LG MB319M, MB319MLA Schematic

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MICROW AVE OVEN

SER VICE MANUAL

MODEL : MB-319ML

MB-319MLA

CAUTION

BEFORE SERVICING THE UNIT, READ THESAFETY PRECAUTIONS IN THIS MANUAL.

This device is to be serviced only by properly qualified service personnel. Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be taken to avoid possible exposure to excessive microwave energy.

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.

C) Before turning on microwave power for any service test or inspection within the microwave generating

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.

SAFETY PRECAUTIONS

(Page)

SAFETY PRECAUTIONS

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Inside front cover

SPECIFICATIONS

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1-1

CAUTIONS

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2-1

INSTALLATIONS

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3-1

OPERATING INSTRUCTIONS

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4-1

FEATURES

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4-1

CONTROL PANEL

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4-1

OPERATING SEQUENCE

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4-2

SCHEMATIC DIAGRAM

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4-3

CIRCUIT DESCRIPTION

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4-4

SERVICE INFORMATION

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5-1

TOOLS AND MEASURING INSTRUMENTS

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5-1

MICROWAVE LEAKAGE TEST

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5-1

MEASUREMENT OF MICROWAVE POWER OUTPUT

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5-3

DISASSEMBLY AND ADJUSTMENT

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5-3

INTERLOCK CONTINUITY TEST

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5-7

COMPONENT TEST PROCEDURE

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5-8

TROUBLE SHOOTING

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5-12

EXPLODED VIEW

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6-1

REPLACEMENT PARTS LIST

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7-1

SCHEMATIC DIAGRAM OF P.C.B.

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8-1

PRINTED CIRCUIT BOARD

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8-2

P.C.B. PARTS LIST

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9-1

CONTENTS

1-1

This microwave oven is designed for household use only. It is not recommended for commercial purposes.

ITEM

MODEL

Power Requirement

Power Output Microwave Frequency Magnetron Timer Outside Dimensions Cavity Dimensions Net Weight Shipping weight Control Complement

Nameplate Location

Accessories

DESCRIPTION

MB-319ML MB-319MLA

120 Volts AC 60 Hz 220 Volts AC 60 Hz MICROWAVE 1,400 Watts (12.0) GRILL 1,050 Watts Single phase, 2-wire grounded 1,000 Watts full microwave power (IEC60705) 2,450 MHz 2M246 0 ~ 99 min. 99 sec. 530 (W) x 315 (H) x 394 (D) 350 (W) x 240 (H) x 365 (D)

16.3 kg (approx.)

18.7 kg (approx.) Touch Control System Clock : 1:00 - 12:59 Microwave Power for Variable Cooking Power level

HIGH ----------------------------------------Full power throughout the cooking time 9 (Saute) -------------------------approx. 90% of Full power, 8 (Reheat) --------approx. 80% 7 (Med.-High)--------------------approx. 70%, 6 (Medium) --------approx. 60% 5 (Med.-Low) --------------------approx. 50%, 4 (Defrost) ---------approx. 40% 3 (Low) ---------------------------approx. 30%, 2 (Simmer)--------approx. 20% 1 (Warm)--------------------------approx. 10%

Owner's manual & Cooking guide Glass turntable Rotating ring Grill Rack

Back Side

SPECIFICATIONS

• DO NOT operate on a 2-wire extension cord during repair and use.

• NEVER TOUCH any oven components or wiring during operation.

• BEFORE TOUCHING any parts of the oven, always remove the power plug from the outlet.

• For about 30 seconds after the oven stops, an electric charge remains in the high voltage capacitor. When replacing or checking, you must discharge the high voltage capacitor by shorting across the two terminals with an insulated screwdriver.

•

Remove your watches whenever working close to or

replacing the Magnetron.

• DO NOT touch any parts of the control panel circuit. A resulting static electric discharge may damage this P.C.B.

• NEVER operate the oven with no load.

• NEVER injure the door seal and front plate of the oven cavity.

• NEVER put iron tools on the magnetron.

• NEVER put anything into the latch hole and the interlock switches area.

• Proper operation of the microwave oven requires that the magnetron be assembled to the waveguide and cavity. Never operate the magnetron unless it is properly installed.

• Be sure that the magnetron gasket is properly installed around the dome of the tube whenever installing the magnetron.

2-1

CAUTIONS

Unlike other appliances, the microwave oven is high-voltage and high-current equipment. Though it is free from danger in ordinary use, extreme care should be taken during repair.

THE OVEN IS TO BE SERVICED ONLY BY PROPERLY QUALIFIED SERVICE PERSONNEL.

MICROWAVE RADIATION

Personnel should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating device if it is improperly used or connection. All input and output microwave connections, waveguide, flange, and gasket must be secure never operate the device without a microwave energy absorbing load attached. Never look into an open waveguide or antenna while the device is energized.

Gasket

ANTENNA

COOLING FIN

MAGNETRON CHASSIS GROUND

FILAMENT TERMINALS

MAGNETRON

INSTALLING

1. Empty the microwave oven and clean inside it with a soft, damp cloth. Check for damage such as misaligned door, damage around the door or dents inside the cavity or on the exterior.

2. Put the oven on a counter, table, or shelf that is strong enough to hold the oven and the food and utensils you put in it. (The control panel side of the oven is the heavy side. Use care when handling.)

3. Do not block the vent and the air intake openings. Blocking vent or air intake openings can cause damage to the oven and poor cooking results. Make sure the microwave oven legs are in place to ensure proper air flow.

4. The oven should not be installed in any area where heat and steam are generated, because they may damage the electronic or mechanical parts of the unit. Do not install the oven next to a conventional surface unit or above a conventional wall oven.

5. Use microwave oven in an ambient temperature less than 104°F(40°C).

6. Place the microwave oven on a sturdy and flat surface at least 10 cm(4 inches) from the wall.

7. Place the microwave oven as far away as possible from TV, RADIO, COMPUTER, etc., to prevent interference.

EARTHING INSTRUCTIONS

This microwave oven is designed to be used in a fully earthed condition. It is imperative, therefore, to make sure it is properly earthed before servicing

WARNINGTHIS APPLIANCE MUST BE EARTHED

BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.

INSTALLATIONS

3-1

10cm

FEATURES

CONTROL PANEL

1. BRAZILLIAN COOK : This menu has been pre

programmed to cook food automatically by one touch.

2. MENUS LIGHT: To let your microwave cook your selections.

3. OPTION: You can select on/off of beeper, scroll speed control and on/off of Demo.

4. AUTO COOK: This oven’s menu has been preprogrammed to automatically to cook food.

5. AUTO REHEAT: This oven’s menu has been to preprogrammed to automatically reheat food.

6. AUTO DEFROST: To select the desired auto weight defrost programmed with dial.

7. AUTO CRISP

8. STOP/CLEAR: To stop oven and clear all entries

except time of day

9. MANUAL.

10. START: This feature allows oven to begin

functioning.

11. DISPLAY WINDOW: Provides indications of the

functions selected, normally current time displayed.

4-1

OPERATING INSTRUCTIONS

Oven Front Plate

Window Door Screen

Door Seal

Display Window

Control Panel

Door Open Button Safety Door Lock System

Turntable

Turntable Shaft

Rotating Ring

Grill Rack Metal Tray

2 3

7 9

4-2

OPERATING SEQUENCE

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

1. SETTING THE CLOCK

NOTE: 1) This is a 24 hour clock.

2) Clock will operate as long as power is applied to the oven.

2. CANCEL FUNCTION

Touch the pad whenever you need to cancel an entry or a function currently in use. The display will either return to the last item entered or to the clock.

3. QUICK START

4. ONE TOUCH COOKING

5. TIME COOKING

6. MULTI-STAGE COOKING

7. AUTO WEIGHT DEFROST COOKING

8. CHILD LOCK

This oven has a CHILD LOCK feature

TO SET CHILD LOCK

• Touch the button

• Touch and hold

Desliga/Cancela

button

DESATIVADO

appear on the display.

TO CANCEL CHILD LOCK

• Touch the button

• Touch and hold

Desliga/Cancela

button

ATIVADO

appears.

9. CUSTOM SET

You can select ON/OFF of beeper, language speed, DEMO mode.

• To select sound ON/OFF

• To select language speed.

• To select DEMO mode.

Desliga/Cancela

Pratos Brosileiros

Desliga/Cancela

Liga

Desliga/Cancela

1ST STAGE

Liga

Desliga/Cancela

Auto Descongela

Dial

(Number)

Liga

Desliga/Cancela

Opções

Liga

Desliga/Cancela

Opções Liga

Dial

Liga

Desliga/Cancela

Opções Liga

Desliga/Cancela

Manual

Dial(Power)

Liga

Dial(Time)

Liga

Desliga/Cancela

Dial

Liga

Dial(Time)

Manual

Dial(Power)

Liga

Dial(Time)

2ND STAGE

Desliga/Cancela

Desliga/Cancela Manual

Dial

Liga

Dial

Liga

DialDial

2 X

SCHEMATIC DIAGRAM

4-3

CIRCUIT DESCRIPTION

GENERAL DETAILS

• The low voltage transformer supplies the necessary voltage to the micom controller when power cord is plugged in.

• When the door is closed, the primary switch is ON, the

secondary switch is ON, and the monitor switch opens (contact COM and NO).

WHEN SELECTING COOKING POWER LEVEL AND TIME

• The micom controller memorizes the function you set.

• The time you set appears in the display window.

• Each indicator light turns on to indicate that the stage

has been set.

WHEN TOUCHING THE START PAD

• The coil of the relay is energized by the micom

controller.

• Power input is supplied to the high voltage transformer

through the fuse to the primary switch and relay 2.

• Turntable rotates.

• The fan motor rotates and cools the magnetron by

blowing air (coming from the intake on the base-plate).

• The air is also directed into the oven to exhaust the

vapor in the oven through the upper plate.

• Cooking time starts counting down.

• 3.3 volts AC is generated from the filament winding of

the high voltage transformer. This 3.3 volts is applied to the magnetron to heat the magnetron filament through two noise-preventing choke coils.

• A high voltage of approximately 2100 volts AC is generated in the secondary of the high voltage transformer which is increased by the action of the high voltage diode and charging of the high voltage capacitor.

• The negative 4,000 Volts DC is applied to the filament of the magnetron.

WHEN THE OVEN IS SET AT ANY LEVEL EXCEPT MAXIMUM.

• The micom controller controls the ON-OFF time of relay 2 by the applied signal to vary the average output power of microwave oven as POWER LEVEL. (refer to page 1-1)

• One complete cycle of the relay 2 is 22 seconds.

WHEN THE DOOR IS OPENED DURING COOKING

• Both the primary switch and relay 2 cut off the primary winding voltage of the high voltage transformer.

• ON-OFF of relay 2 is coupled electrically with opening and closing of the secondary switch.

• When the door is opened, the secondary switch is opened and when the door is closed, the secondary switch is closed.

• The cooking time stops counting down.

• Relay stops functioning.

• As the door is opened, if the contact of primary switch and relay 2 and/or secondary switch fail to open, the fuse opens due to the large current surge caused by the monitor switch activation, which, in turn, stops magnetron oscillation.

4-4

FUSE

H.V.

TRANS-

FORMER

RELAY 2

MICOM CONTROLLER

SECONDARY SWITCH

PRIMARY

SWITCH

MONITOR

SWITCH

PRIMARY

FUSE

SWITCH

MONITOR

SWITCH

RELAY 2

MICOM CONTROLLER

H.V.

TRANS-

FORMER

SECONDARY SWITCH

CAUTIONS

• Be sure to check microwave leakage prior to servicing the oven if the oven is operative prior to servicing.

• The service personnel should inform the manufacture importer, or assembler of any certified oven unit found to have a microwave emission level in excess of 5 mW/cm2and should repair any

unit found to have excessive emission levels at no cost to the owner and should ascertain the cause of the excessive leakage. The service personnel should instruct the owner not to use the unit until the oven has been brought into compliance.

• If the oven operates with the door open, the service personnel should:

- Tell the user not to operate the oven.

- Contact the manufacturer.

• The service personnel should check all surface and vent openings for microwave leakage.

• Check for microwave leakage after every servicing. The power density of the microwave radiation leakage emitted by the microwave oven should not exceed 4 mW/cm2. Always start measuring of an unknown field to assure safety for operating personnel from radiation leakage.

MEASURING MICROWAVE ENERGY LEAKAGE

• Pour 275±15cc of 20±5°C (68±9°F) water in a beaker which is graduated to 600 cc, and place the beaker on the center of the turntable.

• Set the energy leakage monitor to 2,450 MHz and use it following the manufacturer's recommended test procedure to assure correct result.

• When measuring the leakage, always use the 2-inch (5cm) spacer supplied with the probe.

• Operate the oven at its maximum output.

• Measure the microwave radiation using and electromagnetic radiation monitor by holding the probe perpendicular to the surface being measured

Move probe along shaded area

Probe scanning speed Less than 2.5 cm/sec (1 in/sec)

5-1

SERVICE INFORMATION

TOOLS AND MEASURING INSTRUMENTS

MICROWAVE LEAKAGE TEST

NECESSARY TOOLS

Tools normally used for TV servicing are sufficient. Standard tools are listed below.

• Diagonal pliers

• Long nose pliers

• Phillips screwdriver

• Flat blade screwdriver

• Wrench (size 5mm)

• Nutdriver (size 5mm)

• Adjustable wrench

• Soldering iron

• Solder

• Vinyl insulation tape

• Polishing cloth

NECESSARY MEASURING INSTRUMENTS

• TESTER (VOLTS-DC, AC, Ohmmeter)

• Microwave survey meter

- Holaday HI-1500 HI-1501

- Narda 8100

8200

• Inch scale

• 600 cc non conductive material beaker (glass or plastic), inside diameter: approx. 8.5 cm (3

in.)

• Cylindrical and made of borosilicate glass vessel. max. thickness: 3 mm outside diameter: approx. 190mm height: approx. 90mm

• Glass thermometer: 100°C or 212°F (1 deg scale)

MEASUREMENT WITH OUTER CASE REMOVED

• When you replace the magnetron, measure for microwave energy leakage before the outer case is installed and after all necessary components are replaced or adjusted.

Special care should be taken in measuring the

following parts. (Circled area of Fig. below)

- Around the magnetron

- The waveguide

MEASUREMENT WITH A FULLY ASSEMBLED OVEN

• After all components, including the outer case, are fully assembled, measure for microwave energy leakage around the door viewing window, the exhaust opening, and air inlet openings.

• Microwave energy leakage must not exceed the values prescribed below.

NOTE: Leakage with the outer case removed less than

5 mW/cm.sq. Leakage for a fully assembled oven (Before the latch switch (primary) is interrupted) with the door in a slightly opened position-less than 2 mW/cm.sq.

NOTES WHEN MEASURING

• Do not exceed meter full scale deflection.

• The test probe must be removed no faster than 1 inch/sec (2.5 cm/sec) along the shaded area, otherwise a false reading may result.

• The test probe must be held with the grip portion of the handle. A false reading may result if the operator's hand is between the handle and the probe.

• When testing near a corner of the door, keep the probe perpendicular to the surface making sure the probe horizontally along the oven surface; this may cause probe damage.

RECORD KEEPING AND NOTIFICATION AFTER MEASUREMENT

• After adjustment and repair of any microwave energy interruption or microwave energy blocking device, record the measured values for future reference. Also enter the information on the service invoice.

• The microwave energy leakage should not be more than 4 mW/cm.sq. after determining that all parts are in good condition, functioning properly and genuine replacement parts which are listed in this manual have been used.

• At least once a year, have the electromagnetic energy leakage monitor checked for calibration by its manufacturer.

5-2

WARNING : AVOID CONTACTING ANY

HIGH VOLTAGE PARTS

• Microwave power output measurement is made with the microwave oven supplied at its rated voltage and operated at its maximum microwave power setting with a load of (1000±5) g of potable water.

• The water is contained in a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and an outside diameter of approximately 190mm.

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

• The initial temperature (T1) of the water is (10±2)°C It is measured immediately before the water is added to the vessel. After addition of the water to the vessel, the load is immediately placed on the center of the turntable which is in the lowest position and the microwave power switched on.

• The time T for the temperature of the water to rise by a value ∆ T of (10±2)° is measured, where T is the time in seconds and ∆T is the temperature rise. The initial and final water temperatures are selected so that the maximum difference between the final water temperature and the ambient temperature is 5°.

• The microwave power output P in watts is calculated from the following formula :

4187 x (∆T)

is measured while the microwave generator is operating at full power. Magnetron filament heat-up time is not included. (about 3 sec)

• The water is stirred to equalize temperature throughout the vessel, prior to measuring the final water temperature.

• Stirring devices and measuring instruments are selected in order to minimize addition or removal of heat.

A. OUTER CASE REMOVAL

1) Disconnect the power supply cord from the outlet.

2) Remove the screws from the rear of the case. The outer case must be moved backward to be lifted off.

B. POWER SUPPLY CORD

1) Remove the outer case.

2) Disconnect two terminals and remove one screw of the ground terminal.

C. CONTROL PANEL ASSEMBLY

1) Open the door.

2) Disconnect the leadwire from RELAY (RY2) of the

PCB SUB ASSEMBLY.

3) Disconnect the leadwire from connector (CN1) of the PCB SUB ASSEMBLY.

4) Lift up and pull out control panel assembly carefully

from the cavity.

CAUTION: DISCHARGE THE HIGH VOLTAGE

CAPACITOR BEFORE SERVICING

(refer to page 2-1)

5-3

WATER LOAD

TURNTABLE

MEASUREMENT OF MICROWAVE POWER OUTPUT

P =

Remove the screw

Lift up and pull out control panel

DISASSEMBLY AND ADJUSTMENT

securing screw

ground screw

D. PCB ASSEMBLY REMOVAL

1) Remove the control panel assembly from the cavity. (Refer to control panel assembly removal on previous page.)

2) Remove screws which hold the

PCB SUB

ASSEMBLY

to the control panel.

3) Disconnect the flat cable from the

PCB SUB

ASSEMBLY

and take off the

PCB SUB ASSEMBLY.

E. DOOR MAIN ASSEMBLY REMOVAL

1) Open the door.

2) Remove the choke cover very carefully with a flat-blade

screwdriver.

CAUTION: Be careful not to damage door seal plate

by screwdriver.

3) Lift up and push the door.

NOTE:

1. After replacing the door, be sure to check that the

primary switch, monitor switch, and secondary switch operate normally.

2. After replacing the door, check for microwave energy

leakage with a survey meter. Microwave energy must be below the limit of 4 mW/cm. (with a 275 ml water load)

3. When mounting the door assembly to the oven

assembly, be sure to adjust the door assembly parallel to the chassis. Also, adjust so the door has no play between the inner door surface and oven frame assembly. If the door assembly is not mounted properly, microwaves may leak from the clearance between the door and the oven.

5-4

Door seal plate

Remove door

Remove choke cover

Spacer

Control Panel

PCB Sub Asm

5-5

F. MAGNETRON REMOVAL

1) Disconnect the leadwire from the magnetron.

2) Carefully remove the mounting screws holding the magnetron and the waveguide.

3) Remove the magnetron ASSEMBLY until the tube is clear from the waveguide.

NOTE:

1. When removing the magnetron, make sure its dome does not hit any adjacent parts, or it may be damaged.

2. When replacing the magnetron, be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition.

3. After replacing the magnetron, check for microwave leakage with a survey meter around the magnetron. Microwave energy must be below the

limit of 5 mW/cm2. (With a 275 ml. water load).

Make sure that gasket is rigidly attached to the

magnetron. To prevent microwave leakage,

tighten the mounting screws properly, making sure there is no gap between the waveguide and the magnetron.

G. REMOVING THE TURNTABLE MOTOR

1) Remove the turntable and rotating ring.

2) Lay the unit down on its back.

3) Remove the turntable motor cover. The turntable base cover is easily removed by

pinching the eight parts with a wire cutting.

4) Disconnect the leadwire from the turntable motor

terminals.

5) Remove the screw securing the turntable motor to

the oven cavity ASSEMBLY.

6) After repairing the motor, rotate the removed

turntable motor cover.

7) Fit the turntable motor cover’s projecting part to the

base plate slit.

NOTE:

1. Remove the wire lead from the turntable motor

VERY CAREFULLY.

2. Be sure to grasp the connector, not the wires, when

removing.

Magnetron

Air Duct

Waveguide

Magnetron Gasket

Magnetron

Dome Waveguide

Bracket

Turntable

Motor

Wire Leads

H. HIGH VOLTAGE TRANSFORMER

REMOVAL

1) Discharge the high voltage capacitor.

2) Disconnect the leadwire from magnetron, high voltage transformer, and capacitor.

3) Remove the screw holding the high voltage transformer to the baseplate.

I. FAN MOTOR ASSEMBLY REMOVAL

1) Discharge the high voltage capacitor.

2) Disconnect the leadwire from fan motor and high voltage capacitor.

3) Remove the two screws holding the the suction guide ASSEMBLY to the oven cavity.

4) Remove the two screws holding the fan motor ASSEMBLY to the suction guide ASSEMBLY.

J. HIGH VOLTAGE CAPACITOR AND

DIODE REMOVAL

1) Discharge the high voltage capacitor.

2) Disconnect the leadwire from fan motor and high voltage capacitor.

3) Remove the screw holding the suction guide ASSEMBLY to the oven cavity.

4) Remove the screw holding the high voltage capacitor bracket and remove the high voltage diode earth screw.

K. INTERLOCK SYSTEM

1) INTERLOCK MECHANISM The door lock mechanism is a device which has

been specially designed to eliminate completely microwave activity when the door is opened during cooking and thus to prevent the danger resulting from the microwave leakage.

2) MOUNTING OF THE PRIMARY/MONITOR/ SECONDARY SWITCHES TO THE LATCH BOARD

3) INSTALLATION AND ADJUSTMENT OF THE LATCH BOARD TO THE OVEN ASSEMBLY

• Mount the latch board to the oven assembly.

• Adjust the latch board in the arrow direction so that

oven door will not have any play in it when the door is closed.

• Tighten the mounting screw.

• Check for play in the door by pushing the door

release button. Door movement should be less than 0.5 mm. (1/64 inch)

Don't push the door release button while making this

adjustment. Make sure that the latch moves smoothly after adjustment is completed and that the screws are tight. Make sure the primary, monitor, and secondary switches operate properly by following the continuity test procedure.

5-6

PRIMARY SWITCH

ADJUSTMENT DIRECTION

MONITOR SWITCH

SECONDARY SWITCH

H.V. Transformer

Fan Motor ASS'Y

Suction Guide

H.V. Capacitor

H.V. Diode

A. PRIMARY INTERLOCK SWITCH TEST

When the door release button is depressed slowly with the door closed, an audible click should be heard at the same time or successively at intervals. When the button is released slowly, the latches should activate the switches with an audible click. If the latches do not activate the switches when the door is closed, the switches should be a adjusted in accordance with the adjustment procedure. Disconnect the wire lead from the primary switch. Connect the ohmmeter leads to the common (COM) and normally open (NO) terminal of the switch. The meter should indicate an open circuit in the door open condition. When the door is closed, the meter should indicate a closed circuit. When the primary switch operation is abnormal, make the necessary adjustment or replace the switch only with the same type of switch.

B. SECONDARY INTERLOCK SWITCH TEST

Disconnect the wire lead from the secondary switch. Connect the ohmmeter leads to the common (COM) and normally open (NO) terminals of the switch. The meter should indicate a open circuit in the door open condition. When the door is closed, meter should indicate an closed circuit. When the secondary switch operation is abnormal, make the necessary adjustment or replace the switch only with the same type of switch.

C. MONITOR SWITCH TEST

Disconnect the wire lead from the monitor switch. Connect the ohmmeter leads to the common (COM) and normally closed (NC) terminals of the switch. The meter should indicate closed circuit in the door open condition. When the door is closed, meter should indicate an open circuit. When the monitor switch operation is abnormal, replace with the same type of switch.

NOTE: After repairing the door or the interlock system, it is necessary to do this continuity test before operating the oven.

5-7

WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION

EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS. ALL THESE SWITCHES MUST BE REPLACED AT THE SAME TIME.

TYPE NO. SZM-V 16-FA-63 OR VP-533A-OF FOR PRIMARY SWITCH TYPE NO. SZM-V 16-FA-62 OR VP-532A-OF FOR MONITOR SWITCH TYPE NO. SZM-V 16-FA-63 OR VP-533A-OF FOR SECONDARY SWITCH

COMPONENTS TEST PROCEDURE RESULTS

SWITCHES Check for continuity of the Door Door (Wire leads removed) switch with an Ohm-meter open closed

Primary Switch

Monitor Switch

Secondary Switch

NOTE : After checking for the continuity of switches, make sure that they are

connected correctly.

INTERLOCK CONTINUITY TEST

COM

5-8

CAUTIONS

1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. (SEE PAGE 2-1)

2. ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER OF WATER IN CONTAINER) IN THE OVEN.

COMPONENTS TEST PROCEDURE RESULTS

HIGH VOLTAGE TRANSFORMER (Wire leads removed)

MAGNETRON (Wire leads removed)

1. Measure the resistance. (Ohm-meter scale: Rx1 and Rx100)

• Primary winding

• Secondary winding

• Filament winding

2. Measure the resistance. (Ohm-meter scale: Rx1000)

• Primary winding to ground

• Filament winding to ground

1. Measure the resistance. (Ohm-meter scale: Rx1)

• Filament terminal

2. Measure the resistance. (Ohm-meter scale: Rx1000)

• Filament to chassis

Approx.: 0.2 ~ 0.4 ohm Approx.: 60 ~ 90 ohm Less than: 1 ohm

Normal: Infinite Normal: Infinite

Normal: Less than 1 ohm

Normal: Infinite

FILAMENT WINDING

PRIMARY TERMINAL

COMPONENT TEST PROCEDURE

5-9

COMPONENTS TEST PROCEDURE RESULTS

HIGH VOLTAGE CAPACITOR

HIGH VOLTAGE DIODE

NOTE : Some inexpensive meters may indicate infinite resistance in both direction.

Measure the resistance. (Ohm-meter scale: Rx1000)

• Terminal to terminal.

Measure the resistance. (Ohm-meter scale: Rx1000)

• Terminal to case.

Measure the continuity (Forward). (Ohm-meter scale: Rx10000)

Measure the continuity (Reverse). (Ohm-meter scale: Rx10000)

Normal: Momentarily indicates

several ohms, and then gradually returns to infinite.

Normal: Infinite.

Normal: Continuity. Abnormal: Infinite.

Normal: Infinite. Abnormal: Continuity.

NOTE: When testing the magnetron, be sure to install the magnetron gasket

in the correct position and be sure that the gasket is in good condition.

Antenna Gasket

Chassis

Filament

5-10

COMPONENTS TEST PROCEDURE RESULTS

HEATER ELEMENT (Wire leads removed.)

MAGNETRON THERMOSTAT

OVEN THERMOSTAT

FUSE (Wire leads removed.)

Measure the resistance. (Multi-meter scale:RX1)

Measure the resistance with 500V-100M Ohm insulation resistance meter.

Check the continuity of the switch with an Multi-meter

Normal: Gill heater Approx.15 ½ (at 20-30ûC)

Normal: more than 1.0M ½

NOTE: Make sure heater is fully cooled when tested.

NOTE: If the fuse is blown, check primary, the secondary, the monitor

switches, H.V.D and H.V.C before replacing the fuse. If the fuse is blown by improper switch operation replace the defective switch and the fuse at the same time. Replace just the fuse if the switches operate normally.

0ûC~Approx 180ûC Approx 180ûC

0ûC~Approx 145ûC Approx 145ûC

Normal Abnormal

5-11

COMPONENTS TEST PROCEDURE RESULTS

RELAY 2

FAN MOTOR (Wire leads removed)

TURNTABLE MOTOR (Wire leads removed)

Check for continuity of relay 2 with an ohm-meter. (Remove wire leads from relay 2 and operate the unit.)

Measure the resistance. (Ohm-meter scale: R x 1)

Measure the resistance. (Ohm-meter scale: R x 1 )

POWER LEVEL

1 4 sec 18 sec 2 6 sec 16 sec 3 8 sec 14 sec 4 10 sec 12 sec 5 12 sec 10 sec 6 14 sec 8 sec 7 16 sec 6 sec 8 18 sec 4 sec 9 20 sec 2 sec

10 22 sec 0 sec

Normal: A: Approx. 85 ~ 100 ohm. B: Approx. 10 ~ 25 ohm.

Abnormal: Infinite or several

ohms.

Normal: Approx.100~150 ohm Abnormal: Infinite or several

ohm.

NOTE : • A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS

SERVICED FOR ANY REASON.

• MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.

• WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES.

Relay 2

TROUBLESHOOTING

WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.

5-12

CAUTIONS

1. Check grounding before checking for trouble.

2. Be careful of the high voltage circuit.

3. Discharge the high voltage capacitor. (See page 2-1)

4. When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire from these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.

5. Do not touch any part of the circuit on the PCB since static electric discharge may damage this control panel. Always touch yourself to ground while working on this panel to discharge any static charge built up in your body. (Micom model only)

CONDITION

Microwave oven

does not work.

Inserting many plugs into one outlet and using them at the same time. (blown fuse or breaker)

Microwave oven plug is not inserted tightly.

Output power is too low. Low AC input voltage.

Food temperature is too low.

Using metallic ware and allowing it to touch the oven wall.

Sparks occur.

Inconsistent intensity of microwave by their characteristics.

1. Use plastic wrap or lid.

2. Stir once or twice while cooking soup, cocoa or milk, etc.

Uneven cooking.

Ceramic ware trimmed in gold or silver powder is used.

Avoid using other electrical appliances when you use the microwave oven.

Insert microwave oven plug securely.

Use the microwave oven at adequate line voltage.

This may not be a defect. It is possible that the food should be cooked for a longer time period.

Do not use metallic ware for cooking except that noted in the cooking guide.

Do not use any type of cookware with metallic trimming.

CAUSE REMEDY

1. Incomplete segments.

• Segment missing.

• Partial segment missing.

• Digit flickering (NOTE: Slight flickering is normal.)

2. Colon does not turn on or blink.

3. A distinct change in the brightness of one or more numbers in display.

4. One or more digits in the display are not lighting.

5. Display indicates a number different from one touched, for example, key in 5 and 3 appears in the display.

6. Specific numbers (for example 7 or 9) will not display when key pad is touched.

7. Display does not count down with time blinking or up with clock operation.

8. Display obviously jumps in time while counting down.

9. Display counts down too fast while cooking.

10. Each indicator light does not turn on after setting cooking cycle.

11. Display time of day does not reappear when cooking is finished.

5-13

(TROUBLE 1)

The following visual conditions indicate a probable defective control circuit.

CONDITION CHECK RESULT CAUSE REMEDY

1. No input can be programmed.

Continuity

No continuity

Defective PCB assembly.

Loose connection.

Replace PCB assembly.

Connect them tightly.

Check the connection between membrane key assembly and PCB assembly.

2. Some inputs cannot be programmed.

3. Display shows a number or figure different from one touched.

4. Random programming when touching other pads.

5. Display is fixed at some figure and can not accept any input.

Everything works as specified.

Still have trouble.

Defective key membrane assembly.

Defective PCB assembly.

Replace key membrane assembly.

Replace PCB assembly.

Replace key membrane assembly and check operation.

5-14

CONDITION CHECK RESULT CAUSE REMEDY

1. Fuse blows. Continuity.

No continuity.

Continuity.

Shorted contact at the primary switch.

Replace fuse, primary, monitor, secondary switches, and RELAY(RY2) of P.C.B Assembly.

No continuity.

Normal.

Defective high voltage capacitor.

Replace high voltage capacitor.

Fuse blows again

Defective high voltage transformer.

Replace high voltage transformer.

Malfunction of the monitor switch.

Replace fuse, primary, monitor, secondary switches, and RELAY(RY2) of P.C.B Assembly.

Check continuity of monitor switch (with door closed).

Check continuity of primary switch (with door opened).

Disconnect one side of the wire lead connected from transformer to the high voltage capacitor and operate the unit.

Replace fuse

Continuity.

Malfunction of secondary switch.

Replace fuse, primary, monitor, secondary switches, and RELAY(RY2) of P.C.B Assembly.

No continuity.

Check continuity of secondary switch (with door opened).

2. Fuse does not

blow.

No continuity.

Continuity.

No continuity.

Defective power supply cord.

Replace power supply cord.

Defective thermostat.

Replace thermostat.

Check continuity of thermostat.

Check continuity of power supply cord.

(TROUBLE 2)

Oven does not operate at all, display window does not display any figures, and no input is accepted.

NOTE : All these switches must be replaced at the same time. Refer to page 5-7, 5-8

5-15

CONDITION CHECK RESULT CAUSE REMEDY

1. Setting time

does not count down when touching START pad.

2. Fan motor or oven lamp do not turn on.

No continuity.

Continuity.

Continuity

Defective PCB assembly.

Loose connection.

Replace PCB assembly.

Connect them tightly.

No continuity

Abnormal

Check fan motor.

Defective fan motor. Replace fan motor.

Abnormal

Normal

Check oven lamp.

Defective oven lamp. Replace oven lamp.

Defective secondary switch.

Replace secondary switch.

Check continuity of secondary switch (with door closed).

Check the connection between CN1 connector and PCB assembly.

(TROUBLE 3)

Display shows all figures set, but oven does not start cooking while desired

program times are set and START pad is touched.

(TROUBLE 4) Oven seems to be operating but little heat is produced in oven load.

NOTE :

Simple test of power output-conducted by heating one liter water for one min. if available. Minimum 8.5°C temperature rise is normal condition.

CONDITION CHECK RESULT CAUSE REMEDY

Output is low

Lower than 90% of rating voltage.

Normal

Abnormal

Defective PCB assembly.

Replace PCB assembly.

Normal

Abnormal

Measure the output power.

Defective magnetron.

Replace magnetron.

Decrease in power source voltage with load.

Suggest customer contact local electric power utility company or qualified electrician.

Check the power source voltage.

Disconnect the wire leads from relay 2 and check on and off time with multitester.

5-16

CONDITION CHECK RESULT CAUSE REMEDY

No microwave oscillation.

No continuity.

Continuity.

Abnormal

Defective high voltage transformer.

Replace high voltage transformer.

Normal

Defective PCB assembly.

Replace PCB assembly.

Disconnect the wire leads from relay 2 and check continuity of relay 2. (Operate the unit)

Check high voltage transformer

Output is full power when you set lower power level.

Abnormal.

Defective PCB assembly.

Replace PCB assembly.

Disconnect the wire leads from relay 2 and check continuity relay 2. (Operate the unit)

Abnormal

Defective high voltage capacitor.

Replace high voltage capacitor.

Normal

Check high voltage capacitor.

Abnormal

Defective high voltage diode.

Replace high voltage diode.

Normal

Check high voltage diode.

Abnormal

Defective magnetron.

Replace magnetron.

Check magnetron.

(TROUBLE 5)

No microwave oscillation even though oven lamp and fan motor run. (Display operates properly)

NOTE : • Make sure the wire leads are in the correct position.

• When removing the wire leads from the parts, be sure to grasp the connector, not the wires.

• When removing the magnetron, be sure to install the magnetron gasket in the correct position and in good condition.

DOOR PARTS

LATCH BOARD PARTS

CONTROL PANEL PARTS

INTERIOR PARTS

BASE PLATE PARTS

OVEN CAVITY PARTS

6-1

EXPLODED VIEW

INTRODUCTION

6-2

13213A

13552A

13536A

14026A

14970A

13581A

15006A

14890A

13720D

DOOR PARTS

6-3

24510L

268711

WTT028

WTP004

268712

250202

250205

249401

250204

243501

250201

23790D

23572A

250203

24970A

24781S

CONTROLLER PARTS

6-4

33052M

948504

340511

36549S

WTP

013

948501

WTT

010

WTT021

33112U

WSZ184

35300S

WNZ015

33550H

34036W

33390G

35889A

33390M

34370T

35026G

OVEN CAVITY PARTS

6-5

43501A

WSZ

085

466001

466003

466001

43500A

LATCH BOARD PARTS

6-6

568771

WSZ

002

WSZ

002

WSZ

002

WSZ

002

WTT

028

54826A

56930V

55006F

56549F

54974S

WTT

037

55900A

WSZ002

55262A

56324A

35012A

948502

54810C

WTT

028

CZZH

56851D

FZZA

56912B

34930W

56411A

INTERIOR PARTS

6-7

63302L

63303L

56170D

63302R

948503

WSZ

002

WTT

021

63303R

WTT

028

647781

368771

BASE PLATE PARTS

7-1

REPLACEMENT PARTS LIST

LOC.

NO. *01 3828W5A1811 MANUAL,OWNERS R *02 3828W5S1726 MANUAL,SERVICE R *05 3850W3D065A LABEL,COOKING GUIDE R 13213A 3213W1A028B DOOR FRAME ASSEMBLY R 13536A 3536WRA001L SEAL TAPE R 13552A 3552W1A037A CHOKE COVER R 13581A 3581W1A250B DOOR ASSEMBLY R 13720D 3720W0D180C PANEL,DOOR R 14026A 4026W2A012A LATCH R 14890A 4890W1D039W GLASS R 14970A 4970WRA001C SPRING R 15006A 5006W3A017A CAP,CHOKE COVER R 23572A 3572W0A221C PANEL,CONTROL R 23790D 3790W2A001B WINDOW,DIGITRON R 243501 4350W3A022A RING R 24510L 4510W3L004A LEVER R 24781S 4781W1S086H CONTROLLER ASSEMBLY,SEMI MICOM R 249401 4940W3A020A KNOB R 24970A 4B72023A SPRING R 250201 5020W2A159A BUTTON B 8ABS0160958 250202 5020W2A158A BUTTON R 250203 5020W3A141A BUTTON B 250204 5020W2A084A BUTTON R 250205 5020W3A140A BUTTON B 268711 6871W2S234B PWB(PCB) ASSEMBLY,SUB R 268712 6871W2S233A PWB(PCB) ASSEMBLY,SUB R 33052M 3052W3M011C CANOPY,MICA R 33112U 3112W1U015S OUT CASE,U-BENDING R 33390G 3390W1G010A TRAY,GLASS R 33390M 3390W1A011A TRAY,METAL R 33550H 3550W1A084B COVER,HEATER R 34036W 4036W3W001A SEAL R 340511 4051W3A001A RIVET ASSEMBLY R 34370T 4370W3A003A SHAFT,TURN TABLE R 34930W 4B72510F HOLDER,WIRE R 35012A 5012W3A020A INSULATOR R 35026G 5026W1A037E SHELF R 35300S 5300W1S002C HEATER,SHEATH R 35889A 5889W2A005J ROTATING RING ASSEMBLY R 36549S 6549W1S002A MOTOR(CIRC),SYNCHRONOUS R 6549W1S016A 368771 4B75297B HARNESS R 43500A 3500W1A004A BOARD,LATCH R 43501A 3501W1A003H BOARD ASSEMBLY,LATCH R 466001 3B73362F SWITCH,MICRO R 6600W1K004C 466001 3B73362F SWITCH,MICRO R 3B73362E

PART NO. DESCRIPTION SVC ALTER

R: SERVICE PARTS

7-2

LOC.

NO. 466003 3B73361E SWITCH,MICRO R 6600W1K004B 466003 3B73361E SWITCH,MICRO R 3B73361D 50CZZH 6120W3H003F CAPACITOR,DRAWING[HIGH VOLTAGE] R 0CZZW1H002F 50FZZA 3B74133K FUSE,DRAWING R 54810C 4810W4C003C BRACKET,CAPACITOR R 54826A 4B70774A SPACER R 54974S 4974W1S010A GUIDE,SUCTION R 55006F 5006WRA002A CAP,FUSE R 55262A 5262W2A041A DUCT R 55900A 2B72125B FAN R 56170D 6170W1D061A TRANSFORMER,HIGH VOLTAGE R 6170W1D023B 56170D 6170W1D061A TRANSFORMER,HIGH VOLTAGE R 6170W1D050A 56324A 6324W1A001B MAGNETRON R 56411A 6411W1A022B POWER CORD ASSEMBLY R 56549F 6549W1F005B MOTOR(CIRC),FAN R 6549W1F007B 56851D 6021W3B001M CABLE ASSEMBLY R 6021W3B001K 568771 6877W1A283B HARNESS R 56912B 6912W3B002G LAMP,DRAWING R 56930V 6930WRT001B THERMOSTAT R 63302L 3302W1A036G BASE PLATE R 63302R 3302W1A035G BASE PLATE R 63303L 3303W1A028M BASE PLATE ASSEMBLY R 63303R 3303W2A004K BASE PLATE ASSEMBLY R 647781 4B73900A LEG R 948501 4850W4C001D CUSHION R 948502 4850W4C001J CUSHION R 948503 3B72244G CUSHION R 948504 3B72244C CUSHION R WNZ015 4B71028B NUT,DRAWING R WSZ002 1SBF0402418 SCREW TAP TITE(S),BINDING HEAD R WSZ085 4B70188C SCREW,DRAWING R WSZ184 1SZZW2Z001E SCREW,DRAWING R WTP004 1TPL0302418 SCREW TAPPING,PAN HEAD R WTP013 1TPL0402418 SCREW TAPPING,PAN HEAD R WTT010 1TTG0402422 SCREW TAPPING,TRUSS HEAD R WTT021 1TTL0402418 SCREW TAPPING,TRUSS HEAD R WTT028 1TTL0402818 SCREW TAPPING,TRUSS HEAD R WTT037 1TTL0403818 SCREW TAPPING,TRUSS HEAD R

PART NO. DESCRIPTION SVC ALTER

R: SERVICE PARTS

8-1

SCHEMATIC DIAGRAM OF P.C.B.

8-2

PRINTED CIRCUIT BOARD

9-1

P.C.B PARTS LIST

LOC.

PART NO. DESCRIPTION SPECIFICATION SVC ALTER

NO. AR3 0RZ4702G610 RESISTOR,DRAWING 47KOHM 1/4W 5% 3216 BULK 8 PIN R C01 0CK1040K949 CAPACITOR,FIXED CERAMIC 0.1UF D 50V 80%,-20% F(Y5V) TA52 R C02 0CE2276H638 CAPACITOR,FIXED ELECTROLYTIC 220UF SMS,SG 25V 20% FM5 TP 5 R C03 0CE2276H638 CAPACITOR,FIXED ELECTROLYTIC 220UF SMS,SG 25V 20% FM5 TP 5 R C03 0CE2276H638 CAPACITOR,FIXED ELECTROLYTIC 220UF SMS,SG 25V 20% FM5 TP 5 R C04 0CE4756K638 CAPACITOR,FIXED ELECTROLYTIC 4.7UF SMS,SG(HR) 50V 20% FM5 TP 5 R C05 0CK2230K949 CAPACITOR,FIXED CERAMIC 22NF D 50V 80%,-20% F(Y5V) TA52 R C06 0CK1040K949 CAPACITOR,FIXED CERAMIC 0.1UF D 50V 80%,-20% F(Y5V) TA52 R C10 0CK2230K949 CAPACITOR,FIXED CERAMIC 22NF D 50V 80%,-20% F(Y5V) TA52 R C11 0CE4766K638 CAPACITOR,FIXED ELECTROLYTIC 47UF SMS,SG 50V 20% FM5 TP 5 R C20 0CK2230K949 CAPACITOR,FIXED CERAMIC 22NF D 50V 80%,-20% F(Y5V) TA52 R C21 0CK2230K949 CAPACITOR,FIXED CERAMIC 22NF D 50V 80%,-20% F(Y5V) TA52 R C25 0CK2230K949 CAPACITOR,FIXED CERAMIC 22NF D 50V 80%,-20% F(Y5V) TA52 R C80 0CK2210K519 CAPACITOR,FIXED CERAMIC 220PF D 50V 10% B(Y5P) TA52 R C81 0CK2210K519 CAPACITOR,FIXED CERAMIC 220PF D 50V 10% B(Y5P) TA52 R C82 0CK2210K519 CAPACITOR,FIXED CERAMIC 220PF D 50V 10% B(Y5P) TA52 R C84 0CK2210K519 CAPACITOR,FIXED CERAMIC 220PF D 50V 10% B(Y5P) TA52 R CU4 4850W4C001D CUSHION 9T 15W 40L RUBBER R D01 0DD400209AD DIODE,SWITCHING 1N4002 PYUNG CHANG TP52 DO41 R D02 0DD400209AD DIODE,SWITCHING 1N4002 PYUNG CHANG TP52 DO41 R D03 0DD400209AD DIODE,SWITCHING 1N4002 PYUNG CHANG TP52 DO41 R D10 0DD400209AD DIODE,SWITCHING 1N4002 PYUNG CHANG TP52 DO41 R D20 0DD414809AD DIODE,SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R D30 0DD414809AD DIODE,SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R D31 0DD414809AD DIODE,SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R D32 0DD414809AD DIODE,SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R D33 0DD414809AD DIODE,SWITCHING 1N4148 PYUNG CHANG TP52 DO35 R DP1 6302W5A015A DIGITRON HNM-07SS30 7 AMB-314XF W/POOL R EN01 6024WRYA06B VOLUME,ROTARY ES1005A SEIL 24CLICK LGEAZ R LED1 0DLZW5A003A LED LITEON LTL-12BGE-1 BK GREEN NA R Q01 0TR126609AA TRANSISTOR,BIPOLARS KEC KTA1266-Y(KTA1015) TP TO92 R Q02 0TR126609AA TRANSISTOR,BIPOLARS KEC KTA1266-Y(KTA1015) TP TO92 R Q20 0TR107009AD TRANSISTOR,BIPOLARS KEC KRC 107M TP TO92M 50V 100MA R Q30 0TR105009AB TRANSISTOR,BIPOLARS KEC KRC105M(KRC1205) TP TO92 R Q31 0TR105009AB TRANSISTOR,BIPOLARS KEC KRC105M(KRC1205) TP TO92 R Q33 0TR105009AB TRANSISTOR,BIPOLARS KEC KRC105M(KRC1205) TP TO92 R Q50 0TR107009AD TRANSISTOR,BIPOLARS KEC KRC 107M TP TO92M 50V 100MA R Q80 0TR107009AD TRANSISTOR,BIPOLARS KEC KRC 107M TP TO92M 50V 100MA R R01 0RD1501G609 RESISTOR,FIXED CARBON FILM 1.5K OHM 1/4 W 5% TA52 R R01 0RD1501F609 RESISTOR,FIXED CARBON FILM 1.5K OHM 1/6 W 5% TA52 R R02 0RD1501G609 RESISTOR,FIXED CARBON FILM 1.5K OHM 1/4 W 5% TA52 R R02 0RD4701F609 RESISTOR,FIXED CARBON FILM 4.7K OHM 1/6 W 5% TA52 R R03 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R04 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R10 0RD0202F609 RESISTOR,FIXED CARBON FILM 20 OHM 1/6 W 5% TA52 R R11 0RD0102F609 RESISTOR,FIXED CARBON FILM 10 OHM 1/6 W 5% TA52 R R12 0RD0102F609 RESISTOR,FIXED CARBON FILM 10 OHM 1/6 W 5% TA52 R R13 0RD1003F609 RESISTOR,FIXED CARBON FILM 100K OHM 1/6 W 5% TA52 R R20 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R21 0RD2202F609 RESISTOR,FIXED CARBON FILM 22K OHM 1/6 W 5% TA52 R R22 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R25 0RD3901F609 RESISTOR,FIXED CARBON FILM 3.9K OHM 1/6 W 5% TA52 R

R: SERVICE PARTS

9-2

LOC.

PART NO. DESCRIPTION SPECIFICATION SVC ALTER

NO. R26 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R50 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R51 0RD2700F609 RESISTOR,FIXED CARBON FILM 270 OHM 1/6 W 5% TA52 R R55 0RD1004F609 RESISTOR,FIXED CARBON FILM 1M OHM 1/6 W 5% TA52 R R70 0RD2202F609 RESISTOR,FIXED CARBON FILM 22K OHM 1/6 W 5% TA52 R R71 0RD1202F609 RESISTOR,FIXED CARBON FILM 12K OHM 1/6 W 5% TA52 R R73 0RD4702F609 RESISTOR,FIXED CARBON FILM 47K OHM 1/6 W 5% TA52 R R75 0RD4702F609 RESISTOR,FIXED CARBON FILM 47K OHM 1/6 W 5% TA52 R R80 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R81 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R82 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R83 0RD4701F609 RESISTOR,FIXED CARBON FILM 4.7K OHM 1/6 W 5% TA52 R R84 0RD1001F609 RESISTOR,FIXED CARBON FILM 1K OHM 1/6 W 5% TA52 R R90 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R91 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R92 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R93 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R94 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R95 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R R96 0RD5601F609 RESISTOR,FIXED CARBON FILM 5.6K OHM 1/6 W 5% TA52 R RY1 6920W5A008A RELAY DQ1U DAIICHI 250VAC 3A 12VDC R 6920W5A007A RY1 6920W5A008A RELAY DQ1U DAIICHI 250VAC 3A 12VDC R 6920W2D010B RY1 6920W5A008A RELAY DQ1U DAIICHI 250VAC 3A 12VDC R 6920W2D010A RY3 6920W2YD04A RELAY OZF-S-112LM1P OEG 240VAC 16A R 6920W5A012A SW01