Daewoo KOC-1B4K5S, KOC-1B4K Service Manual

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Service Manual

Microwave Oven

Model: KOC-1B4K0S

S/M NO. : C1B4K0S001

DAEWOO ELECTRONICS CO., LTD.

http://svc.dwe.co.kr Apr. 2001

✔

Caution

: In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr).

PRECA UTIONS T O BE OBSERVED BEFORE AND DURING SER VICING T O AVOID POSSIBLE EXPOSURE T O EXCESSIVE MICROW AVE 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 if 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 power to the microwave oven 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.

A microwave leakage check to verify compliance with the Federal performance standard should be performed on each oven prior to release to the owner.

TABLE OF CONTENTS

1. SAFETY AND PRECAUTIONS....................................................................................................................................2

2. SPECIFICATIONS ........................................................................................................................................................3

3. EXTERNAL VIEW.........................................................................................................................................................3

3-1. OUTER DIMENSION..........................................................................................................................................3

3-2. FEATURE DIAGRAM .........................................................................................................................................4

4. INSTALLATION............................................................................................................................................................5

5. CONTROL PANEL .......................................................................................................................................................6

6. DISASSEMBLY AND ASSEMBLY..............................................................................................................................7

7. INTERLOCK MECHANISM AND ADJUSTMENT.....................................................................................................17

8. TROUBLE SHOOTING GUIDE..................................................................................................................................18

9. MESUREMENT AND TEST .......................................................................................................................................24

9-1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT........................................................................24

9-2. MICROWAVE RADIATION TEST....................................................................................................................25

9-3. COMPONENT TEST PROCEDURE................................................................................................................26

9-4. COMPONENT ACTION....................................................................................................................................27

10. WIRING DIAGRAM...................................................................................................................................................28

11. EXPLODED VIEW AND PARTS LIST ..................................................................................................................29

11-1. DOOR ASSEMBLY.........................................................................................................................................29

12-2. CONTROL PANEL ASSEMBLY.....................................................................................................................29

13-3. TOTAL ASSEMBLY........................................................................................................................................29

12. PRINTED CIRCUIT BOARD ....................................................................................................................................33

13. P.C.B CIRCUIT DIAGRAM.......................................................................................................................................37

1. SAFETY AND PRECA UTIONS

1. FOR SAFE OPERATION

Damage that allows the microwave energy (that cooks or heats the food) to escape will result in poor cooking and may cause serious bodily injury to the operator. IF ANY OF THE FOLLOWING CONDITIONS EXIST, OPERATOR MUST NOT USE THE APPLIANCE. (Only a trained service personnel should make repairs.)

(1) A broken door hinge. (2) A broken door viewing screen. (3) A broken front panel, oven cavity. (4) A loosened door lock.

(5) A broken door lock. The door gasket plate and oven cavity surface should be kept clean. No grease, soil or spatter should be allowed to build up on these surfaces or inside the oven. DO NOT ATTEMPT TO OPERATE THIS APPLIANCE WITH THE DOOR OPEN. The microwave oven has concealed switches to make sure the power is turned off when the door is opened. Do not attempt to defeat them. DO NOT ATTEMPT TO SERVICE THIS APPLIANCE UNTIL YOU HAVE READ THIS SERVICE MANUAL.

2. FOR SAFE SERVICE PROCEDURES.

1. If the oven is operative prior to servicing, a microwave emission check should be performed prior to servicing the

oven.

2. If any certified oven unit is found to servicing, a microwave emission check should be performed prior to servicing the

oven.

(1) inform the manufacturer, importer or assembler,

(2) repair the unit at no cost to the owner,

(3) attempt to ascertain the cause of the excessive leakage,

(4) tell the owner of the unit not to use the unit until the oven has been brought into compliance.

3. If the oven operates with the door open, the service person should tell the user not to operate the oven and contact

the manufacturer immediately.

IMPORTANT

The wire in this mains lead coloured in accordance with the following code.

Green-and-yellow : Earth Blue : Neutral

Brown : Live As the colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured green-and-yellow must be connected to the terminal in the plug which is marked with the letter ‘E’, earth symbol or coloured green-and-yellow. The wire which is coloured blue must be connected to the terminal which is marked with the letter ‘N’ or coloured black. The wire which is coloured brown must be connected to the terminal which is marked with the letter ‘L’ or coloured red.

NOTE : This oven is designed for counter-top use only.

3. EXTERNAL VIEW

2. SPECIFICATIONS

MODEL KOC-1B4K POWER SUPPLY 230V~50HZ, SINGLE PHASE WITH EARTHING

MICROWAVE 1500W POWER GRILL 1600W CONSUMPTION COMBECTION 2300W

COMBINATION 3100W MICROWAVE ENERGY OUTPUT 1000W(IEC705) MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 560X344X543mm (22.0X13.5X21.3 in.) CAVITY DIMENSIONS (W X H X D) 368.5X246X376.5mm (14.5X9.7X14.8 in.) NET WEIGHT APPROX. 21.5kg (47.6 lbs.) TIMER 60 minutes FUNCTION SELECTIONS MICROWAVE/ GRILL/ CONVECTION/ COMBINATION POWER SELECTIONS 10 LEVELS CAVITY VOLUME 1.2 Cu. Ft

* Specifications are subject to change without notice.

1. OUTER DIMENSION

11.DOOR HOOK

When the door is closed, it will automatically lock shut. If door is opened while oven is operating, the magnetron will immediately stop operating.

12.DOOR VIEWING SCREEN

Allows viewing of food. The screen is designed so that light can pass through, but not the microwave.

13.METAL RACK

14.TOP HEATER

Turns on when convection, grill and combi cooking is selected.

15.OVEN LAMP

Automatically turns on during oven operating.

16.SAFETY INTERLOCK SYSTEM

17.CONTROL PANEL

18.TURNTABLE TRAY

Rotates during cooking and ensure even distribution of Microwaves. It can also be used as a cooking utensil.

19.ROLLER GUIDE

This must always be used for cooking together with the turntable tray.

10. COUPLER

This fits over the shaft in the center of the ovens cavity floor. This is to remain in the oven for all cooking.

11. CONVECTION OUTLET & FAN

12. UNDER HEATER

13. OVEN FRONT PLATE

14.DOOR SEAL

Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage.

2. FEATURE DIAGRAM

1. Steady, flat location

This microwave oven should be set on a steady, flat surface. This microwave oven is designed for counter top use only.

2. Leave space behind and side

All air vents should be kept a clearance. If all vents are covered during operation, the oven may overheat and, eventually, cause failure.

3. Away from Radio and TV sets

Poor television reception and radio interference may result if the oven is located close to a TV, Radio, antenna or feeder and so on.

Position the oven as far from them as possible.

4. Away from heating appliances and water taps

Keep the oven away from hot air, steam or splash when choosing a place to position it, or the insulation might be adversely affected and breakdowns occur.

5. Power supply

• Check your local power source. This microwave oven requires a current of approximately 12 amperes, 230V, 50Hz.

• Power supply cord is about 1.2 meters long.

• The voltage used must be the same as specified on this oven. Using a higher voltage may result in a fire or other accident causing oven damage. Using low voltage will cause slow cooking. We are not responsible for damage resulting from use of this oven with a voltage of ampere fuse other than those specified.

• This appliance is supplied with cable of special type, which, if damaged, must be repaired with cable of same type.

• Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person.

6. Examine the oven after unpacking for any damage such as:

A misaligned door, broken door or a dent in cavity. If any of the above are visible, DO NOT INSTALL, and notify dealer immediately.

7. Do not operate the oven if it is colder than room temperature.

(This may occur during delivery in cold weather.) Allow the oven to become room temperature before operating.

This appliance must be earthed. In the event of an electrical short circuit, earthing reduces the risk of the electric shock by providing an escape wire for the electric current. This appliance is equipped with a cord having a earthing wire with a earthing plug. The plug must be plugged into an outlet that is properly installed and earthed.

4. INSTALLATION

EARTHING INSTR UCTIONS

WARNING

Improper use of the earthing plug can result in a risk of electric shock. Consult a qualified electrician of serviceman if the earthing instructions are not completely understood, or if doubt exists as to whether the appliance is properly earthed, and either: If it is necessary to use an extension cord, use only a 3-wire extension cord that has a 3-blade earthing plug, and a 3-slot receptacle that will accept the plug on the appliance. The marked rating of the extension cord should be equal to or greater than the electrical rating of the appliance, or Do not use an extension cord.

5. CONTROL PANEL

DISPLAY WINDOW

1. MICROWAVE - indicator, showing microwaving in

progress.

2. DEFROST- indicator, showing defrosting in progress.

3. GRILL(upper grill heater) - indicator, showing griling in progress.

4. GRILL(lower grill heater) - indicator, showing griling in progress.

5. CONVECTION - indicator, showing convectioning in progress.

6. CHILD LOCK - indicator.

7. % - percentage microwave power level indicator.

BUTTONS

8. language - Press to select the language.

9. clock - Use to set clock.

10. less - Use to remove time from cooking.

11. more - Use to add time to cooking.

12. m/w - Press to select microwave power level.

13. combi - Press to select combi cooking mode.

14. auto defrost - Press to select defrost menu.

15. convection -

Press to select convection temperature.

16. grill - Press to select grill.

17. cake - Press to select cake menu.

18. crusty - Press to select crusty menu.

19. auto cook - Press to select auto cook menu.

20. memory - Use to set favorite cooking mode.

21. start/speedy cook - Press to start a programme,

also for speedy start (each press adds 30 secondsmicrowave cooking time).

22. stop/clear - Press once to stop a programme, and twice to cancel a programme.

23. dial knob - Use to set time, weight and quantity.

6. DISASSEMBLY AND ASSEMBLY

- Cautions to be observed when trouble shooting.

Unlike many other appliances, the microwave oven is high-voltage, high-current equipment. It is completely safe during normal operation. However, carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit. You are asked to observe the following precautions carefully.

1. Always remove the power plug from the outlet before servicing.

2. Use an insulated screwdriver and wear rubber gloves when servicing the high voltage side.

3. Discharge the high voltage capacitor before touching any oven components or wiring. (1) Check the grounding.

Do not operate on a two-wire extension cord. The microwave oven is designed to be used while grounded. It is imperative, therefore, to make sure it is grounded properly before beginning repair work.

(2) Warning about the electric charge in the high voltage capacitor.

For about 30 seconds after the operation has stopped, electric charge remains in the high voltage capacitor. When replacing or checking parts, short between oven chassis and the negative high terminal of the high voltage capacitor by using a properly insulated screwdriver to discharge.

4. When the 15A fuse is blown out due to the operation of the monitor

switch; replace primary interlock switch, secondary interlock switch and interlock monitor switch.

5. After repair or replacement of parts, make sure that the screws are

properly tightened, and all electrical connections are tightened.

6. Do not operate without cabinet.

CAUTION : Service personnel should remove their watches whenever working close to or replacing the magnetron.

WARNING : When servicing the appliance, take care when touching or replacing high potential parts because of

electrical shock or exposing microwave. These parts are as follows - HV Transformer, Magnetron, HV Capacitor, HV Diode.

NOTE: After replacting the door assembly, perform a

check of correct alignment with the hinge and cavity front plate.

1. T o remo ve cabinet

1) Remove four screws on cabinet back.

2) Push the cabinet backward.

2. T o remo ve guide wind assembl y

1) Remove two screws which secure the stopper hinge top.

2) Remove the door assembly from top plate of cavity.

3) Reverse the above for assemby.

3. T o remo ve door parts.

REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK

A01 3512603520 HANDLE DOOR ALUMINUM 1 A02 3515307400 SUPPORTER HANDLE KOC-1B4K0S 2 A03 3511605500 DECORATOR DOOR *U STS304 T0.5 1 A04 3511605400 DECORATOR DOOR *T STS304 T0.5 1 A05 3511605700 DECORATOR DOOR *L STS304 T0.5 1 A06 3511605600 DECORATOR DOOR *R STS304 T0.5 1 A07 3512204740 FRAME DOOR PC 1 A08 7001503511 SCREW MACHINE PAN 5X35 MFZN 2 A09 3517004090 BARRIER-SCREEN *O TEMP GLASS T3.2 1 A10 3515204900 STOPPER HINGE *T AS KOC-1B4K0S 1 A11 3516602100 DOOR-PLATE SBHG-1A T0.7 1 A12 3513101200 HOOK POM 1 A13 3515101800 SPRING HOOK PW1 1 A14 3512302300 GASKET DOOR PRT 1

✔ Caution:

In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr)

(1) Remove the gasket door(A14) from door plate. (2) Remove two screws(A08) from door plate. (3) Remove the door handle (A01) and handle supporter (A02) from door plate. (4) Remove the four door decorators (A03~A06) from door frame. (5) Remove the door frame (A07) from door plate. (6) Remove the stopper hinge top(A10) from door plate. (7) Remove the spring(A13) and the hook(A12). (8) Remove the barrier screen outer(A09) from door frame. (9) Reverse the above steps for reassembly.

4. Method to reduce the gap between the door seal and the

oven front surface.

(1) To reduce gap located on part ‘A’.

• Loosen two screws on stopper hinge top, and then push the door to contact the door seal to oven front surface.

• Tighten two screws.

(2) To reduce gap located on part ‘B’.

• Loosen two screws on stopper hinge under, and then push the door to contact the door seal to oven front surface.

• Tighten two screws.

NOTE : A small gap may be acceptable if the microwave leakage does not exceed 4mW/cm2.

5. To remove control panel parts.

REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK

B01 3515501720 WINDOW DISPLAY SAN 1 B02 3511605020 DECORATOR C/PANEL STS 304 T0.5 HL 1 B03 3516724140 C-PANEL ABS XR-401 H-2938 1 B04 3516908440 BUTTON FUNCTION-B ABS SG-175 SG-0760D 1 B05 3516908340 BUTTON FUNCTION-A ABS XR-401 H-2938 1 B06 3513406040 KNOB VOLUME ABS SG-175 SG-0760D 1 B07 3511605120 DECORATOR RING ABS 4 B08 3516908540 BUTTON FUNCTION-C ABS SG-175 SG-0760D 4 B09 3514323130 SUB PCB ASS’Y KOC-1B4K 1 B10 7121301011 SCREW TAPPING T2S PAN 3X10 MFZN 7 B11 3514323060 MAIN PCB ASS’Y KOC-1B4K 1 B12 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 4

(1) Remove four screws(B12) which secure the control panel. (2) Pull out the Main PCB assembly(B11). (3) Remove seven screws(B10) which secure the control panel. (4) Pull out the Sub PCB assembly(B09). (5) Pull out the Knob volume(B06) from the Sub PCB assembly. (6) Pull out six buttons from the control panel. (7) Pull out Decorator ring(B07) and Window display (B01) from the control panel. (8) Pull out the Decorator c-panel (B02) from the control panel. (9) Reverse the above steps for reassembly.

✔ Caution:

CAUTION : Never install the magnetron without the metallic gasket plate which is packed with each magnetron to

prevent microwave leakage. Whenever repair work is carried out on magnetron, check the microwave leakage. It shall not exceed 4mW/cm

for a fully assembled oven with door normally closed.

6. T o remo ve high v oltage capacitor.

1) Remove a screw which secure the grounding ring terminal of the H.V. diode and the capacitor holder.

2) Remove the H.V. diode from the capacitor holder.

3) Reverse the above steps for reassembly.

◆ High voltage circuit wiring

7. T o remo ve magnetr on.

1) Remove a screw which secure the magnetron.

2) Remove the magnetron.

3) Reverse the above steps for reassembly.

Metallic gasket

Magnetron antenna

plate

Cooling fin

Filament terminal

8. To remove wind guide assembly.

1) Remove a screw for earthing.

2) Remove the noise filter from the wind guide.

3) Remove a screw which secure the wind guide assembly.

4) Draw forward the wind guide assembly.

5) Pull the fan from the motor shaft.

6) Remove two screws which secure the motor shaded pole.

7) Remove the motor shaded pole.

8) Reverse the above steps for reasembly.

9. To remove H.V.transformer.

1) Remove four screws holding the H.V.transformer.

2) Remove the H.V.transformer.

3) Reverse the above steps for reassembly.

10. To remove Lamp assembly parts.

1) Remove a screw 1and pull out Guide air outlet 2.

2) Remove two screws

and pull out insulator heater *t3.

3) Pull out the Lamp assembly.

4) Remove two screws

pull out the Lamp assembly.

5) Pull out the Holder lamp assembly

from the Cover lamp5.

6) Pull out the Lamp

from the Holder lamp assembly7.

7) Reverse the above steps for reassembly.

1 2

3 4

REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK

1 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 2 3512520500 GUIDE AIR OUTLET SA1D T0.5 1 3 3513303000 INSULATOR HEATER*T SECC T0.5 1 4 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2 5 3511407800 COVER LAMP STS430 T0.5 1 6 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2 7 3513003900 HOLDER LAMP AS KOC-1B0K0S 1 8 3513602600 LAMP HALOGEN 2 9 3511407810 COVER LAMP GLASS T2.0 1

✔ Caution:

11. To remove Top heater assembly parts.

1) Remove a screw 1and pull out Guide air outlet 2.

2) Remove two screws

and pull out insulator heater *t3.

3) Pull out the Top heater assembly.

4) Pull out the Harness heater

5) Pull out the Braket heater*t

from the Cover heater*t8.

6) Pull out the Heater miraclon

from the Cover heater*t8.

7) Reverse the above steps for reassembly.

1 2 3 4

6 7

REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK

1 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 2 3512520500 GUIDE AIR OUTLET SA1D T0.5 1 3 3513303000 INSULATOR HEATER*T SECC T0.5 1 4 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2 5 3512767000 HARNESS HEATER KOC-1B0K0S 1 6 3510607700 BRACKET HEATER *T SA1D T0.5 1 7 3512803800 HEATER MIRACLON 115V 550W 270MM 2 8 3511407600 COVER HEATER *T STS430 T0.5 1

✔ Caution:

12. To remove Rear heater assembly parts.

1) Remove a screw 1and pull out Cover motor *B2.

2) Remove a screw

and pull out Cover *B4.

3) Pull out the Harness convection-B

4) Remove four screws

and then pull out the Rear heater assembly.

5) Remove a Nut

and the pull out the Fan convection0and Washer plain9.

6) Remove three screws

and then separate the Cover heater *B7and the lnsulator heater *Br.

7) Pull out two Heaters

from the Cover Heater *B7.

8) Remo two screw

and then separate the lnsulator heater *Brand Motor shaded poley.

9) Remove the C-Ring

and then pull out the Fanufrom Motor shaft.

10)Reverse the above steps for reassebly.

11 10

8 7 6

REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK

1 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 2 3511407300 COVER MOTOR*B SA1D-80 T0.5 1 3 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2 4 3511407400 COVER*B SA1D-80 T0.5 1 5 3512766900

HARNESS CONVECTION-B

KOC-1B0K0S 1 6 3512803800 HEATER MIRACLON 115V 550W 270MM 2 7 3511407700 COVER HEATER*B SA1D-80 T0.5 1 8 7113400814 SCREW TAPPING T1 BIN 4X8 MFNI 3 9 7400504011 WASHER PLAIN PW5-5 BRASS 1

10 3511800700 FAN CONVECTION SA1D-80 T0.5 1 11 7S627W50X1 NUT HEX 6N-1-4 BSNI 1 12 3512766800

HARNESS CONVECTION-A

KOC-1B0K0S 1

13 7051400811 SCREW MACHINE PAN 4X8 SW MFZN 2 14 3513302900 INSULATOR HEATER*B SBHG-1 T0.5 1 15 7113400814 SCREW TAPPING T1 BIN 4X8 MFNI 4 16 3963514300 MOTOR SHADED POLE 230V 50HZ MW10CA-TO 1 17 3511800800 FAN PP GF20 1 18 7402704600 RING-C CR-5 SK5 1

✔ Caution:

13. To remove Motor synchro. And Under heater assembly parts.

1) Cut the Motor syncro. cover parts from the base plate.

2) Remove a screw and then pull out Motor syncro.

3) Remove a screw

and then pull out the Under heater *U. assembly.

4) Remove a screw

5) Pull out the Heater *U

from the Cover heater *U2.

6) Reverse the above steps for reassembly.

CUTTING (6EA)

REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK

1 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 2 3511407500 COVER HEATER *U STS430 T0.5 1 3 3515304000 SUPPORTER HEATER *U STS430 T0.5 1 4 3512802000 HEATER *U 230V 400W R18374001 1 5 7113400814 SCREW TAPPING T1 BIN 4X8 MFZN 1

✔ Caution:

7. INTERLOCK MECHANISM AND ADJUSTMENT

The door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation when the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave.

(1) Primary interlock switch

When the door is closed, the hook locks the oven door. If the door is not closed properly, the oven will not operate. When the door is closed, the hook pushes the button of the microswitch. Then the button of the primary interlock switch bring it under ON condition.

(2) Secondary interlock switch and interlock monitor switch

When the door is closed, the hook pushes the lock lever downward. The lock lever presses the button of the interlock monitor switch to bring it under OFF condition and presses the button of the secondary interlock switch to bring it under ON condition.

(3) Adjustment steps

a) Loosen the one mounting screw. b) Adjust interlock switch assembly position. c) Make sure that lock lever moves smoothly after adjustment is completed. d) Tighten completely two mounting screws.

ADJUSTMENT :

Interlock monitor switch When the door is closed, the interlock monitor switch should be opened before other switches are closed.

When the door is opened, the interlock monitor switch should be closed after other switches are opened.

NOTE :

Microwave emission test should be performed after adjusting interlock mechanism. If the microwave emission exceed 4mW/cm

, readjust interlock mechanism.

8. TROUBLE SHOO TING GUIDE

Following the procedure below to check if the oven is defective or not.

1) Check grounding before trouble checking.

2) Be careful of the high voltage circuit.

3) Discharge the high voltage capacitor.

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

(TROUBLE 1) Oven does not operate at all : any inputs can not be accepted.

NOTE :

When electric parts are checked, be sure the power cord is not inserted the wall outlet.

Check wire harness, wiring and connection of the terminals and power cord before check the parts listed below.

CONDITION CHECK

Check continuity of interlock monitor switch with door closed ( COM↔NC )

Check continuity of both primary and secondary interlock switch with door closed

Malfunction of Interlock monitor switch

Malfunction of interlock switch

RESULT

Continuity

No continuity

CAUSE REMEDY

Replace

(COM↔NC)

Fuse blows.

Replace

Shorted contacts of primary interlock Switch

Continuity

Replace

Check continuity of primary interlock switch contact with door partially open until interlock monitor switch contact close ( COM↔NC close )

Defective low voltage transformer

Defective high voltage transformer

0 Ω or infinite Replace

Replace

Check continuity of primary winding of low voltage transformer

Disconnect high voltage fuse and operate the unit

Continuity

Approx.

530Ω

( normal )

Fuse again

blows

CONDITION CHECK

Check continuity of

magnetron

Defective

magnetron.

RESULT

continuity

CAUSE REMEDY

Replace

Outlet has

proper

voltage

fuse does not

blow?

Check continuity of noise filter

board

Defective line

filter board

continuity

Replace

Check continuity of

power supply cord

Defective touch

control circuit

Replace

Open power

supply cord

continuity

Replace

NOTE : All these switches must be replaced at the same time, please refer to (7.Interlock mechanism and

adjust) for adjustment instructions

(TROUBLE 2)

Display shows all figures selected, but oven does not start cooking, even though desired program and time are set and start button is tapped.

CONDITION CHECK

Check continuity of

primary interlock switch

Malfunction of

primary interlock

switch

RESULT

continuity

CAUSE REMEDY

Adjust or

replace

Turn table motor and

oven lamp

not turn on

Check D.C voltage

being supplied to RELAY(RY4) coil

Fault contacts

of RELAY

(RY4) or open

relay coil.

Replace

Check continuity of

secondary interlock

and D.O.M switch

Malfunction of

secondary

Interlock and

D.O.M switch

continuity

Adjust or

replace

Defective touch

control Circuit

Approx.

24V DC

Replace

TROUBLE 3) No microwave oscillation even though fan motor rotates.

CONDITION CHECK RESULT

Check continuity of

high voltage capacitor terminals

with wires removed

Continuity

CAUSE

Defective

high voltage

transformer

Defective

high voltage

fuse

REMEDY

Replace

microwave

oscillation

Check continuity of

high voltage rectifier in forward

and backward

direction with DC megger

Continuity in backward

direction

Defective high

voltage rectifier

Replace

Connect megger leads to

magnetron terminal and

magnetron body

Continuity

Defective

magnetron

1 Check resistance of primary

and secondary coil of high voltage transformer

0 Ω or ∞

Defective

high voltage

transformer

Replace

Check continuity of

high voltage fuse

No microwave oscillation

continuity

2 Check continuity of

magnetron heater with wires removed

No continuity

Defective

magnetron

Replace

1 Check continuity of filament

terminal of high voltage transformer

No continuity

Defective high

voltage

transformer

Replace

Check D.C voltage

being supplied to

RELAY (RY1) coil

0 V

Defective

touch control

circuit

Replace

Approx. 24V DC

Faulty contacts of

RELAY

(RY1) or open

relay coil

Replace

(TROUBLE 4) Grill heater (upper heater) is not heated; food will not become hot.

CONDITION CHECK

Check continuity of

primary interlock switch

Malfunction of

primary Interlock

switch

RESULT

continuity

CAUSE

REMEDY

CAUSE

REMEDY

Adjust or

replace

Grill heater is

not heated.

Check D.C voltage

being supplied to

RELAY (RY2) coil

Faulty contacts of

RELAY

(RY2) or open

relay coil

Replace

Check continuity of

secondary interlock switch

Malfunction of

secondary

interlock switch

continuity

Adjust or

replace

Defective touch

control circuit

Approx.

24V DC

Replace

Check continuity of

heater

Defective heater

continuity

Replace

(TROUBLE 5)

1) Convection heater is not heated; food will not become hot.

2) Convection fan motor does no rotate.

CONDITION CHECK

Check continuity of

primary interlock switch

Malfunction of

primary Interlock

switch

RESULT

continuity

Adjust or

replace

1)Convection heater is not

heated.

2)Convection

fan does

not rotate.

Check D.C voltage

being supplied to

RELAY (RY3, RY6) coil

Faulty contacts of

RELAY

(RY3,RY6) or

open relay coil

Replace

Check continuity of

secondary interlock

switch

Malfunction of

secondary

interlock switch

continuity

Adjust or

replace

Defective touch

control circuit

Approx. 24V DC

Replace

Check continuity of

(heater or fan)

Defective heater

or fan

continuity

Replace

(TROUBLE 6) Lower heater is not heated; food will not become hot.

CONDITION CHECK

Check continuity of

Primary interlock switch

Malfunction of

primary Interlock

switch

RESULT

continuity

CAUSE

REMEDY

Adjust or

Replace

Lower heater Is not heated

Check D.C voltage

Being supplied to

RELAY (RY7) coil

Faulty contacts of

RELAY

(RY7) or open

relay coil

Replace

Check continuity of

secondary interlock

switch

Malfunction of

secondary

interlock switch

continuity

Adjust or

replace

Defective

Touch control

circuit

Approx. 24V DC

Replace

Check continuity of

heater

Defective heater

continuity

Replace

CONDITION CHECK

Check each button for

continuity of the button

Malfunction of sub

pcb assembly

RESULT

Normal

CAUSE REMEDY

Replace sub

pcb assembly

Display does

not show

programming

at all, even if

keyboard is

touched.

(TROUBLE 7) The following visual conditions indicate a probable defective touch control Circuit or button P.C.B. assembly

1. Incomplete segments.

1) segment missing

2) partial segments missing

3) digit flickering other than normal fluorescent slight flickering

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

3. One or more digits in the display are not on when they should be.

4. Display does not count down or up with time cooking or clock operation.

5. Oven is programmable and cooks normally but no display shows.

6. Display obviously jumps in time while counting down.

7. Display counts down noticeably too fast while cooking.

8. Display does not show the time of day when clear button is touched.

CAUSE

REMEDY

(TROUBLE 8) When “ERROR 2 ERROR 3” come on display.

CONDITION CHECK

Check continuity of thermistor

(resistance of thermistor)

Defective

thermistor

RESULT

0Ω or infinite

Replace

“ERROR 2 &

ERROR 3”

come on

display

Check continuity of heater (convection, upper, lower)

Defective touch

control circuit

Replace

Approx

200k~300kΩ

(room

temperature)

Defective

heater

continuty

continuity

Replace

9. MEASUREMENT AND TEST

1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT

Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed to the microwave as directed below.

PROCEDURE

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

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

3. The oven and the empty vessel are at ambient temperature prior to the start of the test. The initial temperature of the water is 10 ± 2°C (50 ± 3.6°F). If 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 shelf, which is in the lowest normal position.

4. Microwave power is switched on.

5. Heating time should be exactly A seconds. (Refer to table as following) Heating time is measured while the microwave generator is operating at full power. The filament heatup time for magnetron is not included.

6. The initial and final temperature of water is selected so that the maximum difference between the ambient and final water temperature is 5K.

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

• ∆ T is difference between initial and ending temperature.

• t is the heating time.

The power measured be B (Refer to SPECIFICATIONS) W ± 10.0 %.

✻ Heating time for power output:

CAUTION

1. Water load should be measured exactly to 1 liter.

2. Input power voltage should be exactly specified voltage (Refer to SPECIFICATIONS).

3. Ambient temperature should be 20 ± 2°C (68 ± 3.6°F)

P = 4187 X ∆ T/t

600

650

700

750

800

850

900

950421000401050381100

A (second)

B (W)

2. MICROWAVE RADIA TION TEST

PROCEDURE

1. Prepare Microwave Energy Survey Meter, 600cc glass beaker, and glass thermometer 100°C (212°F).

2. Pour 275cc ± 15cc of tap water initially at 20 ± 5°C (68 ± 9°F) in the 600 cc glass beaker with an inside diameter of approx. 95 mm(3.5 in.).

3. Place it at the center of the tray and set it in a cavity.

4. Close the door and operate the oven.

5. Measure the leakage by using Microwave Energy Survey Meter with dual ranges, set to 2450MHz.

1) Measured radiation leakage must not exceed the value

prescribed below. Leakage for a fully assembled oven with door normally closed must be less than 4mW/Cm

2) When measuring the leakage, always use the 5 cm (2 in.)

space cone with probe. Hold the probe perpendicular to the cabinet and door. Place the space cone of the probe on the door, cabinet, door seem, door viewing screen, the exhaust air vents and the suction air vents.

3) Measuring should be in a counter-clockwise direction at a rate of 1 in./sec. If the leakage of the cabinet door

seem is unknown, move the probe more slowly.

4) When measuring near a corner of the door, keep the probe perpendicular to the areas making sure the probe

end at the base of the cone does not get closer than 2 in. from any metal. If it does not, erroneous reading may result.

WARNING

1. Make sure to check the microwave leakage before and after repair of adjustment.

2. Always start measuring of an unknown field to assure safety for operating personnel from microwave energy.

3. Do not place your hands into any suspected microwave radiation field unless the safe density level is known.

4. Care should be taken not to place the eyes in direct line with the source of microwave energy.

5. Slowly approach the unit under test until the radiometer reads an appreciable microwave leakage from the

unit under the test.

3. COMPONENT TEST PROCEDURE

• High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle.

• It is neither necessary nor advisable to attempt measurement of the high voltage.

• Before touching any oven components or wiring, always unplug the oven from its power source and discharge the

capacitor.

1. High voltage transformer

1) Remove connections from the transformer terminals and check continuity.

2) Normal readings should be as follows : Secondary winding ... Approx. 100 Ω±10% Filament winding ... Approx. 0 Ω Primary winding ... Approx. 1.2 Ω

2. High voltage capacitor

1) Check continuity of capacitor with meter on the highest OHM scale.

2) A normal capacitor will show continuity for a short time, and then indicate 10MΩ once the capacitor charged.

3) A shorted capacitor will show continuous continuity.

4) An open capacitor will show constant 10MΩ.

5) Resistance between each terminal and chassis should be infinite.

3. High voltage diode

1) Isolate the diode from the circuit by disconnecting the leads.

2) With the ohmmeter set on the highest resistance scale measure the resistance across the diode terminals. Reverse the meter leads and again observe the resistance reading. Meter with 6V, 9V or higher voltage batteries should be used to check the front-back resistance of the diode, otherwise an infinite resistance may be read in both directions. A normal diode's resistance will be infinite in one direction and several hundred k Ω in the other direction.

4. Magnetron

For complete magnetron diagnosis, refer to "Measurement of the Microwave Power Output." Continuity checks can only indicate and open filament or a shorted magnetron. To diagnose for an open filament or a shorted magnetron,

1) Isolate magnetron from the circuit by disconnecting the leads.

2) A continuity check across magnetron filament terminals should indicate 0.1 Ω or less.

3) A continuity check between each filament terminal and magnetron case should read open.

5. Fuse

If the fuse in the primary and monitor switch circuit is blown when the door is opened, check the primary and monitor switch before replacing the blown fuse. In case the fuse is blown by an improper switch operation, replace the defective switch and fuse at the same time. Replace just the fuse if the switches operate normally.

4. COMPONENT ACTION

COOKING MODE

M/W GRILL-1 GRILL-2 GRILL-3 COMBI-1 COMBI-2

MANUAL COMBI-3 MODE COMBI-4

COMBI-5 CONVECTION100~130 CONVECTION140~150 CONVECTION160~250

ONE CAKE/BREAD TOUCH CRUSTY

ROAST BEEF ROAST CHICKEN ROAST PORK BAKED FISH

AUTO BAKED POTATO MODE ROAST POTATO

FRESH VEGETABLES FROZEN VEGETABLES CASSEROLE

MAGNETRON

●

UPPER ELEMENT

●

LOWER ELEMENT

●

REAR ELEMENT

●

CONVECTION F AN

●

10. WIRING DIA GRAM

11. EXPLODED VIEW AND PARTS LIST

1. DOOR ASSEMBLY

Refer to 6. Disassembly and assembly.

2. CONTROL PANEL ASSEMBLY

Refer to 6. Disassembly and assembly.

3. TOTAL ASSEMBLY

F48

F43

F81

F41

F40

F47

F46

F45

F39

F62

F64 F63

F65

F66

F67

F68

F69

F70

F71

F72

F73

F74

F55

F54

F53

F52

F61

F60

F59

F56

F42

F38

F37

F51

F50

F35

F36

F49

F57

F58

F80

F22

F25

F23

F21

F20

F34

F33

F27

F26

F24

F17

F32

F29

F28

F30

F16

F18

F44

F31

F08

F11

F10

F09

F12

F15

F13

F14

F19

A00

F07

F06

F05

F04

F03

F02

F01

B00

F75

F76

F77

F78

F79

NO PART CORD PART NAME DESCRIPTION Q'TY

A00 3511714040 DOOR AS KOC-1B4K0S 1 B00 3516724980 CONTROL PANEL AS KOC-1B4K0S 1

F01 3515202200 STOPPER HINGE *U AS KOR-121M0A 1 F02 7272400800 SCREW TAPTITE TT3 TRS 4X8 MFZN 1 F03 3510313500 BASE SBHG T0.8 1 F04 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 5 F05 3512101400 FOOT DASF-310 4 F06 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 4 F07 3518117010 TRANS HV DW-N95S0-1BT 1 F08 3518701400 FUSE HV 5KV 0.7A 1 F09 3518302300 CAPACITOR HV 2100VAC 1.10UF #187 1 F10 3518400400 DIODE HV HVR-1X-3AB 12KV #187 1 F11 3513003200 HOLDER HV CAPAITOR SECC T0.6 1 F12 7272400811 SCREW TAPTITE TT3 TRS 4X8 MFZN 1 F13 3511407500 COVER HEATER *U STS430 T0.5 1 F14 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 F15 3515304000 SUPPORET HEATER *U STS 430 T0.5 1 F16 3512802000 HEATER *U 230V 400W R18374001 1 F17 7113400814 SCREW TAPPING T1 RIN 4X8 MFZN 1 F18 3966510200 MOTOR SYNCRO 230V 25W GM-16-24FD24 1 F19 7112401011 SCREW TAPPING T1 TRS 4X10MFZN 1 F20 3517401900 COUPLER PTFE 1 F21 3511408300 COVER WAVE GUIDE MICA T0.35 1 F22 3516111300 CAVITY JOINT AS CAVITY JOINT AS 1 F23 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1 F24 3518002900 MAGNETRON 2M218H(F)P 1 F25 3516004000 SPECIAL SCREW TS BOLT FLANGE 5X12 DACRO 1 F26 3513804700 LOCK POM 1 F27 3513702100 LEVER SW MICRO POM KOG-846TOS 1 F28 4415A17352 SW MICRO VP-533A-0F SPNO #187 200G 2 F29 4415A66910 SW MICRO VP-531A-0F/SZM-V16-FA-61 2 F30 3513700800 LEVER LOCK POM 1 F31 3512717700 HARNESS MAIN KOC-1B0K0S 1 F32 7S627W50X1 NUT HEX 6N-1-4 BSNI 1 F33 3511800700 FAN CONVECTION SA1D T0.5 1 F34 7400504011 WASHER PLAIN PW-5-5-MFZN 1 F35 7113400814 SCREW TAPPING T1 BIN 4X8 MFNI 3

✔ Caution:

NO PART CODE PART NAME DESCRIPTION Q'TY

F36 3512766800 HARNESS CONVECTION-A KOC-1B0K0S 1 F37 3511407700 COVER HEATER *B SA1D-80 T0.5 1 F38 3513302900 INSULATOR HEATER *B SBHG-1 T0.5 1 F39 7113400814 SCREW TAPPING T1 BIN 4X8 MFNI 4 F40 3963514300 MOTOR SHADED POLE 230V 50HZ MW10CA-T02 1 F41 3511800800 FAN PP GF20 1 F42 7051400811 SCREW MACHINE PAN 4X8 SW MFZN 2 F43 7112401011 SCREW TAPPING T1 TRS 4X10MFZN 1 F44 3512803800 HEATER MIRACLON 115V 550W 270MM 2 F45 3512766900 HARNESS CONVECTION-B KOC-1B0K0S 1 F46 3511407400 COVER *B SA1D-80 T0.5 1 F47 7112401011 SCREW TAPPING T1 TRS 4X10MFZN 1 F48 3511407300 COVER MOTOR *B SA1D-80 T0.5 1 F49 3511800100 FAN PP GF20 1 F50 3963513000 MOTOR SHADED POLE 230V 25W OEM-15DWC2-A03 1 F51 3512515300 GUIDE WIND PP GF20 1 F52 3518605001 NOISE FILTER DWLF-M05 1 F53 3513003900 FUSE HV 1 F54 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 F55 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 1 F56 7121403011 SCREW TAPPING T2S PAN 4X30 MFZN 2 F57 35113A5QJ5 CORD POWER AS 3X1.5 80X80 120-RTML 1.4M 1 F58 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2 F59 3513602600 LAMP HALOGEN 2 F60 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2 F61 3518906100 THERMOSTAT OFF:90 ON:60 V#187 1 F62 7S312X40A1 SCREW TAPPING T1 TRS 4X10 MFZN 4 F63 3510803300 CABINET SECC T0.5 1 F64 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1 F65 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 2 F66 3513302800 INSULATOR HEATER *T SECC T0.5 1 F67 3512520500 GUIDE AIR OUTLET SA1D-80 T0.5 1 F68 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 1 F69 3511407800 COVER LAMP STS430 T0.5 1 F70 3511407600 COVER HEATER *T STS430 T0.5 1 F71 3512803800 HEATER MIRACLON 115V 550W 270MM 2 F72 3510607700 BRACKET HEATER *T SA1D T0.5 1

✔ Caution:

NO PART CODE PART NAME DESCRIPTION Q'TY

F73 7112401411 SCREW TAPPING T1 TRS 4X10 MFZN 1 F74 3512767000 HARNESS HEATER KOC-1B0K0S 1 F75 3517207300 TRAY RACK AS KOC-1B0KOS 120MM 1 F76 3517207310 TRAY RACK AS KOC-1B0KOS 30MM 1 F77 3517207200 TRAY METAL SPP T0.6 1 F78 3512521000 GUIDE ROLLER AS KOC-1B0K0S 1 F79 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 1 F80 3511407810 COVER LAMP T/GLASS T2.0 1 F81 7402704600 RING C CR-5 SK5 1

✔ Caution:

12. PRINTED CIRCUIT BO ARD

CIRCUIT CHECK PROCEDURE

1. Low voltage transformer check

The low voltage transformer is located on the P.C.B. Measuring condition: Input voltage: 120V / Frequency: 60Hz

2. Voltage Check

- Key check point

- Check method

NOTE

1. Secondary side voltage of the low voltage transformer changes in proportion to fluctuation of power source voltage.

2. The allowable tolerance of the secondary voltage is within ± 5% of nominal voltage.

NOTE: Each measure point must be measured with GND points.

: The marks of the above corresponding voltage (+5V, +24V) are written on the PCB.

Terminal

6-7 8-9

9-10

Voltage(olad)

AC 17.0 V

AC 1.3 V AC 1.3 V

Voltage(no load)

AC 19.9 V

AC 1.6 V AC 1.6 V

NO CHECK POINT REMARK

1 IC1 PIN 63, 64 5VDC±5% 2 IC1 PIN 38

3 IC1 PIN 33 OR 34

T : 20 ms(50Hz)

5V 0V

T : 250 ns(4MHz)

NO MEASURE POINT WAVE FORM REMEDY REMARK

1 A DC 5V±5% Replace ZD2, EC1 NO LOAD 2 B DC 24V±20% Replace D20-23, EC6 NO LOAD

3. Case of no microwave oscillation

1) When touching M/W button, oven lamp turns on and Fan motor and turntable rotate, and cook indicator in display comes on. *Cause: RELAY 1 does not operate.

2) When touching M/W button, oven lamp does not turn on and turntable motor does not rotate but cook indicator in display comes on. *Cause: RELAY 1 does not operate.

3) When touching M/W button, oven lamp turn on and turns on and fan motor does not rotate but cook indicator in display comes on. *Cause: RELAY 5 does not operate.

STATE

RELAY 1 ON

RELAY 1 OFF

POINT A

+5V DC

GND

POINT B

GND

+24V DC

STATE

RELAY 4 ON

RELAY 4 OFF

POINT A

+5V DC

GND

POINT B

GND

+24V DC

STATE

RELAY 5 ON

RELAY 5 OFF

POINT A

+5V DC

GND

POINT B

GND

+24V DC

4. Case of no heating of upper grill

When touching GRILL1 & COMBI button, oven lamp turns on and Fan motor and turntable rotate, and cook indicator in display comes on. *Cause: RELAY 2 does not operate.

5. Case of no heating of lower grill When touching GRILL2 & COMBI button, oven lamp turns on and Fan motor and turntable rotate and cook indicator in display comes on. *Cause: RELAY 7 does not operate.

6. Case of no heating of convection grill When touching CONVECTION button, oven lamp turns on and Fan motor and turntable rotate and cook indicator in display comes on. *Cause: RELAY 3 does not operate.

STATE

RELAY 2 ON

RELAY 2 OFF

POINT A

+5V DC

GND

POINT B

GND

+24V DC

STATE

RELAY 7 ON

RELAY 7 OFF

POINT A

+5V DC

GND

POINT B

GND

+24V DC

STATE

RELAY 3 ON

RELAY 3 OFF

POINT A

+5V DC

GND

POINT B

GND

+24V DC

7. Case of no stopping of the count down timer

When the door is opened during operation, the count down timer does not stop.

POINT

STATE

DOOR OPEN

DOOR CLOSED

OPEN

+5V DC

GND

CHECK NO METHOD REMEDY

1 Check the stage(ON,OFF) of the door open Replace door open monitor swith.

monitor switch by resistance measurement.

13. P.C.B. CIRCUIT DIA GRAM

NO NAME SYMBOL SPECIFCATION PART CODE Q'TY

1 PCB MAIN M231 95.5 X 197 3514322720 1 2 PCB SUB M232 88 X 197 3514322730 1 3 BUZZER BZ1 BM-20K 3515600100 1 4 CAPACITOR CERAMIC C1~C4,C7~C12 104 50V Z AXIAL CCZF1H104Z 10 5 CAPACITOR CERAMIC C5,C6 102 50V Z AXIAL CCZB1H102K 2 6 CAPACITOR ELECTRO EC1 50V RS 10uF CEXE1H100A 1 7 CAPACITOR ELECTRO EC2,EC4 35V RSS 220uF CEXF1V221V 2 8 CAPACITOR ELECTRO EC6 35V RSS 1000uF CEXF1V102V 1

9 CAPACITOR ELECTRO EC5 50V RSS 220uF CEXF1H221V 1 10 CAPACITOR ELECTRO EC3 50V RSS 100uF CEXF1H101V 1 11 CONNECTOR FILM CN3 HLEM15S-1 4CW215SBD0 1 12 CONNECTOR WAFER CN1 35313-0210 30166M7020 1 13 CONNECTOR WAFER CN2 35312-0310 30166M5030 1 14 CONNECTOR WAFER CN4 35328-0610 4CW3061MX0 1 15 DIODE SWITCHING D1~D17 1N4148 AUTO 52mm DZN4148--- 17 16 DIODE RECTIFYING D18~D23 1N4004A AUTO 52mm DZN4004A-- 6 17 DIODE ZENER ZD1 UZ -3.3BSB DZUZ3R3BSB 1 18 DIODE ZENER ZD5 UZ -3.9BSB DZUZ3R9BSB 1 19 DIODE ZENER ZD2 UZ -5.6BSB DZUZ5R6BSB 1 20 DIODE ZENER ZD4 UZ -13BSA DZUZ13BSA- 1 21 DIODE ZENER ZD3 UZ -24BSB DZUZ24BSB- 1 22 DIGITRON DP1 HNM-07MS12 DHNM07MS12 1 23 HOLDER VFD DPH NYLON 66 3513002000 1 24 IC MICOM IC1 TMP87CK14N-2B01 13GS1B1K00 1 25 RESISTOR R2,R3,R7~R9,R16 1/6W 10K Ohm 5% RD-AZ103J- 6 26 RESISTOR R1,R4,R18,R20 1/6W 1K Ohm 5% RD-AZ102J- 4 27 RESISTOR R5 1/6W 200 Ohm 5% RD-AZ201J- 1 28 RESISTOR R6 1/6W 1M Ohm 5% RD-AZ105J- 1 29 RESISTOR R13~R15,R17 1/6W 4.7K Ohm 5% RD-AZ472J- 4 30 RESISTOR R25 1/6W 47K Ohm 5% RD-AZ473J- 1 31 RESISTOR R19 1/4W 1K Ohm 5% RD-4Z102J- 1 32 RESISTOR R23 1/2W 270 Ohm 5% RD-2Z271JS 1 33 RESISTOR R24 1/2W 27 Ohm 5% RD-2Z270JS 1 34 RESISTOR R21,R22 1/2W 200 Ohm 5% RD-2Z201JS 2 35 RESISTOR R10 1/4W 301K Ohm 1% RN-4Z3013F 1 36 RESISTOR R11 1/4W 10K Ohm 1% RN-4Z1002F 1 37 RESISTOR R12 1/4W 120K Ohm 1% RN-4Z1203F 1 38 RESISTOR ARRAY RA1 7P(6) 1/8 100K 5% RA-87X104J 1 39 RESISTOR ARRAY RA2,RA3 5P(4) 1/8 100K 5% RA-85X104J 2 40 RESONATOR CERAMIC CR1 CRT-4.00MS 5P4R00MTS- 1 41 SW RELAY RY1 G5G-1A-DT 24V 5SC0101124 1 42 SW RELAY RY2,RY3 G5G-1A-DT 24V 5SC0101124 2

" (OZF-S-124LM1P) 5SC0101117 2 43 SW RELAY RY4~RY7 CS11-24SH 5SC0101129 4 44 TRANSISTOR Q1,Q2 KTA1266Y AUTO TZTA1266Y- 2 45 TRANSISTOR Q3,Q4,Q12,Q15 KTC3198GR AUTO TZTC3198GR 4 46 TRANSISTOR Q14 KTC-1027Y AUTO TZTC1027Y- 1 47 TRANSISTOR Q5~Q11,Q13 KRC106M AUTO TZRC106M-- 8 48 TRANS POWER LVT1 DMR-210FS 5EPV041410 1 49 WIRE COPPER 20mm J2 1/0.52 TIN COATING 85801052GY 1 50 WIRE COPPER12.5mm J3~J7 1/0.52 TIN COATING 85801052GY 5 51 WIRE COPPER 10mm J1,J8,J9,J16 1/0.52 TIN COATING 85801052GY 4 52 WIRE COPPER 7.5mm J10~J15 1/0.52 TIN COATING 85801052GY 6 53 CONNECTOR WAFER CN101 HLEM15R-1 4CW215RBD0 1 54 RESISTOR R101,R102 1/6W 1K Ohm 5% RD-AZ102J- 2 55 RESISTOR R103,R104 1/6W 10K Ohm 5% RD-AZ103J- 2 56 SW ROTARY EN101 SDB161PVB17F-1-2- 5S10109002 1

36-36PC(PITCH5) 57 SW TACT SW101~SW115 KPT-1115AM 5S50101Z93 15 58 WIRE COPPER 15mm J101 1/0.50 TIN COATING 85801052GY 1 59 WIRE COPPER 10mm J102~J104,J106 1/0.51 TIN COATING 85801052GY 4 60 WIRE COPPER 7.5mm J105 1/0.51 TIN COATING 85801052GY 1 61 WIRE FLAT WF1 1.25X15X90XC WSJ-159007 1

PCB ASS’Y PART LIST

✔ Caution:

S/M NO.:C1B4K0S001

DAEW OO ELECTRONICS CO ., LTD.

686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” FAX: 02) 360-8184 TEL: 02) 360-8183

http://www.daewoo.co.kr

PRINTED DATE: APR. 2001

Daewoo KOC-1B4K5S, KOC-1B4K Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual