Summary of the content on the page No. 1
S/M No. : R6Q2B5S001
Service Manual
Microwave Oven
Model: KOR-6Q2B5S
✔ 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 (http://svc.dwe.co.kr).
DAEWOO ELECTRONICS CORP.
http : //svc.dwe.co.kr Jul. 2004
Summary of the content on the page No. 2
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 lat
Summary of the content on the page No. 3
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. (2) A broken door viewing screen. (3) A broken front panel, oven cavity. (4) A loosened door lock. (5) A broken door lock. The d
Summary of the content on the page No. 4
SPECIFICATIONS MODEL KOR-6Q2B5S POWER SUPPLY 230V-50Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1200W POWER CONSUMPTION GRILL COMBINATION MICROWAVE ENERGY OUTPUT 800W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 465 x 279 x 327 mm (18.3 x 11.0 x 12.9 in) CAVITY DIMENSIONS (W X H X D) 301 x 230 x 283 mm (11.9 x 9.1 x 11.1 in) NET WEIGHT APPROX. 11.3 kg (24.8 Ibs.) TIMER 59 min. 90 sec. FUNCTION SELECTIONS MICROWAVE POWER SELECTIONS 10 LEVELS CAVITY VOLUME 0.7 Cu. Ft. * SPECIFICATIONS
Summary of the content on the page No. 5
EXTERNAL VIEW 1. OUTER DIMENSION 4
Summary of the content on the page No. 6
2. FEATURE DIAGRAM 11 DOOR SEAL - Door seal maintains the microwave within the oven cavity and prevents microwave leakage. 22 DOOR HOOK - When the door is closed, it will automatically lock shut. If door is opened while oven is operating, mag- netron tube will immediately stop operating. 33 DOOR SCREEN - Allows viewing of food. Microwave cannot pass through perforations in screen. 44 SPATTER SHIELD - Protects the microwave outlet from splashes of cooking foods. 55 OVEN LAMP - Automatically turns
Summary of the content on the page No. 7
3. CONTROL PANEL 1 7 5 8 6 3 4 2 9 0 q 11 Display - Cooking time, power level, indicators and the present time are displayed. 22 Power - Used to set power level. 33 Defrost - Used to defrost foods for time. 44 Clock - Used to set clock. 55 Up - Used to add time to cooking. 66 Down - Used to decrease time from cooking. 77 Auto Cook - Used to cook or reheat a lot of favorite foods. 88 One Touch Cook - Used to cook or reheat specific quantities of food. 99 Time Set Pad - Used to set the cooking tim
Summary of the content on the page No. 8
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 covered during operation, the oven may overheat and, eventually, cause failure. 3. Away from radio, and TV sets Poor television reception and radio interference may result if the oven is located close to a TV, radio, antenna, or feeder and so on. Positi
Summary of the content on the page No. 9
OPERATIONS 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 any time during operation by pushing the door release button on the control panel. The oven will automatically shut off. To restart the oven, close the do
Summary of the content on the page No. 10
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 danger from a short circuit. You are asked to observe the following precautions carefully. 1. Always remove the power plug from the outlet before servicing. 2. Use an insulated screwdriver and ware rubbe
Summary of the content on the page No. 11
1. To remove cabinet 1) Remove three screws on cabinet back. 2) Pull the cabinet backward. 2. To remove door assembly 1) Remove the screw 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 with the hinge and cavity front plate. 10
Summary of the content on the page No. 12
✔ Caution : In this Service 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 (http://svc.dwe.co.kr). 3. To remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK A01 3512206440 FRAME DOOR HIPS 1 A02 3517007300 BARRIER-SCREEN*0 PET T0.125 1 A03 3515204100 STOPPER SINGE *T AS KOR-63150S 1 A04 3511719500 DOOR PAINTING
Summary of the content on the page No. 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 the screw on stopper hinge top, and then push the door to contact the door seal to oven front surface. Tighten a screw. (2) To reduce gap located on part ‘B’ Loosen two screws on stopper hinge under, and then push the door to contact the door seal to oven front surface. Tighten two screws. 2 NOTE : A small gap may be acceptable if the microwave leakage does not exceed 4mW/cm
Summary of the content on the page No. 14
✔ Caution : In this Service 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 (http://svc.dwe.co.kr). 5. To remove control panel parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK B01 3518524120 SWITCH MEMBRANE KOR-6C2B5S 1 B02 3516730720 CONTROL PANEL HIPS 1 B03 PKMPMSBA00 PCB AS 6N(800W,S) 1 B04 7122401211 SCREW TAPPING T2
Summary of the content on the page No. 15
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. To remove magnetron. 1) Remove a screw which secure the magnetron. 2) Remove the magnetron. 3) Reverse the above steps for reassembly. NOTE : Never install the magnetron without the metallic gasket plate which is packed with each m
Summary of the content on the page No. 16
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. 6) Remove two screws which secure the motor shaded pole. 7) Remove the motor shaded pole. 8) Reverse the above steps for reassembly. 9. To remove H.V.transformer. 1) Remove four screws holding the H.V.transformer. 2) Remove the H.V.transformer. 3) Rev
Summary of the content on the page No. 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 oven door. If the door is not closed properly, the oven will not operate. When the door is closed, the hook pushes the button of the microswitch. Then th
Summary of the content on the page No. 18
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. 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. To do otherwise may result in a false reading or damage to your meter. NOTE : When electric parts are ch
Summary of the content on the page No. 19
CONDITION CHECK RESULT CAUSE REMEDY Replace No Defective mag- Outlet has Check continuity of magnetron Continuity netron proper volt- age Fuse does not Replace No Defective mag- blow. Check continuity of Continuity netron noise filter board Replace No Check continuity of Open power sup- Continuity power supply cord ply cord Replace Normal Defective touch control circuit NOTE All these switches must be replaced at the same time, please refer to Interlock Mechanism And Adjustment . (TROUBLE 2) Dis
Summary of the content on the page No. 20
(TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT CAUSE REMEDY No Continuity microwave Check continuity of high oscillation voltage fuse Replace high voltage fuse Continuity Replace Check continuity of high Defective high voltage capacitor terminals voltage trans- with wires removed former Continuity in Replace Check continuity of high voltage Defective high backward rectifier in forward and backward voltage rectifier direction direction with DC megge
