Goldstar MV-1155W Service Manual

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MICROW AVE OVEN

SER VICE MANUAL

MODEL : MV-1155W

CAUTION

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

P/NO : 3828W5S0807

Printed in Korea

CAUTION

WARNING TO SERVICE TECHNICIANS

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 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.

e. A Microwave leakage check to verify compliance with the Federal performanc Standard

should be performed on each oven prior to release to the owner.

● Proper operation of the microwave ovens requires that the magnetron be assembled to the wave

guide 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.

● Routine service safety procedures should be exercised at all times.

● Untrained personnel should not attempt service without a thorough review of the test procedures

and safety information contained in this manual.

— 1 —

FOREWORD

Read this Manual carefully. Failure to adhere to or observe the information in this Manual may result in exposing yourself to the Microwave Energy normally contained within the oven cavity.

MECHANICAL SERVICE INFORMATION

TABLE OF CONTENTS

ADJUSTMENT PROCEDURES ................................................................................................................................... 3

PRECAUTIONS ON INSTALLATION ........................................................................................................................... 5

GENERAL PRECAUTIONS IN USE ............................................................................................................................ 5

TRIAL OPERATION ..................................................................................................................................................... 5

FEATURES AND SPECIFICATIONS ........................................................................................................................ 5-6

OVERALL CIRCUIT DIAGRAM ................................................................................................................................ 7-8

OPERATING PROCEDURES ................................................................................................................................. 9-10

PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE .............................................................. 11-12

DISASSEMBLY INSTRUCTIONS ......................................................................................................................... 13-20

PRECAUTIONS AND REPAIR SERVICE TIPS ......................................................................................................... 21

TEST AND CHECKOUT PROCEDURES, AND TROUBLESHOOTING

A. TEST PROCEDURES ................................................................................................................................ 22-28

B. CHECKOUT PROCEDURES ..................................................................................................................... 28-30

C. TROUBLESHOOTING ............................................................................................................................... 31-36

EXPLODED VIEW.................................................................................................................................................. 37-45

REPLACEMENT PARTS LIST......................................................................................................................... 46-54

SCHEMATIC DIAGRAM OF PCB......................................................................................................................... 55

PRINTED CIRCUIT BOARD ................................................................................................................................. 56

PCB PARTS LIST ............................................................................................................................................ 57-59

— 2 —

1. ADJUSTMENT PROCEDURES

ADJUST THE LATCH AND SWITCH CLOSING

To avoid possible exposure to microwave energy leakage, adjust the door latches and interlock switches, using the following procedure.

ONLY AUTHORIZED SERVICE PERSONNEL SHOULD MAKE THIS ADJUSTMENT.

The Interlock Monitor and Secondary Interlock Switch act as the final safety switch protecting the user from microwave energy. The terminals between "COM" and "NC" of the Interlock Monitor switch must close when the door is opened. After adjusting the Interlock Monitor Switch make sure that it is correctly connected. See Figures 1-a and 1-b throughout this procedure.

CHECK THE DOOR LATCH AND SWITCH CLOSINGS.

NOTE: The outer cover of the microwave oven is

removed.

(1) Set the microwave oven on its side so that you can

see the latch board and the switches, as shown in Figure 1-a.

(2) Close the door tightly and check gaps A and B to be

sure they are no more than 1/64" (5 mm). See Figure 1-b for close-up view of gaps A and B (door latches).

If all gaps are less than 1/64" (5 mm), adjustment of the latch board may not be necessary. Go to Steps 5 and 6 to check the sequence of the switches.

NOTE: To correct sequence of the Primary Interlock Switch, Secondary Interlock Switch and the Interlock Monitor Switch is very important.

If any gap is larger than 1/64" (5 mm), you will need to adjust the latch board-U, L. Go to step 3 and follow all steps in order.

(3) Loosen the two screws holding the plastic latch

board as shown.

(4) With the oven door closed tightly, move the latch

board upward toward the top of the oven and/or away from the door latch until the gaps are less than 1/64" (5 mm). Hold the latch board tigtly in this position until you check the sequence of the switches in steps 5 and 6.

TEST THE LATCH AND SWITCH SEQUENCE

(5) Open the oven door slowly. Watch the door latch, the

Secondary Switch. Release Rod and Lever on the switches to make sure they are zero to the body of the switches in the following sequence:

— Primary Interlock Switch — Secondary Interlock Switch — Interlock Monitor Switch

Adjust the latch board until the switches operate in this sequence. See Steps 3 and 4.

(6) Close the oven door slowly and be sure it is tightly

closed. Watch the three switches to make sure they are zero to the body of the switches in the following sequence:

— Interlock Monitor Switch — Primary Interlock Switch — Secondary Interlock Switch

NOTE: The Interlock Monitor Switch is an added safety check on the Primary and Secondary Interlock Switches. If the Primary and Secondary Interlock Switches allow the oven to operate with the door open, the Monitor Switch will blow the fuse.

(7) When you achieve the proper sequence of swithces

in Steps 5 and 6, tighten the latch board screws at that point.

TEST THE MICROWAVE ENERGY LEAKAGE

(8) Using a survey meter, make sure the microwave

energy is below 4 mW/cm2.

— 3 —

Latch Board

Secondary Interlock Switch

Oven Lamp Switch

Interlock Monitor Switch

Primary Interlock Switch

Figure 1-a

Latch

0.1/64"

— 4 —

2. PRECAUTIONS ON INSTALLATION (Figure 2)

A. Plug the power supply cord into a 120V AC, 60Hz,

single-phase power source with a capacity of at least 15 amperes.

B. Avoid placing the unit in a location where there is

direct heat or splashing water. C. Install the unit on the mounting plate firmly. D. Place the unit as far away as possible from TV, radio,

etc. to prevent interference.

CAUTION

This unit is equipped with a 3-prong plug for your safety. If the wall outlet is a grounded 3-hole type, the unit will be grounded automatically

Plug with Ground Prong

Properly Polarized and Grounded Outlet

A. Put a container filled with water (about 1 liter) into the

oven, and close the door tightly. B. Touch the STOP/CLEAR and the TIME keys. C. Set cooking time for 10 minutes by touching "1" and

then "0" three times. "1, 0, 0, 0" appears in the

display window. D. Touch the START key.

Make sure the cavity light comes on. The unit will

begin cooking and the display window will show the

time counting down by seconds. E. After about 5 minutes, make sure the primary

interlock switch, the secondary interlock switch and

the interlock monitor and oven lamp switch operate

properly by opening and closing the door several

times.

Touch the START key each time the door is closed. F. Continue operating the unit. Two short and a long

beep sound signal is heard when the time is up.

The unit will shut off automatically. G. Confirm the water is hot. H. Finally, measure the output power according to

"POWER OUTPUT MEASUREMENT" on page 12.

5. FEATURES AND SPECIFICATIONS

Figure 2

3. GENERAL PRECAUTIONS IN USE

A. Never operate the unit when it is empty. Operating

the oven with no load may shorten the life of the magnetron. Whenever cooking dry foods (dried fish, bread, etc.) or a small amount of food, be sure to put a glass of water into the cooking compartment. The ceramic plate may become hot after operating, be careful when touching it.

B. Aluminum foil should be avoided because it will

disrupt cooking and may cause arcing. However, small pieces may be used to cover some part of food to slow the cooking. Any aluminum foil used should never be closer than 2.5cm to any side wall of the oven.

C. Be sure to insert the temperature probe into the food

and the other end into the socket in the cooking cavity for the temperature controlled cooking.

4. TRIAL OPERATION

After installation, the following sequences and results should be checked carefully.

FEATURES

A. The safety systems incorporated in this model are:

(1) Primary interlock switch

(2) Secondary interlock switch

(3) Interlock monitor switch

(4) Choke system

(5) Magnetron thermostat

(6) Oven cavity thermostat

(Note: This thermostat located on the oven cavity will open and stop the unit from operation only if a high temperature is reached, such as, a fire created by overcooking food.)

B. Any one of 10 power output levels ranging 85W to

850W can be selected by the touch control and

electronic computer system. C. The temperature probe enables accurate control of

cooking temperature and results. D. Cooking time, power output level and operating

temperature can be displayed on the digital readout. E. Three different cooking stages can be set. The oven

remembers three cooking stages and changes from

one cooking stage to another. This is made possible

with the memory function of the microprocessor. This

cooking process can be set after Auto Defrost is set.

— 5 —

SPECIFICATIONS

Rated Power Consumption ................................. 1300W maximum (Microwave oven only)

1500W maximum (Microwave oven+Cook top lamps+Ventilation fan) 1500W (Convection)

Microwave Output ............................................... 850W (IEC 705 TEST PROCEDURE)

Adjustable 85W through 850W, 10 steps

1350W (Convection)

Frequency ........................................................... 2,450 MHz±50 MHz

Power supply ....................................................... 120V ±12V AC, 60Hz

Rated Current ...................................................... 12 Amp. (Microwave oven only)

13 Amp. (Microwave oven+Cook top lamps+Ventilation fan)

Magnetron Cooling .............................................. Forced Air Cooling

Microwave Stirring ............................................... Stirrer Fan Disk

Rectification ......................................................... Rectification Voltage Doubler Half-Wave

Door Sealing ....................................................... Choke System

Safety Devices .................................................... Magnetron Thermostat:

Open at 150°C±6°C Close at 60°C±15°C

Oven Thermostat:

Open at 150°C±6°C

Close at below 0°C Fuse(15A) Primary Interlock Switch Secondary Interlock Switch Interlock Monitor

Magnetron ........................................................... 2M214-19F

High Voltage Capacitor ....................................... Capacitor: 0.91μFd, 2.1KV Ac

High Voltage Diode ............................................. Diode; 350mA, 9.0KV

Cook top Lamp .................................................... 125V, 30W

Cavity Lamp ........................................................ 125V, 30W

Timer ................................................................... Digital, up to 99 min. 99 sec. (in each cooking stage)

Tray ..................................................................... Ceramic Plate

Overall Dimensions ............................................. 29

Oven Cavity Size ................................................. 18

Effective Capacity of Oven Cavity ....................... 1.1 Cu.ft.

Accessories ......................................................... Use and Care Manual, Installation Manual,

/8"(W)x14"(D)x163/16"(H)

/16"(W)x125/8"(D)x85/32"(H)

Metal Rack, Exhaust Adapter, Exhaust Damper, Mounting Kit and Two filters.

SWITCH CHART

PRIMARY SECONDARY INTERLOCK

SWITCH MODE INTERLOCK INTERLOCK MONITOR

SWITCH SWITCH SWITCH

CONDITIONS

DOOR OPEN DOOR CLOSED

NOTE: Use the above switch chart with circuit diagram on page 7.

COM COM COM

NO NO NC

··

— 6 —

6. OVERALL CIRCUIT DIAGRAM

A. SCHEMATIC DIAGRAM

— 7 —

B. MATRIX CIRCUIT FOR TOUCH KEY BOARD

N.C

HOLD

WARM

LIGHT

OFF

AUTO

COMBI.

CONV.

BAKE

CONV.

BROIL

COMBI.

BAKE

COMBI.

ROAST

FAN

HIGH

FAN

LOW

FAN OFF

LIGHT

HIGH

LIGHT

NIGHT

ROOM

TEMP

FROZEN

TEMP

POULTRY

CUSTOM

COOK

SENSOR

COOK

SENSOR

POPCORN

STOP

/CLEAR

N.CN.C

N.C

CLOCK

POWER

START

TIME

FISH

MEAT

N.C

Figure 3

— 8 —

B. MATRIX CIRCUIT FOR TOUCH KEY BOARD

N.C

HOLD

WARM

LIGHT

OFF

AUTO

COMBI.

CONV.

BAKE

CONV.

BROIL

COMBI.

BAKE

COMBI.

ROAST

FAN

HIGH

FAN

LOW

FAN OFF

LIGHT

HIGH

LIGHT

NIGHT

ROOM

TEMP

FROZEN

TEMP

POULTRY

CUSTOM

COOK

SENSOR

COOK

SENSOR

POPCORN

STOP

/CLEAR

N.CN.C

N.C

CLOCK

POWER

START

TIME

FISH

MEAT

N.C

Figure 3

— 8 —

7. OPERATING PROCEDURES

Figure 4

Display -

Used to show time of day, cooking time, cooking power level, and miscellaneous indicators during cooking functions.

Popcorn -

Used to pop popcorn.

Cook -

Used to sensor cooking.

Room Temp -

Used to reheat foods at room temperature.

Frozen Temp -

Used to reheat frozen foods.

Convection -

Used in setting convection cooking or preheat.

Combination -

Used in setting combination cooking or preheat.

Auto Combination -

Used in setting weight combination cooking.

Time -

Used in setting cooking time.

Power -

Used to select cooking power.

Clock -

Used in setting time of day.

Custom Cook -

Used for memory entry and memory recall of a cooking program.

Numbers -

Used to enter the:

• Time of day

• Cooking Time

• Cooking Powers

• Quantities or weights

Hold Warm -

Used to keep hot, cooked foods safely warm in your microwave oven up to 60 minutes.

Auto Defrost -

Used to defrost frozen meat, poultry, and fish.

Fan Control Pad -

Used to turn on the fan at high speed or low speed and turn off the fan.

Light Pad -

Used to turn the work light on/off in either the high or night modes.

Stop/Clear -

Used to stop the oven or clear all entries except time of day.

Start -

Used to start the oven.

HOLD

WARM

CLOCK

CUSTOM

COOK

TIME POWER

123 456 7

POPCORN COOK

ROOM

TEMP

FROZEN

TEMP

SENSOR

CONVECTION

COMBINATION

BAKE BROIL

BAKE

AUTO COMBI

ROAST

STOP

CLEAR

START

MEAT

POULTRY

FISH

HIGH LOW OFF

HIGH NIGHT OFF

AUTO DEFROST

FAN

LIGHT

A. OVEN CONTROL PANEL

— 9 —

B. PANEL INSTRUCTIONS (Figure 4)

The entire operation is done by simple touch control pads.

(1) Display Window

Numbers and letters explained in Figure 4 are shown in the display window (Vacuum Fluorescent Tube).

The Time of Day in five-digits (12-hour indication):

(a) (b) Cooking Time in five digits. (c) Power Control Level in two digits. (d) Food Temperature (Doneness Temperature) in

five digits.

(e) Each Indicator Light shows which function is set

and involved in the course of cooking by turning itself on. Indicator Lights automatically go out upon completion of cooking.

(6) START Key

Touch the START key after setting the desired cooking time etc. Also touch the START key to resume cooking after the cooking is temporarily stopped by opening the door. The key will not function unless the door is closed.

(7) SENSOR Key

Used to sensor cooking.

(8) CONVECTION Key

Used in setting convection cooking or preheat.

(2) TIME Key

The TIME key is used to set the microwave cooking time. Touch the TIME key and then number keys that correspond to the desired cooking time. The remaining time is continuously displayed during cooking.

(3) POWER Key

Used to select cooking power level.

(4) CLOCK Key

Used in setting Time of Day.

(5) STOP/CLEAR Key

Used to stop the oven or clear all entries except Time of Day.

(9) COMBINATION Key

Used in setting combination cooking or preheat.

(10) AUTO COMBINATION Key

Used in setting weight combination cooking.

(11) AUTO DEFROST Key

Used to defrost for frozen foods by weight.

— 10 —

8. PROCEDURE FOR MEASURING

Move probe along shaded area.

Probe scanning speed less than 2.5cm/sec.

MICROWAVE ENERGY LEAKAGE

A. CAUTIONS

(1) Be sure to check a microwave emission prior to

servicing the oven if the oven is operative prior to servicing.

(2) The service personnel should inform the

manufacturer, importer or assembler of any certified oven unit found to have a microwave emission level in excess of 4 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.

(3) If the oven operates with the door open, the service

personnel should;

— Tell the user not to operate the oven. — Contact the manufacturer and CDRH (Center for

Devices and Radiological Health) immediately. NOTE: Address on CDRH Office of Compliance (HFZ-312) Center for Devices and Radiological Health 1390 Piccard Drive Rockville, Marryland 20850

(4) The service personnel should check all surface and

vent openings for microwave emission testing.

(5) Check for microwave energy leakage after every

servicing. The power density of the microwave radiation leakage emitted by the microwave oven should not exceed 4 mW/cm2. And always start measuring of an unknown field to assure safety for operating personnel from radiation leakage. NOTE: The standard is 5 mW/cm2. while in the customer's home. 4 mW/cm2. stated here is manufactruer's own voluntary standard for units in customer's home.

EQUIPMENT

●

Electromagnetic energy leakage monitor (NARDA 8100B, HOLADAY HI-1501).

●

600cc glass beaker.

●

Glass thermometer 100°C.

B. MEASURING MICROWAVE ENERGY LEAKAGE

(1) Pour 275±15cc of 20±5°C water in a beaker which

is graduated to 600cc, and place the beaker in the center of the oven.

(2) Set the energy leakage monitor to 2,450MHz and

use it following the manufacturer's recommended test procedure to assure correct result.

(3) When measuring the leakage, always use the 2 inch

(5cm) spacer supplied with the probe. (4) Operate the oven at its maximum output. (5) Measure the microwave radiation using and

electromagnetic radiation monitor by holding the

probe perpendicular to the surface being measured.

Figure 6

C. MEASUREMENT WITH THE OUTER CASE

REMOVED

(1) 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.

— Around the magnetron — The waveguide

WARNING: AVOID CONTACTING ANY HIGH

VOLTAGE PARTS.

Figure 5

— 11 —

D. MEASUREMENT WITH A FULLY

Water Load

Ceramic Plate

Figure 7

ASSEMBLED OVEN

(1) After all components, including the outer panels, are

fully assembled, measure for microwave energy leakage around the door viewing window, the exhaust opening and air inlet openings.

(2) Microwave energy leakage must not exceed the

values prescribed below.

NOTES:

Leakage with the outer panels removed-less than 5mW/cm2. Leakage for a fully assembled oven ("Before the latch switch (primary) is interrupted") with the door in a slightly opened position-less than 2mW/cm2.

E. NOTE WHEN MEASURING

(1) Do not exceed meter full scale deflection. (2) 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.

(3) 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.

(4) 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 possibly cause probe damage.

G. POWER OUTPUT MEASUREMENT

(1) 1. Fill two test bowls with each 59°F (15°C)-

75°F(24°C) 1 liter water respectively.

2. Use accurate thermometer (°F or °C) and measure each water temperature repsectively.

(2) Place the two bowls on ceramic plate. (3) 1. Set cooking time to 2 minutes. ("2 00" appears in

display)

2. Touch START key and operate oven for exactly 2 minutes.

(4) 1. Take out the two bowls at once.

2. Stir both water with thermometer and measure the water temperature rise respectively.

(5) 1. Get temperature rise by calculating the difference

(water temperature after cooking minus initial temperature) in each test bowls.

2. Then calculate average value of both temperature rises in degrees Fahrenheit (°F) or Centigrade (°C).

(6) Power output shall be indicated by the following

ranges of water temperature rise as shown in the chart below.

(7) Power Output will be influenced by line voltage of

power supply. Consequently, correct power output must be measured within 120V AC ±1 volt while unit is operating.

Average

Temp. Rise

108V (Low Voltage)

Temp. Rise

F. RECORD KEEPING AND NOTIFICATION AFTER

MEASUREMENT

(1) 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.

(2) Should the microwave energy leakage not be more

than 2 mW/cm2after determining that all parts are in good condition, functioning properly and genuine replacement parts which are listed in this manual have been used.

(3) At least once a year, have the electromagnetic

energy leakage monitor checked for calibration by its manufacturer.

Min. Max. Min.

16.2°F 22.1°F 16.2°F

(9.0°C) (12.3°C) (9.0°C)

— 12 —

9. DISASSEMBLY INSTRUCTIONS

Circuit Board

Screw

Figure 8

Figure 9

FPC Connector ( S1)

Circuit Board

Control Base

Figure 7

Control Panel

Power Trans

Connector

Relay 2 Relay 9

Screw

(CN 4)

(CN 2)

(CN 1)

IMPORTANT NOTES:

UNIT MUST BE DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPAIRS, REPLACEMENTS, ADJUSTMENTS AND CONTINUITY CHECKS. WAIT AT LEAST ONE MINUTE, UNTIL THE HIGH VOLTAGE CAPACITOR IN THE HIGH VOLTAGE POWER SUPPLY HAS FULLY DISCHARGED. THE CAPACITOR SHOULD BE DISCHARGED BY USING INSULATED WIRE-I.E. TEST PROBE CONNECTED TO 10K-OHM RESISTOR IN SERIES TO GROUND. WHEN RECONNECTING THE WIRE LEADS TO ANY PART, MAKE SURE THE WIRING CONNECTIONS AND LEAD COLORS ARE CORRECTLY MATCHED ACCORDING TO THE OVERALL CIRCUIT DIAGRAM. (ESPECIALLY SWITCHES AND HIGH VOLTAGE CIRCUIT.)

A. REMOVING POWER AND CONTROL CIRCUIT

BOARD (Figure 7, 8 and 9)

(1) Remove 1 screw securing the control panel

assembly to the oven cavity. (Figure 7) (2) Remove the control panel with pushing it upward. (3) Remove the three connectors (CN1, CN2, CN4) and

wire leads (Relay) from the circuit board. (4) Remove 5 screws securing the circuit board.

(Figure 8) (5) Remove the FPC connector from the terminal socket

following "HOW TO REMOVE THE FPC

CONNECTOR" on the next page. (6) Remove the circuit board from the control bracket

carefully.

— 13 —

HOW TO REMOVE THE F.P.C. CONNECTOR

Plastic

fastener

F.P.C.

Connector

Terminal

socket

Plastic

fastener

F.P.C.

Connector

Terminal

socket

Hooks

Holes

F.P.C.

Connector

Terminal

socket

Lever and of

plastic fastener

F.P.C.

Connector

Terminal

socket

Hooks

Holes

HOW TO INSERT THE F.P.C. CONNECTOR

Follow the steps below as illustrated Figures 10 and 11 to remove the F.P.C. connector.

(1) Hold the edges of the plastic fastener with thumb and

forefinger. (Figure 10) (2) Lift up the lever and of the plastic fastener from the

terminal socket by lightly pressing the lever end with

thumb and forefinger. (Figure 11) (3) Remove the F.P.C. connector from the terminal

socket.

Follow the steps below as illustrated in Figures 12 and 13 to insert the F.P.C. connector.

(1) Insert the F.P.C. connector into the terminal socket

securely with the fingers.

(2) Hold the plastic fastener with thumb and forefinger of

the other hand, and push it slowly into the terminal socket. (Figure 12)

NOTE: When reconnecting the F.P.C. connector, make

sure that the holes on the F.P.C. connector are properly engaged with the hooks on the plastic fastener.

(3) Lock the level end of the plastic fastener into the

hook of the terminal socket securely by releasing the fingers. (Figure 13)

Figure 10

Figure 12

Figure 11

— 14 —

Figure 13

B. REMOVING THE OUT CASE

Power Cord

Power Cord Cover

Out Case

Controller

Door

Vent Grille

Mounting Plate

(1) Remove the vent grille by removing two screws

securing it to the outcase. (2) Remove two screws securing it to the front bracket. (3) Remove the mounting plate by turning the three

screws securing it to the outcase. (4) Remove the base plate by removing six screws

securing it to the out case. Remove two screws securing it to the ventilation motor Asm.

(5) Remove the power cord cover from outcase by

removing a screw.

(6) Push the power cord to the inner of the outcase and

remove the outcase.

Figure 14

— 15 —

C. REMOVING THE PRIMARY INTERLOCK SWITCH,

Latch Board

Secondary Interlock Switch

Primary Interlock Switch

Interlock Monitor Switch

Oven Lamp Switch

Figure 16

Latch Board

RED (From Monitor Switch) WHITE (From Power Cord)

Oven Lamp Switch

RED (From Secondary Switch) WHITE (From Fan Motor) PINK (From PCB)

RED (From Magenetron Thermostat) RED (From PCB) WHITE (From H.V. Trans) Interlock Monitor Switch

PINK (From PCB) BLUE (From PCB) BLUE (From PCB)

Primary Interlock Switch

BLUE (From Tower Motor)

Secondary Interlock Switch

WHITE (From H.V Trans)

BLACK (From Oven Lamp)

BLUE (From Oven Lamp)

Figure 15

INTERLOCK MONITOR SWITCH AND SECONDARY INTERLOCK SWITCH

(Figures 15, 16)

(1) Disconnect the wire leads from the primary interlock

switches. (2) Remove two screws securing the Latch Board. (3) Make necessary replacement and check microwave

energy leakage according to "1. ADJUSTMENT

PROCEDURE" on page 3.

— 16 —

D. REMOVING MAGNETRON (Figures 17 through 21)

(1) Remove the vent grille by removing two screws. (2) Remove the controller by removing a screw and

disconnect all wire leads. (3) Remove the base plate by removing six screws

securing it to the oven front plate and outcase. (4) Remove the wire cover by removing a screw

securing it to the oven lower plate. Disconnect the

cook top leads connector from the bottom plate-R.

(Figure 17) (5) Remove the outcase by removing eleven screws

securing it to the front bracket, power cord cover,

ventilation asm and outcase. (6) Remove the ventilation asm by disconnect the wire

leads. (7) Remove the air duct by removing five screws

securing it to the oven front plate, cover glasswool-R,

and guide air. (Figure 18) (8) Remove the C-motor bracket assy by removing four

screws securing it to the cover glasswool-R and

guide air. (Figure 19) (9) Remove the guide air by removing three screws

securing it to the bottom plate-R and guide air.

(Figure 19)

(10) Remove the guide suction by removing three

screws securing it to the bottom plat-R, oven front plate and magnetron. (Figure 20)

(11) Remove four tap tite screws securing the

magnetron to the wave guide. (Figure 21)

(12) Remove the magnetron VERY CAREFULLY.

NOTES

Remove the leads from the magnetron thermostat very carefully. Use long nose pliers.

NOTES

●

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

●

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.

●

After replacing the magnetron, check for microwave energy leakage with a survey meter. Check microwave energy leakage must be below the limit of 4 mW/Cm2. (All service adjustments should be made minimum microwave energy leakage readings).

— 17 —

E. REMOVING STIRRER FAN DISK

(Figures 22, 23)

(1) Remove ceramic plate. (2) Remove the stirrer fan disk.

Figure 22

NOTES

●

After replacing the door, be sure to check that the primary interlock switch the secondary interlock switch and the interlock monitor and the lamp switch operate normally.

●

After replacing the door, check for microwave energy leakage with a survey meter. Microwave energy leakage must be below the limit of 5 mW/cm2. (All service adjustments should be made for minimum microwave energy leakages.)

Figure 23

F. REMOVING DOOR (Figure 24)

(1) Remove 6 tap tite screws securing the upper and

lower hinge. (2) To remove the door, tilt the top of the door toward

you and lift the door up:

Figure 24

G. DISASSEMBLING DOOR (Figure 25)

(1) Remove the dielectric choke by using knife blade or

small screw driver, etc.

(2) Remove two screws securing it to the door handle.

— 18 —

Figure 25

H. REMOVING THE VENTILATION FAN ASM

(1) Remove the mounting plate by removing three

screws securing it to the back plate. (See Figure 26) (2) Remove the two screws securing the ventilation fan

asm. (See Figure 27) (3) Carefully pull the ventilation motor asm out of the

microwave oven. (See figure 28) (4) Disconnect the wire leads.

Figure 27

Figure 26

Figure 28

— 19 —

I. REMOVING CONVECTION HEATER AND

THERMISTOR (Figure 29)

(1) Remove the out case. (2) Remove the air duct by removing five screws

securing it to the oven front plate, guide air and

glasswool-R cover. (3) Disconnect the wire leads of heater element terminal

and the C-motor assy wire asm. (4) Remove the silicone belt. (5) Remove the C-motor assy by removing four screws

securing it to the guide air and glasswool-R cover.

(6) Remove the thermistor by removing one screw

securing the chamber-out plater.

(7) Remove the five screws securing the glasswool-L

cover, chamber assy and glasswool-R cover. (8) Lift the chamber assy from the oven cavity. (9) Remove four screws securing the heater fo the

chamber assy. (10) Lift the convection heater from the chamber assy.

Figure 29

— 20 —

10. PRECAUTIONS AND REPAIR SERVICE TIPS

PRELIMINARY

A. SINCE NEARLY 2,100 VOLTS EXISTS IN SOME

CIRCUITS OF THIS UNIT, REPAIRS SHOULD BE CARRIED OUT WITH GREAT CARE.

The filament leads of magnetron carry High Voltage with respect to ground. Extreme caution must be exercised. Never plug the unit into a power source to determine which component is defective in high voltage section.

B. TO AVOID POSSIBLE EXPOSURE TO

MICROWAVE ENERGY LEAKAGE, THE FOLLOWING PRECAUTIONS MUST BE TAKEN BEFORE SERVICING.

(1) Before the power is applied.

a. Make sure the primary interlock switch, the

secondary interlock switch and the interlock monitor switch operate properly by opening and closing the door several times. (See page 24)

b. Make sure the perforated screen and the dielectric

choke of the door are correctly and firmly mounted.

(2) After power is applied:

a. Make sure the interlock switch mechanism is

operating properly by opening and closing the door.

b. Check microwave energy leakage must be below

the limit of 4 mW/cm2. (All service adjustment should be made for

minimum microwave energy leakage readings).

(3) Do not operate the unit until it is completely repaired,

if any of the following conditions exist. The unit must not be operated. a. The door does not close firmly. b. The hinge is broken. c. The dielectric choke of the door seal is damaged. d. The door is bent or warped, or there is any other

visible damage on the unit that may cause

microwave energy leakage. NOTE: Always keep the seal clean. e. Make sure that there are no defective parts in the

interlock mechanism. f. Make sure that there are no defective parts in the

microwave generating and transmission assembly

(especially waveguide).

(4) The following items should be checked after the unit

is repaired: a. The interlock monitor switch is connected correctly

and firmly. b. The magnetron gasket is properly positioned and

mounted. c. The waveguide and the oven cavity are intact.

(no microwave energy leakage). d. The door can be properly closed and the safety

switches work properly. e. The unit must stop when the door is opened or the

time is up.

The unit must not be operated with any of the

above components removed or by-passed.

— 21 —

11. TEST AND CHECKOUT PROCEDURES,

Secondary Winding

Primary Winding

Filament Winding

AND TROUBLESHOOTING

CAUTIONS

DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVING THE CABINET FROM THE UNIT. PROCEED WITH THE TESTS ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. (SEE FIGURE 30)

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

A. TEST PROCEDURES

Figure 30

COMPONENTS TEST PROCEDURE RESULTS

MAGNETRON (Wire leads are removed)

HIGH VOLTAGE TRANSFORMER (Wire leads are removed)

1) Measure the resistance: Across the filament terminals of the magnetron with an ohm-meter on Rx1 scale.

2) Measure the resistance: Between each filament terminal of the magnetron and the chassis ground with an ohm-meter on highest scale.

1) Measure the resistance: With an ohm-meter on Rx1 scale. a. Primary winding; b. Filament winding; c. Secondary winding;

2) Measure the resistance; With an ohm-meter on highest scale. a. Primary winding to ground; b. Filament winding to ground;

Normal reading:

Less than 1 ohm

Normal reading:

Infinite ohms

NOTE

●

Replace the magnetron, if the magnetron checks and all of the high voltage component tests are good, but the unit still does not heat a load.

Normal readings:

Approx. 0.44 ohms Less than 0.1 ohm Approx 105± 5 ohms

Normal readings:

Infinite ohms Infinite ohms

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

SERVICED FOR ANY REASON.

— 22 —

COMPONENTS TEST PROCEDURE RESULTS

Ohm- meter

HIGH-VOLTAGE CAPACITOR

Measure the resistance:

1) Terminal to terminal.

1) Terminal to case.

Normal reading:

Momentarily indicates several ohms, and then gradually returns to infinite ohms.

Abnormal reading:

Indicates continuity or infinite ohm from the beginning.

Figure 31-a

Normal reading:

Infinite.

Abnormal reading:

Indicates continuity.

HIGH-VOLTAGE DIODE

Measure the continuity

1) Forward (Ohm-meter on Rx10000 scale.)

2) Reverse

Figure 31-b

Normal reading:

Continuity

Abnormal reading:

Infinite.

Figure 32-a

Normal reading:

Infinite.

Abnormal reading:

continuity.

Figure 32-b

— 23 —

COMPONENTS TEST PROCEDURE RESULTS

SWITHCHES (Wire leads are removed)

Check for the continuity of the switch with an ohm-meter

Secondary Interlock

Primary Interlock

DOOR OPEN

Terminals "COM" and "NO" of switch

DOOR CLOSED

Terminals "COM" and

Lamp Switch

"NO" of switch Terminals "COM" and

"NC" of switch

Interlock Monitor

●

The sevice personnel should replace all of the monitored safety interlock

Terminals "COM" and "NC" of switch

switches and monitor switch if the oven has been rendered inoperative due to the failure of the monitored safety interlock(s).

●

Be sure to connect the monitor switch after replacement and to check interlock monitor continuity.

NOTE:

After checking for the continuity of switches, make sure that they are correctly connectly connected.

CIRCUIT BOARD See page 30 for "CHECKOUT PROCEDURES FOR CIRCUIT BOARD".

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

SERVICED FOR ANY REASON.

— 24 —

COMPONENTS TEST PROCEDURE RESULTS

6 5 4 3 2 1

FAN MOTOR TOWER MOTOR CIRCULATIONS MOTOR (Wire leads are removed)

THERMISTOR (Disconnect the 6 pin conncetor CN2 from PCB)

Measure the resistance with an ohmmeter on Rx1 scale.

Figure 34

Measure the resistance across pins 5 & 6 with an ohm-meter on Rx1 scale.

Figure 35

Normal reading:

Fan Tower Cir.

30-45 60-75 25-40

ohms.

Normal reading: Approx. 250~350 K ohms at 20°C.

HEATER ELEMENT (Wire leads are

Measure the resistance with an ohmmeter on Rx1 scale.

Normal reading: Approx. 9~12 ohms at 20°C

removed)

SENSOR (Disconnect the 3 pin

Measure the resistance across pins 1 & 2 an ohm-meter on Rx1 scale.

Figure 36

Normal reading:

connector CN4 from PCB)

1 & 2 2 & 3

20 ∞

Figure 37

ohms at 20°C.

NOTE:●A MICROWAVE ENERGY 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.

— 25 —

COMPONENTS TEST PROCEDURE RESULTS

SYNCHRONOUS MOTOR (Wire leads are removed)

RELAY 1 of P. C. B <Disconnect the 10 pin connector (CN 1) from P.C.B>

Measure the resistance with an ohmmeter on Rx10000 scale.

Figure 38

Normal reading: Approx. 3~4 Kohms.

Cooking Start OFF

Figure 39

Convection OFF Cooking Start

RELAY 7 of P.C.B <Disconnect the 10 pin connector (CN 1) from P.C.B>

Figure 40

NOTE:●A MICROWAVE ENERGY 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.

— 26—

COMPONENTS TEST PROCEDURE RESULTS

RELAY 2

RELAY 9

RELAY 2

RELAY 9

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

Figure. 41

Check for continuity of relay 9 with an ohm-meter. (Remove wire leads from relay 9 and operate the unit on convection cooking mode.)

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

STAND-BY

CONDITION

STAND

CONDITION

Figure 42

NOTE:●A MICROWAVE ENERGY 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.

— 27 —

COMPONENTS TEST PROCEDURE RESULTS

N.C

HOLD

WARM

LIGHT

OFF

N.C

AUTO

COMBI.

CONV. BAKE

CONV. BROIL

COMBI.

BAKE

COMBI. ROAST

FAN

HIGH

FAN LOW

FAN OFF

LIGHT

HIGH

LIGHT NIGHT

ROOM TEMP

FROZEN

TEMP

POULTRY

CUSION

COOK

SENSOR

COOK

SENSOR

POPCORN

STOP

/CLEAR

N.C

CLOCK

POWER

START

TIME

FISH

MEAT

N.C

1 2 3 4 5 6 7 8

9 10 11 12 13

FPC CONNECTOR

Top

TOUCH KEY BOARD Measure the resistance between

terminal pins of connector KEY CON.

NOTE

●

When reconnecting the F.P.C connector, make sure that the holes on the F.P.C. connector are properly engaged with the hooks on the plastic fastener.

MATRIX CIRCUIT FOR

TOUCH KEY BOARD

CONNECTOR (KEY CON)

Resistance

value

When When not touched touched

Less than More than 400 ohms 1 Mohm

B. CHECKOUT PROCEDURES

(1) CHECKOUT PROCEDURES FOR FUSE BLOWING. CAUTION: REPLACE BLOWN FUSE WITH 15 AMPERE FUSE.

Fuse blows immediately after the door is closed.

Fuse blows immediately after the door is opened.

Fuse blows when the door is closed and START key is touched.

NOTES:

●

If the fuse is blown by an improper switch operation, replace all switches in the interlock circuit and the fuse. After replacing the switches with new ones, make sure that they are correctly connected.

●

Check for microwave engergy leakage according to "ADJUSTMENT PROCEDURES" on page 3, when the primary interlock, secondary interlock switches and/or the interlock monitor switches are adjusted or replaced.

Figure 43

PROBLEMS CAUSES

Improper operation of the primary inerlock, secondary inerlock switches and/or the interlock monitor switch.

Malfunction of the high voltage transformer, the high voltage capacitor including the diode, the magnetron, the blower motor,or the circuit board.

— 28 —

Figure 44

(2) CHECKOUT PROCEDURES FOR RELAY

PROBLEM (A)

FAN motor and oven lamp turn on without touching START key when the door is closed.

YESNO

Good

Remove the mate connector of I/O CON from the circuit board. Does the unit still operate?

Defective RELAY 1

PROBLEM (B)

NOYES

YESNO

Good

Replace the circuit board

Defective RELAY or poor connection of RELAY.

Replace RELAY or correct the connection.

FAN motor and oven lamp turn on when the door is closed and START key is touched.

Measure the voltage at pin NO. 38 of U01 or 12 U03. Voltage reading : 0 Vdc.

Replace RELAY 1

Replace the circuit board

— 29—

(3) CHECKOUT PROCEDURES FOR CIRCUIT

BOARD.

The following symptoms indicate a defective circuit board.

1) The start function fails to operate but the high voltage systems, the interlock switches, the door sensing and the relay check good.

2) The unit with a normal relay continuously operates.

3) Proper temperature measurement is not obtained.

4) The buzzer does not sound or continues to sound.

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

SERVICED ANY REASON.

5) Some segments of one or more digits do not light up, or they continue to light up, or segments when they should not.

6) Wrong figures appear.

7) The figures of all digits flicker.

8) Some of the indicators do not light up.

9) The clock does not keep time properly.

— 30 —

CHECK : 1. POWER SUPPLY

2. FUSE (See "CHECKOUT PROCEDURE FOR FUSE BLOWING" on page 25.)

3. OVEN CAVITY THERMOSTAT

PROBLEM A : "0" does not appear in display window when power

supply cord is plugged into wall outlet.

120V

120

Voltage

incorrect.

Contact

Normal

circuit board

Normal

resistance

SEQUENCE

Runs

C. TROUBLESHOOTING

Before following this troubleshooting read "TRIAL OPERATION" on page 5.

• "DISPLAY" Problems, "A" thru "C"

• "HEAT UP" Problems, "D" thru "E"

• "TEMPERATURE CONTROLLED COOKING" Problems, "F"

RESULT

Replace

circuit board

Runs

PROBLEM B : Display does not show correct numbers and/or

correct indications when programmed.

Measure resistance

of touch key borad

after removing

connector S1.

(See page 14 and 28)

Normal

resistance

Resistance

incorrect

Check contact

of connentor

Poor

contact

Replace

circuit board

Correct

seating

Normal

contact

Runs

Replace touch

key board.

Normal touch

key board

Correct

connections

Normal

circuit board

• "BUZZER" Problems "G"

Measure voltage

between pin 1 and

pin 4 of connector CN1.

— 31 —

CHECK : 1. TOUCH KEY BOARD (START KEY FUNCTION)

PROBLEM C :Display does not start countdown when START key is touched.

Continuity

Normal

circuit board

Normal

contact

SEQUENCE

Runs

RESULT

Replace

circuit board

PROBLEM D : Unit operation seems to be normal

but little or no heating is produced in oven load.

Check operation

of fan motor

when START

key is touched.

Normal

operation

Measure resistance

of H.V. capacitor

(See page 23)

Normal

resistance

Replace

magnetron

Runs

Check contact of

connector S1.

No continuity

Normal primary

switch

Runs

Contact

Poor contact

Correct

seating

Adjust or replace door sensing

sensing switch (See page 3)

CHECK: 1. AIR VENTS

Resistance

incorrect

THERMOSTAT

Jumper across

terminals of

THERMOSTAT by

using jumper lead.

Replace

fan motor

Replace

circuit board

Normal

circuit board

Runs

Resistance

incorrect

Replace H.V.

capacitor

Normal H.V.

capacitor

Normal

magnetron

Normal

fan motor

Normal

resistance

Runs

Check continuity of connector

CN2 between pin 1(PK)

and pin 3(BL) when the

door is closed.

Replace

thermostat

Runs

Normal

thermostat

Normal

operation

Measure resistance

of fan motor

38 8 ohms.

— 32 —

PROBLEM E : Unit does not heat up even if display counts down when START

key is touched for "NIGH POWER" cooking.

SEQUENCE RESULT

Resistance

incorrect

Resistance incorrect

Replace H.V. capacitor

Runs

Normal

resistance

CHECK: 1. PRIMARY AND

SECONDARY

INTERLOCK

SWITCHES

2. THERMOSTAT

Check the contact

of Relay 2.

(See page 27)

continuity

Replace

circuit board

Correct seating

Replace circuit board

Normal

circuit board

Runs

Contact

Poor contact

Runs

Normal

circuit board

Normal H.V.

capacitor

Contact

Check contact of

connector S1.

Normal

resistance

Check the continuity

of H.V. capacitor

(See page 23)

Abnormal Replace H.V.

diode

Runs

Normal

Replace

magnetron

Measure resistance

of H.V.transformer

(See page 22)

Check the

continuity

of H.V. diode

(See page 23)

Normal H.V.

diode

Normal

magnetron

Normal H.V.

transformer

Replace H.V.

transformer

Normal contact

— 33 —

PROBLEM F: Unit does not heat up at all even if display counts down

when START key is touched for convection cooking.

SEQUENCE

RESULT

PROBLEM G : Oven temperature is very low even if display counts down when START

key is touched for convection cooking.

Check the contact of

Relay 7. (See page 26)

continuity

Resistance

incorrect

Replace

circuit board

Replace

circulation motor

Normal

circuit board

Runs

Normal

resistance

CHECK: 1. PRIMARY

INTERLOCK

SWITCH

Check the contact of

Relay 9

(See page 27)

continuity

Replace

circuit board

Replace

heater

Normal

circuit board

Runs

Normal

resistance

Replace

thermistor

Normal

thermistor

Normal

heater

Resistance

incorrect

Runs

CHECK: 1. PRIMARY INTERLOCK SWITCH

2. THERMISTOR

Replace heater

chamber

Normal heater

chamber

Normal

circulation motor

Contact

Measure resistance of

heater. (See page 25)

Contact

Measure resistance of

circulation motor.

(See page 25)

— 34 —

PROBLEM H : When START key is touched for convection cooking, oven temperature

is very high and then unit stops operating.

SEQUENCE RESULT

CHECK: 1. POWER SUPPLY

2. FUSE

Poor

contact

Replace

thermistor

Normal

contact

Runs

Normal

thermistor

Contact

Runs

Please cool unit

sufficiently

Correct

seating

Check contact of

6 pin thermistor

connector

PROBLEM I : No buzzing when touching the key,

PROBLEM J : between stages or at end of cooking.

Runs

Check normal

operation circuit board

Replace

circuit board

Normai circuit

board

— 35 —

PROBLEM J : Ventilation fan does not operate

PROBLEM K :

when "FAN HIGH/LOW" key is touched.

SEQUENCE

RESULT

CHECK: 1. POWER SUPPLY

2. FUSE

Check the contact of

Magnetron thermostat.

contact

Replace

magnetron thermostat

Correct

seating

Replace

circuit board

Normal

contacting

Normal

circuit board

Runs

Poor

Contacting

Contact

Runs

Contact

Check contact

of connector S1.

(See page 13)

runs

Replace

ventilation motor

asm

Normal

ventilation motor

asm

— 36 —

DOOR PARTS

— 37 —

EXPLODED VIEW

13581A

13552A

13720D

14026A

14970A

34774U

13650A

34774U

13213A

14760A

14890A

WSZ153

WTT024

14760A

#EV#

MODEL: MV-1155W

CONTROLLER PARTS

— 38 —

WTT028

WTT021

268711

24810P

26638A

*07

23572A

24781M

WTT021

#EV#

OVEN CAVITY PARTS

— 39 —

Manual, operation

548112

33112U

WTT029

WTT021

33550P

WTT021

56411A

WTT021

56804A

368771

35230A

948505

WTT022

34890C

34810T

35026G

WTT022

53550A

348101

33530A

Installation Instruction

WTT022

WTT021

34810Q

WTT022

63302A

36912B

#EV#

LATCH BOARD PARTS

— 40 —

WSZ085

43500A

466001

466004

466002

43510A

466003

43501A

#EV#

INTERIOR PARTS( I )

— 41 —

55893A

568771

53300C

WSZ002

56851D

WTP013

WTT021

WSZ002

56324A

WSZ137

53300B

WTT021

56170D

56930M

54810A

WTP004

54810C

56851H

50CZZH

WSZ002

WTT021

#EV#

INTERIOR PARTS( II )

— 42 —

WTP004

56930V

549741

549742

549743

55231C

WTT021

36549V

WNZ017

568771

545601

36549C

WTT021

WTP004

56930C

WTT021

56820A

WTP019

55900A

WNZ017

56549F

568772

WTT022

WSZ153

56804A

WNZ017

549751

53550L

56912B

55262A

WTT029

WTT021

546801

WSZ002

WTT021

53550A

WTT037

54974S

#EV#

INTERIOR PARTS( III )

— 43 —

WTT021

53551S

53551L

WSZ002

53551R

568772

WTT021

#EV#

INSTALLATION PARTS

— 44 —

WSZ136

WSZ098

WBZZ02

638581

63300M

WBZZ01

65862D

65862B

WTP013

64360A

WSZ136

63861A

638582

WTT021

#EV#

PLATE CHAMBER ASSY PARTS

— 45 —

WNH003

WWS011

545602

WWP008

WTT010

WTT011

35300S

34990A

WTT011

WMT002

533001

55892A

WWP008

WWS011

WNH003

54930A

54281A

533002

54400A

WTT021

54810A

55263A

56501A

WTT021

948503

Goldstar MV-1155W Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

#EV#

#EV#

#EV#

#EV#

#EV#

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