SHARP R200BK, R-200BW Service Manual

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SER VICE MANU AL

S1802R200BPW/

MICROWAVE OVEN

R-200BK R-200BW

BAKED POTATO

COOK 1 medium

FRESH

VEGETABLES

COOK 2 cups

POPCORN

POP 3.5 oz. bag

DINNER

PLATE

REHEAT

SOUP

REHEAT

1 cup

ROLL/

MUFFIN

REHEAT

1 medium

DEFROST



Check chart in Operation Manual

MODELS

4 5

min.



6 8

min.



3 4

min.

6 7 8



3 4

min.

6 8

min.



sec.

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.

R-200BK R-200BW

WARNING TO SERVICE PERSONNEL: Microwave ovens contain 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 Rectifier 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 ..............................................................................................................................9

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

TOUCH CONTROL PANEL .................................................................................................................................16

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................20

PICTORIAL DIAGRAM ........................................................................................................................................26

CONTROL PANEL CIRCUIT ...............................................................................................................................27

PRINTED WIRING BOARD .................................................................................................................................28

PARTS LIST ........................................................................................................................................................29

PACKING AND ACCESSORIES .........................................................................................................................31

SHARP CORPORATION

This document has been published to be used for after sales service only. The contents are subject to change without notice.

R-200BK R-200BW

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.

WARNING TO SERVICE PERSONNEL

Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts fatal, electrical shock.

(Example) High Voltage Capacitor, High Voltage Power Trans-

former, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..

Read the Service Manual carefully and follow all instructions.

may result in a severe, possibly

Don't Touch ! Danger High Voltage

R-200BK R-200BW

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 highvoltage capacitor (that is the connecting lead of the highvoltage rectifier) against the chassis with the use of an insulated screwdriver.

Wherever 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 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 function.

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 reexamine 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.

R-200BK R-200BW

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.

SERVICE MANUAL

MICROWAVE OVEN

PRODUCT DESCRIPTION

R-200BK R-200BW

R-200BK/ R-200BW

FOREWORD

This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVEN, R-200BK, R-200BW.

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. (C) The door packing is not damaged. (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.

GENERAL INFORMATION

OPERATION

TROUBLESHOOTING GUIDE AND TEST PROCEDURE

TOUCH CONTROL PANEL

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

WIRING DIAGRAM

PARTS LIST

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.

SHARP ELECTRONICS CORPORATION

SHARP PLAZA, MAHWAH,

NEW JERSEY 07430-2135

R-200BK R-200BW

PRODUCT DESCRIPTION

SPECIFICATIONS

ITEM DESCRIPTION

Power Requirements 120 Volts

60 Hertz

Single phase, 3 wire grounded Power Consumption 1030W / Approx. 9.0 Amperes Power Output 600 W nominal of RF microwave energy (IEC 705 Test procedure)

Operating frequency 2450 MHz Case Dimensions Width 18-1/8"

Height 11-3/8"

Depth 14-5/8" Cooking Cavity Dimensions Width 12-3/8"

(0.7 Cubic feet) Height 7-7/8"

Depth 12-5/8" Control Complement Light up dial timer (15 minutes)

No cooking control Oven Cavity Light Yes Safety Standard UL Listed.

FCC Authorized

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

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.

Electrical Requirements The electrical requirements are a 115 -120 volt 60 Hz, AC only, 15 or 20 amp. fused electrical supply. It is recommended that a separate circuit serving only this appliance be provided. When installing this appliance, observe all applicable codes and ordinances. A short power-supply cord is provided to reduce risks of becoming entangled in or tripping over a longer cord. Where a two-pronged wall-receptacle is encountered, it is the personal responsibility and obligation of the customer to contact a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded and polarized. If the extension cord must be used, it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally.

CAUTION: DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE ROUND GROUNDING PRONG FROM

THIS PLUG.

3-Pronged Plug

Grounded Receptacle Box

Grounding Pin

3-Pronged Receptacle

OVEN DIAGRAM

R-200BK R-200BW

1. Oven door with see-through window

2. Safety door latches.

3. Door hinges

4. Door seals and sealing surfaces

5. Turntable motor shaft

6. Removable turntable support

7. Removable turntable

8. Ventilation openings. (Rear)

9. Oven lamp.

10.Wave guide cover.

11.Power supply cord

CONTROL PANEL

BAKED POTATO

COOK 1 medium

FRESH VEGETABLES

COOK 2 cups

POPCORN

POP 3.5 oz. bag

4 5min.



6 8min.



3 4min.

DINNER PLATE

REHEAT 3 4min.

SOUP

REHEAT

1 cup

ROLL/

MUFFIN

REHEAT

1 medium

DEFROST

Check chart in Operation Manual

6 7



4 5min.



20sec.



R-200BK R-200BW

OPERATION

DESCRIPTION OF OPERATING SEQUENCE

The following is a description of component functions during oven operation.

OFF CONDITION

Closing the door activates 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).

COOKING CONDITION

When the Light Up Dial is turned, the following operations occur:

1. The contacts of the relay are closed and components connected to the relay are turned on as follows. (For details, refer to Figure O-2)

RELAY CONNECTED COMPONENTS RY-1 oven lamp/turntable motor/fan motor

power transformer

2. 120 volts A.C. is supplied to the primary winding of the power transformer and is converted to about 3.5 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 (RY1) are activated with the following results. The circuits to the oven lamp, turntable motor, the cooling fan motor, and the high voltage components are de-energized, and the Light Up Dial indicates the time still remaining in the cook cycle when the door was opened.

7. The monitor switch is electrically monitoring the operation of the primary interlock relay (RY1) and the secondary interlock switch and is mechanically associated with the door so that it will function in the following sequence.

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

secondary interlock switch, door sensing switch and primary interlock relay (RY1) open their contacts. Then the monitor switch contacts close.

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

monitor switch contacts open first. Then the contacts of the secondary interlock switch and door sensing

switch close. If the secondary interlock switch and primary interlock relay (RY1) fail with the contacts closed when the door is opened, the closing of the monitor switch contacts will form a short circuit through the C/T fuse and primary interlock relay (RY1), causing the C/T fuse to blow.

SCHEMATIC

NOTE: CONDITION OF OVEN

1. LIGHT UP DIAL OFF.

2. DOOR CLOSED.

120V AC 60 Hz

C/T FUSE

CONTROL UNIT

SECONDARY INTERLOCK SWITCH

MAGNETRON  THERMAL CUT-OUT

COM.

(RY-1)

A1 A3

PRIMARY INTERLOCK RELAY

DOOR SENSING SWITCH

N.O.

OVEN LAMP

TTM

TURN- TABLE MOTOR

FAN  MOTOR

Figure O-1. Oven Schematic-Off Condition

MONITOR  SWITCH

POWER  TRANSFORMER

CAPACITOR

0.72µF

RECTIFIER

MAGNETRON

SCHEMATIC

NOTE: CONDITION OF OVEN

1. DOOR CLOSED.

2. LIGHT UP DIAL ON.

R-200BK R-200BW

120V AC 60 Hz

C/T FUSE

CONTROL UNIT

SECONDARY INTERLOCK SWITCH

MAGNETRON  THERMAL CUT-OUT

(RY-1)

COM.

PRIMARY INTERLOCK RELAY

A1 A3

DOOR SENSING SWITCH

N.O.

Figure O-2. Oven Schematic-Cooking Condition

DESCRIPTION AND FUNCTION OF COMPONENTS

DOOR OPEN MECHANISM

The door is opened by pulling the door, refer to the Figure D-1.

Latch Heads 

Latch Hook

POWER  TRANSFORMER

OVEN LAMP

TTM

TURN- TABLE MOTOR

FAN  MOTOR

MONITOR  SWITCH

CAPACITOR

0.72µF

RECTIFIER

MAGNETRON

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 C/T fuse, when the contacts of the primary interlock relay (RY1) and secondary interlock switch fail to open when the door is opened.

Door Sensing Switch

Monitor

Door

Secondary Interlock

Switch

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 power to all high voltage components. A cook cycle cannot take place until the door is firmly closed thereby activating both interlock switches. The primary interlock system consists of the door sensing switch and primary interlock relay located on the control circuit board.

Functions:

1. When the door is opened, the monitor switch contacts close (to the ON condition) due to their being normally closed. At this time the primary interlock relay (RY1) and secondary interlock switch are in the OFF condition (contacts open) due to its being normally open contact switches.

2. As the door goes to a closed position, the monitor switch contacts are first opened and then the door sensing switch and secondary interlock switch contacts close.

3. If the door is opened, and the primary interlock relay (RY1) and the secondary interlock switch contact fail to open, the C/T fuse blows simultaneously with closing of the monitor switch contacts.

CAUTION: BEFORE REPLACING A BLOWN C/T FUSE,

TEST THE DOOR SENSING SWITCH, PRIMARY INTERLOCK RELAY (RY1), SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OPERATION. (REFER TO CHAPTER "TEST PROCEDURE").

NOTE: C/T FUSE AND MONITOR SWITCH ARE

REPLACED AS AN ASSEMBLY

R-200BK R-200BW

TURNTABLE MOTOR

The turntable motor rotates the turntable located on the bottom of the oven cavity, so that the food on the turntable is cooked evenly. The turntable may turn in either direction.

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 vapours given off from the heating foods. It is then exhausted through the exhausting air vents at the oven cavity.

MAGNETRON THERMAL CUT-OUT

The thermal cut-out located on the top of the oven cavity 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 thermal cut-out remains closed.

However, when abnormally high temperatures are reached within the magnetron, the thermal cut-out will open at 257˚F (125˚C), causing the oven to shut down.

C/T FUSE

1. The C/T fuse blows when the contacts (COM-NO) of the primary interlock relay (RY2) and secondary interlock switch remain closed with the oven door open and when the monitor switch closes.

2. If the wire harness or electrical components are shortcircuited, this C/T fuse blows to prevent an electric shock or fire hazard.

3. The C/T fuse, located on the top of the oven cavity, is designed to prevent damage to the oven by fire. If the food load is overcooked, by either error in cook time or defect in the timer, the C/T fuse will open.

Under normal operation, the C/T fuse remains closed. However, when abnormally high temperatures are reached within the oven cavity, the C/T fuse will open at 248˚F (120˚C), causing the oven to shut down or when the electric currents beyond 13A flow, the C/T fuse will open.

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 C/T fuse, check the monitor switch, primary

interlock relay (RY1), door sensing switch and secondary interlock switch before replacing the C/T fuse. If C/T fuse is replaced, the monitor switch must also be replaced. Use part FFS-BA020WRK0 as an assembly.

IMPORTANT: Wherever 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 function.

TEST PROCEDURE

POSSIBLE CAUSE

AND

DEFECTIVE PARTS

RE CK ABC

CK = Check / RE = Replace

EFFGHRE RE CK

I/J

CKCK CK K

R-200BK R-200BW

CONDITION

OFF CONDITION

COOKING CONDITION

PROBLEM

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

C/T fuse blows when power cord is plugged into wall receptacle.

C/T fuse blows when the door is opened. Fan motor does not operate. (All other

electric components function.) Oven lamp does not light at all. (All other

electric components function.) Turntable motor does not operate. (All other

electric components function.) Oven does not go into cook cycle when

Light Up Dial is turned 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).

Oven lamp, turntable motor and fan motor do not operate.

SHORT IN POWER CORD

SHORT OR OPEN WIRING

MAGNETRON

POWER TRANSFORMER

H.V. RECTIFIER ASSEMBLY

HIGH VOLTAGE CAPACITOR

MAGNETRON THERMAL CUT-OUT

PRIMARY INTERLOCK SYSTEM

SECONDARY INTERLOCK SWITCH

MONITOR SWITCH

C/T FUSE

OVEN LAMP OR SOCKET

COOLING FAN MOTOR

TURNTABLE MOTOR

CONTROL UNIT OR RELAY

WRONG OPERATION

LOW VOLTAGE

DIRTY OVEN CAVITY

FOIL PATTERN ON PWB.

PROCEDURE

LETTER

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. 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).

TEST PROCEDURES

COMPONENT TEST

R-200BK R-200BW

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

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 15 to 28˚F(8.3 to 15.6˚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.

B POWER TRANSFORMER 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 164 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.

(HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE.)

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.

TEST PROCEDURES

R-200BK R-200BW

PROCEDURE

LETTER

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.

D HIGH VOLTAGE CAPACITOR 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.

E MAGNETRON 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. If the temperature of the magnetron reaches approximately 257˚F(125˚C), the thermal cut-out opens. An open thermal cut-out 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.

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 INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE,

REPLACE THERMAL CUT-OUT.

COMPONENT TEST

F SECONDARY INTERLOCK SWITCH 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 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.

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.

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TEST PROCEDURES

PROCEDURE

LETTER

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. PRIMARY INTERLOCK RELAY (RY1)

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.

G MONITOR SWITCH 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 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.

COMPONENT TEST

SCREW  DRIVER

H BLOWN C/T 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. If the C/T 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 C/T fuse.

CAUTION: BEFORE REPLACING A BLOWN C/T FUSE, TEST THE PRIMARY INTERLOCK RELAY,

SECONDARY INTERLOCK SWITCH, DOOR SENSING SWITCH AND MONITOR SWITCH FOR PROPER OPERATION.

MONITOR  SWITCH

OHMMETER

TEST PROCEDURES

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PROCEDURE

LETTER

If the C/T fuse is blown by improper switch operation, the C/T fuse and monitor switch must be replaced with "C/T fuse and monitor switch assembly" part number FFS-BA020WRK0, even if the monitor switch operates normally. The C/T fuse and monitor switch assembly is comprised of a 13 ampere fuse and switch.

A continuity check across the C/T fuse terminals should indicate a closed circuit unless the temperature of the C/T fuse reaches approximately 248˚F(120˚C). An open C/T fuse indicates the oven overheated, Replace the oven C/T fuse and check the inside of the oven cavity, the proper setting of cooking time and the proper operation of control unit. Also check for proper air flow through the ovens venting system. Especially check the cooling fan for proper operation and the air guide for restriction.

CAUTION: IF THE C/T FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE

THE C/T FUSE.

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.

I CONTROL PANEL ASSEMBLY TEST

WARNING :Do not touch the electrical parts and the printed wiring board to prevent an electric

shock. Because the control unit is "TRANSLESS CIRCUIR" and many electrical parts are used at A.C. line voltage.

The 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 troubleshooting by unit replacement is described according to the symptoms indicated.

Before testing,

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.

1. Control Panel The following symptoms indicate a defective control unit.

1-1 In connection with LEDs

a) At a certain LED, all or some LEDs do not light up. b) At a certain LED, brightness is low. c) Only one LED does not light up. d) All or some LEDs continue to light up. e) A certain group of LEDs do not light up. f) The LEDs flicker.

1-2 Other possible troubles caused by defective control unit.

a) Buzzer does not sound or continues to sound. b) Clock is not possible. c) Cooking time can not be set.

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 function.

COMPONENT TEST

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TEST PROCEDURES

PROCEDURE

LETTER

J RELAY TEST

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. 5 of the 3 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 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. 17.0V D.C.

Oven lamp / Turntable motor / Cooling fan motor / Power transformer

The voltage under the condition when all LEDs light up.

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 function.

K FOIL PATTERN ON THE PRINTED WIRING BOARD TEST

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.

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.

RY1

R11

RY2

ORG BRK

ORG

RED RED

(J1)

CN-A

VRS1

TEST PROCEDURES

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PROCEDURE

LETTER

COMPONENT TEST

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 function.

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

1 The rated AC voltage is not present between Check supply voltage and oven power cord.

Pin No. 5 of the 3-pin connector (A) and the common terminal of the relay RY1

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 function.

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CONTROL PANEL ASSEMBLY

OUTLINE OF CONTROL PANEL

Control Unit

Control unit consists of LSI, power source circuit, synchronizing signal circuit, ACL circuit, buzzer circuit, encoder circuit and indicator circuit.

1) LSI

This LSI controls the encoder signal, relay driving signal for oven function, buzzer signal and LED signal.

2) Power Source Circuit

This circuit generates voltage necessary in the control unit.

Symbol Voltage Application

VC +5.0V LSI(I-1) VR +17.0V RELAY(RY1)

The voltage under the condition when all LEDs light up. The voltage VR will vary according to the quantity of the LEDs which light up.

3) Synchronizing Signal Circuit

The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit. It accompanies a very small error because it works on commercial frequency.

4) ACL

A circuit to generate a signals which resets the LSI to the initial state when power is supplied.

5) Buzzer Circuit

The buzzer is responsive to signals from the LSI to emit audible sounds (completion sound).

6) Door Sensing Switch (Stop Switch)

A switch to “tell” the LSI if the door is open or closed.

7) Relay Circuit

To drive the magnetron, fan motor, turntable motor and light the oven lamp.

8) Encoder

The encoder generates the pulse signal, and the pulse signal is sent to the LSI.

9) Indicator Circuit

Indicator elements are the Light-emitting diodes (LD1LD20). This circuit consists of 4-digits and 5 segments.

DESCRIPTION OF LSI

LSI(IZA860DR)

The I/O signal of the LSI(IZA860DR) are detailed in the following table.

Pin No. Signal I/O Description

1 RST 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.

2 INT IN Signal coming from encoder.

When the encoder is turned, the contacts of encoder make pulse signals. And pulse signals are input into INT.

3 AVSS IN A/D converter power source voltage.

The power source voltage to drive the A/D converter in the LSI. Connected to GND.

4 VREF IN Reference voltage input terminal.

A reference voltage is applied to the A/D converter in the LSI. Connected to GND.

5K0INTerminal to change functions according to the model.

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

6 K1 IN Connected to GND.

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7 AVDD IN A/D converter power source voltage.

The power source voltage to drive the A/D converter in the LSI. 8 NC No connection terminal. 9 S0 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD1 - LD5). 10 S1 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD6 - LD10). 11 S2 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD11 - LD15). 12 S3 OUT Digit selection signal.

Signal is input to the anodes of the light-emitting diodes (LD16 - LD20). 13-14 NC No connection terminal. 15 D0 OUT Connected to VC. 16 D1 OUT Magnetron high-voltage circuit, oven lamp, turntable motor and fan motor

driving signal(Square Waveform : 60Hz)

To turn on and off the relay (RY1). In

16.7 msec. H

100% POWER operation, the signals hold “L” level during microwave cook-

ing and “H” level while not cooking.

During cooking

17 CNVS IN Reference voltage input terminal.

A reference voltage is applied to the A/D converter in the LSI. Connected to GND.

18 VSS IN Power source voltage: -0V.

The power source voltage to drive the LSI is input to VSS terminal. Connected to GND.

19 D2 OUT Segment data signal.

Signal is input to the cathodes of the light-emitting diodes (LD1 ,LD6, LD11 and LD16).

20 D3 OUT Segment data signal.

Signal is input to the cathodes of the light-emitting diodes (LD1-LD2, LD6-LD7, LD12, LD16 and LD17).

21 D4 OUT Segment data signal.

Signal is input to the cathodes of the light-emitting diodes (LD1-LD3, LD6-LD8, LD11LD13, LD16-LD17 and LD18).

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Pin No. Signal I/O Description

22 D5 OUT Segment data signal.

Signal is input to the cathodes of the light-emitting diodes (LD1-LD4, LD6-LD9, LD11LD14, LD16-LD18 and LD19).

23-25 D6-D7 OUT Segment data signal.

Signal is input to the cathodes of all light-emitting diodes (LD1-D20). 26 NC No connection terminal. 27 F0 IN Input signal which communicates the door open/close information to LSI.

Door closed; “L” level signal.

Door opened; “H” level signal. 28 F1 OUT Connected to CNTR. 29 F2 OUT Terminal not used. 30 F3 IN Signal coming from encoder.

Signal similar to INT. Pulse signals are input into F3. 31-32 NC No connection terminal. 33 XOUT OUT Internal clock oscillation frequency control output.

Output to control oscillation input of XOUT. 34 XIN IN Internal clock oscillation frequency input setting.

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

respect to XIN terminal. 35 CNTR OUT Signal to sound buzzer.

A: Completion sound.

2.0 sec.

36 VDD IN Power source voltage: +5.0V.

The power source voltage to drive the LSI is input to VDD terminal.

H : VC(+5V)

L : GND

SERVICING

1. Precautions for Handling Electronic Components

This unit uses CMOS LSI in the integral part of the circuits. When handling these parts, the following 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 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.

approx. 1M ohm

2. Shapes of Electronic Components

Transistor 2SA1267Y 2SC1740S DTA143ES DTC143ES

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 MICROWAVE 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-200BK R-200BW

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

6) Run the oven and check all function.

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 so long enough that they may be separated from each other. For those models, therefore, it is possible to check and repair the controls of the touch control panel while keeping it apart from the oven proper; in this case you must short both ends of the door sensing switch (on PWB) of the touch control panel with a jumper, which brings about an operational state that is equivalent to the oven door being closed. As for the sensor-related controls of the touch control panel, checking them is possible if the 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 sensorrelated 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.

R-200BK

Special Screw

Screw Driver Type: TORX T20 H or GTXH20-100

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COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

WARNING AGAINST HIGH VOLTAGE:

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.

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.

WARNING FOR WIRING

To prevent an electric shock, take the following precautions.

1. Before wiring,

1) Disconnect the power supply cord.

2) Open the door and 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.

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:

OUTER CASE REMOVAL

To remove the outer case, procedure as follows.

1. Disconnect the power supply cord.

2. Open the oven door and block it open.

3. Remove the two (2) screws from the lower portion of the rear cabinet using a T20H Torx type or GTXH20-100 screw driver.

4. Remove the remaining two (2) screws from rear and four (4) screws along the right and left side of outer case.

5. Slide the entire outer case back out about 1 inch (3 cm) to free it from retaining clips on the cavity face plate.

6. Lift entire outer case from the unit.

R-200BK

Oven lamp socket

Terminal

Wire lead

Terminal hole

Flate type small screw driver

R-200BW

CAUTION: 1. DISCONNECT OVEN FROM POWER SUP-

PLY BEFORE REMOVING OUTER CASE.

2. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING.

MAGNETRON REMOVAL

Disconnect the power supply cord and remove outer case.

2. Open the oven door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from magnetron.

5. Remove the three (3) screws holding the magnetron to the waveguide.

HIGH VOLTAGE COMPONENTS REMOVAL

(HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY)

To remove the components, proceed as follows.

Disconnect the power supply cord and remove outer case.

2. Open the oven door and block it open.

3. Discharge high voltage capacitor.

4. Remove one (1) screw holding capacitor holder to rear cabinet.

5. Disconnect the H.V. wire of the H.V. rectifier assembly from the magnetron.

6. Disconnect the filament lead of the power transformer from the H.V. capacitor.

7. Remove one (1) screw holding ground side terminal of high voltage rectifier assembly, and remove capacitor holder.

NOTE: When replacing the outer case, the 2 special

Torx screws must be reinstalled in the same locations.

6. Remove the magnetron from waveguide.

7. Now, the magnetron is free. CAUTION: WHEN REPLACING THE MAGNETRON, BE

SURE THE R.F. GASKET IS IN PLACE AND THE MAGNETRON MOUNTING SCREWS ARE TIGHTENED SECURELY.

8. Disconnect all the leads and terminals of high voltage rectifier assembly from high voltage capacitor.

9. Now the H.V. rectifier assembly and H.V. capacitor should be free.

CAUTION: WHEN REPLACING HIGH VOLTAGE RECTI-

FIER ASSEMBLY, ENSURE THAT THE CATHODE (GROUND) CONNECTION IS SECURELY FIXED TO THE CAPACITOR HOLDER WITH A GROUNDING SCREW.

CAUTION: DO NOT REPLACE ONLY HIGH VOLTAGE

RECTIFIER. WHEN REPLACING IT, REPLACE HIGH VOLTAGE RECTIFIER ASSEMBLY.

POWER TRANSFORMER REMOVAL

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

2. Open the oven door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads (main wire harness and H.V. wire) from power transformer.

5. Disconnect the lead from magnetron filament.

6. Disconnect the lead of the power transformer from high voltage capacitor.

7. Remove the two (2) screws holding the transformer to bottom plate.

8. Remove the transformer.

OVEN LAMP AND LAMP SOCKET REMOVAL

Disconnect the power supply cord and remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Pull the wire leads from the oven lamp socket by pushing the terminal hole of the oven lamp socket with the flat type small screw driver.

5. Tear the cushion from the light mount plate.

6. Bend the tab of the light mount plate holding the oven.

7. Lift up the oven lamp socket.

8. Now, the oven lamp socket is free.

9. Now the power transformer is free.

Re-install

1. Rest transformer on the bottom plate with its primary terminals toward the oven face plate.

2. Secure transformer with two (2) screws to the bottom plate.

3. Re-connect wire leads (primary and high voltage) and filament leads to the power transformer, magnetron and high voltage capacitor, referring to "Pictorial Diagram".

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

Figure C-1. Oven lamp socket

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POSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVAL

Disconnect the power supply cord, and remove outer case.

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, INSTALL THE POSITIVE LOCK® SO THAT THE LEVER FACES YOU

CONTROL PANEL ASSEMBLY REMOVAL

Disconnect the power supply cord and remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the leads from the control unit.

5. Remove the one (1) screw holding the chassis support to the front plate of the oven cavity.

Terminal

Positive lock® connector

Lever

Push

Pull down

Figure C-2. Positive lock® connector

6. Remove the chassis support from the oven.

7. Lift up the control panel and release it from the oven cavity.

8. Now, the control panel assembly is free.

9. Open the door. Remove the switch lever from the front plate of the oven cavity.

TURNTABLE MOTOR REMOVAL

Removal

1. Disconnect the power supply cord.

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

3. Turn the oven over.

4. Cut the four (4) bridges holding the turntable motor cover to the bottom plate with the cutting pliers as shown in Figure C-3.

CAUTION: DO NOT DROP THE TURNTABLE MOTOR

COVER INTO THE OVEN AFTER CUTTING THE BRIDGES. BECAUSE IT WILL DAMAGE THE WIRE LEADS OF THE MOTOR AND IT IS DIFFICULT TO REMOVE IT OUT OF THE OVEN.

5. Remove the turntable motor cover from the bottom plate.

6. Disconnect the wire leads from the turntable motor.

7. Remove the single (1) screw holding the turntable motor to the oven cavity.

Cutting Pliers

Bridges

Screw; XHTSD40P08RV0 or XFPSD40P08K00

Turnrable Motor Cover

Tab

Hole

8. Remove the turntable motor from the oven cavity.

9. Remove the O-ring and washer from the turntable motor.

10.Now, the turntable motor is free.

Re-install

1. Remove the any sharp edges on the turntable motor cover and the bottom plate with the cutting pliers.

2. Re-install the O-ring.

3. Apply the grease (Shinetsu silicone grease G-420 of Sinetsu Chemical Co. Ltd. or Toray Silicone grease SH14 of Toray Silicone Co., Ltd.) to the O-ring and the base of the turntable motor shaft as shown in Figure C-4.

4. Re-install the turntable motor with the O-ring and washer to the oven cavity with the single (1) screw.

5. Re-connect the wire leads to the turntable motor.

6. Insert the tab of the turntable motor cover into the hole of the bottom plate as shown in Figure C-3.

7. Re-install the turntable motor cover to the bottom plate with one (1) screw XHTSD40P08RV0 or XFPSD40P08K00 as shown in Figure C-3.

Washer

O-ring

Apply grease here

Base of turntable motor shaft

Washer

O-ring

Bottom Plate

Figure C-3. Turntable Motor Cover

Turntable motor

Figure C-4. Washer and O-ring Installation and

Grease Applying.

COOLING FAN MOTOR REMOVAL

R-200BK R-200BW

REMOVAL

Disconnect the power supply cord and remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect the wire leads from the fan motor.

5. Remove the one (1) screw holding the chassis support to the oven cavity front plate.

6. Remove the chassis support .

7. Release the filament lead of the power transformer and the H.V. wire from the fan duct.

8. Remove the one (1) screw holding the light mounting plate to the oven cavity.

9. Release the wire leads (to the oven lamp) from the hole of the fan duct.

10.Release the fan motor assembly from the oven cavity.

11.Remove the fan blade from the fan motor shaft according to the following procedure.

12 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 easy to be 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.

13 Remove the fan blade assembly from the shaft of the fan

motor by pulling and rotating the fan blade with your hand.

14 Now, the fan blade will be free.

CAUTION:

• Do not re-use the removed fan blade because the hole (for shaft) may be larger than normal.

Coil

Groove joint pliers

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

16. Now, the fan motor is free.

INSTALLATION

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

2. Install the fan blade to the fan motor shaft according to the following procedure.

3. Hold the center of the bracket which supports the shaft of the fan motor on the flat table.

4. Apply the screw lock tight into the hole (for shaft) of the fan blade.

5. 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.

CAUTION:

• Do not hit the fan blade strongly when installed

because the bracket may be transformed.

• Make sure that the fan blade rotates smooth after

installed.

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

6. Install the fan motor assembly to the oven cavity by fitting the tabs of the fan duct into the holes of the oven cavity and the waveguide flange.

7. Re-install the light mounting plate to the oven cavity with the one (1) screw.

8. Insert the end of the chassis support into the slit of the oven cavity rear cabinet.

9. Re-install the chassis support to the oven cavity front plate with the one (1) screw.

10. Install the filament lead and the H.V. wire into the hole of the fan duct .

11. Re-install the wire leads (to the oven lamp) to the hole of the fan duct.

12. Connect the wire leads to the fan motor, referring to the pictorial diagram.

Shaft

Stator

Gap Bracket

Rotor

Axis

Shaft

Stator

Rotor

These are the positions that should be pinched with pliers

Table

Center of bracket

Side ViewRear View

DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL

Disconnect the power supply cord and remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Disconnect wire leads from the switches and control panel.

5. Remove the control panel assembly from the oven cavity front flange. Refer to chapter "CONTROL PANEL ASSEMBLY REMOVAL".

6. Remove two (2) screws holding latch hook to oven flange.

7. Remove latch hook assembly from oven flange.

8. To remove the secondary interlock switch.

8-1. Pull out the secondary interlock switch from the latch

hook, by pushing outward on the tab that is holding the switch. But the switch will be caught by the bar of the latch hook.

R-200BK R-200BW

8-2. Then pull out the switch while pushing the plunger of the

switch again.

8-3. Now the secondary interlock switch is free.

9. To remove the monitor switch or door sensing switch. 9-1. Push outward on the tab that is holding the switch then

pull the switch upward.

9-2. Pull out the switch from the latch hook. Do not break the

5. Re-connect wire leads to the control unit. Refer to chapter "Pictorial Diagram".

6. Make sure that monitor switch is operating properly and check continuity of the monitor circuit. Refer to chapter "Test Procedure", and Adjustment Procedure below.

Latch Hook

pole or tab of the latch hook.

9-3. Now the switch is free.

Re-install

1. Re-install each switch in its place. The secondary interlock switch is in the lower position and the monitor switch is in the middle position. The door sensing switch is in the

Pole

Door Sensing Switch

upper position.

2. Re-connect wire leads to each switch. Refer to chapter "Pictorial Diagram".

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

4. Re-install the control panel assembly to the oven cavity

Pole

Monitor Switch

Secondary Interlock Switch

Tab

Outward

Tab

Bar

Outward

front flange.

Figure C-5. Latch Switch Removal

DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT

Disconnect the power supply cord and remove outer case.

2. Open the door and block it open.

3. Discharge high voltage capacitor.

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.

4. Loosen the two (2) screws holding the latch hook to the flange of the oven front face.

5. With the 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 horizontal position of the latch hook should be adjusted so that the monitor switch is activated with the door closed. The vertical position of the latch hook should be adjusted so that the door sensing switch and the secondary interlock switch are activated with the door closed.

6. Secure the screws firmly.

7. Check the operation of all switches. If each switch has not activated with the door closed, loosen screw and adjust the latch hook position.

After adjustment, make sure of the following.

1. In and out play of the door remains less than 0.5mm when in 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 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. The monitor switch contacts close when the door is opened.

4. The contacts of door sensing switch and secondary interlock switch open within 1.6mm 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 the door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

Latch Heads

Door



Secondary Interlock Switch

Latch Hook

Door Sensing Switch

Monitor Switch

Figure C-6. Latch Switch Adjustments

DOOR REPLACEMENT

REMOVAL

Disconnect the power supply cord

2. Open the door slightly.

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

gap between the choke cover and corner portion of door panel as shown in Figure C-7 to free engaging parts.

4. Pry the principles of the lever and lift up the choke cover by inserting a putty knife in order shown in figure C-7.

R-200BK R-200BW

5. Release choke cover from door panel.

6. Now choke cover is free.

Choke Cover

Putty Knife

Door Frame

Figure C-7. Door Disassembly

7. Release two (2) pins of door panel from two (2) holes of upper and lower oven hinges by lifting up.

8. Now, door panel is free from oven cavity.

9. Release door panel from ten (10) tabs of door frame and remove door frame by sliding the door panel downward.

10.Now, door panel with sealer film is free.

11.Tear sealer film from door panel.

12.Now, door panel is free.

13.Slide latch head upward and remove it from door frame with releasing latch spring from door frame and latch head.

14.Now, latch head and latch spring are free.

15.Remove door screen from door frame.

16.Now, door screen is free.

RE-INSTALL

1. Re-install door screen to door frame.

2. Re-install latch spring to the head. Re-install latch spring to the door frame. Re-install latch head to the door frame.

3. Re-install door panel to door frame by fitting ten (10) tabs of door frame to ten (10) holes of door panel.

4. Put sealer film on door panel. Refer to "Sealer Film" and figure C-9, on how to handle the new film.

5. Catch two (2) pins of door panel on two (2) hole of upper and lower oven hinges.

6. Re-install choke cover to door panel by pushing.

Note: After any service to the door; (A) Make sure that door sensing switch, secondary

interlock switch and monitor 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.

microwave energy from oven cavity during cook cycle. This function does not require that door be airtight, 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.

Upper Oven

Hinge

Upper Oven Hinge

Door Panel

Lower Oven Hinge

Choke Cover

Lower

Oven Hinge

Figure C-8. Door Replacement

SEALER FILM

Installation

1. Put the adhesive tape on the backing film of the sealer film as shown in Fig. C-9.

2. Tear the backing film by pulling the adhesive tape.

3. Put the pasted side of the sealer film on the door panel

Sealer film

Backing film

Adhesive tape

After any service, 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. 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 of

Figure C-9. Sealer film

R-200BK R-200BW

NOTE:

The grounding conductor of

the power supply cord has

been grounded by power

supply cord fixing screw.

The screw must allways be

WHT

kept tight.

GRD

POWER SUPPLY CORD

120V 60Hz

NOTE:

The neutral (WHT) wire must be

RED

OVEN LAMP

& SOCKET

connected to the terminal with "N"

mark on the power supply cord.

ORG

GRY

ORG

BLK

ORG

MAGNETRON

THERMAL CUT-OUT

WHT

HIGH 

VOLTAGE

CAPACITOR

H.V.

RECTIFIER

HIGH VOLTAGE

WIRE B

POWER 

MAGNETRON

TRANSFORMER

HIGH VOLTAGE COMPONENTS

GRY

ORG

WHT

ORG

NOTE: Hot (RED) wire must

be connected to the terminal

BLK

RED

with blue mark on the oven

light socket.

C/T FUSE

RED

Blue Mark

DOOR

WHT

SENSING SWITCH

GRY

N.O.

COM

GRY

CN-A

GRY

345

FAN MOTOR

WHT

ORG

GRY

N.C.

COM

MONITOR 

SWITCH

SECONDARY

INTERLOCK SWITCH

N.O.

COM

GRY

WHT

GRY

ORG

TURNTABLE

MOTOR

Figure S-1. Pictorial Diagram

CN-A

CONTROL PANEL

RED

ORG

RY1



PRIMARY

INTERLOCK

RELAY

SP1

R-200BK R-200BW

D1-4

FUSE1

SP1

(JC)

R3 1k 1w

1/2w 200 R2

ZD1

IN4005

R42 3.3k

 D3

R41 1k

Q40

DTC143E

C6 0.1µ/50v C5 47µ/16v

–

ZD4



C4 0.1µ/50v C3 1000µ/25v

–

ZD1-2 HZ12A1

C1 1.5µ/160VAC

10G471K1

VRS1

ZD6 HZ4C3

R6 4.7k

ZD4-5 HZ6C3

ZD5

(JA)

R10 100k 1/2w

(J1)

Q2

1/2w 200 R1

Q1

2SC1740

R5 1k

2SA1267Y

ZD2

GND

CF1

4MHz

C61 C60

(JD)

100k R61

100k R60

R40 4.7k

VDD

CNTR 35

INT

RST 1

R63 4.7k



FAN MOTOR

TURNTABLE

MOTOR

Q21

DTA143E

–

C21 10µ/35v

R21 4.7k

R30 4.7k R20 4.7k

C30

R31 47k

F3 30

F2 29

F1 28

F0 27

D8 25

D7 24

D6 23

D5 22

D4 21

NC 32

NC 31

XIN 34

XOUT 33

D3 20

NC 26

I-1 M34225M1

4K05K16

AVDD 7NC8S09

S110S211S3

12NC13NC14D015D116

CNVSS 17

AVSS3VREF

R62 4.7k

OVEN LAMP

POWER

TRANSFORMER

AC120V

60Hz

DOOR SENSING

SWITCH

RY1

Q20

DTC143E

D2 19

VSS 18

D20D22

–



C20

DTA143E Q73

DTA143E Q72

DTA143E Q71

DTA143E Q70

COM

0.1µ/50v

A 3

A 1

(A)

D30

: IF NOT SPECIFIED 1/4w ± 5%

: IF NOT SPECIFIED 1SS270A

: IF NOT SPECIFIED 0.01µF / 16v

NOTE :

100 R74

150 R73

240



R72

330 R71

430 R70

12 13 14 15

LD17 LD18 LD19 LD20

D82 D83 D84 D85

D78 D79 D80 D81

6 7 8 9 10

LD16

CBA

SW1

D74 D75 D76 D77

LD11 LD12 LD13 LD14 LD15



32.30 3.30 4 5

D70 D71 D72 D73

LD6 LD7 LD8 LD9 LD10

20 40 1 1.30 2

LD1 LD2 LD3 LD4 LD5

Figure S-2. Control Panel Circuit

A 5

AC120V

60Hz

R11 100 2w

(A)

R-200BK R-200BW

LD3

LD2

LD1

R70

R71

R72

LD6

LD5

LD4

D73

D74

D72

D71

D70

ABC

D84

D83

D82

D85

LD20

LD19

LD18

LD7

LD8

D75

D76

D77

LD9

LD10

LD11

D78 D79

LD12

SW1

D80

LD13

D81

LD14

LD15

R73

LD16

R74

LD17

Q22 Q40 Q20

Q21

DIP

E C B

Q70

BBE

D20

RY1

R11

Q71

E E

Q72

E R41

R21

C20

987

E Q73

RY2

R62

C60

R20

R60

R42

ORG RED

RED

R61

R63

SP1

D21

(J1)

I-1

C21

ORG BRK

C61

CF1

VRS1

R30

R40

FUSE1

R10

ZD6

D30

ZD4

(JC)

(JA)

ZD5

ZD1 ZD2

ZD3

R31

C30

R50

(JD)

D1 D2

WH-1

CN-A

D22

SW2

Figure S-3. Printed Wiring Board

PARTS LIST

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

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

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

ELECTRIC PARTS

1- 1 QSW-MA131WRE0 Secondary interlock switch & door sensing switch 2 AG 1- 2 FFS-BA020WRK0 C/T fuse & monitor switch assembly 1 AP 1- 3 FACCDA040WRE0 Power supply cord 1 AS 1- 4 QSOCLA021WRE0 Oven lamp socket 1 AH 1- 5 FH-DZA082WRK0 High voltage rectifier 1 AQ

1- 6 RC-QZA193WRE0 High voltage capacitor 1 AW

1- 6 RC-QZA199WRE0 High voltage capacitor (Interchangeable) 1 AT

1- 7 RMOTEA338WRE0 Fan motor 1 AV 1- 7 RMOTEA355WRE0 Fan motor (Interchangeable) 1 AU

∆

1- 8 RV-MZA226WRE0 Magnetron 1 BE

∆

1- 8 RV-MZA282WRE0 Magnetron (Interchangeable) 1 BP

1- 9 RLMPTA030WRE0 Oven lamp 1 AF 1-10 RMOTDA186WRE0 Turntable motor 1 AW 1-10 RMOTDA211WRE0 Turntable motor (Interchangeable) 1 AS 1-11 RTHM-A078WRE0 Thermal cut-out 125˚C 1 AK 1-12 RTRN-A560WRE0 Power transformer 1 BK

CABINET PARTS

2- 1 GCABUA657WRP0 Outer case cabinet [R-200BK] 1 AX 2- 1 GCABUA659WRP0 Outer case cabinet [R-200BW] 1 AX 2- 2 GDAI-A304WRP0 Bottom plate 1 AU 2- 3 GLEGPA074WRE0 Foot 2 AC

CONTROL PANEL PARTS

3- 1 CPWBFA758WRK0 Timer unit assembly [R-200BK] 1 BM 3- 1 CPWBFA759WRK0 Timer unit assembly [R-200BW] 1 BM 3- 1-1 CPWBFA772WRK0 Control unit 1 BM 3- 1-1A QCNCMA430DRE0 3-pin connector (CN-A) 1 AG 3- 1-2 HPNLTA133WRE0 Timer sheet 1 AH 3- 1-3 JKNBKA597WRF0 Timer knob [R-200BK] 1 AF 3- 1-3 JKNBKA598WRF0 Timer knob [R-200BW] 1 AF 3- 1-4 LHLD-A184WRF0 LED holder 1 AH C1 VCF2B62CA155K Capacitor 1.5 uF 160VAC 1 AG C3 VCEAB31EW108M Capacitor 1000 uF 25V 1 AC C4 RC-KZA087DRE0 Capacitor 0.1 uF 50V 1 AB C5 VCEAB31CW476M Capacitor 47 uF 16V 1 AA C6 RC-KZA087DRE0 Capacitor 0.1 uF 50V 1 AB C7 VCKYD11CY103N Capacitor 0.01 uF 16V 1 AH C20 VCEAB31HW104M Capacitor 0.1 uF 50V 1 AB C21 VCEAB31VW106M Capacitor 10 uF 35V 1 AB C30 VCKYD11CY103N Capacitor 0.01 uF 16V 1 AH C60-61 VCKYD11CY103N Capacitor 0.01 uF 16V 2 AH CF1 RCRS-A012DRE0 Ceramic resonator (CST4.00MGW) 1 AD D1-4 VHD1N4005E61B Diode (1N4005E) 4 AE D20 VHD1SS270A/-1 Diode (1SS270A) 1 AA D22 VHD1SS270A/-1 Diode (1SS270A) 1 AA D30 VHD1SS270A/-1 Diode (1SS270A) 1 AA D70-85 VHD1SS270A/-1 Diode (1SS270A) 16 AA FUSE1 QFS-AA005DRE0 IC PROTECTOR 1 AE I-1 RH-IZA860DRE0 LSI 1 AL LD1-20 VHPLTL1CHE/-3 Light emitting diode (LED) 20 AD Q1 VS2SC1740S/-3 Transistor (2SC1740S) 1 AB Q2 VS2SA1267Y/-3 Transistor (2SA1267Y) 1 AA Q20 VSDTC143ES/-3 Transistor (DTC143ES) 1 AB Q21 VSDTA143ES/-3 Transistor (DTA143ES) 1 AB Q40 VSDTC143ES/-3 Transistor (DTC143ES) 1 AB Q70-73 VSDTA143ES/-3 Transistor (DTA143ES) 4 AB R1-2 VRD-B12HF201J Resistor 200 ohm 1/2W 2 AB R3 VRS-B13AA102J Resistor 1.0k ohm 1W 1 AA R5 VRD-B12EF102J Resistor 1.0k ohm 1/4W 1 AA R6 VRD-B12EF472J Resistor 4.7k ohm 1/4W 1 AA R10 VRD-B12HF104J Resistor 100k ohm 1/2W 1 AA R11 VRS-L63DA101J Resistor 100 ohm 2W 1 AD R20-21 VRD-B12EF472J Resistor 4.7k ohm 1/4W 2 AA R30 VRD-B12EF472J Resistor 4.7k ohm 1/4W 1 AA R31 VRD-B12EF473J Resistor 47k ohm 1/4W 1 AA R40 VRD-B12EF472J Resistor 4.7k ohm 1/4W 1 AA R41 VRD-B12EF102J Resistor 1.0k ohm 1/4W 1 AA

R-200BK R-200BW

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

R42 VRD-B12EF332J Resistor 3.3k ohm 1/4W 1 AA R60-61 VRD-B12EF104J Resistor 100k ohm 1/4W 2 AA R62-63 VRD-B12EF472J Resistor 4.7k ohm 1/4W 2 AA R70 VRD-B12EF431J Resistor 430 ohm 1/4W 1 AA R71 VRD-B12EF331J Resistor 330 ohm 1/4W 1 AA R72 VRD-B12EF241J Resistor 240 ohm 1/4W 1 AA R73 VRD-B12EF151J Resistor 150 ohm 1/4W 1 AA R74 VRD-B12EF101J Resistor 100 ohm 1/4W 1 AA RY1 RRLY-A110DRE0 Relay (OMIF-S-124LM) 1 AL SP1 RALM-A014DRE0 Buzzer (PKM22EPT) 1 AG SW1 RVR-BA018WRE0 Rotary encoder 1 AL VRS1 RH-VZA032DRE0 Varistor (10G471K) 1 AE ZD1-2 VHEHZ12A1//-1 Zener diode (HZ12A1) 2 AA ZD4-5 VHEHZ6C3///-1 Zener diode (HZ6C3) 2 AA ZD6 VHEHZ4C3///-1 Zener diode (HZ4C3) 1 AA 3- 2 HPNLCB438WRR0 Control panel [R-200BK] 1 AV 3- 2 HPNLCB440WRR0 Control panel [R-200BW] 1 AV 3- 3 TCAUAA100WRR0 User caution label [R-200BK] 1 AC 3- 3 TCAUAA156WRR0 User caution label [R-200BW] 1 AF 3- 4 XEPSD30P08XS0 Screw; 3mm X 8mm 3 AA

OVEN PARTS

4- 1 PHOK-A105WRF0 Latch hook 1 AL

∆

4- 2 LANGQA477WRW0 Light mount plate 1 AY 4- 3 PCUSUA502WRP0 Waterproof cushion 1 AD 4- 4 LBNDKA038WRP0 Capacitor holder 1 AF 4- 5 NFANJA029WRE0 Fan blade 1 AL 4- 6 PDUC-A694WRF0 Fan duct 1 AG 4- 7 ************* Oven cavity (Not replaceable part) 1-- 4- 8 GLEGPA073WRF0 Leg 1 AD 4- 9 LANGTA318WRP0 Chassis support 1 AE 4-10 PCUSUA270WRP0 Cushion 1 AG 4-11 PCOVPA276WRE0 Waveguide cover 1 AM 4-12 PCOVPA342WRF0 B-cover Right 1 AH 4-13 PCOVPA343WRF0 B-cover Left 1 AH 4-14 PCUSUA443WRP0 Cushion 1 AE 4-15 PDUC-A700WRF0 Air separator 1 AN 4-16 PPACGA097WRE0 O-ring 1 AG

DOOR PARTS

5- 1 FDORFA321WRT0 Door panel 1 AT

∆

5- 2 GWAKPA552WRF0 Door frame [R-200BK] 1 AY 5- 2 GWAKPA551WRF0 Door frame [R-200BW] 1 AY 5- 3 HPNL-A686WRR0 Door screen 1 AY 5- 4 LSTPPA175WRF0 Latch head 1 AE

∆

5- 5 MSPRTA084WRE0 Latch spring 1 AB 5- 6 PSHEPA622WRE0 Sealer film 1 AG 5- 7 GCOVHA390WRF0 Choke cover 1 AK 5- 8 XCPSD40P08000 Screw : 4mm x 8mm 4 AA

MISCLANEOUS

6- 1 FROLPA085WRK0 Turntable support 1 AS 6- 2 NTNT-A094WRE0 Turntable 1 AN 6- 3 TINS-A644WRR0 Instruction book 1 AD 6- 4 TCAUAA145WRR0 Earth caution 2 AG 6- 5 FW-VZB655WRE0 Main wire harness 1 BA 6- 6 QW-QZA150WRE0 High voltage wire B 1 AF

6- 7 TCAUAA166WRR0 DHHS caution label 1 AC 6- 8 TCAUAA240WRR0 Screw caution 1 AC 6- 9 TCAUAA239WRR0 Monitor caution 1 AC

SCREWS AND WASHERS

7- 1 XFPSD40P08K00 Screw : 4mm x 8mm 5 AA 7- 2 LX-EZA042WRE0 Special screw 2 AB 7- 3 LX-WZA028WRE0 Special washer 1 AB 7- 4 LX-CZA030WRE0 Special screw 5 AA 7- 5 XHTSD40P08RV0 Screw : 4mm x 8mm 4 AA 7- 6 XHPSD30P06000 Screw : 3mm x 6mm 1 AA 7- 7 XOTSD40P12RV0 Screw : 4mm x 12mm 2 AA 7- 8 XOTSD40P12000 Screw : 4mm x 12mm 6 AA 7- 9 XOTSE40P08000 Screw : 4mm x 8mm [R-200BW] 4 AA 7- 9 XOTSF40P08000 Screw : 4mm x 8mm [R-200BK] 4 AA 7-10 LX-CZA071WRE0 Special screw (Torx tamper proof screw) 2 AC

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 required return should be returned as indicated in the Service Policy.

R-200BK R-200BW

PACKING AND ACCESSORIES

INTO THE  OVEN CAVITY

DOOR PROTECTION SHEET SPADPA580WRE0

TURNTABLE TRAY

OPERATION MANUAL

TURNRABLE SUPPORT

MICROWAVE OVEN

TOP PAD ASSEMBLY FPADBA375WRK0

POLYETHYLENG BAG SSAKHA014WRE0

CABINET COVER SPAKHA008WRE0

BOTTOM PAD ASSEMBLY FPADBA376WRK0

TRAY PAD ASSY

(CPADBA244WRK0)

Not replaceable items.

PACKING CASE SPAKCD030WRE0 [R-200BK]

SPAKCD031WRE0 [R-200BW] 

R-200BK R-200BW

OVEN AND CABINET PARTS

4-3

4-2

4-10

4-14

4-7

1-4

1-9

7-8

6-9

1-2

2-1

7-9

7-1

6-4

7-4

7-10

7-4

7-10

1-8

7-9

6-7

7-4

4-5

1-3

7-5

4-6

7-5

4-11

6-2

6-1

4-13

2-2

7-8

4-16

4-15

2-3

7-3

7-8

7-1

1-10

7-2

7-7

1-11

1-12

2-3

4-12

7-6

7-4

4-1

4-8

6-8

1-1

1-2

1-5

1-1

7-4

4-4

1-7

7-1

1-6

4-9

7-8

R-200BK R-200BW

CONTROL PANEL PARTS

3 - 3

3 - 2

3-1-3

3-1-2

3-1-4

3 - 1

3-4

3-1-1

3-4

DOOR PARTS

5-2

5-3

5-1

5-5

5-8

5-6

5-7

5-8

5-4

Actual wire harness may be different than illustration.

MISCELLANEOUS

6-5

6-6

R-200BK R-200BW

No part of this publication may be reproduced, stored in a retrieval systems, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

'98 SHARP CORP. (1S2.530E) Printed in U.S.A

SHARP R200BK, R-200BW Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual