Daewoo KOR-631G0P Service Manual

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[Page 1] Daewoo KOR-631G0P

Service Manual Microwave Oven Model: KOR-631G0P KOR-631H0P KOR-861G0P KOR-861H0P DAEWOO ELECTRONICS CO., LTD. S/M No. : R631G0P001 ✔ Caution : In this Manual, some parts can be changed for improving, their performance without notice in the part...

[Page 2] Daewoo KOR-631G0P

SAFETY AND PRECAUTIONS........................................................................................................... 2 1. FOR SAFE OPERATION ...................................................................................................

[Page 3] Daewoo KOR-631G0P

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, O...

[Page 4] Daewoo KOR-631G0P

SPECIFICATIONS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. MODEL KOR-631G/H KOR-861G/H POWER SUPPLY 220V-60Hz, SINGLE PHASE WITH EARTHING POWER CONSUMPTION MICROWAVE 1200W 1300W GRILL COMBINATION MICROWAVE ENERGY OUTPUT 800W 900W MICROWAVE...

[Page 5] Daewoo KOR-631G0P

EXTERNAL VIEW 1. OUTER DIMENSION (KOR-631/861) 465/495 279/294 360/388 Fig.2 Side View Fig.1 Front View ...

[Page 6] Daewoo KOR-631G0P

EXTERNAL VIEW 2. FEATURE DIAGRAM 1. DOOR SEAL Door seal maintains the microwave within the oven cavity and prevents microwave leakage. 2. DOOR HOOK When door is closed, it will automatically lock shut. If door is opened while oven is operating, mag...

[Page 7] Daewoo KOR-631G0P

EXTERNAL VIEW 3. CONTROL PANEL (1) KOR-631G/861G 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...

[Page 8] Daewoo KOR-631G0P

EXTERNAL VIEW (2) KOR-631H/861H 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 fo...

[Page 9] Daewoo KOR-631G0P

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 behind and side All air vents should be kept a clearance. If all vents are cov...

[Page 10] Daewoo KOR-631G0P

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...

[Page 11] Daewoo KOR-631G0P

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 safety during normal operation. However, carelessness in servicing the o...

[Page 12] Daewoo KOR-631G0P

DISASSEMBLY AND ASSEMBLY 1. To remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. . 2. To remove door assembly 1) Remove a screw which secure the stopper hinge top. 2) Remove the door assembly from top plate of cavit...

[Page 13] Daewoo KOR-631G0P

DISASSEMBLY AND ASSEMBLY 3. To remove door parts. (1) KOR-631G/631H (2) KOR-861G/861H REF. NO PART CODE PART NAME DESCRIPTION QTY REMARK A01 3512203800 FRAME DOOR ABS XR-401 H-2938 1 A02 3517003050 BARRIER-SCREEN*O ACRYL 1 A03 3515304610 SUPPORTER B...

[Page 14] Daewoo KOR-631G0P

DISASSEMBLY AND ASSEMBLY 1) Remove the gasket door from door weld as. 2) Remove the barrier screen inner from door weld as. 3) Remove the door frame from door weld as. 4) Remove the stopper hinge top from door weld as. 5) Remove the spring and the ho...

[Page 15] Daewoo KOR-631G0P

5. To remove control panel parts. (1) KOR-631G/631H (2) KOR-861G/861H REF.NO PART CODE PART NAME DESCRIPTION QTY REMARK B01 3518520900 SWITCH MEMBRANE KOR-631 G 0 S 1 3518520910 KOR-631H0S B02 3516719000 CONTROL-PANEL ABS XR-401 H-2938 1 B03 PKMPMSZA...

[Page 16] Daewoo KOR-631G0P

DISASSEMBLY AND ASSEMBLY 1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assembly. 2) Remove the door open lever from the control panel. 3) Remove four screws which secure the PCB assembly ...

[Page 17] Daewoo KOR-631G0P

DISASSEMBLY AND ASSEMBLY 8. To 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....

[Page 18] Daewoo KOR-631G0P

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 t...

[Page 19] Daewoo KOR-631G0P

TROUBLE SHOOTING GUIDE Following the procedure below to check if the oven is defective or not. 1) Check earthing before trouble checking. 2) Be careful of the high voltage circuit. 3) Discharge the high voltage capacitor. 4) When checking the contin...

[Page 20] Daewoo KOR-631G0P

TROUBLE SHOOTING GUIDE ( TROUBLE 2 ) Display shows all figures selected, but oven does not start cooking, even though desired program and time are set and start pad is tapped. CONDITION CHECK RESULT CAUSE REMEDY Outlet has proper voltage Fuse does ...

[Page 21] Daewoo KOR-631G0P

TROUBLE SHOOTING GUIDE ( TROUBLE 3 ) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT Continuity Continuity in backward direction 0 Ω or No Continuity No Continuity 0 V Approx 15 VDC CAUSE Defective high voltage ...

[Page 22] Daewoo KOR-631G0P

TROUBLE SHOOTING GUIDE ( 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 othe...

[Page 23] Daewoo KOR-631G0P

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 pow...

[Page 24] Daewoo KOR-631G0P

MEASUREMENT AND TEST 2. MICROWAVE RADIATION 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 ...

[Page 25] Daewoo KOR-631G0P

MEASUREMENT AND 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 ...

[Page 26] Daewoo KOR-631G0P

WIRING DIAGRAM ...

[Page 27] Daewoo KOR-631G0P

PRINTED CIRCUIT BOARD 1. CIRCUIT CHECK PROCEDURE 1. Low voltage transformer check The low voltage transformer is located on the P.C.B. Measuring condition: Input voltage: 220 V / Frequency: 60Hz 2. Voltage Check - Key check point - Check method Te...

[Page 28] Daewoo KOR-631G0P

PRINTED CIRCUIT BOARD MP1 MP2 Measure Point ...

[Page 29] Daewoo KOR-631G0P

PRINTED CIRCUIT BOARD 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...

[Page 30] Daewoo KOR-631G0P

PRINTED CIRCUIT BOARD 2. P.C.B. CIRCUIT DIAGRAM ...

[Page 31] Daewoo KOR-631G0P

PRINTED CIRCUIT BOARD 3. P.C.B. LOCATION NO (1) KOR-631G/631H 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 EL...

[Page 32] Daewoo KOR-631G0P

(2) KOR-861G/861H 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 CEXF1E102V 1 5 CONNECTO...

[Page 33] Daewoo KOR-631G0P

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 34] Daewoo KOR-631G0P

EXPLODED VIEW AND PARTS LIST (1) KOR-631G/631H REF NO PART CODE PART NAME DESCRIPTION Q'TY A00 DOOR AS Refer to disassembly and assembly 1 B00 CONTROL PANEL AS 1 F01 3510801310 CABINET PCM T0.6 GE 1 F02 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN ...

[Page 35] Daewoo KOR-631G0P

(2) KOR-861G/861H REF NO PART CODE PART NAME DESCRIPTION Q'TY A00 DOOR AS Refer to Disassembly and assembly. 1 B00 CONTROL PANEL AS 1 F01 3510801400 CABINET PCM T0.6 1 F02 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN 3 F03 3516109200 CAVITY WELD A...

[Page 36] Daewoo KOR-631G0P

DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “DAEWOOELEC” E-mail : [email protected] FAX : 02) 360-8184 TEL: 02) 360-8179~8180 PRINTED DATE : NOV. 1998 ...