEFECTIVE PARTS

PPROBLEM

CONDITION

“ . “ does not appear on display when power

cord is plugged into wall outlet.

Control panel can not accept key in.

Fuse F6.3A blows when the door is opened.

Home fuse blowns when power cord is plugged

into wall outlet.

Weak point A017 blowns when power cord is

plugged into wall outlet.

Oven lamp, fan motor and stirrer motors do not

work for 1 minute whenever the door is opened

or after cooking.

OFF

CONDITION

Fuse F2 F6.3A blowns when power cord is

plugged into wall outlet.

Oven lamp does not light when door is opened.

(Blower and stirrer motors work)

Blower motor does not work when door is

opened. (Oven lamp lights and stirrer motors

work)

“EE 1” appear in display.

“EE 2” appear in display.

“EE 3” appear in display .

“EE 6” appear in display.

“EE 7” appear in display.

“EE 9” appear in display.

Oven lamp, blower motor and stirrer motors do

not work.

Oven lamp does not work.

Blower motor does not work.

Oven does not stop after end of cooking cycle or

whenSTOP/CLEARkeyistouched.(Ovenlamp,

blower motor and stirrer motors stop.)

Home fuse blows when starting the oven.

CONDITION

Oven goes into cook cycle but shuts down

before end of cooking cycle.

Oven seems to be operating but no heat is

produced in oven load.

It passed more than 1 minute after cooking but

oven lamp, blower motor and stirrer motors do

not stop.

“EE 0” appear in display .

“EE 16” appear in display.

“EE 17” appear in display.

“EE 8” appear in display .

“EE 10” appear in display .

Stirrer motors do not work.

R-2397

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

MAGNETRON TEST

NEVER TOUCH ANY PART IN THE CIRCUIT WITH YOUR HAND OR AN INSULATED TOOL

WHILE THE OVEN IS IN OPERATION.

CARRY OUT 3D CHECK.

Isolatethemagnetronfromhighvoltagecircuitbyremovingallleadsconnectedtofilamentterminal.

To test for an open circuit filament use an ohmmeter to make a continuity test between the

magnetron filament terminals, the meter should show a reading of less than 1 ohm.

To test for short filament to anode condition, connect ohmmeter between one of the filament

terminals and the case of the magnetron (ground). This test should be indicated an infinite

resistance. If a low or zero resistance reading is obtained then the magnetron should be replaced.

MICROWAVE OUTPUT POWER (IEC-705-1988)

The following test procedure should be carried out with the microwave oven in a fully assembled

condition (outer case fitted). Microwave output power from the magnetron can be measured by way

of IEC 705, i.e. It is measured by how much power the water load can absorb. To measure the

microwave output power in the microwave oven, the relation of calorie and watt is used. When P(W)

heating works for t(second), approximately P x t/4.187 calorie is generated. On the other hand, if

the temperature of the water with V(ml) rises ∆T (°C) during this microwave heating period, the

calorie of the water is V x ∆T.

The formula is as follows;

P x t / 4.187 = V x ∆ T

P (W) = 4.187 x V x ∆T / t

Our condition for water load is as follows:

Room temperature ......... around 20°C Power supply Voltage............... Rated voltage

Water load ................ 1000 g

Heating time ............ 25 sec.

Initial temperature ..............10±2°C

P=170x∆T

Measuring condition:

1. Container

The water container must be a cylindrical borosilicate glass vessel having a maximum material

thickness of 3 mm and an outside diameter of approximately 190 mm.

2. Temperature of the oven and vessel

The oven and the empty vessel are at ambient temperature prior to the start the test.

3. Temperature of the water

The initial temperature of the water is (10±2)°C.

4. Select the initial and final water temperature so that the maximum difference between the final

water temperature and the ambient temperature is 5K.

5. Select stirring devices and measuring instruments in order to minimize addition or removal of

heat.

6. The graduation of the thermometer must be scaled by 0.1°C at minimum and can be accurate

thermometer.

7. The water load must be (1000±5) g.

8. “t” is measured while the microwave generator is operating at full power. Magnetron filament

heat-up time is not included.

NOTE: The operation time of the microwave oven is “t + 3” sec. (3 sec. is magnetron filament heat-

up time.) Therefore total reheating time = 28 seconds.

Measuring method:

1. Measure the initial temperature of the water before the water is added to the vessel.

(Example: The initial temperature T1 = 11°C)

2. Add the 1 litre water to the vessel.

3. Place the load on the centre of the shelf.

4. Operate the microwave oven at HIGH for the temperature of the water rises by a value ∆ T of

(10 ± 2) K.

5. Stir the water to equalize temperature throughout the vessel.

6. Measure the final water temperature. (Example: The final temperature T2 = 21°C)

7. Calculate the microwave power output P in watts from above formula.

R-2397

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

Initial temperature............................................................................................... T1 = 11°C

Temperature after (25 + 3) = 28 sec. ................................................................. T2 = 21°C

Temperature difference Cold-Warm ................................................................... ∆T = 10°C

Measured output power

The equation is “P = 170 x ∆T” .............................................. P = 170 x 10°C = 1700 Watts

JUDGMENT: The measured output power should be at least ± 15 % of the rated output power.

CAUTION: 1°C CORRESPONDS TO 170 WATTS. REPEAT MEASUREMENT IF THE POWER IS

INSUFFICIENT.

1000g

T1˚C

T2˚C

Heat up for 28 sec.

HIGH VOLTAGE TRANSFORMER TEST

WARNING: High voltages and large currents are present at the secondary winding and

filament winding of high voltage transformer. It is very dangerous to work

near this part when the oven is on. NEVER make any voltage measurements

of the high-voltage circuits, including the magnetron filament.

CARRY OUT 3D CHECKS.

Disconnecttheleadstotheprimarywindingofthehighvoltagetransformer. Disconnectthefilament

and secondary winding connections from the rest of the HV circuitry. Using an ohmmeter, set on a

low range, it is possible to check the continuity of all three windings. The following readings should

be obtained:

a. Primary winding

b. Secondary winding

c. Filament winding

approx. 1.06 Ω

approx. 57.3 Ω

less than 1 Ω

If the reading obtained are not stated as above, then the high voltage transformer is probably faulty

and should be replaced.

CARRY OUT 4R CHECKS.

HIGH VOLTAGE RECTIFIER ASSEMBLY TEST

HIGH VOLTAGE RECTIFIER TEST

CARRY OUT 3D CHECKS.

Isolate the high voltage rectifier assembly from the HV circuit. The high voltage rectifier can be

tested using an ohmmeter set to its highest range. Connect the ohmmeter across the terminal B+C

of the high voltage rectifier and note the reading obtained. Reverse the meter leads and note this

second reading.

The normal resistance is infinity in one direction and more than 100 kΩ in the other direction.

CARRY OUT 4R CHECKS.

ASYMMETRIC RECTIFIER TEST

CARRY OUT 3D CHECKS.

ASYMMETRIC

RECTIFIER

HIGH VOLTAGE RECTIFIER

R-2397

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

IsolatethehighvoltagerectifierassemblyfromtheHVcircuit. Theasymmetricrectifiercanbetested

using an ohmmeter set to its highest range. Contact the ohmmeter across the terminals A+B of the

asymmetric rectifier and note the reading obtained. Reverse the meter leads and note this second

reading. If an open circuit is indicated in both directions then the asymmetric rectifier is good. If an

asymmetric rectifier is shorted in either direction, then the asymmetric rectifier is probably faulty and

must be replaced with high voltage rectifier. When the asymmetric rectifier is defective, check

whether magnetron, high voltage rectifier, high voltage wire or filament winding of the high voltage

transformer is shorted.

CARRY OUT 4R CHECKS.

NOTE: FORMEASUREMENTOFTHERESISTANCEOFTHERECTIFIER, THEBATTERIESOF

THE MEASURING INSTRUMENT MUST HAVE A VOLTAGE AT LEAST 6 VOLTS,

BECAUSE OTHERWISE AN INFINITE RESISTANCE MIGHT BE SHOWN IN BOTH

DIRECTIONS.

HIGH VOLTAGE CAPACITOR TEST

CARRY OUT 3D CHECKS.

A. Isolate the high voltage capacitor from the circuit.

B. Continuity check must be carried out with measuring instrument which is set to the highest

resistance range.

C. A normal capacitor shows continuity for a short time (kick) and then a resistance of about 10MΩ

after it has been charged.

D. A short-circuited capacitor shows continuity all the time.

E. An open capacitor constantly shows a resistance about 10 MΩ because of its internal 10MΩ

resistance.

F. When the internal wire is opened in the high voltage capacitor shows an infinite resistance.

G. The resistance across all the terminals and the chassis must be infinite when the capacitor is

normal.

If incorrect reading are obtained, the high voltage capacitor must be replaced.

CARRY OUT 4R CHECKS.

SWITCH TEST

CARRY OUT 3D CHECK.

Isolate the switch to be tested and using an ohmmeter check between the terminals as described

in the following table.

Table: Terminal Connection of Switch

COM; Common terminal

NO; Normally open terminal

NC; Normally close terminal

S.C.; Short circuit

Plunger Operation

COM to NO

O.C.

COM to NC

Released

S.C.

O.C.

Depressed

S.C.

O.C.; Open circuit

If incorrect readings are obtained, make the necessary switch adjustment or replace the switch.

CARRY OUT 4R CHECKS.

WEAK POINT A018

CARRY OUT 3D CHECKS.

IftheweakpointA018isblown, therecouldbeashortintheasymmetricrectifierorthereisaground

in wire harness. A short in the asymmetric rectifier may have occured due to short or ground in H.V.

rectifier, magnetron, high voltage transformer or H.V. wire. Check them and replace the defective

parts or repair the wire harness.

CARRY OUT 4R CHECKS.

CAUTION: Only replace weak point A018 with the correct value replacement.

R-2397

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

WEAK POINT A017

CARRY OUT 3D CHECKS.

IftheweakpointA017isblown,therecouldbeashortsorgroundsinelectricalpartsorwireharness.

Check them and replace the defective parts or repair the wire harness.

CARRY OUT 4R CHECKS.

CAUTION: Only replace weak point A017 with the correct value replacement.

FUSE F6.3A TEST

CARRY OUT 3D CHECKS.

If the fuse F6.3A is blown when the door is opened, check the latch switch, monitor switch and

monitor resistor.

If the fuse F6.3 is blown by incorrect door switching replace the defective switch(s) and the fuse

F6.3A.

CARRY OUT 4R CHECKS.

CAUTION: Only replace fuse with the correct value replacement.

THERMAL CUT-OUT TEST

CARRY OUT 3D CHECKS.

Disconnect the leads from the terminals of the thermal cut-out. Then using an ohmmeter, make a

continuity test across the each two terminals as described in the table below.

CARRY OUT 4R CHECKS.

Table: Thermal Cut-out Test

Temperature of “ON”

condition (closed circuit).

(˚C)

Temperature of “OFF”

condition (open circuit).

Indication of ohmmeter

(When room temperature

Parts Name

(˚C) is

approx. 20˚C.)

Thermal cut-out 145˚C

Thermal cut-out 115˚C

This is not resetable type.

Above 145˚C

Above 115˚C

Closed circuit.

Closed circuit

If incorrect readings are obtained, replace the thermal cut-out.

An open circuit oven thermal cut-out 115˚C indicates that the oven cavity has over heated, this may

be due to no load operation.

An open circuit magnetron thermal cut-out 145˚C indicates that the magnetron has overheated, this

may be due to resistricted ventilation, cooling fan failure or a fault condition within the magnetron

or HV circuit.

An open circuit blower motor thermal cut-out 115˚C indicates the blower motor winding has

overheated, this may be due to resisted ventilation or locked cooling fan.

MONITOR RESISTOR TEST

CARRY OUT 3D CHECKS.

Disconnect the leads from the monitor resistor. Using an ohmmeter and set on a low range. Check

between the terminals of the monitor resistor.

The resistance of monitor resistor should be read approx. 4.3Ω.

If incorrect readings are obtained, replace the monitor resistor.

CARRY OUT 4R CHECKS.

R-2397

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

MAGNETRON THERMISTOR TEST

CARRY OUT 3D CHECKS.

Disconnect connector-H from the CPU unit. Measure the resistance of the thermistor with an

ohmmeter. Connect the ohmmeter leads to the leads of the thermistor.

Room Temp.

Resistance

15˚C ........................ Approx. 15.91 kΩ

20˚C ........................ Approx. 13.04 kΩ

25˚C ........................ Approx. 10.74 kΩ

If the meter does not indicate above resistance, replace the thermistor.

CARRY OUT 4R CHECKS.

EXHAUST THERMISTOR TEST

CARRY OUT 3D CHECKS.

Disconnect connector-B from the CPU unit. Measure the resistance of the thermistor with an

ohmmeter. Connect the ohmmeter leads to the leads of the thermistor.

Room Temp.

Resistance

15˚C ........................ Approx. 77.45 kΩ

20˚C ........................ Approx. 61.47 kΩ

25˚C ........................ Approx. 49.12 kΩ

If the meter does not indicate above resistance, replace the thermistor.

CARRY OUT 4R CHECKS.

INTAKE THERMISTOR TEST

CARRY OUT 3D CHECKS.

Disconnect connector-D from the CPU unit. Measure the resistance of the thermistor with an

ohmmeter. Connect the ohmmeter leads to the leads of the thermistor.

Room Temp.

Resistance

15˚C ........................ Approx. 15.88 kΩ

20˚C ........................ Approx. 13.03 kΩ

25˚C ........................ Approx. 10.74 kΩ

If the meter does not indicate above resistance, replace the thermistor.

CARRY OUT 4R CHECKS.

MOTOR WINDING TEST

CARRY OUT 3D CHECKS.

Disconnect the leads from the motor. Using an ohmmeter, check the resistance between the two

terminals.

Resistance of Blower motor should be approximately 52Ω.

Resistance of Stirrer motor should be approximately 8.8 kΩ.

If incorrect readings are obtained, replace the motor.

CARRY OUT 4R CHECKS.

NOISE FILTER TEST

CARRY OUT 3D CHECKS.

Disconnect the leads from the terminals of noise filter. Using an ohmmeter, check between the

terminals as described in the following table.

R-2397

TEST PROCEDURES

PROCEDURE

COMPONENT TEST

LETTER

WHT

L (min)

0.5mH

Cx ± 20%

0.22 µF

Cy ± 20%

4700 pF

BLK

MEASURING POINT

Between N and L

INDICATION OF OHMMETER

Open circuit

Between terminal N and WHITW

Between terminal L and BLK

Short circuit

If incorrect readings are absorbed, replace the noise filter.

CARRY OUT 4R CHECKS.

TOUCH CONTROL PANEL ASSEMBLY TEST

The touch control panel consists of circuits including semiconductors such as LSI, IC, etc.

Therefore, unlike conventional microwave ovens, proper maintenance cannot be performed with

only a voltmeter and ohmmeter. In this service manual, the touch control panel assembly is divided

into two units, Control Unit and Switch Unit, troubleshooting by unit replacement is described

according to the symptoms indicated.

1. Key Unit

The following symptoms indicate a defective key unit. Replace the key unit.

a) When touching the pads, a certain pad produces no signal at all.

b) When touching the pads, sometimes a pad produces no signal.

2. Control Unit

The following symptoms may indicate a defective control unit. Replacing the control unit.

2-1 Programming problems.

a) When touching the pads, a certain group of pads do not produce a signal.

2-2 Display problems.

a) For a certain digit, all or some segments do not light up.

b) For a certain digit, brightness is low.

c) Only one indicator does not light.

d) The corresponding segments of all digits do not light up; or they continue to light up.

e) Wrong figure appears.

f) A certain group of indicators do not light up.

g) The figure of all digits flicker.

2-3 Other possible problems caused by defective control unit.

a) Buzzer does not sound or continues to sound.

b) Cooking is not possible.

Note: When defective components, (the Control Unit or Key Unit) are replaed, the defective part

or parts must be properly packed for return in the shipping carton. with its cushion material,

in which the new replacement part was shipped to you.

KEY UNIT TEST

f the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon is

making good contact, verify that the door sensing switch (stop switch ) operates properly; that is the

contacts are closed when the door is closed and open when the door is open. If the door sensing

switch (stop switch ) is good, disconnect the flat ribbon cable that connects the key unit to the control

unit and make sure the door sensing switch is closed (either close the door or short the stop switch

connector ). Use the key unit matrix indicated on the control panel schematic and place a jumper

wire between the pins that corre-

G 1

G 4

G 3

G 2

G 5

G 7

G 8

G 6

spond to the STOP/CLEAR pad

makingmomentarycontact.Ifthe

control unit responds by clearing

with a beep, the key unit is faulty

and must be replaced. If the con-

trol unit does not respond, it is

faulty and must be replaced.

G 9

G 10

G 11

G 12

R-2397

TEST PROCEDURES (CONT'D)

COMPONENT TEST

PROCEDURE

LETTER

If a specific pad does not respond, the above method may be used (after clearing the control unit)

to determine if the control unit or key pad is at fault.

RELAY TEST

CARRY OUT 3D CHECKS.

Remove the outer case and check voltage between Pin Nos. 5 and 7 of the connector (A) on the

control unit with an A.C. voltmeter. The meter should indicate 230 volts, if not check control unit

circuity.

RY1, RY3 and RY4 Relay Test

These relays are operated by D.C. voltage.

Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation.

DC. voltage indicated ............................ Defective relay.

DC. voltage not indicated ...................... Check diode which is connected to the relay coil. If

diode is good, control unit is defective.

RELAY SYMBOL OPERATIONAL VOLTAGE

CONNECTED COMPONENTS

RY1

RY3

RY4

APPROX. 19.0V D.C.

APPROX. 16.0V D.C.

APPROX. 18.0V D.C.

Oven lamp, Blower motor and Stirrer motor

Power transformer 1

Power transformer 2

CARRY OUT 4R CHECKS.

PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING

BOARD (PWB) IS OPEN

To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary

on the PWB, this foil pattern acts as a fuse. If the foil pattern is open, follow the troubleshooting guide

given below for repair.

Problem: POWER ON, indicator does not light up.

CARRY OUT 3D CHECKS.

STEPS

OCCURANCE

CAUSE OR CORRECTION

The rated AC voltage is not present at

POWER terminal of CPU connector (CN-A).

The rated AC voltage is present at primary

side of low voltage transformer.

Check supply voltage and oven power cord.

Low voltage transformer or secondary circuit defective.

Check and repair.

Only pattern at "a" is broken.

*Insert jumper wire J24 and solder.

(CARRY OUT 3D CHECKS BEFORE REPAIR)

*Insert the coil RCILF2003YAZZ between "c" and "d".

(CARRY OUT 3D CHECKS BEFORE REPAIR)

Pattern at "a" and "b" are broken.

D81

NOTE: *At the time of these repairs, make a

visual inspection of the varistor for

burning damage and examine the

transformerwithtesterforthepresence

oflayershort-circuit(checkprimarycoil

resistance). If any abnormal condition

isdetected,replacethedefectiveparts.

(J29)

VRS1

(VRS2)

(J23)

3(1)

5(3)

9(7)

(9)

CARRY OUT 4R CHECKS.

R-2397

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

The touch control section consists of the following units as

shown in the touch control panel circuit.

This AC voltage is then half wave rectified by D61/D62

and smoothed (filtered) by C61/C62.

This AC voltage is the input to the IN3 and IN5 ports of

IC1, which determines if there is a magnetron / high

voltage problem.

(1) Control Unit

(2) Key Unit

Theprincipalfunctionsoftheseunitsandthesignalscommu-

nicated among them are explained below.

HIGH VOLTAGE TRANSFORMER

HIGH VOLTAGE CIRCUIT

MAIN BODY SIDE

1. Control Unit

Signal of key touch and oven function control are all

processed by one microcomputer.

T/C SIDE

1) Power Supply Circuit

CT1 or CT2

RY3 or RY4

This circuit changes output voltage at the secondary side

of the low voltage (T1) transformer to volatges required

at each part by full wave rectifying circuit, constant

voltage circuit, etc..

R65 or

R66

R61 or

R62

C61 or C62

IC1

IN3 or

D61 or R63 or D63 or

D62 R64 D64

IN5 PORT

2) ACL Circuit

This is an Auto-clear Circuit, i.e., a reset circuit, which

enables IC1 to be activated from initial state.

Figure T-1. High Voltage Monitoring Circuit

3) Power SYNC Signal Generating Circuit

This is a circuit for generating power SYNC signal by

virtue of the secondary side output of transformer T1.

This signal is used for a basic frequency to time process-

ing and so on.

14) Magnetron Temperature Circuit.

(Detect Noload or Fan Lock)

Thisisacircuitfortransmittingoutputchangeofthermistor

(Magnetron Temperature Sensor) to IC1.

4) Clock Circuit

15) Intake Air Temperature Detecting Circuit.

Thisisacircuitfortransmittingoutputchangeofthermistor

(Intake Air Sensor) to IC1.

This is a circuit for controlling clock frequency required

for operating IC1.

5) IC1 (Main Processor)

This is a one-chip microcomputer, responsible for con-

trolling the entire control unit.

2. Key Unit

Thekeyunitiscomposedofamatrixcircuitinwhichwhen

a key it touched, one of signals P11, P12, P15, P16 and

P17 generated by the LSI, is passed through the key and

returned to the LSI as one of signals R0--R3. This model

has20Memorypads. Whentheovenisshipped, Memory

pad 1 to 10 are set as follows: fig.1.

6) IC2 (Memory Processor)

This is a memory IC, responsible for memory function.

7) Display Circuit

This is a circuit for driving display tubes by IC1 output.

8) Key Input Circuit

This is a circuit for transmitting key input information to

IC1.

Memory No.

Cook Time

5sec.

Output Power

100%

10sec.

100%

9) Sound-body Driving Circuit

20sec.

100%

This is a circuit for driving sound body by IC1 output.

30sec.

40sec.

50sec.

1min.

100%

10) Relay Driving Circuit

This is a circuit for driving output relay by IC1 output.

11) Stop Switch Circuit

This is a circuit for driving IC1 to detect door opening/

closing.

1min.15sec.

1min.30sec.

2min.

12) Exhaust Air Temperature Detecting Circuit

Thisisacircuitfortransmittingoutputchangeofthermistor

(Exhaust Air Temperature Sensor) to IC1.

(fig. 1)

13) High Voltage Monitoring Circuit.

This model has a double quantity pad. When the oven

is shipped, Magnification "1.8" is preset in the double

quantity pad. This model has an defrost pad. When the

oven is shipped, defrost is set as follows: fig.2.

This circuit detects problems in the magnetron / high

voltage circuit by sensing a variation in the current

flowing through the primary winding of the high voltage

transformer.

During heating, the primary current of the high voltage

transformers also flows through the primary winding of

the current transformers CT1 and CT2. This causes a

current to be induced in the secondary windings of CT1/

CT2 and results in an AC voltage which is determined by

R61/R62.

1 STAGE

POWER

OVEN ON/OFF

10%

(fig. 2)

R-2397

DESCRIPTION OF LSI

LSI(IZA646DR)

The I/O signal of the LSI(IZA646DR) is detailed in the following table.

Pin No.

Signal

I/O

Description

Reference voltage input terminal.

VREF

A reference voltage applied to the A/D converter in the LSI. Connected to GND.(0V)

IN7

IN6

Temperature measurement input: MAGNETRON THERMISTOR.

ByinputtingDCvoltagecorrespondingtothetemperaturedetectedbythethermistor, this

input is converted into temperature by the A/D converter built into the LSI.

Temperature measurement input: EXHAUST THERMISTOR.

ByinputtingDCvoltagecorrespondingtothetemperaturedetectedbythethermistor, this

input is converted into temperature by the A/D converter built into the LSI.

IN5

IN4

A/D input for troubleshooting Magnetron 1.

Terminal to change functions according to the model.

Signal in accordance with the model in operation is applied to set up its function.

IN3

IN2

IN1

IN0

A/D input for troubleshooting Magnetron 2.

Connected to GND.(0V)

Terminal not used.

Temperature measurement input: INTAKE THERMISTOR.

ByinputtingDCvoltagecorrespondingtothetemperaturedetectedbythethermistor, this

input is converted into temperature by the A/D converter built into the LSI.

P47

P46

OUT

Terminal not used.

Memory (EEPROM) clock output.

P45

IN/OUT Memory (EEPROM) data input/output.

13-14

P44-P43

OUT

Magnetron high-voltage circuit driving signal.

To turn on and off the cook relay. In 100% power level operation, "L" level during cooking;

"H" level otherwise. In other power level operation (90,80,70,60,50,40,30,20,10 or 0%),

"H" and "L" level is repeated according to power level.

Power level

100%

90%

OFF

Power level

OFF

GND

48sec. 0sec.

44sec. 4sec.

40sec. 8sec.

36sec. 12sec.

32sec. 16sec.

26sec. 22sec.

40%

22sec. 26sec.

16sec. 32sec.

12sec. 36sec.

8sec. 40sec.

0sec. 48sec.

30%

80%

20%

-5V

48 sec.

70%

10%

60%

50%

P42

OUT

Power supply output at thermistor detecting circuit.

(Output-5Vincookingonly,butapplyhighimpedancetootherstopreventthermistorfrom

electrolytic corrosion ocurrence.)

P41

P40

OUT

Terminal not used.

Oven lamp, Blower motor and Stirrer motor driving signal. (Square Waveform :

50Hz)

During cooking

To turn on and off the shut-off relay (RY1). The

Square waveform voltage is delivered to the

RY1

relay

driving

circuit

and

20 msec

relays(RY3,RY4,COOKRELAY)controlcircuit.

18-22

P37-P33

P32

OUT

Terminal not used.

0.12 sec

Signal to sound buzzer.

This signal is to control the 2.5kHz continuous

signal.

GND

-5V

2.4 sec

1.2 sec

A: key touch sound.

B: Guydance sound.

C: Completion sound.

200µsec.

P31

Signal synchronized with commercial power source frequency.

This is basic timing for all time processing of LSI.

H : GND

L (-5V)

20 msec

P30

OUT

Terminal not used.

CNVSS

Connected to Vc.(-5V)

R-2397

Pin No.

Signal

I/O

Description

RESET

Auto clear terminal.

Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set

to "L" level the moment power is supplied, at this time the LSI is reset. Thereafter set at

"H" level.

XIN

Internal clock oscillation frequency setting input.

The internal clock frequency is set by inserting the ceramic filter oscillation circuit with

respect to XOUT terminal.

XOUT

OUT

Internal clock oscillation frequency control output.

Output to control oscillation input of XIN.

30/31 XCIN/XCOUTIN/OUT Terminal not used.

VSS

Power source voltage: -5V.

VC voltage of power source circuit input.

OUT

Terminal not used.

Signal coming from touch key.

When either one of G-12 line keys on key matrix is touched, a corresponding signal out

of P11, P12, P14-P17 will be input into R3. When no key is touched, the signal is held at

"L" level.

Signal similar to R3.

When either one of G-11 line keys on key matrix is touched, a corresponding signal will

be input into R2.

Signal similar to R3.

When either one of G-10 line keys on key matrix is touched, a corresponding signal will

be input into R1.

Signal similar to R3.

When either one of G-9 line keys on key matrix is touched, a corresponding signal will

be input into R0.

Anode (segment) of Fluorescent Display light-up voltage: -31V

Vp voltage of power source circuit input.

P17

OUT

Segment data signal.

The relation between signals and indicators are as follows:

Signal

Segment

Signal

Segment

P24 .................. i

P23 ................j,k

P17 ............... LB

P16 .............. UB

P15 ................. h

P14 ................. g

P13 ..................... f

P12 .................... e

P11 .................... d

P10 .................... c

P07 .................... b

P06 .................... a

ß(50Hz)

GND

-31(V)

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R0-R3 terminal while one

of G-6 line keys on key matrix is touched.

P16

P15

OUT

Segment data signal. Signal similar to P17.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R0-R3 terminal while one

of G-5 line keys on key matrix is touched.

Segment data signal. Signal similar to P17.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R0-R3 terminal while one

of G-4 line keys on key matrix is touched.

42-43

P14-P13

P12

OUT

Segment data signal.

Signal similar to P17.

Segment data signal. Signal similar to P17.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R0-R3 terminal while one

of G-8 line keys on key matrix is touched.

P11

OUT

Segment data signal. Signal similar to P17.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to R0-R3 terminal while one

of G-7 line keys on key matrix is touched.

R-2397

Pin No.

Signal

I/O

Description

P10

OUT

Segment data signal.

Signal similar to P17.

47-48

P07-P06

P05

OUT

Segment data signal.

Signal similar to P17.

Digit selection signal.

The relation between digit signal and digit are as

follows:

Digit signal Digit

ß(50Hz)

P05

GND

-31(V)

P05

P04

P03

P02

P01

P00

1st.

2nd.

3rd.

4th.

5th.

6th.

P04

P03

P02

P01

P00

Normally, one pulse is output in every ß period,

and input to the grid of the Fluorescent Display.

GND

-31(V)

50-54

P04-P00

OUT

Digit selection signal.

Signal similar to P16.

55-57

58-59

P27-P25

P24-P23

OUT

Terminal not used.

Segment data signal.

Signal similar to P17.

P22

OUT

(Sound) Voltage level control terminal.

This terminal (P22) is to control volume level of buzzer sound with terminals P21. Since

the volume level of buzzer sound depends on voltage energized, it is control level in 3

steps by combining signal levels for P22,P21. Relationship of signal level combination to

soundvolumelevelisshowninthefollowingtable, 1~3inthetable, however, areindicated

in the descending order from the maximum level of sound volume through the minimum

level.

Sound Volume

1,(Max.)

P21

P22

A : 1,(Max) 20V

2, 13V

3,(Min) 7V

3,(Min.)

*At Output terminal P32, rectangular wave signal of 2.5kHz is output.

P21

P20

OUT

Sound level control signal.

Refer to above signal P22.

Input signal which communicates the door open/close information to LSI.

Door closed; "H" level signal(0V).

Door opened; "L" level signal(-31.0V).

63/64

AVCC/VCC

Connected to GND.

2-2 Memory IC (IC2)

AT24C04 is a 4K-bit, serial memory, enabling CMOS to be erased/written electrically. This memory is constructed with 512

registers x 8bits, enabling individual access, read and write operations to be performed. Details of input/output signal for IC2

are as shown in the following diagram.

FUNCTIONAL DIAGRAM

(3) Vcc

H.V. GENERATION

TIMING

& CONTROL

(4) Vss

START CYCLE

(5) SDA

START

STOP

LOGIC

TOP VIEW

CONTROL

LOGIC

PROM

SLAVE ADDRESS

512 x 8

XDEC

VCC

TEST

SCL

(6) SCL

COMPARATOR

INC

LOAD

WORD

ADDRESS

COUNTER

R/W

YDEC

Dout

DATA REGISTER

SDA

Dout

ACK

VSS

Figure T-4 Relation between Pin Nos, and Signals

R-2397

Pin No.

1-3

Signal

A0-A2

VSS

I/O

Description

Connected to GND.

Connected to VC(-5V).

SDA

SCL

TEST

VCC

IN/OUT

Serial data input/output : input/outputs data to IC1.

Clock signal input : input/outputs sireal data at every one pulse.

Connected to VC(-5V).

Connected to GND.

SERVICING

1. Precautions for Handling Electronic Components

This unit uses CMOS LSI in the integral part of the

circuits. When handling these parts, the following pre-

cautions should be strictly followed. CMOS LSI have

extremely high impedance at its input and output termi-

nals. For this reason, it is easily influenced by the

surrounding high voltage power source, static electricity

charge in clothes, etc, and sometimes it is not fully

protected by the built-in protection circuit.

repair all the controls (sensor-related ones included) of

the touch control panel while keeping it connected to the

oven.

B. On some models, the power supply cord between the

touch control panel and the oven proper is long enough

that they may be separated from each other. For those

models, therefore, it is possible to check and repair the

controls of the touch control panel while keeping it apart

from the oven proper; in this case you must short both

ends of the door sensing switch (on PWB) of the touch

control panel with a jumper, which brings about an

operational state that is equivalent to the oven door

being closed. As for the sensor-related controls of the

touch control panel, checking them is possible if dummy

resistor(s) with resistance equal to that of the controls

are used.

In order to protect CMOS LSI.

1) When storing and transporting, thoroughly wrap them in

aluminiumfoil. AlsowrapallPWboardscontainingthem

in aluminium foil.

2) When soldering, ground the technician as shown in the

figure and use grounded soldering iron and work table.

(2)Servicing the touch control panel with power supply from

an external power source:

approx. 1M ohm

Disconnect the touch control panel completely from the

oven proper, and short both ends of the door sensing

switch (on PWB) of the touch control panel, which brings

about an operational state that is equivalent to the oven

door being closed. Connect an external power source to

the power input terminal of the touch control panel, then

it is possible to check and repair the controls of the touch

control panel it is also possible to check the sensor-

related controls of the touch control panel by using the

dummy resistor(s).

2. Shapes of Electronic Components

Transistor

2SA1561

2SB1238

Transistor

DTA114YS

DTB143ES

DTD143ES

KRA101M

Transistor

2SB953

4. Servicing Tools

3. Servicing of Touch Control Panel

Tools required to service the touch control panel assem-

bly.

1) Soldering iron: 30W

(It is recommended to use a soldering iron with a

grounding terminal.)

2) Oscilloscope:Singlebeam,frequencyrange:DC-10MHz

type or more advanced model.

3) Others: Hand tools

We describe the procedures to permit servicing of the

touch control panel of the microwave oven and the

precautions you must take when doing so. To perform

the servicing, power to the touch control panel is avail-

able either from the power line of the oven itself or from

an external power source.

(1) Servicingthetouchcontrolpanelwithpowersupply

of the oven:

CAUTION: THEHIGHVOLTAGETRANSFORMEROF

THE MICROWAVE OVEN IS STILL LIVE

5. Other Precautions

1) Before turning on the power source of the control unit,

remove the aluminium foil applied for preventing static

electricity.

DURING SERVICING PRESENTS A HAZ-

ARD.

Therefore, when checking the performance of the touch

control panel, put the outer cabinet on the oven to avoid

touching the high voltage transformer, or unplug the

primary terminal (connector) of the high voltage trans-

former to turn it off; the end of such connector must be

insulated with an insulating tape. After servicing, be

sure to replace the leads to their original locations.

A. On some models, the power supply cord between the

touchcontrolpanelandtheovenitselfissoshortthatthe

two can’t be separated. For those models, check and

2) Connect the connector of the key unit to the control unit

being sure that the lead wires are not twisted.

3) After aluminium foil is removed, be careful that abnormal

voltage due to static electricity etc. is not applied to the

input or output terminals.

4) Attach connectors, electrolytic capacitors, etc. to PWB,

making sure that all connections are tight.

5) Be sure to use specified components where high preci-

sion is required.

R-2397

PROCEDURE FOR CHECKING/CLEARING

SERVICE COUNTS OF MICROWAVE OVEN

PROCEDURE FOR ENTERING TO IC-2

When the control unit or IC-2 is exchanged, re-enter the

constants of DEFROST and the memory pads 1~20, refer-

ring to items 1 and 2 below.

The following procedure enables the servicer to obtain the

total service counts (cook cycles) for memory cooking,

double quantity cooking and defrost. The maximum capacity

of the counter is 999,999 counts, above which the counter

will reset to "0". The counter will retain the total counts (will

not clear) in the event of a power disruption.

1) How to enter the contents of DEFROST

T = STG1 + STG2 + STG3

STG = A x T + B

1 stage 10% power level

" : Flicker / : 0.1 sec BUZZER

1) Practice for checking total service counts

(eg; 234,567 Counts).

PAD ORDER

(Door close)

SET

DISPLAY

PHONE

• • •

0.1sec BUZZER

flashing

DISPLAY

INDICATOR LED

PAD

PHONE

SET

"NUMBER"

•

(Door close)

(within 2 sec.)

#1 START

DEFROST

9,9

•

CHECK

NUMBER

CHECK

•

"NUMBER"

82 68

0.00 DEF

0.99 DEF

(A)

( user total count )

x 2

VOLUME

SELECTATIME

0 DEF

90 DEF

(+ - B)

DEF

VOLUME

DOUBLE

QUANTITY

2 34 56 7

( service total count )

"POWER"

100%

NUMBER

SELECTAPOWER

( after 1 sec. )

DEF

"POWER"

10%

( filter used time )

SELECTATIME

0.00 DEF

(A)

NUMBER

( after 1 sec. )

2 00

SELECTATIME

0 DEF

(+ - B)

0 DEF

A DEF

. DEF

( filter lim. time )

0 (No 10)

NUMBER

SELECTATIME

START

SET

( after 1 sec. )

35 43 2

( service total cook time )

CHECK

•

SET

#1: Denotes total service counts within the reach of user, of

which checking and clearing practices are described in

#1 : No key entry signal.

#2 : To set-B, touch the selectapower key twice.

this instruction manual.

#2: Denotes the procedure for the servicer to disable check-

ing/clearing. This procedure is instructed to service per-

sonnel only and is excluded from the operation manual.

2) How to enter the memory information

Example : Suppose cooking time 5 sec. and output power

100% are entered into the memory pad 1.

2) Practice for clearing Service's counts

" : Flicker / : 0.1 sec BUZZER

PAD ORDER

DISPLAY

PHONE

PAD ORDER

(Door close)

CHECK

DISPLAY

PHONE

(Door close)

SET

"NUMBER"

CHECK

SET

"NUMBER"

CHECK

82 68

"CHECK"

(within 2 sec.)

(User's Total Counts)

82 68

NUMBER 1

"NUMBER"

. 0

. 5

#1 VOLUME

VOLUME

DOUBLE

QUANTITY

SET

"CHECK"

82 68

SET

2 34 56 7

(Total Counts of Service)

"CHECK"

Enter the memory information into the memory pads 1 ~10

referring to above example. The memory information are

given below.

"CHECK"

SET

CHECK

#1: Denotes the procedure for the servicer to disable clear-

ing. Thisprocedureisinstructedtoservicepersonnelonly

and is excluded from the operation manual.

R-2397

Memory No.

Cook Time

5 sec.

Output Power

100%

10 sec.

100%

20 sec.

100%

30 sec.

100%

40 sec.

100%

50 sec.

100%

1 min.

100%

1 min. 15 sec.

1 min. 30 sec.

2 min.

100%

11-20

100%

0 sec.

Enter the memory information of magnification of double into

the memory pads 1 ~ 20 (all 1.80).

Ex, To set memory 1

PAD ORDER

SET

DISPLAY

PHONE

SET

"NUMBER"

NUMBER 1

"NUMBER"

DOUBLE

0.00

1,8,0

1.80

x 3

SET

OTHER CHECKING AND CLEARING PRO-

CEDURE

1) To check the contents of defrost.

" : Flicker / : 0.1 sec BUZZER

PAD ORDER

(Door close)

CHECK

DISPLAY

PHONE

"NUMBER"

CHECK

DEFROST

0.99 DEF

(A)

DEF

CHECK

POWER

(+ - B)

0.00 DEF

(A)

CHECK

DEF

CHECK

POWER

100%

(+ - B)

DEF

CHECK

POWER

100%

(Repeat)

CHECK

#1 : No key entry signal.

2) How to clear all counter(user and service) and total

cooking time and used time of filter.

PAD ORDER

(Door close)

SET

DISPLAY

PHONE

SET

"NUMBER"

DOUBLE

CHECK

VOLUME

SET

DOUBLE

R-2397

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below

before operating the oven.

1. CARRY OUT 3D CHECKS.

1. Door does not close firmly.

2. Makesurethatadefinite”click”canbeheardwhenthe

microwave oven door is unlatched. (Hold the door in

a closed position, then pull the door release lever with

one hand, this causes the latch leads to rise, it is then

possible to hear a “click’ as the door switches oper-

ate.)

2. Door hinge, support or latch hook is damaged.

3. The door gasket or seal or damaged.

4. The door is bent or warped.

5. There are defective parts in the door interlock system.

6. Therearedefective partsinthemicrowavegenerating

and transmission assembly.

3. Visually check the door and cavity face plate for

damage (dents, cracks, signs of arcing etc.).

7. There is visible damage to the oven.

Do not operate the oven:

Carry out any remedial work that is necessary before

operating the oven.

Do not operate the oven if any of the following conditions

exist;

1. Without the RF gasket (Magnetron).

2. If the wave guide or oven cavity are not intact.

3. If the door is not closed.

4. If the outer case (cabinet) is not fitted.

Please refer to ‘OVEN PARTS, CABINET PARTS, DOOR PARTS’, when carrying out any of the following removal

procedures:

OUTER CASE REMOVAL

To remove the outer case, proceed as follows.

CAUTION:DISCHARGEHIGHVOLTAGECAPACI-

1. Disconnect oven from power supply.

TOR BEFORE TOUCHING ANY OVEN

2. Open the oven door and wedge it open.

COMPONENTS OR WIRING.

3. Remove the two (2) screws from the lower portion of the

rear cabinet and lower left portion of the oven cabinet

back side using by special screw drive (Type; LHSTIX

DLR4-100T).

4. Remove the screws from rear and along the side edge

of case.

5. Slide the entire case back about 3cm to free it from

retaining clips on the cavity face plate.

6. Lift the entire case from the oven.

7. Remove the screws holding the rear cabinet to the oven.

8. Remove the rear cabinet.

Special screw

9. Discharge the HV capacitor before carrying out any

further work.

10.Do not operate the oven with the outer case removed.

N.B.; Step 1,2 and 9 form the basis of the 3D checks.

Screw Driver

(Type; LHSTIX DLR4-100T)

HIGH VOLTAGE COMPONENTS REMOVAL

(High Voltage Capacitor and High Voltage Rectifier Assembly)

To remove the components, proceed as follows.

1. CARRY OUT 3D CHECKS.

CAUTION

1. DO NOT REPLACE ONLY HIGH VOLTAGE REC-

TIFIER. WHEN REPLACE IT, REPLACE HIGH

VOLTAGE RECTIFIER ASSEMBLY.

2. WHENREPLACINGHIGHVOLTAGERECTIFIER

ASSEMBLY, ENSURE THAT THE CATHODE

(EARTH) CONNECTION IS SECURELY FIXED

TO THE CHASSIS WITH A EARTHING SCREW.

2. Removetwo(2)screwsholdingearthsideterminalsof

high voltage rectifier assemblies.

3. Disconnect all the leads and terminals of high voltage

rectifier assembly from high voltage capacitor.

4. Removetwo(2)screwsholdingcapacitorholdertothe

right side of oven cavity and remove the capacitor

holder.

6. Now, the two (2) high voltage capacitors are free.

5. Now, high voltage rectifier assembly should be free.

R-2397

MAGNETRON REMOVAL

1. Remove the outer case cabinet referring to "OUTER

CASE REMOVAL" and CARRY OUT 3D CHECKS.

2. Remove the eleven (11) screws holding the rear

cabinet to the oven cavity.

8. Carefully remove each four (4) screws holding each

two (2) magnetrons to waveguide. When removing

the screws hold the magnetron to prevent it from

falling.

3. Disconnectthepowersupplycordfromthenoisefilter.

4. Removetheone(1)screwholdingtheearthwireofthe

power supply cord to the noise filter angle.

5. Remove the rear cabinet with the power supply cord

from the oven cavity.

6. Remove the two (2) screws holding the magnetron

exhaust duct to upper and lower waveguide.

7. Disconnect all the wire leads from the two (2)

magnetrons.

9. Removethemagnetronfromthewaveguidewithcare

so the magnetron antenna is not hit by any metal

object around the antenna.

10.Now, the magnetron is free.

CAUTION: WHEN REPLACE THE MAGNETRON,

BESURETHER.F.GASKETISINPLACE

AND THE MAGNETRON MOUNTING

SCREWS TIGHTENED SECURELY.

HIGH VOLTAGE TRANSFORMER REMOVAL

1. Remove the outer case cabinet referring to "OUTER

CASE REMOVAL" and CARRY OUT 3D CHECKS.

2. Disconnect the all wire leads from the magnetron(s).

3. Remove the wire holder holding the high voltage

wires.

4. Disconnect all wire leads from the high voltage

transformer(s).

5. Remove the each two (2) screws holding each high

voltage transformer.

6. Now, high voltage transformer(s) is (are) free.

BLOWER MOTOR REMOVAL

4. Remove the one (1) screw holding the blower motor to

1. CARRY OUT 3D CHECKS.

2. Disconnect the wire leads from the blower motor and

the blower motor thermal cut-out.

3. Remove the one (1) screw holding the blower motor to

the oven cavity.

the chassis support.

5. Remove the blower motor. Now, the blower motor is

free.

STIRRER MOTOR (UPPER) REMOVAL

3. Remove the one (1) screw holding the stirrer motor

(upper) to the oven cavity.

4. Turn and lift up the stirrer motor (upper).

5. Now, the stirrer motor (upper) is free.

1. Remove the outer case cabinet referring to "OUTER

CASE REMOVAL" and CARRY OUT 3D CHECKS.

2. Disconnect the wire leads from the stirrer motor (up-

per).

STIRRER MOTOR (LOWER) REMOVAL

1. Disconnect oven from the power supply.

2. Remove the stirrer motor cover by snipping off the

material in four portions.

3. Where the portions have been snipped off bend the

portions flat. No sharp edge must be evident after

removal of the stirrer cover.

5. Remove one (1) screw holding the stirrer motor to

oven cavity.

6. Now, the stirrer motor (lower) is free.

7. Afterreplacementusetheone(1)screwtofitthestirrer

motor cover. (This screw has been fitted to the base

plate near the stirrer motor cover beforehand.)

4. Disconnect wire leads from the stirrer motor. (See

"Positive lock connector removal")

OVEN LAMP SOCKET REMOVAL

Oven lamp

socket

Terminal

1. CARRY OUT 3D CHECKS.

2. Remove the oven lamp.

Wire lead

3. Pull the wire leads from the oven lamp socket by

pushing the terminal hole of the oven lamp socket with

the flat type small screw driver.

Flat type small

screw driver

4. Lift up the oven lamp socket.

5. Now, the oven lamp socket is free.

Terminal hole

Figure C-1. Oven lamp socket

R-2397

CONTROL PANEL ASSEMBLY AND CONTROL UNIT REMOVAL

Replacement of individual component is as follows:

CONTROL PANEL ASSEMBLY REMOVAL

The complete control panel should be removed for re-

placement of components. To remove the control panel,

proceed as follows:

CONTROL UNIT AND CONTROL PANEL FRAME

(WITH KEY)

7. Remove two (2) screws holding the control panel

1. CARRY OUT 3D CHECKS.

2. Remove the air intake filter assembly from the base

plate.

3. Remove two (2) screws holding the control panel to

the base plate.

4. Pull down the control panel and remove it forward.

5. Disconnect two connectors (A), (B), (D), (H) and TAB

terminal (TAB1,2,3,4) from the control unit.

6. Now the control panel assembly is free.

mounting angle to the panel frame.

8. Liftupthecontrolpanelmountinganglefromthepanel

frame.

9. Disconnect connector (G) from the control unit by

pushing the hooks of cable holder inwardly.

10.Remove four (4) screws holding the control unit to the

panel frame assembly.

11.Push down the right side two (2) hooks fixing the

controlunittothepanelframeassembly, andliftupthe

control unit upward.

CAUTION FOR TOUCH CONTROL PANEL REMOVAL

1) Hold the lower end (Position A, Fig. 1) of the touch

control panel assembly firmly while sliding it down and

toward you.

12.Now, the control unit and control panel frame (with

key) are free.

CAUTION:

DO NOT FORCE THE CONTROL UNIT TO SLIDE

DOWN DURING REMOVAL. THIS MAY CAUSE DAM-

AGE TO THE CONTROL UNIT BY HITTING A RELAY

(RY-4) OR THE TAB TERMINALS LOCATED AT THE

FRONT OF THE OVEN CAVITY.

At installing control panel unit assembly to main

body set:

1. Ensuretheinstallationofwiring-relatedpartswith-

out negligence.

2. Wheninsertingkeycabletomainbodyset, ensure

themfreefromcaught-introuble.Inaddition,when

installingthecontrolpanelassemblytobaseplate

with screws, be sure of pushing the control panel

unit upward to fix with screws firmly.

3. Do not allow any wire leads to come near the

varistor works, because it will explode and the

wire leads near by the varistor will be damaged.

2) If the Touch Control Panel is hard to remove;

(1) Insert a flat head screw driver into space B . (Fig. 1)

(2) Rotate the screwdriver clockwise while holding posi-

tion C of the Touch Control Panel. (Fig. 2)

TO AVOID DAMAGE TO TOUCH CONTROL PANEL,

COVER THE TIP OF SCREWDRIVER WITH TAPE.

(3) Re-solder the Relay (RY-4) prior to reinstalling the

Touch Control Panel.

NOTE: 1. Before attaching a new key unit, remove

remainingadhesiveonthecontrolpanelframe

surfaces completely with alcohol.

Fig. 2

Fig. 1

2. When attaching the key unit to the control

panel frame, adjust the upper edge and right

edge of the key unit to the correct position of

control panel frame.

3. Stick the key unit firmly to the control panel

frame by rubbing with soft cloth not to scratch.

TOUCH CONTROL PANEL

SCREW DRIVER

HOW TO RELEASE THE POSITIVE LOCK^®CONNECTOR.

Terminal

Procedure

1. Pushing the lever of positive lock^®connector.

2. Pull down the connector from the terminal.

3. Now, the connector is free.

Positive lock®

connector

Note: If the positive lock^®has a insulation sleeve, first

remove it. If you do not so, you can not push the

lever of positive lock^®.

Push

Lever

CAUTION: The positive lock^®terminal can not be dis-

connected by only pulling. Because once

you (Service personnel) have connected the

positive lock^®connector to the terminal, the

positive lock^®connector has been locked.

Pull down

Figure C-2. How to release the positive lock connector.

R-2397

POWER SUPPLY CORD REPLACEMENT

1. CARRY OUT 3D CHECKS

4. Re-install the cord bushing to the rear cabinet.

5. Re-install the rear cabinet to oven cavity and the

bottom plate with the eleven (11) screws and two (2)

washers.

2. Release the cord bushing from the rear cabinet.

3. Disconnect the brown and blue wires of the power

supply cord from the noise filter.

4. Loosen the single (1) screw holding the earth angle

and earth wire of power supply cord.

6. CARRY OUT 4R CHECKS.

5. Remove the power supply cord.

Noise filter unit

BLK

CAUTION: DO NOT ALLOW THE WIRE LEADS OF

THE POWER SUPPLY CORD TO COME

NEAR THE HIGH VOLTAGE TRANS-

FORMER. BECAUSE THE HIGH VOLT-

AGE TRANSFORMER BECOMES HOT.

WHT

Blue wire

Brown wire

Power

supply

cord

Re-install

Screw

1. Insert the power supply cord into the cord bushing.

2. Connect the brown and blue wires of power supply

cord into the terminals of noise filter, referring to

pictorial diagram.

3. Insert the green/yellow wire of power supply cord

into the earth angle, and tight the screw holding the

earth angle.

Cord

bushing

Rear

cabinet

Green/Yellow

wire

Figure C-3. Power supply cord replacement

1ST LATCH, 2ND LATCH, 3RD LATCH, MONITOR, AND STOP SWITCHES REMOVAL

1. CARRY OUT 3D CHECKS.

latch hook.

2. Remove the control panel from the oven cavity refer-

ring to “CONTROL PANEL REMOVAL”.

3. Remove the two (2) screws holding the latch hook to

the oven cavity.

4. Open the door and pull the latch hook out of the oven

cavity.

5. For 1st latch, 2nd latch or Monitor switch removal

5-1. Disconnect the wire leads from the switch.

5-2. Push the retaining tabs outward slightly and then

pull the switch forwards and remove it from the

6. For 1st latch and stop switches removal

6-1. Disconnect the wire leads from the 1st latch and

stop switches.

6-2. Remove the single (1) screw and nut holding the

1st latch and stop switches to the latch hook.

CAUTION: WHEN THE 1ST LATCH SWITCH AND

2ND. LATCH SWITCH ARE INSTALLED,

THE TWO (2) TABS OF THE LATCH

HOOK SHOULD BE BROKEN.

1ST, 2ND, 3RD LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH ADJUSTMENT

In case 1st latch switch, 2nd latch, stop switch, 3rd latch

switch and monitor switch do not operate properly due to a

mis-adjustment, the following adjustment should be made.

1. Loosen the two (2) screws holding the latch hook.

2. With the door closed, adjust the latch hook by moving it

back and forward, or up and down. In and out play of the

door allowed by the latch hook should be less than

0.5mm. The vertical position of the latch hook should be

placed where the stop switch and 1st, 2nd, 3rd latch

switches have activated with the door closed.

The horizontal position of the latch hook should be

placed where the monitor switch has activated with the

door closed.

circuit when the door is opened.

2. Re-install outer case and check for microwave leakage

around the door with an approved microwave survey

Door release

Latch head

lever

Monitor switch

Latch hook

3. Secure the screws with washers firmly.

4. Make sure of the 1st, 2nd, 3rd latch switches, stop

switch, and monitor switch operation. If those switches

have not activated with the door closed, loose two (2)

screws holding latch hook and adjust the latch hook

position.

2nd. latch switch

1st. latch switch

Joint lever

Latch lever

Stop switch

After adjustment, make sure of the following:

Latch head

1. Thestopswitchand1st, 2nd, 3rdlatchswitchesinterrupt

the circuit before the door open when the door release

lever is pulled, and then and monitor switch close the

3rd. latch switch

meter. (Refer to Microwave Measurement Procedure.)

Figure C-4 Latch Switch Adjustments

R-2397

DOOR REPLACEMENT AND ADJUSTMENT

DOOR REPLACEMENT

1. CARRY OUT 3D CHECKS.

2. Remove four (4) screws holding the upper and lower

oven hinge to the oven cavity.

FLATE TYPE

SCREW DRIVER

3. Remove door assembly with upper and lower oven

hinges by pulling it forward.

4. On re-installing new door assembly, secure the upper

and lower oven hinges with the four (4) mounting

screws to the oven cavity. Make sure the door is

parallel with bottom line of the oven face plate and the

latch head pass through the latch holes correctly.

5. CARRY OUT 4R CHECKS.

PROTECTION

BY TAPE

Note: After any service to the door, the approved

microwavesurveymetershouldbeusedtoassure

in compliance with proper microwave radiation

standards. (Refer to Microwave Measurement

Procedure.)

LOWER

OVEN HING

CHOKE

COVER

DOOR

PANEL

UPPER

OVEN HING

DOOR ADJUSTMENT

When removing and/or loosening hinges such as in door

replacement, the following adjustment criteria are taken.

Door is adjusted to meet the following three conditions by

keeping screws of hinge loose.

Figure C-6. Choke Cover Removal

DOOR COMPONENTS REMOVAL

Remove the door assembly, referring to from item 1

1. Adjust door latch heads at a position where they

smoothly catch the latch hook through the latch holes.

Refer to latch switch adjustments.

2. Deviation of the door alignment from horizontal line of

cavity face plate is to be less than 1.0mm.

3. The door is positioned with its face depressed toward

the cavity face plate.

4. Reinstalloutercaseandcheckformicrowaveleakage

around the door with an approved microwave survey

meter. (Refer to Microwave Measurement Proce-

dure.)

through item 3 of “DOOR REPLACEMENT”.

1. Place the door assembly on a soft cloth with facing up.

(UPPER AND LOWER OVEN HINGE REMOVAL)

2. Removethechokecover,referringto“CHOKECOVER

REMOVAL”.

3. Release the oven hinges from the door panel.

4. Now, the oven hinges are free.

(DOOR HANDLE REMOVAL)

5. Remove the two (2) screws holding the door handle to

door.

6. Remove the door handle from the door panel.

(UPPER AND LOWER LATCH HEADS REMOVAL)

7. Remove the door release lever from the door assem-

bly.

8. Remove the three (3) screws holding the joint plate to

the door panel.

UPPER

OVEN

HINGE

OUTER CASE

CABINET

DOOR

ASSEMBLY

9. Release the latch spring from the tab of the joint lever

and joint plate.

10.Releasethelatchheadsfromjointleverandjointplate.

11.Now, the latch heads are free.

LOWER

OVEN

HINGE

(DOOR FRAME REMOVAL)

12.Set the four (4) tabs of the door frame upright.

13.Remove the door frame from the door panel. Now,

door frame is free.

LATCH HEADS

Figure C-5. Door Assembly Replacement and Adjustment

CHOKE COVER REMOVAL

(DOOR GLASS REMOVAL)

14.Removethefour(4)screwsholdingthetwo(2)outside

window fixing plates to the door panel.

15.Now, the door glass is free.

1. Insert an iron plate (thickness of about 0.5mm or flat

type screw driver to the gap between the choke cover

and door panel as shown figure to free the engaging

part. The protect sheet may be used not to damage

the door panel.

2. Lift up the choke cover, now cove is free.

R-2397

SERVICE INFORMATION

IMPORTANT: When replace the magnetron MG1 and/or MG2, the relays RY3 and RY4 on control unit must be

replacedatthesametime.Becauseifthemagnetron'slifehasbeenover,therelay'slifemayalso

be over.

MICROWAVE MEASUREMENT

Recommended instruments are:

NARDA 8100

NARDA 8200

HOLADAY HI 1500

SIMPSON 380M

After adjustment of door latch switches, monitor switch

and door are completed individually or collectively, the

following leakage test must be performed with a survey

instrument and it must be confirmed that the result meets

the requirements of the performance standard for micro-

wave oven.

2. Place the oven tray into the oven cavity.

3. Place the load of 275 ± 15ml of water initially at 20

± 5˚C in the centre of the oven tray. The water

container should be a low form of 600 ml beaker

with inside diameter of approx. 8.5cm and made of

an electrically non-conductive material such as glass

or plastic.

REQUIREMENT

The safety switch must prevent microwave radiation

emission in excess of 5mW/cm2 at any point 5cm or more

from external surface of the oven.

The placing of this standard load in the oven is impor-

tant not only to protect the oven, but also to insure that

any leakage is measured accurately.

4. Close the door and turn the oven ON with the timer set

for several minutes. If the water begins to boil before

the survey is completed, replace it with 275ml of cool

water.

5. Move the probe slowly (not faster that 2.5cm/sec.)

along the gap.

6. The microwave radiation emission should be meas-

ured at any point of 5cm or more from the external

surface of the oven.

PREPARATION FOR TESTING:

Before beginning the actual test for leakage, proceed as

follows;

1. Make sure that the test instrument is operating nor-

mally as specified in its instruction booklet.

Important:

Survey instruments that comply with the requirement

for instrumentations as prescribed by the perform-

ance standard for microwave ovens must be used for

testing.

SHARP

mW cm ²

Microwave leakage measurement at 5 cm distance

R-2397

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED

NOTE: " " INDICATES COMPONENTS WITH POTENTIALS ABOVE 250V.

APPEARS ON DISPLAY

C1 and C2: 1.07µF/ AC 2100V

MAGNETRON

THERMAL CUT OUT

145C°(LOWER)

TC2:

F4: WEAK POINT A018

2ND LATCH SWITCH

C1: H.V. CAPACITOR

F3:

WEAK POINT

A018

TC1 :MAGNETRON

THERMAL

CUT OUT

145C°(UPPER)

ASYMMETRIC

RECTIFIER

CONTROL

UNIT

C2: H.V. CAPACITOR

ASYMMETRIC

RECTIFIER

1ST LATCH SWITCH

(PRIMARY INTERLOCK SWITCH)

3RD LATCH SWITCH

Figure O-1. Oven SChematic-OFF Condition

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED.

2. TIME KEY TIUCHED.

3. COOKING TIME PROGRAMMED.

4. START KEY TOUCHED

TC2:

MAGNETRON

THERMAL CUT OUT

145C°(LOWER)

F4: WEAK POINT A018

2ND LATCH SWITCH

C1: H.V. CAPACITOR

F3:

WEAK POINT

A018

TC1 : MAGNETRON

THERMAL

CUT OUT

145C°(UPPER)

ASYMMETRIC

RECTIFIER

CONTROL

UNIT

C2: H.V. CAPACITOR

ASYMMETRIC

RECTIFIER

1ST LATCH SWITCH

(PRIMARY INTERLOCK SWITCH)

3RD LATCH SWITCH

Figure O-2. Oven SChematic-ON Condition

R-2397

H . V . R E C T I F I E R

R-2397

K E Y U N I T

R 9 3 ~ R 1 0 1 : 1 5 K

D 9 3 R 9 3

D 9 4 R 9 4

D 9 5 R 9 5

D 9 6 R 9 6

D 9 7 R 9 7

C 3 0

1 5 K

R 3 1

A T 2 4 C 0 4

I C - 1 I Z A 6 4 6 D R

I C 2

1 . 8 K

R 5 0

C 7

1 5 K

R 5

1 M

R 3 0 0

2 5 V

F µ 2 2

R 3 3 1 0 K

R 3 2 2 . 7 K

C 9

H Z 4 C 3

1 K

R 4

5 0 V

C 2 2

F µ 0 . 1

Z D 2

C 7 4

C 6

1 5 K

R 2 0

F µ , 1 4 0 7 V

C 2 0

4 . 7 K

R 2 0 0

C 5

F µ , 2 5 V 0 . 0 1

C 4

D 6 4

D 6 3

1 6 V

F µ , 5 0 3 V . 3

F µ 1 0 0

3 . 3 K

C 3

H Z 1 2 C 1

C 8

R 7 4

2 0 K

1 . 1 K

R 7 2

Z D 1

1 . 8 K

R 1

R 7 3

F µ , 3 5 V 1 0 0 0

C 2

F µ , 5 0 2 V . 2

1 0 0

5 0 V

F µ 0 . 0 1

D O O R R 7 0 D 7 1

C 8 1

F µ , 1 5 0 V

C 2 1

F µ , 5 0 0 V . 1

C 8 2

F µ , 5 0 V 0 . 0 1

C 7 0

C 1

2 5 V

F µ 2 2

C 6 1

2 5 V

F µ 2 2

C 6 2

3 0 0 K

R 6 5

3 0 0 K

R 6 6

D 8 1

R Y 1

D 8 3

R Y 3

D 8 4

1 5 G 4 7 1 K

V R S 1

R Y 4

1 . 5 K F

R 6 1

1 . 5 K F

R 6 2

R-2397

R101

R100

R99

(J1)

R300

R96

D95

R95

R94

D94

D93

R93

(R92)

(R91)

R97

(D92)

(D91)

D97

D96

R96

R71

(Q201)

(Q200)

(J3)

(D200)

(D74

.R50)

R63

(J11)

R65

Figure S-3. Printed Wiring Board

R-2397

PARTS LIST

Note: The parts marked "∆" may cause undue microwave exposure.

The parts marked "*" are used in voltage more than 250V.

REF. NO.

PART NO.

DESCRIPTION

Q'TY CODE

ELECTRIC PARTS

1- 1

1- 2

1- 3

1- 4

1- 5

1- 6

1- 7

1- 8

1- 9

1-10

1-11

1-12

1-13

1-14

1-15

1-16

1-17

1-18

1-19

1-20

1-21

1-22

1-23

1-24

1-25

1-26

1-27

1-28

1-29

FH-HZA050WRE0 Magnetron thermistor

QSOCLA011WRE0 Oven lamp socket

FH-HZA049WRE0 Intake thermistor

FPWBFA296WRE0 Noise filter

QFSHDA019WRE0 Fuse holder

QACCVA066WRE0 Power supply cord for European continental use

DH-HZA009WRK0 Exhaust thermistor

FW-QZA106WRK0 High voltage rectifier assembly

RTHM-A091WRE0 Oven thermal cut-out 115˚C

QSW-MA085WRE0 Stop switch

QSW-MA086WRE0 Monitor switch

QSW-MA095WRE0 1st. latch switch

QSW-MA095WRE0 2nd. latch switch

QSW-MA095WRE0 3rd. latch switch

RC-QZA165WRE0 High voltage capacitor

RLMPTA028WRE0 Oven lamp

RMOTDA209WRE0 Stirrer motor

RTHM-A037WRE0 Magnetron thermal cut-out 145˚C

RTHM-A057WRE0 Magnetron thermal cut-out 145˚C

RV-MZA239WRE0 Magnetron

QFS-CA017WRE0 Weak point A017

QFS-CA007WRE0 Fuse F6.3A

QFS-CA018WRE0 Weak point A018

RR-WZA020WRE0 Monitor resistor 4.3 Ω 20W

FMOTEA309WRK0 Blower motor

∆*

RTHM-A058WRE0 Thermal cut-out 115˚C

RTRN-A459WRE0 High voltage transformer

RFIL-A004WRE0 Ferrite clamp R

RFIL-A002WRE0 Ferrite clamp

CABINET PARTS

2- 1

2- 2

2- 3

2- 4

2- 5

2-5-1

2-5-2

2-6

FDAI-A183WRW0 Base plate assembly

PSHEGA006WRE0 Rubber sheet A

PSHEGA007WRE0 Rubber sheet B

GCOVAA250WRW0 Rear cabinet

FFTASA064WRY0 Oven lamp access cover assembly

PCUSU0407WRP0 Cushion

PREFHA059WRP0 Lamp reflector

GCABUA523WRP0 Outer case cabinet

PZETEA071WRP0 Cabinet insulation sheet

2-7

CONTROL PANEL PARTS

3- 1

3- 1A

3- 1B

3- 1C

3- 1D

3- 1E

3- 1F

3- 1G

3- 1H

C6-7

C20

C21

C22

C30

C61-62

C70

C71

DPWBFB382WRU0 Control unit

QCNCMA308DRE0 4-pin connector (A)

QCNCMA312DRE0 3-pin connector (B)

QCNCMA145DRE0 3-pin connector (D)

QCNCWA030DRE0 12-pin connector (G)

QCNCMA039DRE0 3-pin connector (H)

QLUG-A002PRE0 Tab terminal (TAB1-4)

RV-KXA053DRE0 Fluorescent display tube

PCUSGA359WRP0 Cushion

VCKYD11HF104Z Capacitor 0.1 uF 50V

RC-EZA192DRE0 Capacitor 1000 uF 35V

VCEAB31HW335M Capacitor 3.3 uF 50V

VCKYB11EX103N Capacitor 0.01 uF 25V

VCEAB31AW476M Capacitor

VCKYD11CY103N Capacitor 0.01 uF 16V

VCEAB31CW107M Capacitor 100 uF 16V

47 uF 10V

VCEAB31EW226M Capacitor

22 uF 25V

VCKYD11CY103N Capacitor 0.01 uF 16V

VCKYF31HF103Z Capacitor 0.01 uF 50V

VCKYD11CY103N Capacitor 0.01 uF 16V

VCEAB31EW226M Capacitor

22 uF 25V

VCKYF31HF103Z Capacitor 0.01 uF 50V

VCKYD11CY103N Capacitor 0.01 uF 16V

VCKYB11EX103N Capacitor 0.01 uF 25V

VCKYD11HF104Z Capacitor 0.1 uF 50V

C72

C74

R-2397

Note: The parts marked "∆" may cause undue microwave exposure.

The parts marked "*" are used in voltage more than 250V.

REF. NO.

PART NO.

DESCRIPTION

Q'TY CODE

C80

C81

C82

C200

CF1

D1-4

D6-7

D61-64

D70

D71

D81

D83-84

D93-97

IC1

IC2

Q20

Q40

Q41

Q80

Q81

Q83-84

R20

R31

R32

R33

R40

R41

R42

R43

R50

R61-62

R63-64

R65-66

R67-68

R70

R71

R72

R73

R74

R79

R80

VCEAB31HW104M Capacitor 0.1 uF 50V

VCEAB31HW225M Capacitor 2.2 uF 50V

VCEAB31HW105M Capacitor 1.0 uF 50V

VCKYD11CY103N Capacitor 0.01 uF 16V

RCRS-A010DRE0 Ceramic resonator CST4.00MGW

VHD11ES1///-1 Diode (11ES1)

VHD1SS270A/-1 Diode (1SS270A)

VHD11ES1///-1 Diode (11ES1)

VHD1SS270A/-1 Diode (1SS270A)

VHD11ES1///-1 Diode (11ES1)

VHD1SS270A/-1 Diode (1SS270A)

RH-IZA646DRE0 LSI

RH-IZA571DRE0 IC (AT24C04)

VS2SB953-PQ-4 Transistor (2SB953)

VS2SA1561TL-3 Transistor (2SA1561TL)

RH-TZA037CBE0 Transistor (KRA101M)

VS2SB1238//-3 Transistor (2SB1238)

VSDTA114YS/-3 Transistor (DTA114YS)

VSDTD143ES/-3 Transistor (DTD143ES)

VSDTB143ES/-3 Transistor (DTB143ES)

VRD-B12EF182J Resistor 1.8k ohm

VRD-B12HF561J Resistor 560 ohm

VRD-B12EF102J Resistor 1.0k ohm

1/4W

1/2W

1/4W

1/2W

1/4W

VRD-B12EF153J Resistor

VRD-B12HF150J Resistor

VRD-B12EF153J Resistor

15k ohm

15 ohm

15k ohm

VRD-B12EF272J Resistor 2.7k ohm

VRD-B12EF103J Resistor 10k ohm

VRD-B12EF332J Resistor 3.3k ohm

VRD-B12EF203J Resistor

VRD-B12EF393J Resistor

VRD-B12EF103J Resistor

20k ohm

39k ohm

10k ohm

VRD-B12EF182J Resistor 1.8k ohm

VRN-B12EK152F Resistor 1.5k ohm(F) 1/4W

VRD-B12EF102J Resistor 1.0k ohm

VRD-B12EF304J Resistor 300k ohm

1/4W

1/2W

1/4W

VRD-B12EF473J Resistor

VRD-B12EF101J Resistor

VRD-B12EF303J Resistor

47k ohm

100 ohm

30k ohm

VRD-B12EF112J Resistor 1.1k ohm

VRD-B12EF203J Resistor 20k ohm

VRD-B12EF332J Resistor 3.3k ohm

VRD-B12EF473J Resistor

VRD-B12EF471J Resistor

VRD-B12HF390J Resistor

47k ohm

470 ohm

39 ohm

R83-84

R93-101 VRD-B12EF153J Resistor

15k ohm

R200

R201

R300

(J2)

(J3)

RY1

RY3-4

SP1

VRD-B12EF472J Resistor 4.7k ohm

VRD-B12EF682J Resistor 6.8k ohm

VRD-B12EF105J Resistor 1.0M ohm

VRD-B12EF822J Resistor 8.2k ohm

VRD-B12EF363J Resistor

36k ohm

RRLY-A078DRE0 Relay (OJ-SH-118LM)

RRLY-A059DRE0 Relay (VS14MB-NR-SH6)

RALM-A003DRE0 Buzzer (PS3025P02)

RTRNPA080DRE0 Touch control transformer

RTRN-A060DRE0 Current transformer

RH-VZA010DRE0 Varistor (TNR15G471K)

VHEHZ12C1//-1 Zener diode (HZ12C1)

VHEHZ4C3///-1 Zener diode (HZ4C-3)

FPNLCB159WRK0 Control panel frame with key unit assembly

FUNTKA775WRE0 Key unit

HDECAA195WRP0 Decoration metal fittings

PCUSUA451WRP0 Cushion

CT1-2

VRS1

ZD1

ZD2

3- 2

3- 2-1

3- 2-2

3- 2-3

3- 3

3- 4

3- 5

3- 6

LANGTA243WRW0 Control panel mounting angle

XEPSD30P10XS0 Screw; control unit mounting

XEPSD40P12000 Screw; control panel mounting angle mounting

XFTSD40P08K00 Screw; decoration panel mounting for earth

R-2397

Note: The parts marked "∆" may cause undue microwave exposure.

The parts marked "*" are used in voltage more than 250V.

REF. NO.

PART NO.

DESCRIPTION

Q'TY CODE

3- 7

PCUSGA380WRP0 Cushion

OVEN PARTS

4- 1

4- 2

∆ 4- 3

PCUSUA265WRP0 Cushion

PDUC-A565WRW0 Exhaust duct

FOVN-A336WRY0 Oven cavity

4- 4

4- 5

4- 6

4- 7

4- 8

4- 9

∆ 4-10

4-11

4-12

4-13

4-14

4-15

4-16

4-17

4-18

4-19

4-20

4-21

4-22

4-23

4-24

4-25

4-26

4-27

4-28

4-29

4-30

4-31

4-32

4-33

4-34

4-35

4-36

4-37

4-38

4-39

PFILWA053WRP0 Oven light screen

MLEVPA153WRF0 Switch lever A

MLEVPA154WRF0 Switch lever B

MLEVPA155WRF0 Switch lever C

MSPRCA075WRE0 Switch spring A

MSPRCA076WRE0 Switch spring B

PHOK-A081WRF0 Latch hook

PZETEA047WRP0 Switch insulator

PDUC-A566WRF0 Mg air guide

PDUC-A567WRF0 Mg air guide cover

FGLSPA021WRY0 Ceramic shelf

FPLT-A006WRY0 Stirrer antenna upper assembly

FPLT-A005WRY0 Stirrer antenna lower assembly

LANGKA762WRP0 Partition angle R

LANGQA370WRP0 Oven lamp mounting plate

LBNDKA075WRP0 Capacitor holder

PGIDHA054WRW0 Water-proof cover

NSFTPA031WRF0 Antenna motor shaft

PCOVPA310WRF0 Splash cover

PCUSGA405WRP0 Cushion

PCUSGA409WRP0 Cushion

PCUSUA413WRP0 Cushion

PCUSUA415WRP0 Cushion

PCUSUA416WRP0 Cushion

PDUC-A607WRW0 Mg exhaust duct

PCUSUA414WRP0 Cushion

LANGQA251WRW0 Noise filter angle

LANGQ0382WRM0 Earth angle

LANGFA172WRP0 Chassis support

LBSHCA012WRE0 Cord bushing

PCUSGA441WRP0 Cushion

FFIL-A003WRK0 Air intake filter assembly

HDECEA001WRP0 Decoration sash

HDECQA146WRM0 Corner cap left

HDECQA147WRM0 Corner cap right

LANGKA679WRM0 Fixing angle s

MHNG-A215WRM0 Upper oven hinge

MHNG-A216WRM0 Lower oven hinge

PCUSGA275WRP0 BLM cushion

PCUSUA417WRP0 Cushion

MSPRCA101WRE0 Switch spring C

PCUSUA458WRP0 V/P cushion

LANGQA440WRM0 Earth angle

PCUSGA289WRP0 Cushion

4-40

4-41

∆

4-42

4-43

4-44

4-45

4-46

4-47

4-48

4-49

4-50

4-51

4-52

4-53

4-54

PCUSUA268WRP0 Cushion

PZETEA073WRP0 Insulator sheet B

PCUSUA448WRP0 Cushion

PCUSGA442WRP0 Cushion

PCUSGA443WRP0 Cushion

PCUSUA447WRP0 Cushion

PCUSGA045WRP0 Cushion

DOOR PARTS

∆

DDORFA746WRK0 Door assembly

FDORFA289WRT0 Door panel assembly

GCOVAA242WRY0 Door case

FHNDMA011WRY0 Door release lever assembly

GCOVHA350WRF0 Choke cover

JHNDPA169WRM0 Door handle

LANGKA766WRP0 Outside window fixing plate

PCUSGA430WRP0 Cushion

PGLSPA457WRE0 Door glass

PPACGA142WRP0 Door case packing

PSHEPA520WRE0 Sealer film

PSPA-A102WRE0 Door screen spacer

XFPSD40P08K00 Screw : 4mm x 8mm

5- 1

5- 2

5- 3

5- 4

5- 5

5- 6

5- 7

5- 8

5- 9

5-10

5-11

5-12

R-2397

Note: The parts marked "∆" may cause undue microwave exposure.

The parts marked "*" are used in voltage more than 250V.

REF. NO.

PART NO.

DESCRIPTION

Q'TY CODE

5-13

5-14

5-15

5-16

5-17

5-18

5-19

5-20

5-21

XHTSD40P08RV0 Screw : 4mm x 8mm

FANGKA200WRY0 Latch fixing angle

FLEVFA019WRY0 Joint lever

LSTPCA002WRM0 Latch head

MLEVPA220WRF0 Head lever

MSPRCA097WRE0 Latch spring

HBDGCA069WRE0 Door badge

XEPSD40P20000 Screw : 4mm x 20mm

∆

XWSSD40-10000 Washer : 4mm x 1mm

MISCELLANEOUS

6- 1

6- 2

6- 3

6- 4

6- 5

6- 6

6- 7

6- 8

6- 9

6-10

6-11

6-12

6-13

6-14

6-15

6-16

6-17

6-18

6-19

TINSMA004WRR0

Instruction manual (German, French, Dutch, Italian, Spanish)

TLABHA029WRR0 Menu sticker

FW-VZB402WRE0 Switch harness

FW-VZB585WRE0 Main wire harness

LHLDWA021WRE0 Harness lifter

TCAUHA083WRR0 Belgium label

LHLDWA040WRE0 Wire holder A

TLABSA054WRR0 Fuse label

PTUB-A042WRE0 Tube

TCAUHA082WRR0 Caution label

LHLDWA043WRE0 Wire saddle S

TLABSA069WRR0 Fuse label F6.3A

TSPCNC161WRR0 Rating label

TCAUHA176WRR0 Caution label

TLABSA064WRR0 A017 label

TLABSA066WRR0 Equipotential label

LHLDWA047WRE0 Space clip

LHLDWQ004YBE0 Purse lock L

LHLDWA023WRE0 Wire saddle

SCRE, NUTS AND WASHERS

7- 1

7- 2

7- 3

7- 4

7- 5

7- 6

7- 7

7- 8

7- 9

7-10

7-11

7-12

7-13

7-14

7-15

7-16

7-17

7-18

7-19

7-20

7-21

7-22

7-23

7-24

7-25

7-26

7-27

7-28

7-29

7-30

7-31

7-32

7-33

7-34

7-35

7-36

7-37

7-38

XCBWW30P08000 Screw : 3mm x 8mm

XFPSD50P12KS0 Screw : 5mm x 12mm

XFTSD40P10RV0 Screw : 4mm x 10mm

XOTSD40P06000 Screw : 4mm x 6mm

XFTSD40P12000 Screw : 4mm x 12mm

XWSSD40-10000 Washer : 4mm x 1mm

LX-WZA035WRE0 Special washer

XOTWW40P08000 Screw : 4mm x 8mm

LX-CZA038WRE0 Special screw

PSPA-A101WRE0 Washer

XTBWW40P30000 Screw : 4mm x 30mm

XCBWW30P12000 Screw : 3mm x 12mm

XEPSD30P12XS0 Screw : 3mm x 12mm

LX-CZA057WRE0 Special screw

XHPSD40P05000 Screw : 4mm x 5mm

XHTSD40P08RV0 Screw : 4mm x 8mm

XOTSD40P12000 Screw : 4mm x 12mm

XOTWW40P10000 Screw : 4mm x 10mm

XOTWW40P20000 Screw : 4mm x 20mm

XCPSD30P10000 Screw : 3mm x 10mm

XFPSD40P08K00 Screw : 4mm x 8mm

XOTSD40P12RV0 Screw : 4mm x 12mm

LX-BZA064WRE0 Special screw

XCPSD30P06000 Screw : 3mm x 6mm

XOTSD40P10000 Screw : 4mm x 10mm

XBPUW40P04000 Screw : 4mm x 4mm

XBTUW40P10000 Screw : 4mm x 10mm

XFTSD40P08000 Screw : 4mm x 8mm

XTPSD40P08000 Screw : 4mm x 8mm

XWWSD50-06000 Washer : 5mm x 0.6mm

XONSC40P10000 Screw : 4mm x 10mm

LX-BZA110WRE0 Special screw

XHPSD50P08000 Screw : 5mm x 8mm

XBPSD30P28KS0 Screw : 3mm x 28mm

XNESD30-24000 Nut : 3mm x 2.4mm

XJPSD40P10000 Screw : 4mm x 10mm

XOTSC40P12000 Screw : 4mm x 12mm

LX-EZA004WRE0 Special screw

R-2397

HOW TO ORDER REPLACEMENT PARTS

To have your order filled promptly and correctly, please furnish the following information.

1. MODEL NUMBER

3. PART NO.

2. REF. NO.

4.DESCRIPTION

1-28 RFIL-A004WRE0

POWER SUPPLY CORD

These ferrite clamps are included in High voltage rectifire assembly

1-29 RFIL-A002WRE0

6-2 PTUB-A042WRE0

R-2397

6-14

OVEN AND CABINET PARTS

2-5-2

2-6

7-31

2-5-1

7-37

2-5

4-20

7-14

6-6

7- 8

7-29

6-14

6-10

7-18

6-13

7-8

2-7

7-1

7-23

7-14

7-11

4-43

2-4

7-18

1-7

4-26

7-18

7-12

4-39

4-24

1-9

4-2

4-25

7-5

7-7

7-6

4-53

4-46

4-49

4-27

7-1

1-6

4-33

4-48

7-19

1-1

1-23

7-17

1-18

7-22

7-18

6-18

7-24

4-13

1-2

4-54

7-16

6-16

1-5

7-13

7-28

4-27

1-16

7-15

4-21

1-17

6-17

6-11

1-24

7-33

4-18

7-25

4-29

4-12

4-28

7-36

4-26

7-4

7-32

1-22

7-18 7-20

₂A1

x-2

6-19

1-23

4-27

4-40

7-33

4-32

7-18

7-36

1-5

4-3

1-20

6-8

4-4

6-12

4-1

4-50

1-20

7-25

4-37

1-15

4-19

7-32

4-42 To conner of lower

wavegide

7-16

4-15

1-8

4-41

7-26

4-17

7-24

1-26

7-10

1-15

7-16

7-26

4-21

7-10

7-16

4-8

1-19

4-16

7-1

7-38

7-35

4-36

1-27

1-17

7-15

4-9

7-2

7-30

4-38

4-23

1-11

4-34

7-2

7-21

6-15

4-5

4-6

4-22

7-30

1-27

1-21

1-25

4-11

4-44

1-13

7-21

7-3

7-27

1-4

1-12

7-34

4-9

4-10

1-10

4-7

4-31

1-14

4-30

6-5

4-51

4-47

2-1

4-52

4-14

7-4

4-35

2-3

7-17

4-45

7-16

2-2

R-2397

3-7

CONTROL PANEL PARTS

3-2-3

3-1

3-2

3-2-2

3-5

3-4

3-6

3-3

1-3

3-2-1

DOOR PARTS

5-4

5-11

5-10

5-11

5-14

5-21

5-1

5-20

5-12

5-15

5-18

5-8

5-6

5-16

5-13

5-17

5-9

5-7

5-6

5-13

5-2

5-19

5-3

5-5

R-2397

PACKING ADD KIT

* CPADBA203WRK0

DOOR PROTECTION SHEET

* SPADPA552WRE0

WRAP COVER

DOOR PAD

* SPADF0341WRE0

TRAY HOLDER

* SPADPA551WRE0

PACKING CASE

* SPAKCC551WRE0

* Not replaceable items.

PRINTING MATER

INSTRUCTION BOOK

R-2397

'97 SHARP CORP. (5U0.10E) Printed in Japan

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