Daewoo KOC-910K0P Service Manual
  1. Manuals
  2. Brands
  3. Daewoo Manuals
  4. Microwave Oven
  5. KOC-910K0P
  6. Service manual
Daewoo KOC-910K0P Service Manual

Daewoo KOC-910K0P Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual

Microwave Oven

Model : KOC-910K0P(AL)
KOC-911K9P
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.
S/M No : C910K0PAL2
MAR . 2005

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the KOC-910K0P and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Daewoo KOC-910K0P

Summary of Contents for Daewoo KOC-910K0P

  • Page 1: Microwave Oven

    S/M No : C910K0PAL2 Microwave Oven Model : KOC-910K0P(AL) KOC-911K9P 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.

  • Page 2: Table Of Contents

    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 micro- wave 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.

  • Page 3: Safety And Precautions

    SAFETY AND PRECAUTIONS 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.

  • Page 4: Specifications

    SPECIFICATIONS MODEL KOC-910K0P KOC-911K9P POWER SUPPLY 127V~60Hz, SINGLE PHASE WITH EARTMING MICROWAVE 1550W POWER GRILL 1600W CONSUMPTION CONVECTION 2300W COMBINATION 3000W MICROWAVE ENERGY OUTPUT 1000W (IEC705) MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 542 x 329 x 515 mm (21.3 x 13.0 x 20.3 in) 542 x 329 x 526 mm (21.3 x 13.0 x 20.7 in) CAVITY DIMENSIONS (W X H X D) 350 x 230 x 355 mm (13.8 x 9.1 x 14.0in)

  • Page 5: External View

    EXTERNAL VIEW 1. OUTER DIMENSION • • KOC-910K • • KOC-911K...

  • Page 6: Feature Diagram

    2. FEATURE DIAGRAM 1. 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. 2. DOOR VIEWING SCREEN Allows viewing of food. The screen is designed so that light can pass through, but not the microwave. 3.

  • Page 7: Control Panel

    3. CONTROL PANEL (KOC-910K) DISPLAY WINDOW 11. LANGUAGE - Press to select the language. 1. MICROWAVE - indicator, showing microwaving in 12. CRUSTY - Press to select crusty menu. progress. 13. CAKE - Press to select cake menu. 2. DEFROST - Indicator, showing defrosting in progress. 14.
  • Page 8 (KOC-911K) DISPLAY WINDOW 12. LANGUAGE - press to select the language. 1. MICROWAVE - indicator, showing microwaving in 13. CRUSTY - Press to select crusty menu. progress. 14. CAKE - Press to select cake menu. 2. DEFROST- indicator, showing defrosting in 15.

  • Page 9: Installation

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

  • Page 10: Disassembly And Assembly

    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.
  • Page 11 1. To remove cabinet 1) Remove four screws on cabinet back. 2) Push the cabinet backward. 2. To remove guide wind assembly 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 assembly.
  • Page 12 3. To remove door parts. (KOC-910K) REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3512603600 HANDLE DOOR 3512204800 FRAME DOOR 3517007100 BARRIER-SCREEN*O TEMP GLASS T3.2 3515204900 STOPPER HINGE*T AS KOC-1B0K0S 3512302400 GASKET DOOR 7122400811 SCREW TAPPING T2S TRS 4X8 MFZN 3513101200 HOOK 3515102300...
  • Page 13 (KOC-911K) REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3512603610 HANDLE DOOR 3512204810 FRAME DOOR 3517117100 BARRIER-SCREEN*O TEMP GLASS T3.2 3515204900 STOPPER HINGE*T AS KOC-1B0K0S 3512302400 GASKET DOOR 7122400811 SCREW TAPPING T2S TRS 4X8 MFZN 3513101200 HOOK 3515102300 SPRING HOOK 3511714800 DOOR PAINTING AS KOC -910K0S...
  • Page 14 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.
  • Page 15 5. To remove control panel parts. (KOC-910K) REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3515501800 WINDOW DISPLAY PMMA 3516725200 CONTROL PANEL 3516909000 BUTTON FUNCTION-A ABS SG-175, AF-0760D 3516909200 BUTTON FUNCTION-C ABS SG-175, SG-0760D 3516909100 BUTTON FUNCTION-B ABS SG-175, SG-0760D 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN...
  • Page 16 (KOC-911K) REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 3515501810 WINDOW DISPLAY PMMA 3516725210 CONTROL PANEL 3516909010 BUTTON FUNCTION-A ABS SG-175, AF-0760D 3516909210 BUTTON FUNCTION-C ABS SG-175, SG-0760D 3516909110 BUTTON FUNCTION-B ABS SG-175, SG-0760D 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN PKMPMSYN30 PCB MAIN MANUAL AS KOC-911K9C...
  • Page 17 6. To remove high voltage 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.
  • Page 18 8. To remove wind guide assembly. 1) Remove a screw for earthing. 2) Remove a screw which secure the wind guide assembly. 3) Draw forward the wind guide assembly. 4) Pull the fan from the motor shaft. 5) Remove two screws which secure the motor shaded pole. 6) Remove the motor shaded pole.
  • Page 19 10. To remove Lamp assembly parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3512520500 GUIDE AIR OUTLE SA1D T0.5 3513303000 INSULATOR HEATER *T SECC T0.5 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3511407800 COVER LAMP STS430 T0.5...
  • Page 20 11. To remove Top heater assembly parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3512520500 GUIDE AIR OUTLET SA1D T0.5 3513303000 INSULATOR HEATER *T SECC T0.5 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3512767000 HARNESS HEATER KOC-1B0K0S...
  • Page 21 12. To remove Rear heater assembly parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3511407300 COVER MOTOR *B SA1D-80 T0.5 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3511407900 COVER *B SA1D-80 T0.5 3512766900 HARNESS CONVECTION-B KOC-1B0K0S...
  • Page 22 13. To remove Motor synchro. And Under heater assembly parts. CUTTING (6EA) REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3511407500 COVER HEATER *U STS430 T0.5 3515304000 SUPPORTER HEATER *U STS 430 T0.5 3512804510 HEATER *U 127V 400W R28374001...

  • Page 23: Interlock Mechanism And Adjustment

    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. SWITCH MOUNTING SWITCH MOUNTING BRACKET...

  • Page 24: Trouble Shooting Guide

    TROUBLE SHOOTING 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 transformer, disconnect one lead wire from these parts and check continuity with the AC plug removed.
  • Page 25 CONDITION CHECK RESULT CAUSE REMEDY Replace Defective Outlet has Check continuity of magnetron Continuity magnetron proper volt- age Fuse does not Replace blow? Open power Check continuity of Continuity power supply cord supply cord Continuity Replace Defective touch control circuit NOTE All these switches must be replaced at the same time, please refer to (7.
  • Page 26 (TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY No Continuity Replace Check continuity of high Defective high microwave voltage fuse voltage fuse oscillation No microwave oscillation Continuity Check continuity of high Defective high voltage capacitor terminals voltage trans- with wires removed...
  • Page 27 (TROUBLE 4) Grill heater (upper heater) is not heated; food will not become hot. CONDITION CHECK RESULT CAUSE REMEDY Malfunction of Adjust or Check continuity of Grill heater is primary Interlock replace continuity primary interlock switch not heated. switch Adjust or Malfunction of Check continuity of replace...
  • Page 28 (TROUBLE 6) Lower heater is not heated; food will not become hot. CONDITION CHECK RESULT CAUSE REMEDY Malfunction of Adjust or Check continuity of Lower heater primary Interlock Replace continuity Primary interlock switch is not heated. switch Adjust or Check continuity of Malfunction of replace secondary interlock...
  • Page 29 (TROUBLE 8) When “ERROR 2” or “ERROR 3” come on display. CAUSE REMEDY CONDITION CHECK RESULT Defective “ERROR 2 or 0Ω or infinite Replace Check continuity of thermistor thermistor ERROR 3” (resistance of thermistor) come on dis- play Approx. 200k~300kΩ (room temper- ature) Defective...

  • Page 30: Measurement And Test

    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.

  • Page 31: Microwave Radiation Test

    2. MICROWAVE RADIATION TEST 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.

  • Page 32: Component Test Procedure

    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.

  • Page 33: Component Action

    4. COMPONENT ACTION MAGNE- UPPER LOWER REAR CONVEC- COOKING MODE TRON ELEMENT ELEMENT ELEMENT TION FAN GRILL-1 GRILL-2 GRILL-3 COMBI-1 COMBI-2 MANUAL COMBI-3 MODE COMBI-4 COMBI-5 CONVECTION100~130 CONVECTION140~150 CONVECTION160~250 CAKE/BREAD TOUCH CRUSTY ROAST BEEF ROAST CHICKEN ROAST PORK AUTO BAKED FISH MODE BAKED POTATO ROAST POTATO...

  • Page 34: Wiring Diagram

    WIRING DIAGRAM...

  • Page 35: Exploded View And Parts List

    EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassembly and assembly. 2. CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly. 3. TOTAL ASSEMBLY...
  • Page 36 PART CODE PART NAME DESCRIPTION Q'TY 3511714500 DOOR AS KOC-910K0P 3511714510 DOOR AS KOC-911K9P PKCPSWYM00 CONTROL PANEL AS KOC-910K0P PKCPSWYN00 CONTROL-PANEL AS KOC-911K9P 3515202800 STOPPER HINGE *U AS KOR-121M0A 7172400811 SCREW TAPTITE TT3 TRS 4 X 8 MFZN 3510313600 BASE SBHG T0.8...
  • Page 37 PART CODE PART NAME DESCRIPTION Q'TY 7400504211 WASHER PLAIN PW-5-5 BRASS 7113400814 SCREW TAPPING T1 BIN 4 X 8 MFNI 3512766800 HARNESS CONVECTION-A KOC-1B0K0S 3511407700 COVER HEATER*B SA1D T0.5 3513302900 INSULATOR HEATER*B SA1D T0.5 7113400814 SCREW TAPPING T1 BIN 4•8 MFNI 3963514300 MOTOR SHADED POLE 220V 60HZ MW10GA-T01...
  • Page 38 PART CODE PART NAME DESCRIPTION Q'TY 3517202611 TRAY RACK AS KOC-961C0S 117MM 3517202601 TRAY RACK AS KOC-961C0S 27MM 3517205200 TRAY METAL SPP T0.6 3512521000 GUIDE ROLLER AS KOC-1B0K0S 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 3514801400 SENSOR TEMPERATURE PTM-312-D7 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN...

  • Page 39: Printed Circuit Board

    PRINTED CIRCUIT BOARD CIRCUIT CHECK PROCEDURE 1. Low voltage transformer check The low voltage transformer is located on the P.C.B. Measuring condition: Input voltage: 127V / Frequency: 60Hz Terminal Voltage(olad) Voltage(no load) AC 17.0 V AC 19.9 V AC 1.3 V AC 1.6 V 9-10 AC 1.3 V...
  • Page 40 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 dis- play comes on. *Cause: RELAY 1 does not operate. 1N4148 G5G-1A-DT 24V C106M STATE POINT A POINT B RELAY 1 ON...
  • Page 41 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 indica- tor in display comes on. *Cause: RELAY 2 does not operate. UPPER 1N4148 GRILL G5G-1A-DT 24V C106M...
  • Page 42 7. Case of no stopping of the count down timer When the door is opened during operation, the count down timer does not stop. 35313-0210 1N4148 104Z D.O.M SW POINT STATE DOOR OPEN OPEN +5V DC DOOR CLOSED CLOSE CHECK NO METHOD REMEDY Check the stage(ON,OFF) of the door open...

  • Page 43: Pcb Circuit Diagram

    P.C.B. CIRCUIT DIAGRAM...
  • Page 44 PCB ASS’Y PART LIST NAME SYMBOL SPECIFCATION PART CODE Q'TY BUZZER BM-20K 3515600100 CAPACITOR CERAMIC C2,C8~C15 104 50V Z AXIAL CCZF1H104Z CAPACITOR CERAMIC 102 50V Z AXIAL CCZB1H102K CAPACITOR ARRAY 6P(5) 1000pF 50V CN5XB-102M CAPACITOR ELECTRO 50V RS 10µF CEXE1H100A CAPACITOR ELECTRO EC2,EC3 35V RSS 220µF...
  • Page 45 NAME SYMBOL SPECIFCATION PART CODE Q'TY RESONATOR CERAMIC CRT4.00MS 5P4R00MTS- SW RELAY RY1~RY3 G5G-1A-DT 24V 5SC0101124 SW RELAY RY4~RY7 CS11-24SH 5SC0101129 TRANSISTOR Q1,Q5 KTA1266Y AUTO TZTA1266Y- TRANSISTOR Q6,Q7,Q13,Q15 KTC3198GR AUTO TZTC3198GR TRANSISTOR KTC-1027Y AUTO TZTC1027Y- TRANSISTOR Q2~Q4,Q9~Q12,Q14 KRC106M AUTO TZRC106M-- TRANS POWER LVT1 DMR-210PF...
  • Page 46 DAE WOO E LE C TR ONIC S C OR P . 686, AHY E ON-DONG , MAP O-G U, S E OUL, K OR E A. C .P .O. B OX 8003 S E OUL K OR E A P R INTE D DATE : MAR 2005...

This manual is also suitable for:

Koc-910k0palKoc-911k9p

Table of Contents