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Summary of Contents for Daewoo KOR-630A0S
- Page 1 S/M No. : R630A0S002 Service Manual Microwave Oven Model: KOR-630A0S KOR-860A0S KOR-860A0N DAEWOO ELECTRONICS CO., LTD.
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Page 2: Table Of Contents
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) D o not operate or allow the oven to be operated with the door open. (b) M ake the follow ing safety checks on all ovens to be serviced before activating the m agnetron or other m icrow ave source, and m ake repairs as necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and sealing surfaces (arcing, wear, and other dam age), (4) D am age 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 KOR-630A M O D E L K O R -630A 0S P O W E R S U P P LY 230V, 50Hz, S IN G LE P HA S E W IT H EA RT H IN G M IC RO W AVE 1200W P O W E R C O N SU M PT IO N... -
Page 5: External View
EXTERNAL VIEW 1. OUTER DIMENSION KOR-630A KOR-860A... -
Page 6: Feature Diagram
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, magnetron tube will immediately stop operating. -
Page 7: Control Panel
EXTERNAL VIEW 3. CONTROL PANEL 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. -
Page 8: Installation
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. -
Page 9: Operations And Functions
OPERATIONS AND FUNCTIONS 1. Connect the m ain 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 m ust always be in place during cooking. 3. -
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 safety 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 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 cavity. (3) Reverse the above for assembly.
- Page 12 DISASSEMBLY AND ASSEMBLY KOR-860A REF. NO PART CO DE PAR T NAME DESCRIPTION Q’TY REMA RK 3512204110 FR A M E D O O R A BS X R -401 H -2938 3517003150 BA R R IER -S C RE E N *O A CR YL T 1.5 3515304410 SU P P O R TE R B AR R -S *O...
- Page 13 DISASSEMBLY AND ASSEMBLY 5. To remove control panel pats. C O N TR OL PAN E L A S S E M B LY : P K C P S W ZE 00(K O R -630A ) : P K C P S W N E 00(K O R -860A ) KOR-630A REF.NO PART CO DE...
- Page 14 DISASSEMBLY AND ASSEMBLY 1) Remove the screw which secure the control panel, push up two snap fits and draw forward the control panel assem bly. 2) Rem ove the door open lever from the control panel. 3) Rem ove four screws which secure the PCB assem bly to control panel. 4) Disconnect m em brane tail from the conector of the PCB assem bly.
- Page 15 DISASSEMBLY AND ASSEMBLY 7. To remove magnetron. 1) Remove a screw which secure the magnetron. 2) Remove the magnetron. 3) Reverse the above steps for reassembly. NOTE N ever install the m agnetron w ithout the m etallic gasket plate w hich is packed w ith each m agnetron to prevent m icrow ave leakage.
- Page 16 DISASSEMBLY AND ASSEMBLY 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.
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Page 17: 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. 1. -
Page 18: Trouble Shooting Guide
TROUBLE SHOOTING GUIDE Following the procedure below to check if the oven is defective or not 1. Check grounding before checking trouble. 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 then check continuity with the AC plug removed. - Page 19 TROUBLE SHOOTING GUIDE CON DITION CHECK RESULT CAUSE REM EDY R eplace C heck con tinuity of D efective O utlet has m agn etron C ontinuity m agn etron proper voltage Fuse does not blow. R eplace D efective C heck con tinuity of noise C ontinuity noise filter board...
- Page 20 TROUBLE SHOOTING GUIDE (TROUBLE 3) N o m icrowave oscillation even though fan m otor rotates. C O N DITIO N C H EC K R E SU LT C A US E R E M ED Y N o m icrow ave C heck co ntinu ity of h igh C on tinuity osc illation...
- Page 21 TROUBLE SHOOTING GUIDE ( TROUBLE 4 ) The follow ing visual conditions indicate a probable defective touch control circuit or m embrance sw itch assem bly. 1. Incomplete segments, 1) Segments missing. 2) Partical segments missing. 3) Digit fickering other than normal fluorescent slight flickering. 4) “...
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Page 22: 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. PR O CED U R E 1. -
Page 23: Microwave Radiation Test
MEASUREMENT AND TEST 2. MICROWAVE RADIATION TEST WARNING M ake sure to check the m icrowave leakage before and after repair of adjustm ent. A lways start m easuring of an unknow n field to assure safety for operating personnel from m icrow ave energy. D o not place your hands into any suspected m icrow ave radiation field unless the safe density level is know n. -
Page 24: Component Test Procedure
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 touching any oven components or wiring, always unplug the oven from its power source and discharge the capacitor. 1. -
Page 25: Wiring Diagram
WIRING DIAGRAM... -
Page 26: Printed Circuit Board
PRINTED CIRCUIT BOARD 1. CIRCUIT CHECK PROCEDURE 1) Low voltage transformer check The low voltage transform er is located on the P.C.B. M easuring condition: Input voltage: 220~230 V / Frequency: 50Hz Term inal Voltage LO AD N O LO A D 4 - 7 A C 12.6 V A C 14.7 V... - Page 27 PRINTED CIRCUIT BOARD 3) W hen there is no microwave oscillation (1) W hen touching START pad, oven lam p does not turn on. Fan m otor do not rotate, but cook indicator in display com es on. Cause : RELAY 2 does not operate. refer to Circuit Diagram ( Point 3 ) - Check m ethod P OINT...
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Page 28: Pcb Circuit Diagram
PRINTED CIRCUIT BOARD 2. PCB CIRCUIT DIAGRAM... -
Page 29: Location No
PRINTED CIRCUIT BOARD 3. P.C.B. LOCATION NO. NAM E SYM BOL SP ECIFIC ATION PART CODE Q 'TY B UZ Z E R B Z1 B M -20K 3515600100 C AR R AY CA 1 7P(6) 102 M 50V CN 6X B-102M C APAC ITO R ELE C E C1 16V R S S 100uF... -
Page 30: Exploded View And Parts List
EXPLODED VIEW AND PARTS LIST 1. DOOR ASSEMBLY Refer to Disassem bly and assem bly. 2. CONTROL PANEL ASSEMBLY Refer to Disassem bly and assem bly. 3. TOTAL ASSEMBLY... - Page 31 EXPLODED VIEW AND PARTS LIST KOR-630A0S REF NO. PART CODE PART NAME DESCRIPTION SUPPLY REMARK DOOR AS Refer to disassem bly and assembly CONTROL-PANEL AS Refer to disassem bly and assembly 3510801310 CABINET PCM T0.6 GE 7112401011 SCREW TAPPING T1 TRS 4X10 MFZN...
- Page 32 EXPLODED VIEW AND PARTS LIST KOR-860A0S / KOR-860A0N REF NO. PART CODE PART NAME DESCRIPTION SUPPLY REM ARK DOOR AS Refer to disassembly and assem bly CONTROL-PANEL AS Refer to disassembly and assem bly 3510801400 CABINET PCM T0.6 7112401011 SCREW TAPPING T1 TRS 4X10 M FZN 3516109200 CAVITY W ELD AS...
- Page 33 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 : G7F00E@web.dwe.co.kr FAX : 02) 360-8184 TEL: 02) 360-8188~8180 PRINTED DATE : JUN. 1999...