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  5. Service Manual

Daewoo KOM-9P2CBS Service Manual - Door Assembly :

Summary of KOM-9P2CBS

  • Page 1

    Service manual microwave oven model: kom-9p2cbs s/m no. : om9p2cbs001 may. 2012 ✔ 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 info...

  • Page 2

    1 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- w...

  • Page 3: Safety and Precautions

    2 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 trai...

  • Page 4: Specifications

    3 specifications power supply 240v ac, 50hz single phase with grounding input power 1600 w microwave energy output 1100 w frequency 2,450mhz outside dimensions (w h d) 542 x 329 x 461 mm cavity dimensions (w h d) 350 x 230 x 357 mm cavity volume 29 l net weight approx. 18 kg timer 60 min. Power sele...

  • Page 5: External View

    4 1. Outer dimension external view 542 461 329.

  • Page 6

    5 3 5 2 6 4 7 8 1 1 1 safety interlock system. 2 2 door viewing screen - allows viewing of food. The screen is designed so that light can pass through, but not the microwave. 3 3 door hook - when door is closed, it will auto- matically shut off. If the door is opened while the oven is operating, mag...

  • Page 7

    6 3 4 1 2 5 6 8 9 0 q w 7 1 1 microwave indicator, showing microwaving in progress. 2 2 defrost indicator, showing defrosting in progress. 3 3 percentage of power indicator. 4 4 child lock indicator. 5 5 program - used to save cooking data. 6 6 defrost - used to defrost foods for time. 7 7 time set ...

  • Page 8: Installation

    7 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,...

  • Page 9: Operations and Functions

    8 make sure the oven is properly installed and plugged into the electrical. Operations and functions 1 1. Connect the mains lead to an electrical outlet. 1 2. After placing the food in a suitable container, open the oven door and put it on the glass tray. The glass tray must always be in place durin...

  • Page 10: Disassembly and Assembly

    9 disassembly and assembly cautions to be observed when troubleshooting. 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 da...

  • Page 11

    10 1. To remove cabinet 1) remove four screws on cabinet back. 2) pull the cabinet backward. 2. To remove door assembly 1) remove three screws which secure the stopper hinge top. 2) remove the door assembly from top plate of cavity. 3) reverse the above for reassembly. Note : after replacing the doo...

  • Page 12: Door Assembly :

    11 3. To remove door parts. A07 a05-2 a05-3 a05-1 a05 a08 a04 a03 a06 a09 a01 a10 a02 1) remove the gasket door from the door painting as. 2) remove the barrier screen inner from the door painting as. 3) remove the door sub as from the door painting as. 4) remove the stopper hinge top as from the do...

  • Page 13

    12 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 the stopper hinge top, and then push the door to contact the door seal to the oven front sur- face. • tighten two screws. (2) to reduce gap located on part ‘b...

  • Page 14: C/panel Assembly :

    13 5. To remove control panel parts. B05 b02 b03 b01 b04 1) remove the screw which secure the control panel as, push up two snap fits and draw forward the control panel assem- bly. 2) remove four screws which secure the pcb assembly to the control panel as. 3) disconnect membrane tail from the conne...

  • Page 15: Guide Wind Assembly :

    14 6. To remove guide wind parts. Guide wind assembly : 3512524450 c05 c02 c03 c04 c01 1) remove two screws for earthing and for fixing to rear-plate. 2) remove the noise filter from the guide wind. 3) pull the fan from the motor shaft. 4) remove two screws which secure the motor shaded pole. 5) rem...

  • Page 16

    15 7. To remove high voltage capacitor. 1) remove the 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 8. To remove magnetron. 1) rem...

  • Page 17

    16 9. To remove wind guide assembly. 1) remove the screw for earthing. 2) remove the noise filter from the wind guide. 3) remove the 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 ...

  • Page 18

    17 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. (3) adjustment steps a) ...

  • Page 19: Troubleshooting Guide

    18 (trouble 1) oven does not operate at all ; any inputs can not be accepted. Troubleshooting 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. ...

  • Page 20

    19 condition check check continuity of magnetron defective magnetron result no continuity cause remedy replace outlet has proper voltage fuse does not blow. Display do not shown countdown malfunction of secondary interlock switch replace check continuity of power supply cord open power supply cord n...

  • Page 21

    20 (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 remedy replace no microwave oscillation check continuity of high voltage rectifier...

  • Page 22

    21 (trouble 4) the following visual conditions indicate a probable defective touch control circuit 1. Incomplete segments, 1) segments missing. 2) partical segments missing. 3) digit flickering other than normal display slight flickering. 4) " :0" does not display when power is on. 2. A distinct cha...

  • Page 23: Measurement and Test

    22 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. A cylindrical container of borosilicate glass is used for the ...

  • Page 24

    23 2. Microwave radiation test procedures 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 600cc glass beaker with an inside diameter of approx. 95mm(3.5in.). 3. Place it at the center...

  • Page 25

    24 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 ...

  • Page 26: Wiring Diagram

    25 wiring diagram.

  • Page 27: Printed Circuit Board

    26 1. Circuit check procedure 1. Low voltage transformer check the low voltage transformer is located on the p.C.B. Measuring condition: input voltage: 230v / frequency: 50hz 2. Voltage check note : each measure point must be measured with gnd points. Note : 1. Refer to ciruit diagram (point 4). 2. ...

  • Page 28

    27 measure point mp1 mp2.

  • Page 29

    28 3. When there is no microwave oscillation 1) when touching start pad, oven lamp does not turn on. Fan motor do not rotate, but cook indicator in display comes on. * cause : relay 2 does not operate. → refer to circuit diagram (point 3) - check method 3. When there is no microwave oscillation 1) w...

  • Page 30

    29 dmr-1p5fs 2. Pcb circuit diagram.

  • Page 31

    30 3. Pcb location no. 1 buzzer bz1 bm-20k (bujeon) 3515600100 1 2 c cera c1~9 hikf 50v 0.1mf z axial cczf1h104z 9 3 c electro ec1 50v rs 0.1mf (5x11) tp cexe1h108a 1 4 c electro ec2 50v rs 10mf (5x11) tp cexe1h100a 1 5 c electro ec3 50v rs 2.2mf (5x11) tp cexe1h229a 1 6 c electro ec4 35v rss 220mf ...

  • Page 32: Exploded View and Parts List

    31 1. Door assembly refer to disassembly and assembly. 2. Control panel assembly refer to disassembly and assembly. 3. Guide wind assembly refer to disassembly and assembly. 4. Total assembly exploded view and parts list a00 b00 f49 f09 f06 f05 f04 f01 f19 f20 f02 f51 f50 f40 f39 f38 f42 f34 f17 f11...

  • Page 33

    32 a00 3511731000 door as kom-9p2cbs 1 b00 pkcpswzz12 control-panel as kom-9p2cbs 1 f01 3516121900 cavity as kom-9p0c9s 1 f02 3966031300 motor syncro sm16f -hk36t1fy 1 f03 7121400611 screw tapping t2s pan 4x6 mfzn 1 f04 3517101600 stirrer blade al050-h18 t0.7 1 f05 3517402400 coupler stirrer pps 1 f...

  • Page 34

    S/m no. : om9p2cbs001 daewoo electronics corp. 1-2, jeo-dong 1(il)-ga, jung-gu, seoul, korea c.P.O. Box 8003 seoul, korea telex: dwelec k28177-8 cable: “daewooelec” printed date: may. 2012.

  • Page 35: About This Manual

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