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Manual Daewoo KOR-861H0A

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  • Daewoo KOR-861H0A - page 1

    Service Manual Microwave Oven Aug. 2003 S/M No. : R631G0A003 Model: KOR-631G0A KOR-631H0A KOR-631G9A KOR-631H9A KOR-861G0A KOR-861H0A • 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 re ...

  • Daewoo KOR-861H0A - page 2

    1 PRECAUTIONS T O BE OBSERVED BEFORE AND DURING SERVICING T O A VOID POSSIBLE EXPOSURE T O EXCESSIVE MICROW A VE 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: ( ...

  • Daewoo KOR-861H0A - page 3

    2 SAFETY AND PRECAUTIONS 1. FOR SAFE OPERA TION 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 ...

  • Daewoo KOR-861H0A - page 4

    3 MODEL KOR-631G/H KOR-631 G/ H9A KOR-861G/H POWER SUPPLY 120V~60Hz, SINGLE PHASE WITH GROUNDING POWER MICROWAVE 1200W 1000W 1000W CONSUMPTION GRILL COMBINATION MICROWAVE ENERGY OUTPUT 800W 700W 900W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 465x279x360 mm (18.3x11.0x14.2 in) 495x294x388 mm (19.5x11.6x15.3 in) CAVITY DIMENSIONS (W ...

  • Daewoo KOR-861H0A - page 5

    4 EXTERNAL VIEW 1. OUTER DIMENSION(KOR-631G/H, 631 G/ H9/KOR-861G/H) 4 65/ 495 279/29 4 3 60/ 388 2 79/ 294 ...

  • Daewoo KOR-861H0A - page 6

    5 1. DOOR SEAL Door seal maintains the microwave within the oven cavity and prevents microwave leakage. 2. DOOR HOOK When the door is closed, it will automatically lock shut. If door is opened while oven is operating, magnetron tube will immediately stop operating. 3. DOOR SCREEN Allows viewing of food. Microwave cannot pass through perforations in ...

  • Daewoo KOR-861H0A - page 7

    6 1. Time set pad – Used to set the cooking time and the present time. 2. Display – Cooking time, power level, indicators and present time are displayed. 3. One touch – Used to cook or reheat specific quantities of food. 4. Auto cook – Used to cook or reheat. 5. More – Used to add time to cooking. 6. Less – Used to remove time from cook ...

  • Daewoo KOR-861H0A - page 8

    7 1. Time set pad – Used to set the cooking time and the present time. 2. Display – Cooking time, power level, indicators and present time are displayed. 3. One touch – Used to cook or reheat specific quantities of food. 4. More – Used to add time to cooking. 5. Less – Used to remove time from cooking. 6. Auto Defrost – Used to defrost ...

  • Daewoo KOR-861H0A - page 9

    8 INST ALLA TION 1. Steady , flat location. This microwave oven should be set on a steady, flat surface. 2. Leave space behind and side. All air vents should be kept a clearance. If all vents are covered during operation, the oven may be overheated and, eventually, cause oven failure. 3. Away from radio, and TV sets Poor television reception and ra ...

  • Daewoo KOR-861H0A - page 10

    9 OPERA TIONS AND FUNCTIONS 1. Connect the main lead to an electrical outlet. 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 during cooking. 3. Close the door securely. 4. When the oven door is opened, the light turns off. 5. The oven door can be opened at a ...

  • Daewoo KOR-861H0A - page 11

    10 DISASSEMBL Y AND ASSEMBL Y 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 ob ...

  • Daewoo KOR-861H0A - page 12

    11 1. T o remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. 2. T o remove door 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 reassembly. NOTE : After replacing the door assembly, perform a check of correct alignment ...

  • Daewoo KOR-861H0A - page 13

    12 3. T o remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK A01 3512203870 FRAME DOOR ABS SG-175, SG-0760B 1 A02 3517006180 BARRIER-SCREEN*0 SAN T1.5 1 A03 3515304610 SUPPORTER BARR-S*0 PP 1 A04 3515204100 STOPPER SINGE *T AS KOR-63150S 1 A05 3511705500 DOOR WELD AS KOR-61150S 1 A06 3517002800 BARRIER-SCREEN *I POLYESTER T0.1 ...

  • Daewoo KOR-861H0A - page 14

    13 4. Method to reduce the gap between the door seal and the oven front surface. (1) To reduce gap located on part ‘ A ’ Loosen a 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 p ...

  • Daewoo KOR-861H0A - page 15

    14 5. T o remove control panel parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK B01 3518521000 SWITCH MEMBRANE KOR-631G0A/9A 1 3518521010 SWITCH MEMBRANE KOR-631H0A/9A 1 B02 3516719500 CONTROL PANEL ABS AF-345 HFA-700HT 1 3516719530 CONTROL PANEL VT-0826, AF-348 1 KOR-631G/H9A B03 3514320660 PCB AS KOR-631H9A 1 B04 7122401211 SCREW TAPP ...

  • Daewoo KOR-861H0A - page 16

    15 6. T o 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. T o remove magnetron. 1) Remove a screw which secure the magnetron. 2) Remo ...

  • Daewoo KOR-861H0A - page 17

    16 8. T o remove wind guide assembly . 1) Remove a screw which secure the wind guide assembly. 2) Draw forward the wind guide assembly. 3) Pull the fan from the motor shaft. 4) Remove two screws which secure the motor shaded pole. 5) Remove the motor shaded pole. 6) Reverse the above steps for reassembly. 9. T o remove H.V .transformer . 1) Remove ...

  • Daewoo KOR-861H0A - 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. (1) Primary interlock switch When the door is closed, the hook locks the o ...

  • Daewoo KOR-861H0A - page 19

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

  • Daewoo KOR-861H0A - page 20

    19 CONDITION CHECK Check continuity of magnetron Defective mag- netron RESULT No Continuity CAUSE REMEDY Replace Outlet has proper volt- age Fuse does not blow. CONDITION CHECK Check continuity of primary inter- lock switch Malfunction of pri- mary interlock switch RESULT No Continuity CAUSE REMEDY Adjust or replace Turn table motor and oven lamp d ...

  • Daewoo KOR-861H0A - 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 trans- former REMEDY Replace No microwave oscillation Check continuity of high voltage rectifier in forward and backward direction with DC megge ...

  • Daewoo KOR-861H0A - page 22

    21 (TROUBLE 4) The following visual conditions indicate a probable defective touch control circuit or membrane switch assembly. 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 change in the displ ...

  • Daewoo KOR-861H0A - page 23

    22 MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICROW A VE 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 i ...

  • Daewoo KOR-861H0A - page 24

    23 2. MICROW A VE RADIA TION 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 of the tray and set it in a ...

  • Daewoo KOR-861H0A - 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 from its power source and discharge the capa ...

  • Daewoo KOR-861H0A - page 26

    25 WIRING DIAGRAM ...

  • Daewoo KOR-861H0A - page 27

    26 1. CIRCUIT CHECK PROCEDURE 1. Low V oltage Transformer check • The low voltage transformer is located on the P.C.B. • Measuring condition: input voltage : 120V/Frequency : 60Hz 2. V oltage check • Key check point • Check method PRINTED CIRCUIT BOARD NO CHECK POINT REMARK 1 IC 1 PIN 2, 21, 30, 34 -5 VDC 2 IC 1 PIN 35 3 IC 1 PIN 31 OR 32 N ...

  • Daewoo KOR-861H0A - page 28

    27 Measure Point ...

  • Daewoo KOR-861H0A - 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 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indica ...

  • Daewoo KOR-861H0A - page 30

    29 2. PCB CIRCUIT DIAGRAM 1) KOR-631G0A/631H0A/631H9A/631G9A ...

  • Daewoo KOR-861H0A - page 31

    30 NO. NAME SYMBOL SPECIFICATION PART CODE Q'TY 1 BUZZER BZ1 BM-20K 3515600100 1 2 C ARRAY CA1 7P(6) 102 M 50V CN6XB-102M 1 3 CAPACITOR ELEC EC1 25V RSS 100uF CEXE1C101V 1 4 CAPACITOR ELEC EC2 25V RSS 1000uF DEZF1E102V 1 5 CONNECTOR WAFER CN1 YW396-02AV 3519150520 1 6 CONNECTOR WAFER CN2 YW396-05AV 3519150510 1 7 CONNECTOR WAFER CN3 FCZ254-11 ...

  • Daewoo KOR-861H0A - page 32

    31 NO. NAME SYMBOL SPECIFICATION PART CODE Q'TY 1 BUZZER BZ1 BM-20K 3515600100 1 2 C ARRAY CA1 7P(6) 102 M 50V CN6XB-102M 1 3 CAPACITOR ELEC EC1 16V RSS 100uF CEXF1C101V 1 4 CAPACITOR ELEC EC2 25V RSS 1000uF CEXF1C102V 1 5 CONNECTOR WAFER CN1 YW396-02V 3519150520 1 6 CONNECTOR WAFER CN2 YW396-05V 3519150510 1 7 CONNECTOR WAFER CN3 FCZ254-11 44 ...

  • Daewoo KOR-861H0A - page 33

    32 1. DOOR ASSEMBL Y Refer to Disassembly and assembly . 2. CONTROL P ANEL ASSEMBL Y Refer to Disassembly and assembly . 3. TOT AL ASSEMBL Y EXPLODED VIEW AND P AR TS LIST ...

  • Daewoo KOR-861H0A - page 34

    33 NO PART CODE PART NAME DESCRIPTION Q'TY A00 3511710300 DOOR AS KOR-63150S 1 3511714400 DOOR AS KOR-631H9A 1 3516721410 CONTROL-PANEL AS KOR-631G0A 1 B00 3516721420 CONTROL-PANEL AS KOR-631H0A 1 3516721230 CONTROL-PANEL AS KOR-631H9A 1 F01 3510801310 CABINET PCM T0.36 GE 1 F02 3516004100 SPECIAL SCREW T1 TRS LR4 POLE 4*10 MFZN 3 F03 35161090 ...

  • Daewoo KOR-861H0A - page 35

    34 NO PART CODE PART NAME DESCRIPTION Q'TY 1 F35 3513811720 LOCK POM (LG ¨ › ˙ — )1 F36 3513601500 LAMP BL 125V 25W T25 C5A H187 1 F37 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1 F38 3966820200 MOTOR SYNCRO 120V 2W GM-16-12F17 1 F39 3518905300 THERMOSTAT OFF:75 ON:65 H #187 NB 1 F40 3513003400 HOLDER THERMOSTAT PBT 1 F41 3516003700 SPECI ...

  • Daewoo KOR-861H0A - page 36

    35 NO PART CODE PART NAME DESCRIPTION Q'TY A00 3511710700 DOOR AS KOR-86150S 1 B00 3516721110 CONTROL-PANEL AS KOR-861G0A 1 3516721120 CONTROL-PANEL AS KOR-861H0A 1 F01 3510801400 CABINET PCM T0.6 1 F02 3516004100 SPECIAL SCREW T1 TRS 4*10 SE MFZN 3 F03 3516109200 CAVITY WELD AS CAVITY WELD AS 1 3516109700 CAVITY JOINT AS CAVITY WELD AS 1 F04 ...

  • Daewoo KOR-861H0A - page 37

    36 NO PART CODE PART NAME DESCRIPTION Q'TY F35 3513811700 LOCK POM 1 F36 3513601500 LAMP BL 125V 25W T25 C5A H187 1 F37 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1 F38 3966820200 MOTOR SYNCRO 120V 2W GM-16-12F17 1 F39 3518905300 THERMOSTAT OFF:75 ON:65 H#187 NB 1 F40 3513003400 HOLDER THERMOSTAT PBT 1 F41 3516003700 SPECIAL SCREW TT3 TRS 4X8 M ...

  • Daewoo KOR-861H0A - page 38

    S/M NO. : R631G0A00 3 DAEWOO ELECTRONICS CO., L TD. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” PRINTED D A TE: Aug . 200 1 ...

Manufacturer Daewoo Category Microwave Oven

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