Sharp Microwave Oven R 1480 Users Manual 1480/81/82(TXT)

Sharp Microwave Oven R-1482 R1480

R-1480 to the manual dd1517e9-e09b-4ab4-8769-d65cb63d2707

2015-01-23

: Sharp Sharp-Sharp-Microwave-Oven-R-1480-Users-Manual-284988 sharp-sharp-microwave-oven-r-1480-users-manual-284988 sharp pdf

Open the PDF directly: View PDF .
Page Count: 44

R-1480

R-1481

R-1482

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

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

WARNING TO SERVICE PERSONNEL: Microwave ovens con-

tain circuitry capable of producing very high voltage and

current, contact with following parts may result in a severe,

possibly fatal, electrical shock. (High Voltage Capacitor, High

Voltage Power Transformer, Magnetron, High Voltage Recti-

fier Assembly, High Voltage Harness etc..)

TABLE OF CONTENTS Page

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO

AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY ...................INSIDE FRONT COVER

BEFORE SERVICING ......................................................................................................INSIDE FRONT COVER

WARNING TO SERVICE PERSONNEL................................................................................................................ 1

MICROWAVE MEASUREMENT PROCEDURE ................................................................................................... 2

FOREWORD AND WARNING ...............................................................................................................................3

PRODUCT SPECIFICATIONS .............................................................................................................................. 4

GENERAL INFORMATION ...................................................................................................................................4

OPERATION ..........................................................................................................................................................6

TROUBLESHOOTING GUIDE ............................................................................................................................ 11

TEST PROCEDURE ............................................................................................................................................ 12

TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................ 21

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 26

PICTORIAL DIAGRAM ........................................................................................................................................34

CONTROL PANEL CIRCUIT ...............................................................................................................................35

PRINTED WIRING BOARD .................................................................................................................................36

PARTS LIST ........................................................................................................................................................ 37

PACKING AND ACCESSORIES .........................................................................................................................42

S3807R1480X//

R-1480

R-1481

R-1482

OVER THE RANGE

MICROWAVE OVEN

MODELS

SERVICE MANUAL

SHARP CORPORATION This document has been published to be used for after

sales service only.

The contents are subject to change without notice.

12345

67890

CUSTOM HELP

1 Coffee/tea

2 Roll/muffin, fresh

3 Roll/muffin, frozen

4 Hot cereal

5 Scrambled eggs



1 Dinner plate

2 Pasta/casserole

3 Frozen entree

4 Frozen snack

5 Pizza, slice

1 Baked potatoes

2 Fresh vegetables

3 Frozen vegetables

4 Rice

5 Ground meat

POPCORN

COMPU DEFROST

POWER

LEVEL KITCHEN TIMER

CLOCK MINUTE

PLUS

TURNTABLE

ON/OFF STOP

CLEAR START

TOUCH ON

WORK

LIGHT NIGHT

LIGHT FAN

HI/LO

BREAKFAST

COMPU COOK

SNACKS &



REHEAT

R-1480

R-1481

R-1482

PRECAUTIONS TO BE OBSERVED BEFORE AND

DURING SERVICING TO AVOID POSSIBLE

EXPOSURE TO EXCESSIVE MICROWAVE

ENERGY

(a) Do not operate or allow the oven to be operated with the door open.

(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other

microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3)

seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and

latches, (5) evidence of dropping or abuse.

compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,

integrity, and connections.

(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave

generation and transmission systems shall be repaired, replaced, or adjusted by procedures described

in this manual before the oven is released to the owner.

(e) A microwave leakage check to verify compliance with the Federal Performance Standard should be

performed on each oven prior to releasing oven to the owner.

BEFORE SERVICING

Before servicing an operative unit, perform a microwave emission check as per the Microwave

Measurement Procedure outlined in this service manual.

If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS

CORPORATION immediately @1-800-237-4277.

If the unit operates with the door open, service person should 1) tell the user not to operate the oven

and 2) contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration's

Center for Devices and Radiological Health immediately.

Service personnel should inform SHARP ELECTRONICS CORPORATION of any certified unit found

with emissions in excess of 4mW/cm2. The owner of the unit should be instructed not to use the unit

until the oven has been brought into compliance.

R-1480

R-1481

R-1482

WARNING TO SERVICE PERSONNEL

Microwave ovens contain circuitry capable of pro-

ducing very high voltage and current, contact with

following parts

may result in a severe, possibly

fatal, electrical shock.

(Example)

High Voltage Capacitor, High Voltage Power Trans-

former, Magnetron, High Voltage Rectifier Assem-

bly, High Voltage Harness etc..

Read the Service Manual carefully and follow all

instructions.

Before Servicing

1. Disconnect the power supply cord , and then

remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

WARNING:RISK OF ELECTRIC SHOCK.

DISCHARGE THE HIGH-VOLTAGE

CAPACITOR BEFORE SERVICING.

The high-voltage capacitor remains charged about 60

seconds after the oven has been switched off. Wait for 60

seconds and then short-circuit the connection of the high-

voltage capacitor (that is the connecting lead of the high-

voltage rectifier) against the chassis with the use of an

insulated screwdriver.

Whenever troubleshooting is performed the power supply

must be disconnected. It may in, some cases, be necessary

to connect the power supply after the outer case has been

removed, in this event,

1. Disconnect the power supply cord, and then remove

outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the leads to the primary of the power

transformer.

5. Ensure that these leads remain isolated from other

components and oven chassis by using insulation tape.

6. After that procedure, reconnect the power supply cord.

When the testing is completed,

1. Disconnect the power supply cord, and then remove

outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Reconnect the leads to the primary of the power

transformer.

5. Reinstall the outer case (cabinet).

6. Reconnect the power supply cord after the outer case is

installed.

7. Run the oven and check all functions.

After repairing

1. Reconnect all leads removed from components during

testing.

2. Reinstall the outer case (cabinet).

3. Reconnect the power supply cord after the outer case is

installed.

4. Run the oven and 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 turntable, close the door and set

the power to HIGH and set the microwave timer for two (2)

minutes. When the two minutes has elapsed (timer at zero)

carefully check that the water is now hot. If the water

remains cold carry out Before Servicing procedure and re-

examine the connections to the component being tested.

When all service work is completed and the oven is fully

assembled, the microwave power output should be checked

and microwave leakage test should be carried out.

Don't Touch !

Danger High Voltage

R-1480

R-1481

R-1482

MICROWAVE MEASUREMENT PROCEDURE

A. Requirements:

1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven

should not exceed 1mW/cm2 at any point 5cm or more from the external surface of the oven, measured prior to acquisition

by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm2 at any point 5cm or more from the external

surface of the oven.

2) Safety interlock switches Primary interlock relay and door sensing switch shall prevent microwave radiation emission in

excess of the requirement as above mentioned, secondary interlock switch shall prevent microwave radiation emission

in excess of 5 mW/cm2 at any point 5cm or more from the external surface of the oven.

B. Preparation for testing:

Before beginning the actual measurement of leakage, proceed as follows:

1) Make sure that the actual instrument is operating normally as specified in its instruction booklet.

Important:

Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard

for microwave ovens, 21 CFR 1030.10(c)(3)(i), must be used for testing.

2) Place the oven tray in the oven cavity.

3) Place the load of 275±15 ml (9.8 oz) of tap water initially at 20±5˚C (68˚F) in the center of the oven cavity.

The water container shall be a low form of 600 ml (20 oz) beaker with an inside diameter of approx. 8.5 cm (3-1/2 in.)

and made of an electrically nonconductive material such as glass or plastic.

The placing of this standard load in the oven is important not only to protect the oven, but also to insure that any leakage

is measured accurately.

4) Set the cooking control on Full Power Cooking Mode

5) Close the door and select a cook cycle of several minutes. If the water begins to boil before the survey is completed,

replace it with 275 ml of cool water.

C. Leakage test:

Closed-door leakage test (microwave measurement)

1) Grasp the probe of the survey instrument and hold it perpendicular to the gap between the door and the body of the oven.

2) Move the probe slowly, not faster than 1 in./sec. (2.5 cm/sec.) along the gap, watching for the maximum indication on

the meter.

3) Check for leakage at the door screen, sheet metal seams and other accessible positions where the continuity of the metal

has been breached (eg., around the switches, indicator, and vents).

While testing for leakage around the door pull the door away from the front of the oven as far as is permitted by the closed

latch assembly.

4) Measure carefully at the point of highest leakage and make sure that the highest leakage is no greater than 4mW/cm2,

and that the secondary interlock switch does turn the oven OFF before any door movement.

NOTE: After servicing, record data on service invoice and microwave leakage report.

R-1480

R-1481

R-1482

SHARP ELECTRONICS CORPORATION

SHARP PLAZA, MAHWAH,

NEW JERSEY 07430-2135

SERVICE MANUAL

OVER THE RANGE

MICROWAVE OVEN

R-1480 / R-1481 / R-1482

FOREWORD

This Manual has been prepared to provide Sharp Electronics Corp.

Service Personnel with Operation and Service Information for the

SHARP OVER THE RANGE MICROWAVE OVEN, R-1480, R-1481,

R-1482.

It is recommended that service personnel carefully study the entire

text of this manual so that they will be qualified to render satisfactory

customer service.

Check the interlock switches and the door seal carefully. Special

attention should be given to avoid electrical shock and microwave

radiation hazard.

WARNING

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.

Servicing and repair work must be carried out only by trained service

personnel. DANGER

Certain initial parts are intentionally not grounded and present

a risk of electrical shock only during servicing. Service

personnel - Do not contact the following parts while the

appliance is energized;

High Voltage Capacitor, Power Transformer, Magnetron, High

Voltage Rectifier Assembly, High Voltage Harness;

If provided, Vent Hood, Fan assembly, Cooling Fan Motor.

All the parts marked “*” on parts list are used at voltages more than

250V.

Removal of the outer wrap gives access to voltage above 250V.

All the parts marked “∆” on parts list may cause undue microwave

exposure, by themselves, or when they are damaged, loosened

or removed.

PRODUCT DESCRIPTION

GENERAL INFORMATION

OPERATION

TROUBLESHOOTING GUIDE AND

TEST PROCEDURE

TOUCH CONTROL PANEL

COMPONENT REPLACEMENT

AND ADJUSTMENT PROCEDURE

WIRING DIAGRAM

PARTS LIST

R-1480

R-1481

R-1482

ITEM DESCRIPTION

Power Requirements 120 Volts / 14.3 Amperes

60 Hertz

Single phase, 3 wire grounded

Power Output 950 watts (IEC-705 TEST PROCEDURE)

Operating frequency of 2450MHz

Convection Power Output 1700 watts

Case Dimensions Width 29-15/16"

Height 16-3/8"

Depth 15- 1/4" (Not including the door handle)

Cooking Cavity Dimensions Width 20-1/4"

Height 8-3/16"

1.4 Cubic Feet Depth 14-1/2"

Hood lamp 2 bulbs, 30W x 2, Incandescent light bulbs

Hood fan Approx. 300 C.F.M.

Control Complement Touch Control System

Clock ( 1:00 - 12:59 )

Timer (0 - 99 min. 99 seconds)

Microwave Power for Variable Cooking

Repetition Rate;

P-HI..................................................Full power throughout the cooking time

P-90 .................................................................... approx. 90% of Full Power

P-80 .................................................................... approx. 80% of Full Power

P-70 .................................................................... approx. 70% of Full Power

P-60 .................................................................... approx. 60% of Full Power

P-50 .................................................................... approx. 50% of Full Power

P-40 .................................................................... approx. 40% of Full Power

P-30 .................................................................... approx. 30% of Full Power

P-20 .................................................................... approx. 20% of Full Power

P-10 .................................................................... approx. 10% of Full Power

P-0 .................................................... No power throughout the cooking time

CUSTOM HELP pad, BREAKFAST pad, POPCORN pad,

SNACKS & REHEAT pad, COMPU DEFROST pad, COMPU COOK pad,

Number selection pads, POWER LEVEL pad, KITCHEN TIMER / CLOCK pad

MINUTE PLUS pad, TURNTABLE ON / OFF pad, START / TOUCH ON pad

WORK LIGHT pad, NIGHT LIGHT pad, FAN HI / LO pad

Oven Cavity Light 30W x 1 Incandescent light bulb

Safety Standard UL Listed FCC Authorized

DHHS Rules, CFR, Title 21, Chapter 1, Subchapter J

Weight Approx. 55 lbs.

PRODUCT SPECIFICATION

GENERAL INFORMATION

GROUNDING INSTRUCTIONS

This oven is equipped with a three prong grounding plug. It must be plugged into a wall receptacle that is properly installed

and grounded in accordance with the National Electrical Code and local codes and ordinances.

In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the

electric current.

WARNING: Improper use of the grounding plug can result in a risk of electric shock.

R-1480

R-1481

R-1482

Electrical Requirements

The oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE

GROUNDING PIN FROM THE PLUG.

The power supply cord and plug must be connected to a separate 120 Volt AC, 60 Hz, 15 Amp. or more branch circuit, using

a grounded receptacle. The receptacle should be located inside the cabinet directly above the Microwave Oven/Hood

system mounting location.

OVEN DIAGRAM

1. Oven door with see-through window.

2. Door hinges.

3. Stirrer cover.

4. Turntable motor shaft.

5. Oven lamp.

It will light when oven is operating or door is open.

6. Door latches.

The oven will not operate unless the door is securely closed.

7. Auto-Touch control panel.

8. Time display: Digital display, 99 minutes 99 seconds.

9. Ventilation openings.

10. Light Cover.

11. Grease filters.

12. Removable turntable.

The turntable will rotate clockwise or counterclockwise.

Only remove for cleaning.

13. Removable turntable support.

14. Power supply cord

3-Pronged Plug

Grounded

Receptacle Box

Grounding Pin

3-Pronged Receptacle

R-1480

R-1481

R-1482

MIX CONV COOK LBS KG

TURNTABLE

OFF HELP

CONTROL PANEL

OPERATION

DESCRIPTION OF OPERATING SEQUENCE

The following is a description of component functions during

oven operation.

OFF CONDITION

Closing the door activates the door sensing switch and

secondary interlock switch. (In this condition, the monitor

switch contacts are opened.)

When oven is plugged in, 120 volts A.C. is supplied to the

control unit. (Figure O-1).

1. The display will show , , ,

,, , ,

and .

To set any program or set the clock, you must first touch

the STOP/CLEAR pad. The display will clear, and " : "

will appear .

COOKING CONDITION

Program desired cooking time touching the NUMBER pads.

When the START pad is touched, the following operations

occur:

1. The contacts of relays are closed and components

connected to the relays are turned on as follows.

(For details, refer to Figure O-2)

12345

67890

CUSTOM HELP

1 Coffee/tea

2 Roll/muffin, fresh

3 Roll/muffin, frozen

4 Hot cereal

5 Scrambled eggs



1 Dinner plate

2 Pasta/casserole

3 Frozen entree

4 Frozen snack

5 Pizza, slice

1 Baked potatoes

2 Fresh vegetables

3 Frozen vegetables

4 Rice

5 Ground meat

POPCORN

COMPU DEFROST

POWER

LEVEL KITCHEN TIMER

CLOCK MINUTE

PLUS

TURNTABLE

ON/OFF STOP

CLEAR START

TOUCH ON

WORK

LIGHT NIGHT

LIGHT FAN

HI/LO

BREAKFAST

COMPU COOK

SNACKS &



REHEAT

R-1480

R-1481

R-1482

RELAY CONNECTED COMPONENTS

RY1 Oven lamp / Fan motor / Stirrer motor

RY2 Power transformer

RY3 Turntable motor

RY4 Hood fan motor

2. 120 volts A.C. is supplied to the primary winding of the

power transformer and is converted to about 3.3 volts

A.C. output on the filament winding, and approximately

2000 volts A.C. on the high voltage winding.

3. The filament winding voltage heats the magnetron

filament and the H.V. winding voltage is sent to a voltage

doubler circuit.

4. The microwave energy produced by the magnetron is

channelled through the waveguide into the cavity feed-

box, and then into the cavity where the food is placed to

be cooked.

5. Upon completion of the cooking time, the power

transformer, oven lamp, etc. are turned off, and the

generation of microwave energy is stopped. The oven

will revert to the OFF condition.

6. When the door is opened during a cook cycle, monitor

switch, door sensing switch, secondary interlock switch

and primary interlock relay are activated with the following

results. The circuits to the stirrer motor, the cooling fan

motor, the turntable motor, and the high voltage

components are de-energized, and the digital read-out

displays the time still remaining in the cook cycle when

the door was opened.

7. The monitor switch is electrically monitoring the operation

of the secondary interlock switch and primary interlock

relay (RY2) and is mechanically associated with the door

so that it will function in the following sequence.

(1) When the door opens from a closed position, the

primary interlock relay and secondary interlock switch

open their contacts, and then the monitor switch

contacts close.

(2) When the door is closed from the open position, the

monitor switch contacts first open, and then the

contacts of the secondary interlock switch and door

sensing switch close.

If the secondary interlock switch and primary interlock relay

(RY2) fail with their contacts closed when the door is

opened, the closing of the monitor switch contacts will form

a short circuit through the monitor fuse, secondary interlock

switch and primary interlock relay (RY2), causing the moni-

tor fuse to blow.

POWER LEVEL P-0 TO P-90 COOKING

When Variable Cooking Power is programmed, the 120

volts A.C. is supplied to the power transformer intermittently

through the contacts of relay (RY2) which is operated by the

control unit within an interval second time base. Microwave

power operation is as follows:

VARI-MODE ON TIME OFF TIME

Power 10(P-HI) 32 sec. 0 sec.

(100% power)

Power 9(P-90) 30 sec. 2 sec.

(approx. 90% power)

Power 8(P-80) 26 sec. 6 sec.

(approx. 80% power)

Power 7(P-70) 24 sec. 8 sec.

(approx. 70% power)

Power 6(P-60) 22 sec. 10 sec.

(approx. 60% power)

Power 5(P-50) 18 sec. 14 sec.

(approx. 50% power)

Power 4(P-40) 16 sec. 16 sec.

(approx. 40% power)

Power 3(P-30) 12 sec. 20 sec.

(approx. 30% power)

Power 2(P-20) 8 sec. 24 sec.

(approx. 20% power)

Power 1(P-10) 6 sec. 26 sec.

(approx. 10% power)

Power 0(P-0) 0 sec. 32 sec.

(0% power)

Note: The ON/OFF time ratio does not correspond with

the percentage of microwave power, because

approx. 2 seconds are needed for heating of the

magnetron filament.

COMPU COOK

COMPU COOK will automatically compute the microwave

power and cooking time. Set the desired program by touch-

ing one of the COMPU COOK pad, and number pad to

select menu. Enter the weight or quantity by touching the

Number pads. When the START pad is touched, the follow-

ing operations occur:

1. The COOK indicator will light.

2. The cooking time will appear on the display and start

counting down to zero. The cooking time is adjusted

automatically according to the weight of the food.

3. The shut-off relays (RY1, RY2 and RY3) are energized,

turning on the oven lamp, turntable motor, cooling fan

motor and convection motor. The power supply voltage

is applied to the heating element.

4. Now, the oven is in the microwave cooking mode.

COMPU DEFROST COOKING

The COMPU DEFROST key is a special function key to

defrost meats and poultry faster and better. COMPU DE-

FROST automatically defrosts roast beef, etc.. Touch the

COMPU COOK pad and number pad to select menu and

enter the food weight by touching the number pads. When

the START pad is touched, the oven will cook according to

the special cooking sequence.

R-1480

R-1481

R-1482

2. HORIZONTAL VENTING

The air handing is the same as VERTICAL VENTING

except that the final air discharge is directed horizontally

out from the top rear of the oven into the customer's vent

system.

_: AIR FLOW

3. RE-CIRCULATION (INSIDE VENTING)

The air handing is the same as VERTICAL VENTING

except that the final air discharge is directed horizontally

through the upper front of the oven into the kitchen. IN

this case, the accessory charcoal filter RK-230 must be

provided to filter the air before it leaves the oven.

_: AIR FLOW

VENTILATION METHODS HOT AIR EXHAUST

1. VERTICAL VENTING

For this venting method, hot air rising from the

conventional range below is drawn in by the hood fan

motor through the grease filters at the right and left sides

of the base cover, up through the right and left sides of

the oven cavity, then discharged vertically at rear center

top of the oven, into the customer's vent system.

_: AIR FLOW

GREASE 

FILTER



HOOD FAN MOTOR TO DUCT

TO DUCT

HOOD 

INTAKE 

DUCT

HOOD 

INTAKE 

DUCT

HOOD FAN MOTOR

GREASE 

FILTER



TO DUCT

HOOD 

INTAKE 

DUCT

HOOD EXHAUST 

LOUVER

HOOD FAN MOTOR CHARCOAL 

FILTER

R-1480

R-1481

R-1482

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED

2. COOKING TIME PROGRAMMED

3. VARIABLE COOKING CONTROL "HIGH"

4. "START" PAD TOUCHED

Figure O-2. Oven Schematic-Cooking Condition

Figure O-1. Oven Schematic-Off Condition

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED

2. CLOCK APPEARS ON DISPLAY

MAGNETRON 

TEMPERATURE FUSE

FUSE 

20A

TURNTABLE

MOTOR

FAN

MOTOR

STIRRER

MOTOR

MAGNETRON

OVEN LAMP

MONITOR

SWITCH

BLKWHT

POWER

TRANSFORMER

HIGH VOLTAGE

CAPACITOR

0.94µF

HIGH VOLTAGE

RECTIFIER

COM. N.O.

COM.

CONTROL UNIT

GND

GRN

HOOD

MOTOR

High

Low

A1 A3 B9 A7 A5 N.O.

DOOR

SENSING

SWITCH

SECONDARY

INTERLOCK

SWITCH

120 V AC.

60 Hz

HOOD

LAMP

HL HL

RY3 RY1 RY2

PRIMARY

INTERLOCK 

RELAY

STM

TTM

HOOD FAN

THERMAL

CUT OUT

HOOD

CAPACITOR

RY4

RY5

N.C.

CAVITY 

THERMAL CUT-OUT

SSR

MAGNETRON 

TEMPERATURE FUSE

FUSE 

20A

TURNTABLE

MOTOR

FAN

MOTOR

STIRRER

MOTOR

MAGNETRON

OVEN LAMP

MONITOR

SWITCH

BLKWHT

POWER

TRANSFORMER

HIGH VOLTAGE

CAPACITOR

0.94µF

HIGH VOLTAGE

RECTIFIER

COM. N.O.

COM.

CONTROL UNIT

GND

GRN

HOOD

MOTOR

High

Low

A1 A3 B9 A7 A5 N.O.

DOOR

SENSING

SWITCH

SECONDARY

INTERLOCK

SWITCH

120 V AC.

60 Hz

HOOD

LAMP

HL HL

RY3 RY1 RY2

PRIMARY

INTERLOCK 

RELAY

STM

TTM

HOOD FAN

THERMAL

CUT OUT

HOOD

CAPACITOR

RY4

RY5

N.C.

CAVITY 

THERMAL CUT-OUT

SSR

R-1480

R-1481

R-1482

DESCRIPTION AND FUNCTION OF COMPONENTS

DOOR OPEN MECHANISM

The door is opened by pulling the door handle, refer to the

Figure D-1.

CAUTION: BEFORE REPLACING A BLOWN MONITOR

FUSE TEST THE DOOR SENSING SWITCH,

PRIMARY INTERLOCK RELAY (RY2), SEC-

ONDARY INTERLOCK SWITCH AND MONI-

TOR SWITCH FOR PROPER OPERATION.

(REFER TO CHAPTER "TEST PROCEDURE").

NOTE: MONITOR FUSE AND SWITCH ARE REPLACED

AS AN ASSEMBLY

TEMPERATURE FUSE (MG)

The temperature fuse located near the waveguide is

designed to prevent damage to the magnetron if an over

heated condition develops in the tube due to cooling fan

failure, obstructed air guide, dirty or blocked air intake, etc.

Under normal operation, the temperature fuse remains

closed. However, the temperature fuse will open at 302˚F

(150˚C) causing the oven to shut down.

THERMAL CUT-OUT (HOOD )

This thermal cut-out located on the right base plate. It is

designed to automatically turn on the hood fan motor

whenever the hot air rising from the conventional range

below causes the temperature at the thermal cut-out to rise

to 140˚F (60˚C) or higher, thus removing this hot air from

around microwave oven. When the temperature around the

thermal cut-out drops to 113˚F (45˚C) or lower, the thermal

cut-out shuts off the hood fan motor.

THERMAL CUT-OUT (CAVITY )

This thermal cut-out is located on the top of the oven cavity.

It is designed to prevent damage to the oven unit if the food

in the oven catches fire due to overheating produced by

improper setting of cooking time or failure of control unit.

Under normal operation, the thermal cut-out remains closed.

However, the thermal cut-out will open at 293˚F (145˚C)

causing the oven to shut down.

TURNTABLE MOTOR

The turntable motor rotates the turntable located on the

bottom of the oven cavity, so that the foods on the turntable

cook evenly during cooking. Turntable will turn in either

direction. The turntable motor can be turned off by touching

TURNTABLE ON/OFF pad.

COOLING FAN MOTOR

The cooling fan motor drives a blade which draws external

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

surrounding the magnetron and cools the magnetron. This air

is channelled through the oven cavity to remove steam and

vapors given off from the heating foods. It is then exhausted

through the exhausting air vents at the oven cavity.

HOOD

FAN MOTOR

The hood fan motor is a two-speed, single-phase, double

pole induction type, requiring a hood fan capacitor. It is

located outside the upper rear part of the oven cavity, is to

remove, from around the oven, hot air rising from the

conventional electric or gas range over which it is installed.

Figure D-1. Door Open Mechanism

DOOR SENSING AND SECONDARY INTERLOCK

SWITCHES

The secondary interlock switch is mounted in the lower

position of the latch hook and the door sensing switch in the

primary interlock system is mounted in the upper position of

the latch hook. They are activated by the latch heads on the

door. When the door is opened, the switches interrupt the

circuit to all components. A cook cycle cannot take place

until the door is firmly closed thereby activating both inter-

lock switches. The primary interlock system consists of the

door sensing switch and primary interlock relay located on

the control circuit board.

MONITOR SWITCH

The monitor switch is activated (the contacts opened) by the

latch head on the door while the door is closed. The switch

is intended to render the oven inoperative by means of

blowing the monitor fuse when the contacts of the primary

interlock relay (RY2) and secondary interlock switch fail to

open when the door is opened.

Functions:

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

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

closed. At this time the primary interlock relay (RY2) and

secondary interlock switch are in the OFF condition

(contacts open) due to their being normally open contact

switches. And the contacts of relay (RY1) are in the ON

condition (contacts close).

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

contacts are first opened and then the door sensing

switch and the secondary interlock switch contacts close.

(On opening the door, each of these switches operate

inversely.)

3. If the door is opened, and the primary interlock relay

(RY2) and secondary interlock switch contacts fail to

open, the monitor fuse blows simultaneously with closing

of the monitor switch contacts.

Secondary

Interlock

Switch

Monitor

Switch

Monitor

Fuse

Door

Sensing

Switch

Latch

Hook

Door

Latch

Heads

R-1480

R-1481

R-1482

TROUBLESHOOTING GUIDE

Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.

When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. 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.

IMPORTANT: If the oven becomes inoperative because of a blown monitor fuse, check the monitor switch, relay (RY1)

primary interlock relay (RY2), door sensing switch and secondary interlock switch before replacing the

monitor fuse. If monitor fuse is replaced, the monitor switch must also be replaced. Use part FFS-BA016/

KiT as an assembly.

IMPORTANT: Whenever troubleshooting is performed with the power supply cord disconnected. It may in, some cases,

be necessary to connect the power supply cord after the outer case has been removed, in this event,

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the leads to the primary of the power transformer.

5. Ensure that the leads remain isolated from other components and oven chassis by using insulation tape.

6. After that procedure, reconnect the power supply cord.

When the testing is completed

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Reconnect the leads to the primary of the power transformer.

5. Reinstall the outer case (cabinet).

6. Reconnect the power supply cord after the outer case is installed.

7. Run the oven and check all functions.

This air is then expelled either vertically or horizontally

through the customer supplied duct system, or discharged

back into the kitchen.

STIRRER MOTOR

The stirrer motor drives the stirrer fan to stir the microwave

radiation from the waveguide.

HOOD LAMP

The hood lamps are mounted at the hood lamp angle on the

base cover. The hood lamps can be turned off and on by

touching the WORK LIGHT pad or the NIGHT LIGHT pad.

And also the brightness can be varied to high or low by

touching the WORK LIGHT pad or the NIGHT LIGHT pad.

R-1480

R-1481

R-1482

CK = Check / RE = Replace

POSSIBLE CASE AND 

DEFECTIVE PARTS

PROBLEM

TEST PROCEDURE

CONDITION

OFF



CONDITION

IDLE



CONDITION

MICROWAVE

COOKING

CONDITION



Home fuse blows when power cord is plugged into wall receptacle.

Monitor fuse blows when power cord is plugged into wall receptacle.

Display does not illuminate when power cord is first plugged into wall

receptacle.



Display does not operate properly when STOP/CLEAR key is touched.

(The time of day should appear on the display with beep sound during

normal condition.)

Oven lamp does not light with door is opened.



Hood fan motor operates when power cord is first plugged into wall

receptacle.



Temperature of oven base seems more than 140˚F (60˚C) because of

operation of the range below. But hood fan motor does not turn on

automatically. (Normally, food fan motor should be operating at low

speed.)

Hood lights do not turn on when WORK LIGHT pad or NIGHT LIGHT pad

is pressed.



Hood fan motor does not rotate at all with touched FAN HI/LO pad.



Speed of the hood fan motor does not change when the FAN HI/LO pad is

touched for this function.

Oven lamp does not light in cook cycle. (But it does light when door is

opened.)



Fan motor does not operate. (Oven lamp and turntable motor operate.)

Turntable motor does not operate (Oven lamp lights and fan motor

operate.)



Oven does not go into cook cycle when START pad is touched



Oven seems to be operating but little or no heat is produced in oven load.

(Food incompletely cooked or not cooked at all at end of cook cycle.)



Oven goes into a cook cycle but extremely uneven heating is produced in

oven load (food).



Variable cooking does not operate properly except Cooking Power 10 (P-

HI) mode.

Function of COMPU DEFROST does not operate properly.



Stirrer motor does not operate. (Other parts operate.)



Oven goes into COMPU DEFROST but food is not defrosted well.





CK LOW VOLTAGE

CK NO POWER AT OUTLET



RE SHORTED IN POWER CORD

CK OPENED OR SHORTED WIRING

CK HOOD MOTOR CAPACITOR

RE HOOD LAMP OR SOCKET

CK TURNTABLE OFF CONDITION

RE STIRRER MOTOR

RE TURNTABLE MOTOR

RE FAN MOTOR

RE OVEN LAMP OR SOCKET

 P FOIL PATERN ON P.W.B.

 O COMPU DEFROST

 N RELAY (RY-5)

 N RELAY (RY-4)

 N RELAY (RY-3)

 N RELAY (RY-2)

 N RELAY (RY-1)

 M KEY UNIT

 L CONTROL UNIT

 K HOOD FAN MOTOR 

 J HOOD HERMAL CUT-OUT 

 I MONITOR FUSE 

 H MONITOR SWITCH

G

PRIMARY INTERLOCK SYSTEM

 F SECONDARY INTERLOCK SWITCH



E

TEMPERATURE FUSE OR THERMAL CUT-OUT



 D HIGH VOLTAGE CAPACITOR

 C H.V. RECTIFIER 

 B POWER TRANSFORMER

 A MAGNETRON

R-1480

R-1481

R-1482

B POWER TRANSFORMER TEST

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check

across the magnetron filament leads should indicate less than 1 ohm.

5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads

and chassis ground. This test should indicate an infinite resistance. If there is little or no resistance

the magnetron is grounded and must be replaced.

6. Reconnect all leads removed from components during testing.

7. Reinstall the outer case (cabinet).

8. Reconnect the power supply cord after the outer case is installed.

9. Run the oven and check all functions.

MICROWAVE OUTPUT POWER

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

condition (outer case fitted).

HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD

BE OBSERVED.

Power output of the magnetron can be measured by performing a water temperature rise test. This test

should only be used if above tests do not indicate a faulty magnetron and there is no defect in the following

components or wiring: silicon rectifier, high voltage capacitor and power transformer. This test will require

a 16 ounce (453cc) measuring cup and an accurate mercury thermometer or thermocouple type

temperature tester. For accurate results, the following procedure must be followed carefully:

1. Fill the measuring cup with 16 oz. (453cc) of tap water and measure the temperature of the water with

a thermometer or thermocouple temperature tester. Stir the thermometer or thermocouple through

the water until the temperature stabilizes. Record the temperature of the water.

2. Place the cup of water in the oven. Operate oven at POWER 10(HIGH) selecting more than 60

seconds cook time. Allow the water to heat for 60 seconds, measuring with a stop watch, second hand

of a watch or the digital read-out countdown.

3. Remove the cup from the oven and again measure the temperature, making sure to stir the

thermometer or thermocouple through the water until the maximum temperature is recorded.

4. Subtract the cold water temperature from the hot water temperature. The normal result should be 27.7

to 51.5˚F(15.4 to 28.6˚C) rise in temperature. If the water temperatures are accurately measured and

tested for the required time period the test results will indicate if the magnetron tube has low power

output (low rise in water temperature) which would extend cooking time or high power output (high

rise in water temperature) which would reduce cooking time. Because cooking time can be adjusted

to compensate for power output, the magnetron tube assembly should be replaced only if the water

temperature rise test indicates a power output well beyond the normal limits. The test is only accurate

if the power supply line voltage is 120 volts and the oven cavity is clean.

A MAGNETRON ASSEMBLY TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the primary input terminals and measure the resistance of the transformer with an

ohmmeter. Check for continuity of the coils with an ohmmeter. On the R x 1 scale, the resistance of

the primary coil should be less than 1 ohm and the resistance of the high voltage coil should be

approximately 90 ohms; the resistance of the filament coil should be less than 1 ohm.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

R-1480

R-1481

R-1482

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. If the capacitor is open, no high voltage will be available to the magnetron. Disconnect input leads

and check for short or open between the terminals using an ohmmeter.

Checking with a high ohm scale, if the high voltage capacitor is normal, the meter will indicate

continuity for a short time and should indicate an open circuit once the capacitor is charged. If the

above is not the case, check the capacitor with an ohmmeter to see if it is shorted between either of

the terminals and case. If it is shorted, replace the capacitor.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

D HIGH VOLTAGE CAPACITOR TEST

E CAVITY THERMAL CUT-OUT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. A continuity check across the thermal cut-out terminals should indicate a closed circuit unless the

temperature of the thermal cut-out reaches approximately 293˚F(145˚C).

An open thermal cut-out indicates overheating of the oven, exchange the oven thermal cut-out and

check inside of oven cavity and for improper setting of cooking time or operation of control unit. Check

for restricted air flow through the vent holes of the oven cavity, especially the cooling fan and air guide.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

MAGNETRON TEMPERATURE FUSE TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. A continuity check across the temperature fuse terminals should indicate a closed circuit. If the

temperature of the magnetron reaches approximately 302˚F(150˚C), the temperature fuse opens. An

open temperature fuse indicates overheating of the magnetron. Check for restricted air flow to the

magnetron, especially the cooling fan air guide.

5. Reconnect all leads removed from components during testing.

C HIGH VOLTAGE RECTIFIER TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance

across the terminals and observe, reverse the leads to the rectifier terminals and observe meter

reading. If a short is indicated in both directions, or if an infinite resistance is read in both directions,

the rectifier is probably defective and should be replaced.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

NOTE: Be sure to use an ohmmeter that will supply a forward bias voltage of more than 6.3 volts.

(HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO

MEASURE THE FILAMENT AND HIGH VOLTAGE.)

R-1480

R-1481

R-1482

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Before performing this test, make sure that the secondary interlock switch and the primary interlock

relay are operating properly, according to the above Switch Test Procedure. Disconnect the wire lead

from the monitor switch (COM) terminal. Check the monitor switch operation by using the ohmmeter

as follows. When the door is open, the meter should indicate a closed circuit. When the monitor switch

actuator is pushed by a screw driver through the lower latch hole on the front plate of the oven cavity

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

CAUTION: IF THE THERMAL CUT-OUT OR TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT

AT ROOM TEMPERATURE, REPLACE THERMAL CUT-OUT OR TEMPERATURE FUSE.

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal

of the switch. The meter should indicate an open circuit with the door open and a closed circuit with

the door closed. If improper operation is indicated, replace the secondary interlock switch.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

F SECONDARY INTERLOCK SWITCH TEST

H MONITOR SWITCH TEST

G PRIMARY INTERLOCK SYSTEM TEST

DOOR SENSING SWITCH

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal

of the switch. The meter should indicate an open circuit with the door open and a closed circuit with

the door closed. If improper operation is indicated, replace the door sensing switch.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

NOTE: If the door sensing switch contacts fail in the open position and the door is closed, the cooling

fan motor, stirrer motor and oven light will be activated by RY1.

PRIMARY INTERLOCK RELAY (RY2)

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect two (2) wire leads from the male tab terminals of the Primary Interlock Relay. Check the

state of the relay contacts using a ohmmeter. The relay contacts should be open. If the relay contacts

are closed, replace the circuit board entirely or the relay itself.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

R-1480

R-1481

R-1482

I BLOWN MONITOR FUSE TEST

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. If the monitor fuse is blown when the door is opened, check the primary interlock relay, secondary

interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before

replacing the blown monitor fuse.

CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE PRIMARY INTERLOCK

RELAY, SECONDARY INTERLOCK SWITCH, DOOR SENSING SWITCH AND MONITOR

SWITCH FOR PROPER OPERATION.

If the monitor fuse is blown by improper switch operation, the monitor fuse and monitor switch must

be replaced with "monitor fuse and monitor switch assembly" part number FFS-BA016/KiT, even if

the monitor switch operates normally. The monitor fuse and monitor switch assembly is comprised

of a 20 ampere fuse and switch.

5. Reconnect all leads removed from components during testing.

6. Re-install the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

with the door opened (in this condition the plunger of the monitor switch is pushed in), the meter should

indicate an open circuit. If improper operation is indicated, the switch may be defective. After testing

the monitor switch, reconnect the wire lead to the monitor switch (COM) terminal and check the

continuity of the monitor circuit.

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after

the outer case is installed.

8. Run the oven and check all functions.

Secondary

Interlock

Switch

Monitor

Switch

Screw Driver

Ohmmeter

Black White/White

J HOOD THERMAL CUT-OUT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. A continuity check across the thermal cut-out terminals should indicate an open circuit unless the

temperature of the thermal cut-out reaches approximately 140˚F(60˚C) or more. At that temperature,

the contacts will close. The thermal cut-out opens automatically at approximately 113˚F(45˚C).

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

K HOOD FAN MOTOR TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. If the motor does not turn, touch the FAN HI / LO pad once (set hood fan motor power "HIGH") and

check voltage between pins "1" and "2" (Blue and Black wires) of the 6 pin connector. If 120 Volts

appear and the hood capacitor is good, replace the hood fan assembly. If 120 Volts does not appear,

check the motor circuit. The resistance values of motor terminals are as follows:

R-1480

R-1481

R-1482

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

Resistance between;

BLU (1) AND YLW (4) = 0Ω(Shorted)

BLK (2) AND YLW (4) = 32Ω

BLU (1) AND BLK (2) = 32Ω

BLK (2) AND WHT (3) = 20Ω

WHT (3) AND RED (5) = 45Ω

123

BLU BLK WHT

YLW RED

6-PIN CONNECTOR

OF HOOD FAN MOTOR

5. Reconnect all leads removed from components during testing.

6. Reinstall the outer case (cabinet).

7. Reconnect the power supply cord after the outer case is installed.

8. Run the oven and check all functions.

L TOUCH CONTROL PANEL ASSEMBLY TEST

The touch control panel consists of circuits including semiconductors such as LSI, ICs, 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 Key

Unit, and troubleshooting by unit replacement is described according to the symptoms indicated.

Before testing,

1) Disconnect the power supply cord, and then remove outer case. Refer to procedure of "HOOD

EXHAUST LOUVER REMOVAL", "REMOVAL OF OVEN FROM WALL" and "OUTER CASE

REMOVAL".

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Disconnect the leads to the primary of the power transformer.

5) Ensure that these leads remain isolated from other components and oven chassis by using

insulation tape.

6) After that procedure, re-connect the power supply cord.

1. Key Unit.

NOTE ;

1) Disconnect the power supply cord, and then remove outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Check key unit ribbon connection before replacement.

5) Reconnect all leads removed from components during testing.

6) Re-install the outer case (cabinet).

7) Reconnect the power supply cord after the outer case is installed.

8) Run the oven and check all functions.

The following symptoms indicate a defective key unit.

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

b) When touching a number pad, two figures or more are displayed.

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

If the key unit is defective.

1) Disconnect the power supply cord, and then remove outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Replace the key unit.

5) Reconnect all leads removed from components during testing.

6) Re-install the outer case (cabinet).

32 Ω

20 Ω45 Ω

HOOD FAN

CAPACITOR

YLW

RED

BLU

BLK

WHT

R-1480

R-1481

R-1482

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

7) Reconnect the power supply cord after the outer case is installed.

8) Run the oven and check all functions.

2. Control Unit.

The following symptoms indicate a defective control unit. Before replacing the control unit, perform

the Key unit test (Procedure M) to determine if control unit is faulty.

2-1 In connection with pads.

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

b) When touching the pads, no pads produce a signal.

2-2 In connection with indicators

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

b) At 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) Clock does not operate properly.

c) Cooking is not possible.

When testing is completed,

1) Disconnect the power supply cord, and then remove outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Reconnect all leads removed from components during testing.

5) Re-install the outer case (cabinet).

6) Reconnect the power supply cord after the outer case is installed.

7) Run the oven and check all functions.

M KEY UNIT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon cable

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 door sensing

switch connecter). Use the Key unit matrix indicated on the control panel schematic and place a

jumper wire between the pins that correspond to the STOP/CLEAR pad making momentary contact.

If the control unit responds by clearing with a beep the key unit is faulty and must be replaced. If the

control unit does not respond, it is faulty and must be replaced. 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.

5. Reconnect all leads removed from components during testing.

6. Re-install the outer case (cabinet).

7. Reconnect the power supply cord after

the outer case is installed.

8. Run the oven and check all functions.

BREAK

FAST CUSTOM

HELP

POPCORN

COMPU

COOK

COMPU

DEFROST

POWER

LEVEL

TURN

TABLE

ON / OFF

WORK

LIGHT

NIGHT

LIGHT

FAN

HI / LO

STOP

CLEAR

START

TOUCH ON

MINUTE

PLUS

KITCHEN

TIMER

CLOCK

SNACKS

&

REHEAT

G 1 G 2 G 3 G 4 G 5 G 6 G 7 G 8

G 9G10G11G12



R-1480

R-1481

R-1482

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

1. Disconnect the power supply cord, and then remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the leads to the primary of the power transformer.

5. Ensure that these leads remain isolated from other components and oven chassis by using insulation

tape.

6. After that procedure, re-connect the power supply cord.

7. Remove the outer case and check voltage between Pin No. 7 of the 4 pin connector (A) and the

common terminal of the relay RY1 on the control unit with an A.C. voltmeter.

The meter should indicate 120 volts, if not check oven circuit.

RY1 and RY2 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 Approx. 24.0V D.C. Oven lamp / Fan motor / Stirrer motor

RY2(COOK) Approx. 24.0V D.C. Power transformer

RY3 Approx. 24.0V D.C. Turntable motor

RY4 Approx. 24.0V D.C. Hood motor

RY5 Approx. 24.0V D.C. Hood motor (HIGH /LOW selection)

8.Disconnect the power supply cord, and then remove outer case.

9.Open the door and block it open.

10.Discharge high voltage capacitor.

11.Reconnect all leads removed from components during testing.

12.Re-install the outer case (cabinet).

13.Reconnect the power supply cord after the outer case is installed.

14.Run the oven and check all functions.

N RELAY TEST

O COMPU DEFROST TEST

(1) Place one cup of water in the center of the turntable tray in the oven cavity.

(2) Close the door, touch the " COMPU DEFROST " pad once and touch the Number pad "1" and touch

the Number pad "5". And then touch the "START" pad.

(3) The oven is in Compu Defrost cooking condition.

(4) The oven will operate as follows

WEIGHT 1ST STAGE 2ND STAGE 3RD STAGE 4TH STAGE

LEVEL TIME LEVEL TIME LEVEL TIME LEVEL TIME

0.5lbs 70% 35sec. 0% 40sec. 50% 30sec. 30% 35sec.

(5) If improper operation is indicated, the control unit is probably defective and should be checked.

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.

1. Foil pattern check and repairs.

1) Disconnect the power supply cord, and then remove outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Follow the troubleshooting guide given below for repair.

P FOIL PATTERN ON THE PRINTED WIRING BOARD TEST

R-1480

R-1481

R-1482

TEST PROCEDURES

PROCEDURE

LETTER COMPONENT TEST

STEPS OCCURRENCE CAUSE OR CORRECTION

1 Only pattern at "a" is broken. *Insert jumper wire J1 and solder.

2 Pattern at "a" and "b" are broken. *Insert the coil RCILF2003YAZZ between "c" and "d".

5) Make a visual inspection of the varistor.

Check for burned damage and examine

the transformer with a tester for the

presence of layer short-circuit (check

the primary coil resistance which is

approximately 192Ω ± 15%). If any

abnormal condition is detected, replace

the defective parts.

6) Reconnect all leads removed from components during testing.

7) Re-install the outer case (cabinet).

8) Reconnect the power supply cord after the outer case is installed.

9) Run the oven and check all functions.

2. Follow the troubleshooting guide given below, if indicator does not light up after above check and

repairs are finished.

1) Disconnect the power supply cord, and then remove outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Disconnect the leads to the primary of the power transformer.

5) Ensure that these leads remain isolated from other components and oven chassis by using

insulation tape.

6) After that procedure, re-connect the power supply cord.

7) Follow the troubleshooting guide given below for repair.

STEPS OCCURRENCE CAUSE OR CORRECTION

The rated AC voltage is not present between

1 Pin No. 7 of the 4-pin connector (A) and the Check supply voltage and oven power cord.

common terminal of the relay RY1.

2The rated AC voltage is present at primary Low voltage transformer or secondary circuit defective.

side of low voltage transformer. Check and repair.

8) Disconnect the power supply cord, and then remove outer case.

9) Open the door and block it open.

10) Discharge high voltage capacitor.

11) Reconnect all leads removed from components during testing.

12) Re-install the outer case (cabinet).

13) Reconnect the power supply cord after the outer case is installed.

14) Run the oven and check all functions.

D20 T1

d(470V)

VRS1

CN-A

AC(N) TTM

RY3

AC(H)

357 1

C100

(J1)

Q27

R-1480

R-1481

R-1482

TOUCH CONTROL PANEL ASSEMBLY

OUTLINE OF TOUCH CONTROL PANEL

3) Synchronizing Signal Circuit

The power source synchronizing signal is available in

order to compose a basic standard time in the clock

circuit. It incorporates a very small error because it works

on commercial frequency.

4) ACL Circuit

A circuit to generate a signals which resetting the LSI to

the initial state when power is applied.

5) Buzzer Circuit

The buzzer responds to signals from the LSI to emit

audible sounds (key touch sound and completion sound).

6) Door Sensing Switch

A switch to inform the LSI if the door is open or closed.

7) Relay Circuit

To drive the magnetron, fan motor, stirrer motor, turnta-

ble motor, hood motor, and light the oven lamp and hood

lamp.

8) Indicator Circuit

Indicator element is a Fluorescent Display.

Basically, a Fluorescent Display is a triode having a

cathode, a grid and an anode. Usually, the cathode of a

Fluorescent Display is directly heated and the filament

serves as cathode.

The Fluorescent Display has 8-digits, 15-segments are

used for displaying figures.

The touch control section consists of the following units

as shown in the touch control panel circuit.

(1) Key Unit

(2) Control Unit

The principal functions of these units and the signals com-

municated among them are explained below.

Key Unit

The key unit is composed of a matrix, signals generated in

the LSI are sent to the key unit through P00 - P07.

When a key pad is touched, a signal is completed through

the key unit and passed back to the LSI through R24 - R27

to perform the function that was requested.

Control Unit

Control unit consists of LSI, power source circuit, synchro-

nizing signal circuit, ACL circuit, buzzer circuit, relay circuit

and indicator circuit.

1) LSI

This LSI controls the key strobe signal, relay driving

signal for oven function and indicator signal.

2) Power Source Circuit

This circuit generates voltages necessary for the control

unit from the AC line voltage.

Symbol Voltage Application

VC -5.1V LSI(IC1)

VP -28V Fluorescent display tube : Grid

and anode voltage

VF1-VF2 2.7Vac Filament of fluorescent dis-

play tube

(VF1 to VF2 voltage)

R-1480

R-1481

R-1482

DESCRIPTION OF LSI

LSI(IZA876DR)

The I/O signals of the LSI(IZA876DR) are detailed in the following table.

Pin No. Signal I/O Description

1 VCC IN Connected to GND.

2 VEE IN Anode (segment) of Fluorescent Display illumination voltage: -31V.

Vp voltage of power source circuit input.

3 AVSS IN Power source voltage:-5V.

VC voltage of power source circuit input.

4 VREF IN Reference voltage input terminal.

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

5-6 AN7-AN6 IN Terminal not used.

7-9 AN5-AN3 IN Heating constant compensation terminal.

10 AN2 IN Input signal which communicates the door open/close information to LSI.

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

Door opened; "H" level signal(-5V).

11-12 AN1-AN0 IN Connected to GND(0V).

13 P55 OUT Terminal not used.

14 P54 OUT Oven lamp, Stirrer motor and Fan motor driving signal. (Square Waveform : 60Hz)

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

square waveform voltage is delivered to the

relay(RY1) driving circuit.

15 P53 OUT Turntable motor driving signal.

To turn on and off relay(RY3). "L" level: During

Turntable ON. "H" level: During Turntable OFF or

during the oven is off condition.

16 P52 OUT Terminal not used.

17 P51 OUT Magnetron high-voltage circuit driving signal.

To turn on and off the cook

relay(RY2). In P-HI operation, the

signals holds "L" level during mi-

crowave cooking and "H" level

while not cooking. In other cook-

ing modes (P-90,P-80,P-70,P-

60,P-50,P-40,P-30,P-20,P-10,P-

0) the signal turns to "H" level and

"L" level in repetition according to

the power level.

18 P50 OUT Terminal not used.

19 P47 OUT Hood lamp driving signal.

To turn on and off solid state relay(SSR1). "1"

level: During Hood lamp ON (WORK LIGHT level).

"2" level: During Hood lamp ON (NIGHT LIGHT

level). "H" level: During Hood lamp OFF.

20 P46 OUT Hood motor driving signal.

To turn on and off relay(RY9). "L" level: During Hood

motor ON. "H" level: During Hood motor OFF.

21 P45 OUT Hood motor high / low driving signal.

To turn on and off relay(RY5). "L" level: During Hood

motor high. "H" level: During Hood motor low. ON

OFF H : GND

During cooking

16.7 msec.

VARI-MODE ON TIME OFF TIME

P-HI (100% power) 32 sec. 0 sec.

P-90 (approx. 90% power) 30 sec. 2 sec.

P-80 (approx. 80% power) 26 sec. 6 sec.

P-70 (approx. 70% power) 24 sec. 8 sec.

P-60 (approx. 60% power) 22 sec. 10 sec.

P-50 (approx. 50% power) 18 sec. 14 sec.

P-40 (approx. 40% power) 16 sec. 16 sec.

P-30 (approx. 30% power) 12 sec. 20 sec.

P-20 (approx. 20% power) 8 sec. 24 sec.

P-10 (approx. 10% power) 6 sec. 26 sec.

P-0 (0% power) 0 sec. 32 sec.

AC

CURRENT

WORK

LIGHT

NIGHT

LIGHT

OFF H : GND

R-1480

R-1481

R-1482

22 P44 OUT Terminal not used.

23 P43 OUT Signal to sound buzzer.

A: key touch sound.

B: Completion sound.

C: When the temperature of the oven cavity reaches

the preset temperature in the preheating mode,

or when the preheating hold time (30 minutes) is

elapsed.

24 P42 IN Terminal not used.

25 INT1 IN Signal to synchronize LSI with commercial power source frequency.

This is the basic timing for all real time processing of LSI.

26 P40 IN Connected to VC.

27 RESET IN Auto clear terminal.

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

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

level.

28-29 P71-P70 OUT Terminal not used.

30 XIN IN Internal clock oscillation frequency setting input.

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

respect to XOUT terminal.

31 XOUT OUT Internal clock oscillation frequency control output.

Output to control oscillation input of XIN.

32 VSS IN Power source voltage:-5V.

VC voltage of power source circuit input.

33 P27 IN Signal coming from touch key.

When any one of G12 line keys on key matrix is touched, a corresponding signal will be

input into P27. When no key is touched, the signal is held at "L" level.

34 P26 IN Signal similar to P27.

When any one of G11 line keys on key matrix is touched, a corresponding signal will be

input into P26.

35 P25 IN Signal similar to P27.

When any one of G10 line keys on key matrix is touched, a corresponding signal will be

input into P25.

36 P24 IN Signal similar to P27.

When any one of G9 line keys on key matrix is touched, a corresponding signal will be input

into P24.

37-40 P23-P20 OUT Digit selection signal.

The relationship between digit signal and digit are as follows;

Digit signal .................................. Digit

P14................................................ 1st.

P15...............................................2nd.

P16............................................... 3rd.

P17................................................4th.

P20................................................5th.

P21................................................6th.

P22................................................7th.

P23................................................8th.

(ß : INTO signal)

Refer to the touch control panel circuit about the

relation between signals and digits. Normally,

one pulse is output in every synchronized signal

(ß) period, and input to the grid of the fluorescent

display.

Pin No. Signal I/O Description

H: GND

0.1 sec

2 sec

1 sec 1 sec

H : GND

L (-5V)

16.7 msec

GND

ß(60Hz)

P14

P15

P16

P17

P20

P21

P22

P23

R-1480

R-1481

R-1482

Pin No. Signal I/O Description

ß(60Hz)

GND

41-44 P17-P14 OUT Digit selection signal.

Signal similar to P23.

45-48 P13-P10 OUT Segment data signals.

The relation between signals and indicators are as follows:

Signal Segment Signal Segment

P13............... P15 P03 ................ P7

P12............... P14 P02 ................ P6

P11............... P13 P01 ................ P5

P10............... P12 P00 ................ P4

P07............... P11 P37 ................ P3

P06............... P10 P36 ................ P2

P05................. P9 P35 ................ P1

P04................. P8

(ß : INTO signal)

Refer to the touch control panel circuit about the relation between signals and indicators.

Normally, one pulse is output in every synchronized signal (ß) period, and input to the

anode of the fluorescent display.

49 P07 OUT Segment data signal. Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G8 line keys on key matrix is touched.

50 P06 OUT Segment data signal. Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G7 line keys on key matrix is touched.

51 P05 OUT Segment data signal. Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G6 line keys on key matrix is touched.

52 P04 OUT Segment data signal. Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G5 line keys on key matrix is touched.

53 P04 OUT Segment data signal. Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G4 line keys on key matrix is touched.

54 P02 OUT Segment data signal. Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G3 line keys on key matrix is touched.

55 P01 OUT Segment data signal. Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G2 line keys on key matrix is touched.

56 P00 OUT Segment data signal.

Signal similar to P13.

Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P27 - P24 terminal while one

of G1 line keys on key matrix is touched.

57-59 P37-P35 OUT Segment data signal. Signal similar to P13.

60-64 P34-P30 OUT Terminal not used.

R-1480

R-1481

R-1482

1. Precautions for Handling Electronic Components

This unit uses CMOS LSI in the integral part of the

circuits. When handling these parts, the following

precautions should be strictly followed. CMOS LSI have

extremely high impedance at its input and output

terminals. 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.

In order to protect CMOS LSI.

1) When storing and transporting, thoroughly wrap them in

aluminium foil. Also wrap all PW boards containing them

in aluminium foil.

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

figure and use grounded soldering iron and work table.

5) Re-connect the power supply cord after the outer case is

installed.

6) Run the oven and check all functions.

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

touch control panel and the oven itself is so short that the

two can't be separated.

For those models, check and 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, 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.

(2) Servicing the touch control panel with power supply

from an external power source:

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).

4. Servicing Tools

Tools required to service the touch control panel assembly.

1) Soldering iron: 30W

(It is recommended to use a soldering iron with a grounding

terminal.)

2) Oscilloscope: Single beam, frequency range: DC - 10MHz

type or more advanced model.

3) Others: Hand tools

5. Other Precautions

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

remove the aluminium foil applied for preventing static

electricity.

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 precision

is required.

SERVICING

approx. 1M ohm

ECB

Transistor

DTA123ES

KRA101M

KRC243M

2. Shapes of Electronic Components

3. Servicing of Touch Control Panel

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 available

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

external power source.

(1) Servicing the touch control panel with power supply

of the oven:

CAUTION:

THE HIGH VOLTAGE TRANSFORMER OF THE MI-

CROWAVE OVEN IS STILL LIVE DURING SERVICING

AND PRESENTS A HAZARD.

Therefore, before checking the performance of the touch

control panel,

1) Disconnect the power supply cord, and then remove

outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Disconnect the leads to the primary of the power

transformer.

5) Ensure that these leads remain isolated from other

components and oven chassis by using insulation tape.

6) After that procedure, re-connect the power supply cord.

After checking the performance of the touch control panel,

1) Disconnect the power supply cord.

2) Open the door and block it open.

3) Re-connect the leads to the primary of the power

transformer.

4) Re-install the outer case (cabinet).

R-1480

R-1481

R-1482

Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may

result in severe, possibly fatal, electric shock.

(Example)

High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..

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

operating the oven.

WARNING AGAINST HIGH VOLTAGE:

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

To prevent an electric shock, take the following pre-

cautions.

1. Before wiring,

1) Disconnect the power supply cord.

2) Open the door block it open.

3) Discharge the high voltage capacitor and wait for 60

seconds.

2. Don’t let the wire leads touch to the followiong parts;

1) High voltage parts:

Magnetron, High voltage transformer, High voltage

capacitor and High voltage rectifier assembly.

2) Hot parts:

Oven lamp, Magnetron, High voltage transformer

and Oven cavity.

WARNING FOR WIRING

1. Disconnect the power supply cord.

2. Visually check the door and cavity face plate for damage

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

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. Door does not close firmly.

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

3. The door gasket or seal is damaged.

4. The door is bent or warped.

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

6. There are defective parts in the microwave generating

and transmission assembly.

7. There is visible damage to the oven.

Do not operate the oven:

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.

3) Sharp edge:

Bottom plate, Oven cavity, Waveguide flange,

Chassis support and other metallic plate.

4) Movable parts (to prevent a fault)

Fan blade, Fan motor, Switch, Switch lever, Open

button.

3. Do not catch the wire leads in the outer case cabinet.

4. Insert the positive lock connector until its pin is locked

and make sure that the wire leads do not come off even

if the wire leads are pulled.

5. To prevent an error function, connect the wire leads

correctly, referring to the Pictorial Diagram.

Please refer to ‘OVEN PARTS, CABINET PARTS, CONTROL PANAL PARTS, DOOR PARTS’, when carrying out any of

the following removal procedures:

THE FOLLOWING ADJUSTMENTS OR COMPONENT REPLACEMENT CAN BE PERFORMED

WITHOUT REMOVING THE OVEN FROM THE WALL

1. Hood lamps, sockets and grease filter.

2. Oven lamp, base cover and hood lamp glass assembly.

3. Turntable motor.

4. Hood exhaust louver.

5. Control panel assembly or components

6. Stirrer cover and stirrer fan.

HOOD EXHAUST LOUVER REMOVAL

1. Disconnect the power supply cord.

2. Open the door and block it open.

3. Remove the one (1) screw holding the hood exhaust

louver to the oven cavity with the outer case cabinet.

Hood exhaust 

louver

Tab (left )

Tab (right)

Push

R-1480

R-1481

R-1482

REMOVAL OF OVEN FROM WALL (Two persons recommended to remove the oven)

1. Disconnect the power supply cord, and uncoil the power

supply cord.

2. Remove the turntable tray and support from the oven cavity.

3. Remove the one (1) screw holding the exhaust damper

assembly to the rear stay, and remove the exhaust

damper assembly by sliding it backward.

4. Remove the two (2) screws holding the oven (outer case

cabinet) to the top cabinet.

5. Remove the hood exhaust louver referring to "HOOD

EXHAUST LOUVER REMOVAL".

6. While supporting the front of the oven, unfasten the two

(2) unit mounting screws holding the oven to the unit

mounting plate.

7. Remove the oven by sliding it into the arms of the unit

mounting plate and pull the power cord out of the wall

cabinet.

8. The oven is now free and can be placed on the work

surface selected for servicing the oven.

9. Installation is the reverse of this procedure.

OUTER CASE REMOVAL

Remove the oven from the wall and proceed as follows;

1. Disconnect the power supply cord.

2. Open the door and block it open.

3. Remove one (1) screw holding the hood exhaust louver

to the oven, and pull it forward to remove by pushing the

right and left tabs of the hood exhaust louver. (Refer to

procedure of "HOOD EXHAUST LOUVER REMOVAL".)

4. Remove four (4) screws holding the rear stay to the hood

fan motor or the oven, and remove it.

5. Remove the four (4) screws from the rear of the outer

case cabinet.

6. Slide the outer case cabinet back about 1 inch (3 cm) to

free it from retaining clips on the cavity face plate.

7. Disconnect the three (3) pin connector of the power

supply cord from the wiring harness and remove the

power supply cord together with the outer case.

8. Discharge high voltage capacitor.

CAUTION: 1. DISCONNECT OVEN FROM POWER

SUPPLY BEFORE REMOVING OUTER

CASE.

2. DISCHARGE THE HIGH VOLTAGE

CAPACITOR BEFORE TOUCHING ANY

OVEN COMPONENTS OR WIRING.

POWER TRANSFORMER REMOVAL

1. Disconnect the power supply cord, remove the oven

from wall, and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer Case Removal".)

And proceed as follows.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove one (1) screw holding the hood duct to the oven

cavity front flange.

Disconnect the stop switch harness from the chassis

support and disconnect the wire leads from the fan motor.

6. Lift up the fan motor side of the hood duct.

7. Disconnect filament leads of transformer from the

magnetron and capacitor.

8. Disconnect high voltage leads of capacitor from the

transformer.

9. Disconnect wire leads from transformer.

10.Remove two (2) screws holding the transformer to right

base plate.

Re-install

1. Install by sliding the transformer on the right base plate

with its primary terminals toward the outer case.

2. Secure the transformer with two (2) screws to right base

plate.

3. Re-connect wire leads (primary and high voltage) to the

transformer and filament leads of transformer to

magnetron and high voltage capacitor. Refer to

"PICTORIAL DIAGRAM".

4. Re-install the hood duct holding the fan motor to the oven

cavity front flange with one (1) screw.

5. Reconnect the wire leads to the chassis support and the

fan motor, referring to "PICTORIAL DIAGRAM".

6. Re-install the outer case and check that oven is operating

properly.

CAUTION: MAKE SURE THE WIRE LEADS NEVER

TOUCH THE FAN BLADE.

4. Pull the hood exhaust louver from the oven cavity by

pushing the right and left tabs of the hood exhaust louver to remove.

5. Now, the hood exhaust louver is free.

HOOD FAN MOTOR, HOOD DUCT AND OVEN LAMP SOCKET REMOVAL

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the 6-pin connector of the hood fan motor

from the main wire harness located at the right edge of

the hood duct and release the snap band from the hood

duct.

5. Remove the hood fan motor from the hood duct by lifting

it up.

6. Now, the hood fan motor is free.

7. Remove one (1) screw holding the hood duct to the oven

cavity front plate.

8. Release the 6-pin connector and the 3-pin connector of

the main harness A from the hood duct.

9. Disconnect the wire leads from the fan motor and chassis

support, and release the wire leads from holes of the

R-1480

R-1481

R-1482

hood duct.

10.Remove the two (2) unit mounting screws from the

chassis support (right side) and the hood duct (left side).

11.Remove the one (1) screw holding the chassis support.

12.Remove the chassis support.

13.Remove the hood duct from the oven cavity by lifting it up

14.Screw the oven lamp off from the lamp socket.

15.Remove the lamp socket from the lamp angle.

16.Pull the wire leads from the oven lamp socket by pushing

the terminal hole of the oven lamp socket with the small

flat type screw driver.

17.Now, the oven lamp socket and the hood duct are free.

1. Disconnect the power supply cord , remove the oven

from wall and remove outer case (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal".)

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from the fan motor and the

chassis support, and release them from the holes of

hood duct.

5. Remove the one (1) screw holding the hood duct to the

oven cavity front plate, and lift up the fan motor side of the

hood duct.

6. Remove the one (1) screw holding the capacitor holder to

the hood intake duct.

7. Disconnect the high voltage wire leads of the high

voltage rectifier assembly from the magnetron.

MAGNETRON REMOVAL

8. Disconnect the filament lead of the transformer from the

magnetron.

9. Remove the power transformer from the right base plate,

referring to "POWER TRANSFORMER REMOVAL".

10.Carefully remove four (4) mounting screws holding the

magnetron to waveguide. When removing the screws

hold the magnetron to prevent it from falling.

11.Remove the magnetron from the unit with care so the

magnetron tube should not be hit by any metal object

around the tube.

CAUTION: WHEN REPLACING THE MAGNETRON, BE

SURE THE R.F. GASKET IS IN PLACE AND

MOUNTING SCREWS ARE TIGHTENED SE-

CURELY.

1. Disconnect the power supply cord , remove the oven

from wall and remove outer case (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal".)

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from the fan motor and the

chassis support, and release them from the holes of

hood duct.

5. Remove the one (1) screw holding the hood duct to the

oven cavity front flange, and lift up the fan motor side of

the hood duct.

6. Disconnect the high voltage wire leads with high voltage

rectifier from the magnetron.

7. Disconnect filament lead of the transformer from high

HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL

voltage capacitor.

8. Disconnect high voltage wire from capacitor.

9. Remove one (1) screw holding capacitor holder and high

voltage rectifier to the hood intake duct.

10.Disconnect the high voltage rectifier assembly from the

high voltage capacitor.

11.Now, the high voltage rectifier assembly is free.

12.Remove capacitor from the holder.

13.Now, the high voltage capacitor is free.

CAUTION: WHEN REPLACING THE HIGH VOLTAGE

RECTIFIER ASSEMBLY, THE GROUND SIDE

TERMINAL MUST BE SECURED FIRMLY

WITH A GROUNDING SCREW.

THERMAL CUT-OUT (CAVITY) REMOVAL

Oven lamp

socket

Terminal

Wire lead

Terminal hole

Flate type small

screw driver

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from the hood fan thermal

HOOD FAN THERMAL CUT-OUT REMOVAL

cut-out.

5. Remove one (1) screw holding the thermal cut-out to the

right base plate.

6. Remove the hood fan thermal cut-out from the right base

plate.

7. Now, the hood fan thermal cut-out is free.

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of "Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

R-1480

R-1481

R-1482

1. Disconnect the power supply cord, remove the oven

from wall and remove outer case (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal".)

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from the fan motor and the

chassis support.

5. Remove one (1) screw holding the hood duct to oven

cavity.

6. Release the wire leads from the hole of the hood duct.

7. Lift up the fan motor side of the hood duct.

8. Remove the two (2) screws holding the fan motor to the

hood duct.

9. Remove the fan blade from the fan motor shaft according

the following procedure.

10.Hold the edge of the rotor of the fan motor by using a pair

of groove joint pliers.

CAUTION:

* Make sure that any pieces do not enter the gap

between the rotor and the stator of the fan motor

because the rotor is easily shaven by pliers and

metal pieces may be produced.

* Do not touch the pliers to the coil of the fan motor

because the coil may be cut or injured.

* Do not disfigure the bracket by touching with the

pliers.

11.Remove the fan blade from the shaft of the fan motor by

pulling and rotating the fan blade with your hand.

12. Now, the fan blade will be free.

CAUTION:

* Do not reuse the removed fan blade because the

hole (for shaft) may be larger than normal.

13.Now, the fan motor is free.

Rear View

Side View

3. Discharge high voltage capacitor.

4. Remove two (2) unit mounting screws.

5. Remove the hood duct. (Refer to the procedure of "

HOOD FAN MOTOR, HOOD DUCT AND OVEN LAMP

SOCKET REMOVAL".

6. Straighten the tab holding the thermal cut-out to the top

plate of the oven cavity.

7 . Release the thermal cut-out (cavity) from the one slit of

the oven cavity top plate.

8. Disconnect the wire leads from the thermal cut-out

(cavity).

9. Now, the thermal cut-out (cavity) is free.

TEMPERATURE FUSE (MAGNETRON) REMOVAL

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove the hood fan motor and the hood duct from the

oven cavity, referring to the procedure of " HOOD FAN

MOTOR, HOOD DUCT AND OVEN LAMP SOCKET

REMOVAL".

5. Disconnect the wire leads from the temperature fuse

(Magnetron).

6. Remove the one (1) screw holding the temperature fuse

(Magnetron) to the oven cavity.

7. Now, the temperature fuse (Magnetron) is free.

COOLING FAN MOTOR REMOVAL

Gap

Rotor

Bracket

Stator

Groove joint pliers

Coil

Shaft

Axis

Stator

Rotor

These are the positions

that should be pinched

with pliers

Top of Oven Cavity

Waveguide

Thermal 

Cut-Out

(Cavity)

Thermal 

Cut-Out

Thermal 

Cut-Out

Tab

Slit

INSTALLATION

1. Install the fan blade to the fan motor shaft according to

the following procedure.

2. Hold the center of the bracket which supports the shaft

of the fan motor on the flat table.

3. Apply the screw lock tight into the hole (for shaft) of the

fan blade.

4. Install the fan blade to the shaft of fan motor by pushing

the fan blade with a small, light weight, ball peen hammer

or rubber mallet.

5. Install the fan motor to the hood duct with the two (2) screws.

CAUTION:

* Do not hit the fan blade strongly when installing

because the bracket may be disfigured.

* Make sure that the fan blade rotates smooth after

installation.

* Make sure that the axis of the shaft is not slanted.

NOTE: When the tab is broken or turned off, use the another

tab which is fixed near the slit when the new thermal

cut-out is replaced.

R-1480

R-1481

R-1482

1. Disconnect the power supply cord.

2. Open the door and block it open.

3. Remove the three (3) screws holding the base cover to

the oven cavity

4. Remove the base cover from the oven cavity by pulling

REMOVAL")

4. Lift the oven lamp cover up.

5. Now, the oven lamp and the socket are found.

6. Screw the oven lamp off from the lamp socket.

7. Now, the oven lamp is free.

TURNTABLE MOTOR REMOVAL

down and moving to the left slightly.

5. Disconnect the wire leads from the turntable motor.

6. Remove two (2) screws holding turntable motor to the

oven cavity.

7. Now the turntable motor is free.

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove the hood fan motor and the hood duct from the

oven cavity, referring to the procedure of " HOOD FAN

MOTOR, HOOD DUCT AND OVEN LAMP SOCKET

REMOVAL".

STIRRER MOTOR REMOVAL

5. Disconnect the wire leads from the stirrer motor.

6. Remove the two (2) screws holding the stirrer motor to

the waveguide of the oven cavity.

7. Remove the stirrer motor from the waveguide.

8. Now, the stirrer motor is free.

9. When installing the stirrer motor, the shaft of stirrer

motor must be inserted to the stirrer fan shaft. Refer to

the procedure of "STIRRER COVER AND STIRRER

FAN INSTALLATION".

1. Put the stirrer fan on the stirrer cover to match the stirrer

fan shaft to the center of the stirrer support.

2. Insert the shaft of stirrer fan to the shaft of stirrer motor.

3. Insert the cutout of stirrer cover to the tabs on the ceiling.

4. Install the stirrer cover to the oven cavity, and secure it

by one canoe clip.

STIRRER COVER AND STIRRER FAN INSTALLATION

1. Disconnect the power supply cord.

2. Remove one (1) screw holding the hood exhaust louver

to oven cavity front flange.

3. Remove the hood exhaust louver from the oven by

pushing the right and left tabs of the hood exhaust louver.

(Refer to procedure of "HOOD EXHAUST LOUVER

OVEN LAMP REMOVAL

1. Disconnect the power supply cord.

2. Open the door and block it open.

3. Remove one (1) screw holding the hood exhaust louver

to oven cavity front flange.

4. Remove the hood exhaust louver from the oven by

pushing the right and left tabs of the hood exhaust louver.

(Refer to procedure of "HOOD EXHAUST LOUVER

REMOVAL")

5. Remove one (1) screw holding the control panel to the

oven cavity front face plate.

6. Release the control panel from the oven cavity front face

plate by lifting it up.

7. Disconnect the wire leads from the relays RY1 and RY2.

CONTROL PANEL ASSEMBLY, CONTROL UNIT AND KEY UNIT REMOVAL

8. Disconnect the connectors CN-A, CN-B, CN-E and CN-

F from the control unit.

9. Remove the control panel assembly from the oven.

10.Now, the control panel assembly is free.

11.Disconnect the connector CN-G from the control unit.

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

key fixing plate.

13.Release the two (2) tabs holding the control unit to the

key fixing plate.

14.Now, the control unit is free.

15.Remove the one (1) screw holding the key fixing plate to

the control panel.

16.Release the four (4) tabs holding the key fixing plate to

Shaft

Stirrer Fan

Stirrer 

Cover

Canoe Clip

Stirrer Support

Shaft

Table Center of

bracket

6. Install the hood duct to the oven cavity with the one (1)

screw.

7. Re-install the wire leads to the hole of the hood duct.

8. Connect the wire leads to the fan motor and chassis

support, referring to the pictorial diagram.

9. Refer to procedure of "OUTER CASE REMOVAL". And

reverse their procedure. And re-install the outer case.

R-1480

R-1481

R-1482

the control panel.

17.Remove the key fixing plate from the control panel.

18.Tear the key unit from the key fixing plate.

19.Now, the key unit is free

NOTES FOR KEY UNIT REPLACEMENT

1. Do not reuse the torn key unit because the performance

of the adhesive becomes weak.

2. Before attaching a new key unit, wipe off remaining

adhesive on the key fixing plate surfaces completely with

a soft cloth soaked in alcohol.

3. When attaching the key unit to the key fixing plate, adjust

the upper edge and right edge of the key unit to the

correct position of key fixing plate.

4. Stick the key unit firmly to the key fixing plate by rubbing

with soft cloth not to scratch.

NOTES FOR NEW CONTROL UNIT REPLACEMENT

1. Before installation of the new CPU into the control panel,

grasp the middle section between thumb and finger,

bend the display board forward a until b breaks as

shown in step 1.

2. To remove the middle section push both sides of the

middle section towards d until c breaks as shown in

step 2.

NOTE: Discard the middle section.

3. After removing the middle section, bend the display

board 90˚, positioning the jumper wires into the notches

CN-G

LSI

Control Unit

Middle

section Break

point

Display

Board

Top edge of the display board

Middle

Section

Jumper

wires

cdJumper

wires

Notches Control 

panel Locator pin

Clip (F)

Clip (E)

POSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVAL

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Push the lever of positive lock® connector.

5. Pull down on the positive lock® connector.

CAUTION: WHEN CONNECTING THE POSITIVE LOCK®

CONNECTORS TO THE TERMINALS, IN-

STALL THE POSITIVE LOCK® SO THAT THE

LEVER FACES YOU

Terminal

Push

Pull down

Lever

Positive lock®

connector

of the display board as shown in step 3.

4. Insert the bottom edge of the display board under the tab

of control panel as shown in step 4.

5. Place the top edge of the display board on the clip (F).

And press the display board downward as shown in step

4. (Holes in middle of display board should be positioned

into locator pins.)

6. After installing display board, press the CPU downward

90˚ until CPU is locked into place by the clips.

7. Hold the CPU with the four (4) screws.

8. After installing CPU, make sure jumper wires are not

bent, touching or broken.

Positive lock® connector

STEP 1 STEP 2 STEP 3 STEP 4

DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove the control panel assembly, referring to the

R-1480

R-1481

R-1482

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove the control panel assembly, referring to the

procedure of "CONTROL PANEL ASSEMBLY ,

CONTROL UNIT AND KEY UNIT REMOVAL".

If the door sensing switch, secondary interlock switch and

monitor switch do not operate properly due to a

misadjustment, the following adjustment should be made.

5. Loosen the two (2) screws holding latch hook to the oven

cavity front flange.

6. With door closed, adjust latch hook by moving it back and

forth, and up and down. In and out play of the door

allowed by the upper and lower position of the latch hook

should be less than 0.5mm. The vertical position of the

latch hook should be adjusted so that the door sensing

switch and secondary interlock switch are activated with

the door closed. The horizontal position of the latch hook

should be adjusted so that the monitor switch is activated

with the door closed.

7. Secure the screws with washers firmly.

8. Check all of the switches operation. If any switch has not

activated with the door closed, loosen screw and adjust

the latch hook position.

After adjustment, check the following.

1. In and out play of door remains less than 0.5mm when in

DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT

DOOR REPLACEMENT

DOOR ASSEMBLY REMOVAL

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove the hood exhaust louver from the oven cavity by

pushing the right and left tabs of the hood exhaust louver.

(Refer to the procedure of "HOOD EXHAUST LOUVER

REMOVAL".)

5. Insert a putty knife (thickness of about 0.5mm) into the

gap A between the door stopper and the choke cover

as shown in Figure C-3 to free engaging parts.

6. Lift up the door stopper.

7. Now, the door stopper is free from the door assembly.

8. Lift up the door assembly to release the upper and lower

door hinge pins from the upper and lower oven hinges.

9. Now, the door assembly is free.

Note: When the individual parts are replaced, refer to

"Door Disassembly".

DOOR ASSEMBLY RE-INSTALL

1. On re-installing door, insert the lower oven hinge to lower

door hinge pin.

2. Insert the upper oven hinge to the upper door hinge pin.

3. Shut the door (close the contacts of interlock switches).

4. Make sure upper and lower oven hinges are inserted into

the upper an lower door hinge pins.

5. Make sure the door is parallel with oven face lines (left

and upper side lines) and door latch heads pass through

the latched position. First check upper position of latch

hook, pushing and pulling upper portion of door toward

the oven face. Then check lower portion of the latch

hook, pushing and pulling lower portion of the door

toward the oven face. Both results (play in the door)

should be less than 0.5mm.

2. The door sensing switch and secondary interlock switch

interrupt the circuit before the door can be opened.

3. Monitor switch contacts close when door is opened.

4. The contact of door sensing switch and secondary

interlock switch open within 1.2mm gap between right

side of cavity face plate and door when door is open.

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

around door with an approved microwave survey meter.

(Refer to Microwave Measurement Procedure.)

Figure C-1. Latch Switch Adjustments

procedure of "CONTROL PANEL ASSEMBLY ,

CONTROL UNIT AND KEY UNIT REMOVAL".

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

oven cavity front flange.

6. Remove the latch hook from the oven cavity front flange.

7. Disconnect the wire leads of each switch.

8. Remove each switch from the latch hook by pushing the

one (1) stopper tub holding each switch.

9. Now, each switch is free.

Re-install

1. Re-install each switch in its place. The secondary interlock

switch is in the lower position, door sensing switch is in

the upper position and the monitor switch is in the middle

position.

2. Re-connect wire leads to each switch. Refer to pictorial

diagram.

3. Secure the latch hook (with two (2) mounting screws) to

oven cavity front flange.

4. Make sure that the monitor switch is operating properly

and check continuity of the monitor circuit. Refer to

chapter "Test Procedure" and "Adjustment procedure".

Secondary

Interlock

Switch

Monitor

Switch

Monitor

Fuse

Door

Sensing

Switch

Latch

Hook

Door

Latch

Heads

R-1480

R-1481

R-1482

latch holes correctly.

6. Re-install the door stopper to the door assembly.

7. Re-install the hood exhaust louver to the oven cavity

front face plate.

Note: After any service to the door;

(A) Make sure that door sensing switch and secondary

interlock switch are operating properly. (Refer to

chapter "Test Procedures".)

(B) An approved microwave survey meter should be

used to assure compliance with proper microwave

radiation emission limitation standards.

After any servicing, make sure of the following :

1. Door latch heads smoothly catch latch hook through

latch holes and that latch head goes through center of

latch hole.

2. Deviation of door alignment from horizontal line of cavity

face plate is to be less than 1.0mm.

3. Door is positioned with its face pressed toward cavity

face plate.

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

around door with an approved microwave survey meter.

(Refer to Microwave Measurement Procedure.)

Note: The door on a microwave oven is designed to

act as an electronic seal preventing the leakage

LATCH SPRING, LATCH HEAD AND DOOR PANEL

13.Release the latch spring from the tab of the latch head

and tab of the door frame.

14.Release the latch head from the door frame.

15.Now, the latch spring, latch head and door frame are

free.

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove the hood exhaust louver from the oven cavity by

pushing the right and left tabs of the hood exhaust louver.

(Refer to the procedure of "HOOD EXHAUST LOUVER

REMOVAL".)

5. Remove door assembly, refer to "Door Replacement".

Replacement of door components are as follows:

6. Place door assembly on a soft cloth with latches facing

up.

Note: As the engaging part of choke cover and door frame

are provided at 15 places, do not force any particular

part.

CHOKE COVER

7. Insert a putty knife (thickness of about 0.5mm) into the

gap A between the choke cover and door stopper and

between the choke cover and the door frame as shown

Figure C-3 to free engaging parts.

8. Pry the principles of the lever and lift up the choke cover

by inserting a putty knife in order shown in Figure C-3.

9. Now choke cover is free from door panel and door frame.

DOOR FRAME

10.Remove six (6) screws holding the door panel and the

door handle to the door frame assembly.

11.Release the door frame assembly from the door panel.

NOTE: It is easier to release the engaging parts of the upper

or lower door hinge pin side at first.

12.Now, door frame assembly is free.

of microwave energy from oven cavity during

cook cycle. This function does not require that

door be air-tight, moisture (condensation)-tight

or light-tight. Therefore, occasional appearance

of moisture, light or sensing of gentle warm air

movement around oven door is not abnormal

and do not of themselves indicate a leakage of

microwave energy from oven cavity.

Figure C-2. Door Replacement and adjustment

DOOR DISASSEMBLY

Figure C-3. Door Disassembly

DOOR GLASS

16.Remove the glass stopper from the door frame by

releasing the tab of door frame.

17.At first, slide the door glass toward the glass stopper

side, and then slide it up. And release it from the right and

lower long tabs of the door frame.

18.Release the door glass from the upper long tab of the

door frame.

19.Release the door glass from the long tabs of the door

frame.

20.Now, the door glass is free.

Upper Door

Hige Pin

Upper 

Oven

Hige

Lower 

Oven Hige

Lower Door

Hige Pin

RE-INSTALL

Door Stopper

Door assembly

Latch

Heads

Hood Exhaust Louver

Tab

Choke Cover

Door Frame

Door Stopper

Putty Knife

R-1480

R-1481

R-1482

123

Figure S-1. Pictorial Diagram

HIGH

VOLTAGE

RECTIFIER

HIGH VOLTAGE

CAPACITOR

HIGH VOLTAGE

WIRE A

HIGH VOLTAGE COMPONENTS

POWER 

TRANSFORMER

Power Supply

cord 120V 60Hz

WHT

GRN

BLK

WHT

GRN

BLK

CAVITY

THERMAL

CUT-OUT

MAGNETRON

TEMPERATURE 

FUSE

WHT

RED

BLK

RED

BLK

FAN

MOTOR

TURNTABLE

MOTOR

GRY

ORG

WHT

ORG

ORG RED

WHT

ORG

BLK

WHT

HOOD LAMPS

& SOCKETS

Blue 

Marking

Blue Marking

OVEN LAMP & SOCKET

to Chassis Support CN-E

GRY

WHT

BLU

WHT

BLK

SECONDARY

INTERLOCK

SWITCH

N.O.

N.C.

COM.

MONITOR

SWITCH

FUSE & HOLDER

N.O.

GRN

RED

N.O.

COM.

DOOR SENSING SWITCH

CN-B

CN-E

CN-F

CN-E

CN-A

357

PRIMARY

INTERLOCK

RELAY

RY1RY2

RY4

RY1

N.O.

RY1

COM.

RY2

N.O.

RY2

COM.

GRY

C100

HOOD FAN MOTOR

STIRRER MOTOR

WHT

RED

YLW

BLU

BLK

WHT

RED

YLW

BLU

BLK

RED

GRN

YLW

WHT

BLK

RED

CN-A

W

H

G

R

HOOD FAN

THERMAL

CUT-OUT

RED

WHT

RED

REDRED

ORG

RED

ORG

GRN

to Right Base Plate

GRN

BLK

RED

ORG

WHT

9ORG

CN-B

IC1

IC2

COM.

RY2:

CN-G

RY5

RED

BLK

RED

ORG

BLK RED

WHT

RED

MAGNETRON

W

H

R

E

WHT

R-1480

R-1481

R-1482

123

Figure S-2. Control Panel Circuit

–

A 7

VRS1

(J1)

D20

R110 R110 47 1/2w

C110 0.033µ/250v

C110

D25D26D27D28

D1-D4

11ES1

Q20

KRA101M

Q24

KRA101M

R20

1k 1/2w

RY4

RY5

RY1

RY2

NO NC

RY3

Q25

KRA101M

Q26

KRA101M

Q28

KRA101M

Q30

KRA101M

Q27

KRC243M

Q40

KRA101M

MOTOR RUN

CAPACITOR

TURNTABLE

MOTOR

HOOD LAMP

HOOD THERMO

HOOD MOTOR



COM(H)

FAN MOTOR

OVEN LAMP

STIRRER MOTOR

MICRO

HIGH



LOW



COM

Q4

DTA123ES

C10 0.1µ/50v

C73 330pF

C72 330pF

C71 330pF

C70 330pF

R10 3.3 1/2w

Note

Fluorescent display tube

VF1

MIX CONV COOK LBS KG

TURNTABLE

OFF HELP

1. 2 F

33. 32 F

VF2

Q3

KRA101M

R4 510 1/2wR3 750 1w

VCC 1

32 33

64 P30

P31

P32

P33

P34

P35

P36

P37

P00

P01

P02

P03

P04

P05

P06

P07

P10

P11

P12

P13

P14

P15

P16

P17

P20

P21

P22

P23

P24

P25

P26

P27

VEE

AVSS

VREF

AN7

AN6

AN5

AN4

AN3

AN2

AN1

AN0

P55

P54

P53

P52

P51

P50

P47

P46

P45

P44

P43

P42

INT1

P40

RESET

P71

P70

XIN

XOUT

VSS

C100

7µ/230v

D2 D3

SSR1

C30

R31 4.7k

DOOR

SWITCH

CF1

CST4.00MGW

CLOCK

KITCHEN

TIMER STOP

CLEAR

POWER

LEVEL

MINUTE

PLUS

NIGHT

LIGHT

FAN

HI / LO

TURN

TABLE

ON / OFF



CUSTOM

HELP

POPCORN

BREAK

FAST

COMPU

COOK

COMPU

DEFROST

SNACKS

&

REHEAT

WORK

LIGHT

172

D30

S101D01

13 3

10G471K

C1 0.1µ/50v

C20 10µ/35v

C21 0.1µ/50v

R30 15k

D31

(J2)

(J4)

(J6)

(J3)

(J5)

(J7)

IC1

IZA876DR

(J15)

C9

0.1µ

/50v

SP40

C2 1000µ/35v

C6 10µ/35v

ZD1 HZ6A3

ZD3 HZ5C2

ZD4

HZ4A2

R7

4.7k

R8

4.7k

R1 4.3k 1/2w

R70 3.3k

R71 3.3k

R72 3.3k

R73 3.3k

D71 R77 3.3k

D72 R78 3.3k

D73 R79 3.3k

D74 R80 3.3k

D752 R81 3.3k

D76 R82 3.3k

D77 R83 3.3k

R40 3.3k

R91 100k

R92 100k

R93 100k

4 P1

5 P2

6 P3

7 P4

8 P5

9 P6

10 P7

11 P8

12 P9

13 P10

15 P11

16 P12

17 P13

19 P14

20 P15

22 1G

23 2G

24 3G

25 4G

26 5G

27 6G

28 7G

29 8G

A 1

A 3

A 5

E 1 E 2

G 1 G 2 G 3 G 4 G 5 G 6 G 7 G 8

G12 G11 G10 G 9

B 9

B 7

B 5

B 3

B 1

COM

N.O.



START

TOUCH ON

: IF NOT SPECIFIED 1/8w ± 5%

: IF NOT SPECIFIED 1SS270A

: IF NOT SPECIFIED 0.01µF/16v

R-1480

R-1481

R-1482

123

Figure S-3. Printed Wiring Board

DIP

,BFB

R10

C6 C10

(ZD2)

S1 S2

(R2)

SP40

D25

D20

RY4

RY5

(470V)

VRS1

(CN - A)

CN - A

AC(N) TTM

RY3

AC(H)

OLMICRO FM

ZD3

ZD1

ZD4

CF1

(J15)

R40

(J11)

(J10)

(R76) (R100)

(D70)

D71

D72

D73

D74

D75

D76

R77

R79

R80

R81

R82

R70

R71

R72

R73

3 1

Q30

Q20

Q40 Q3

R83

R78

D77

(IC2)

4356

357 1

753 19

R30

C110

R110

Q26

SSR1

Q25

Q24

D30

Q28

(Q1)

IC1

(J12)

(J13)

(J14)

C72

C30

C70

C71C73

QKITPB027MRE0

R91

R92

R93 (J6)

(J4)

(J2)

(J5)

(J7)

(J3)

CN - G

CN - E

R20

D31

C21

R31

C100

C20

RY2

(J1)

RY1

Q27

D26

D28

D27

(CN - B)

CN - B

HOOD

LAMP HOOD

THERM HOOD

MHIGH HOOD

MLOW

COM

(CN - G)

112

R-1480

R-1481

R-1482

PARTS LIST

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

The parts marked “*” are used in voltage more than 250V. "§" MARK: PARTS DELIVERY SECTION

ELECTRIC PARTS

1- 1 FH-DZB012MRY0 M High voltage rectifier assembly 1 AK

1- 2 RC-QZA173WRE0 M High voltage capacitor 1 AR

1- 3 QFS-TA013WRE0 M Temperature fuse 150˚C (Magnetron) 1 AG

1- 4 RMOTDA182WRE0 M Turntable motor 1 AQ

1- 5 RMOTDA214WRE0 M Stirrer motor 1 AQ

1- 6 RTHM-B005MRE0 M Thermal cut-out N.O. 60˚C (Hood Fan) 1 AG

1- 7 RTRN-B055MRE0 M Power transformer 1 BE

1- 8 RV-MZA280WRE0 M Magnetron 1 BD

1- 9 QFSHDB003MRE0 M Fuse holder 1 AD

1-10 QSW-MA110WRE0 M Secondary interlock and door sensing switches 2 AE

1-11 FFS-BA016/KIT M Monitor switch with fuse assembly 1 AF

1-12 FACCDB011MRE0 M Power supply cord 1 AP

1-13 QSOCLB006MRE0 M Oven lamp socket 3 AE

1-14 FMOTEA366WRK0 M Hood fan motor 1 BE

1-15 RMOTEA346WRE0 M Fan motor 1 AR

1-16 RLMPTA071WRE0 M Oven lamp 3 AG

1-17 RTHM-A080WRE0 M Thermal cut-out 145˚C (Cavity) 1 AG

CABINET PARTS

2- 1 LSTY-B021MRP0 M Rear stay 1 AF

2- 2 PDIF-B018MRF0 M Hood exhaust louver [R-1480] 1 AT

2- 2 PDIF-B019MRF0 M Hood exhaust louver [R-1481] 1 AT

2- 2 PDIF-B020MRF0 M Hood exhaust louver [R-1482] 1 AT

2- 3 GDAI-B045MRP0 M Right base plate 1 AM

2- 4 PCUSUB040MRP0 M Base cover cushion 1 AA

2- 5 GCABUB084MRP0 M Outer case cabinet [R-1480] 1 BA

2- 5 GCABUB085MRP0 M Outer case cabinet [R-1481] 1 BB

2- 5 GCABUB086MRP0 M Outer case cabinet [R-1482] 1 BC

2- 6 TMAPCB052MRR0 M Schematic diagram 1 AB

2- 7 FANGKB009MRY0 M Hood lamp glass assembly [R-1480] 1 AN

2- 7 FANGKB010MRY0 M Hood lamp glass assembly [R-1481] 1 AM

2- 7 FANGKB011MRY0 M Hood lamp glass assembly [R-1482] 1 AM

2-7-1 LANGQB016MRP0 M Hood lamp glass angle [R-1480] 1 AG

2-7-1 LANGQB020MRP0 M Hood lamp glass angle [R-1481] 1 AG

2-7-1 LANGQB027MRP0 M Hood lamp glass angle [R-1482] 1 AG

2-7-2 PGLSPB004MRE0 M Hood lamp glass 1 AH

2- 8 PCOVPB064MRt0 M Base cover [R-1480] 1 AY

2- 8 PCOVPB066MRt0 M Base cover [R-1481] 1 AY

2- 8 PCOVPB067MRt0 M Base cover [R-1482] 1 AY

CONTROL PANEL PARTS

3- 1 DPWBFB081MRU0 M Control unit 1 BL

3- 1A QCNCMA447DRE0 M 4-pin connector CN-A 1 AA

3- 1B QCNCMA448DRE0 M 5-pin connector CN-B 1 AA

3- 1C QCNCMA275DRE0 J 2-pin connector CN-E 1 AB

3- 1D QCNCWA030DRE0 J 12-pin connector CN-G 1 AE

3- 1E RV-KXB004MRE0 M Fluorescent display tube 1 AS

3- 1F PTPEHB010MRE0 M Tape 2mm 1 AB

C1 RC-KZA087DRE0 J Capacitor 0.1 uF 50V 1 AB

C2 VCEAB31VW108M J Capacitor 1000 uF 35V 1 AF

C5 VCKYD11CY103N J Capacitor 0.01 uF 16V 1 AH

C6 VCEAB31VW106M J Capacitor 10 uF 35V 1 AB

C7-8 VCKYD11CY103N J Capacitor 0.01 uF 16V 2 AH

C9-10 RC-KZA087DRE0 J Capacitor 0.1 uF 50V 2 AB

C20 VCEAB31VW106M J Capacitor 10 uF 35V 1 AB

C21 VCEAB31HW104M J Capacitor 0.1 uF 50V 1 AM

C30 VCKYD11CY103N J Capacitor 0.01 uF 16V 1 AH

C70-73 VCKYD11HB331K J Capacitor 330 pF 50V 4 AA

C100 RC-QZB014MRE0 M Capacitor 7 uF 230V 1 AK

C110 RC-QZB019MRE0 M Capacitor 0.033 uF 250V 1 AC

CF1 RCRS-A010DRE0 J Ceramic resonator (CST4.00MGW) 1 AD

D1-4 VHD11ES1///-1 J Diode (11ES1) 4 AB

D20 VHD1SS270A/-1 J Diode (1SS270A) 1 AA

D25-28 VHD1SS270A/-1 J Diode (1SS270A) 4 AA

D30-31 VHD1SS270A/-1 J Diode (1SS270A) 2 AA

D71-77 VHD1SS270A/-1 J Diode (1SS270A) 7 AA

REF. NO. PART NO. § DESCRIPTION Q'TY CODE

∆*

R-1480

R-1481

R-1482

REF. NO. PART NO. § DESCRIPTION Q'TY CODE

IC1 RH-IZA876DRE0 J LSI 1 AW

Q3 VSKRA101M//-3 J Transistor (KRA101M) 1 AB

Q4 VSDTA123ES/-3 J Transistor (DTA123ES) 1 AA

Q20 VSKRA101M//-3 J Transistor (KRA101M) 1 AB

Q24-26 VSKRA101M//-3 J Transistor (KRA101M) 3 AB

Q27 VSKRC243M//-3 J Transistor (KRC243M) 1 AB

Q28 VSKRA101M//-3 J Transistor (KRA101M) 1 AB

Q30 VSKRA101M//-3 J Transistor (KRA101M) 1 AB

R1 VRD-B12HF432J J Resistor 4.3k ohm 1/2W 1 AH

R2 VRD-B12EF152J J Resistor 1.5k ohm 1/4W 1 AA

R3 VRS-B13AA751J J Resistor 750 ohm 1W 1 AH

R4 VRD-B12HF511J J Resistor 510 ohm 1/2W 1 AB

R7-8 VRD-B12EF472J J Resistor 4.7k ohm 1/4W 2 AA

R10 VRD-B12HF3R3J J Resistor 3.3 ohm 1/2W 1 AH

R20 VRD-B12HF102J J Resistor 1k ohm 1/2W 1 AA

R30 VRD-B12EF153J J Resistor 15k ohm 1/4W 1 AA

R31 VRD-B12EF472J J Resistor 4.7k ohm 1/4W 1 AA

R40 VRD-B12EF332J J Resistor 3.3k ohm 1/4W 1 AA

R70-73 VRD-B12EF332J J Resistor 3.3k ohm 1/4W 4 AA

R77-83 VRD-B12EF332J J Resistor 3.3k ohm 1/4W 7 AA

R91-93 VRD-B12EF104J J Resistor 100k ohm 1/4W 3 AA

R110 VRS-A12HA470J J Resistor 47 ohm 1/2W 1 AH

RY1-2 RRLY-A113DRE0 M Relay (DU24D1-1PR(M)) 2 AG

RY3-4 RRLY-A080DRE0 J Relay (OJ-SH-124LM) 2 AG

RY5 RRLY-A112DRE0 M Relay (VE24HSE-K) 1 AH

SSR1 RH-SZA009DRE0 M Solid state relay 1 AG

SP40 RALM-A014DRE0 J Buzzer (PKM22EPT) 1 AG

T1 RTRNPB014MRE0 M Transformer 1 AM

VRS1 RH-VZA032DRE0 J Varistor (10G471K) 1 AE

ZD1 VHEHZ6A3///-1 J Zener diode (HZ6A-3) 1 AC

ZD3 VHEHZ5C2///-1 J Zener diode (HZ5C-2) 1 AA

ZD4 VHEHZ4A2///-1 J Zener diode (HZ4A-2) 1 AA

3- 2 FPNLCB205MRK0 M Control panel sub. assembly [R-1480] 1 AZ

3- 2 FPNLCB211MRK0 M Control panel sub, assembly [R-1481] 1 AZ

3- 2 FPNLCB212MRK0 M Control panel sub, assembly [R-1482] 1 AZ

3- 2-1 FUNTKB153MRE0 M Key unit [R-1480] 1 AU

3- 2-1 FUNTKB159MRE0 M Key unit [R-1481] 1 AU

3- 2-1 FUNTKB160MRE0 M Key unit [R-1482] 1 AU

3- 2-2 GMADIB030MRF0 M Display window 1 AF

3- 3 XEPSD30P10XS0 M Screw; 3mm x 10mm 5 AB

OVEN PARTS

4- 1 FFTA-B003MRK0 M Exhaust damper assembly 1 AH

4- 2 FROLPB024MRK0 M Turntable support assembly 1 AK

4- 3 NTNT-A090WRE0 M Turntable tray 1 AN

4- 4 LANGKB010MRP0 M Capacitor holder 1 BB

4- 5 FCOVPB012MRY0 M Stirrer cover assembly 1 AK

4- 6 FFAN-B006MRK0 M Stirrer fan assembly 1 AL

4- 7 ************* M Oven cavity (Not replaceable part) 1 --

4- 8 PPACGB014MRF0 M Turntable motor packing 1 AA

4- 9 PHOK-B017MRF0 M Latch hook 1 AG

4-10 LANGTB036MRP0 M Unit mounting plate 1 AP

4-11 NFANPB001MRE0 M Fan blade 1 AC

4-12 LBSHC0037WRE0 M Cord bushing 1 AB

4-13 PCOVPB065MRP0 M Oven lamp cover 1 AD

4-14 PDUC-B077MRP0 M Hood intake duct 1 AG

4-15 PCUSUB039MRP0 M Hood intake duct cushion 2 AA

4-16 PFILWB005MRP0 M Lamp filter 1 AB

4-17 PSKR-B012MRP0 M Magnetron air guide 1 AB

4-18 LANGTB040MRP0 M Chassis support 2 AE

4-19 PDUC-B078MRF0 M Hood duct 1 AX

4-20 PCUSUB043MRP0 M Hood duct cushion 1 AB

4-21 LSTPPB031MRF0 M Door stopper 1 AC

4-22 PCUSUB045MRP0 M Cushion 1 AE

DOOR PARTS

5 CDORFB203MRK0 M Door assembly [R-1480] 1 BD

5 CDORFB205MRK0 M Door assembly [R-1481] 1 BE

5 CDORFB206MRK0 M Door assembly [R-1482] 1 BE

5- 1 FDORFB060MRT0 M Door panel assembly 1 AX

5- 2 FCOV-B125MRK0 M Door frame assembly [R-1480] 1 AS

5- 2 FCOV-B127MRK0 M Door frame assembly [R-1481] 1 AS

5- 2 FCOV-B128MRK0 M Door frame assembly [R-1482] 1 AS

∆

R-1480

R-1481

R-1482

REF. NO. PART NO. § DESCRIPTION Q'TY CODE

5-2-1 PGLSPB012MRE0 M Front door glass [R-1480] 1 AQ

5-2-1 PGLSPB014MRR0 M Front door glass [R-1481] 1 AQ

5-2-1 PGLSPB013MRR0 M Front door glass [R-1482] 1 AQ

5-2-2 LSTPPB030MRF0 M Latch head 1 AC

5-2-3 LSTPPB032MRF0 M Glass stopper 1 AC

5-2-4 MSPRTA046WRE0 M Latch spring 1 AB

5- 3 GCOVHB035MRF0 M Choke cover 1 AG

5- 4 PSHEPB024MRE0 M Sealer film 1 AF

5- 5 JHNDPB007MRF0 M Door handle [R-1480] 1 AK

5- 5 JHNDPB008MRF0 M Door handle [R-1481] 1 AK

5- 5 JHNDPB009MRF0 M Door handle [R-1482] 1 AK

5- 6 XCPSD40P08000 M Screw : 4mm x 8mm 6 AA

MISCELLANEOUS

6- 1 CFZK-B131MRK0 M Installation material assembly 1 AM

6-1-1 LBSHC0040MRE0 M Grommet 1 AC

6-1-2 LX-BZ0195WRE0 M Toggle screw 4 AC

6-1-3 LX-MZ0001WRE0 M Cord holder 1 AC

6-1-4 XBRSD50P60000 M Screw : 5mm x 60mm 2 AC

6-1-5 XOTSD40P12000 M Screw : 4mm x 12mm 1 AA

6-1-6 XTSSD50P35000 M Screw : 5mm x 35mm 6 AA

6-1-7 XWHSD50-16300 M Washer 2 AA

6- 2 TINSEB177MRR0 M Installation instruction 1 AB

6- 3 TINSEB178MRR0 M Operation manual 1 AD

6- 4 TINSKB047MRR0 M Top template 1 AC

6- 5 TINSKB048MRR0 M Wall template 1 AB

6- 6 QW-QZB023MRE0 M High voltage wire A 1 AD

6- 7 FW-VZB145MRE0 M Main harness A 1 AU

6- 8 TCAUAA025WRR0 M Caution label 2 AA

6- 9 TCAUAB015MRR0 M Monitor caution label 1 AA

6-10 TCAUAB005MRR0 M DHHS caution label 1 AB

6-11 FW-VZB149MRE0 M Stop switch harness 1 AM

6-12 PFIL-B004MRE0 M Chacoal filter 1 AH

6-13 PFIL-B002MRE0 M Grease filter 1 AF

6-14 PCLIC0020MRE0 M Canoe clip 1 AA

SCREWS,NUTS AND WASHERS

7- 1 XCPSD40P08000 M Screw : 4mm x 8mm 3 AA

7- 2 XOTSF40P12000 M Screw : 4mm x 12mm [R-1480] 4 AB

7- 2 XOTSE40P12000 M Screw : 4mm x 12mm [R-1481] 4 AA

7- 2 XOTSD40P12000 M Screw : 4mm x 12mm [R-1482] 4 AA

7- 3 XOTSD40P12000 M Screw : 4mm x 12mm 24 AA

7- 4 XBTSD40P08000 M Screw : 4mm x 8mm 2 AA

7- 5 LX-CZA038WRE0 M Special screw 4 AA

7- 6 LX-CZ0052WRE0 M Special screw 2 AA

7- 7 LX-BZ0081YBE0 M Screw : 4mm x 8mm 5 AA

7- 8 XCPSD30P08000 M Screw : 4mm x 8mm 4 AA

7- 9 LX-BZB012MRE0 M Unit mounting screw 2 AD

HOW TO ORDER REPLACEMENT PARTS

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

1. MODEL NUMBER 2. REF. NO. 3. PART NO. 4. DESCRIPTION

Order Parts from the authorized SHARP parts Distributor for your area.

Defective parts requiring return should be returned as indicated in the Service Policy.

∆

R-1480

R-1481

R-1482

123

OVEN AND CABINET PARTS 4-1

1-12

7-3

2-1

2-5

4-13

4-19

2-6

7-4

7-3

6-10

7-5

7-3

7-1 1-161-13

7-8

7-3

1-17

4-18

7-3

7-9

7-8

4-15

1-10

7-1

4-9

1-10

1-9

4-22

7-6

7-7

1-8

4-17

7-8

2-3

2-2

4-6

4-5

4-3 6-13

2-8

1-2

4-14

4-18

7-3

6-13

4-2

1-16

1-13

6-14

4-10

7-5

4-11

1-3

1-15

4-12

7-3

4-7

4-8

1-4

1-6

1-7

7-8

4-4

1-5

1-3

6-8

7-3

4-20

1-11

7-3

1-1

7-2

2-4

2-7-1

2-7-2

7-2

2-7

6-9

6-8

4-16

6-12

1-14

R-1480

R-1481

R-1482

123

6-6

6-7

6-11

6-1

5-6

5-4

5-3

4-21

5-1

5-2-1

5-2

5-5

5-6

6-1-1

5-2-4

5-2-2

5-2-3

6-1-2

6-1-3 6-1-7

6-1-5

6-1-6

6-1-4

3-2-2

3-2-1

3 - 3

3 - 3

3 - 2

3 - 1

7 - 3

3-1E

DOOR PARTS

CONTROL PANEL PARTS

MISCELLANEOUS

R-1480

R-1481

R-1482

123

PACKING AND ACCESSORIES

'98 SHARP CORP. (3S2.530E) Printed in U.S.A

No part of this publication may be repro-

duced, stored in retrieval systems, or trans-

mitted in any form or by any means, elec-

tronic, mechanical, photocopying, record-

ing, or otherwise, without prior written per-

mission of the publisher.

GREASE FILTER (x 2)

6-13

INSTALL MATERIAL ASSEMBLY

6-1

6-2

6-3 OPERATION MANUAL

WALL TEMPLATE

INSTALLATION INSTRUCTION

6-4 TOP TEMPLATE

6-5

4-3 TURNTABLE TRAY

TOP PAD

SPADBB026MRE0

BOTTOM PAD

SPADBB025MRE0

PACKING CASE

WRAP COVER

SSAKH0103MRE0

Non-replaceable items



DOOR PROTECTOR

SPADP0221MRE0

TRAY PACK

SPADPB037MRE0

Sharp Microwave Oven R 1480 Users Manual 1480/81/82(TXT)

Sharp Microwave Oven R-1482 R1480

R-1480 to the manual dd1517e9-e09b-4ab4-8769-d65cb63d2707

Navigation menu

Versions of this User Manual:

Views

Navigation