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Daewoo KOR-6Q2B5S - page 1
Ser vice Manual Micr owave Oven Model: KOR-6Q2B5S DAEWOO ELECTRONICS CORP . S/M No. : R6Q2B5S001 http : //svc.dwe.co.kr Jul. 2004 ✔ 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 In ...
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Daewoo KOR-6Q2B5S - 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: ( ...
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Daewoo KOR-6Q2B5S - 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 ...
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Daewoo KOR-6Q2B5S - page 4
3 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 k ...
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Daewoo KOR-6Q2B5S - page 5
4 EXTERNAL VIEW 1. OUTER DIMENSION ...
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Daewoo KOR-6Q2B5S - page 6
5 1 1 DOOR SEAL - Door seal maintains the microwave within the oven cavity and prevents microwave leakage. 2 2 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. 3 3 DOOR SCREEN - Allows viewing of food. Microwave cannot pass through perf ...
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Daewoo KOR-6Q2B5S - page 7
6 1 8 4 0 q 2 9 3 6 5 7 1 1 Display - Cooking time, power level, indicators and the present time are displayed. 2 2 Power - Used to set power level. 3 3 Defrost - Used to defrost foods for time. 4 4 Clock - Used to set clock. 5 5 Up - Used to add time to cooking. 6 6 Down - Used to decrease time from cooking. 7 7 Auto Cook - Used to cook or reheat ...
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Daewoo KOR-6Q2B5S - page 8
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, cause failure. 3. Away from radio, and TV sets Po ...
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Daewoo KOR-6Q2B5S - page 9
8 Make sure the oven is properly installed and plugged into the electrical. 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 ove ...
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Daewoo KOR-6Q2B5S - page 10
9 DISASSEMBL Y AND ASSEMBL Y 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 obse ...
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Daewoo KOR-6Q2B5S - page 11
10 1. T o remove cabinet 1) Remove three screws on cabinet back. 2) Pull the cabinet backward. 2. T o 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 w ...
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Daewoo KOR-6Q2B5S - page 12
11 3. T o 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 AS KOR-6C0B5S 1 A05 3517002800 BARRIER-SCREEN *I T0.1 1 A06 3512300210 GASKET DOOR PP 1 A07 3513100730 HOOK POM ...
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Daewoo KOR-6Q2B5S - 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 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 pus ...
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Daewoo KOR-6Q2B5S - page 14
13 5. T o 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 T2S TRS 4X12 MFZN 4 (1) Remove the screw which secure the control panel, push up two snap fits and draw forward th ...
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Daewoo KOR-6Q2B5S - page 15
14 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 ...
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Daewoo KOR-6Q2B5S - page 16
15 8. T o 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) Rev ...
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Daewoo KOR-6Q2B5S - page 17
16 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 ...
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Daewoo KOR-6Q2B5S - page 18
17 (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. 4. When checking the continuity of the switches, f ...
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Daewoo KOR-6Q2B5S - page 19
18 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 do not turn on Check continuity of secondary interlock switch Malfunction of sec- ondary interlock switch No Continuity Adjust or replace Check D.C. voltage be ...
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Daewoo KOR-6Q2B5S - page 20
19 (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 fuse Replace high voltage fuse Continuity Check continuit ...
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Daewoo KOR-6Q2B5S - page 21
20 (TROUBLE 4) The following visual conditions indicate a probable defective touch control circuit or membrane switch assembly. 1 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. 1 2. A distinct change in the display a ...
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Daewoo KOR-6Q2B5S - page 22
21 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 ...
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Daewoo KOR-6Q2B5S - page 23
22 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 ...
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Daewoo KOR-6Q2B5S - page 24
23 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 ...
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Daewoo KOR-6Q2B5S - page 25
24 WIRING DIAGRAM ...
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Daewoo KOR-6Q2B5S - page 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 : 230V/Frequency : 50Hz 2. V oltage check Key check point Check method PRINTED CIRCUIT BOARD NO CHECK POINT REMARK 1 IC 1 PIN 5 5 VDC 2 IC 1 PIN 8 3 IC 1 PIN 35 OR PIN 36 NOTE : Each measure point must ...
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Daewoo KOR-6Q2B5S - page 27
26 Measure Point MP1 MP1 GND ...
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Daewoo KOR-6Q2B5S - page 28
3. When there is no microwave oscillation 1) When touching START pad, oven lamp does not turn on. Fan motor does not rotate, but cook indicator in display comes on. - Check method 2) When touching START pad, oven lamp turns on. Fan motor and turntable rotate and cook indicator in display comes on. - Check method 4. When the door is opened during op ...
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Daewoo KOR-6Q2B5S - page 29
28 2. PCB CIRCUIT DIAGRAM ...
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Daewoo KOR-6Q2B5S - page 30
29 NO NAME SYMBOL SPECIFICATION PART CODE Q ’ TY 1 BUZZER BZ1 BM-20K 3515600100 1 2 C ARRAY CA1 7P(6) 1000PF M 50V CN6XB-102M 1 3 CAPACITOR ELEC EC1 50V RS 10UF CEXE1H100A 1 4 CAPACITOR ELEC EC2 25V RSS 1000MF CEXF1E102V 1 5 CONNECTOR WAFER CN1 YW396-02V 3519150520 1 6 CONNECTOR WAFER CN2 FCZ 254-11 441M367160 1 7 CONNECTOR WAFER CN3 YW396-05AV 3 ...
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Daewoo KOR-6Q2B5S - page 31
30 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 ...
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Daewoo KOR-6Q2B5S - page 32
31 ✔ 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). NO PART CODE PART NAME DESCRIPTION Q'TY A00 351179430 DOOR AS KOR-6C2B5S 1 B00 PK ...
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Daewoo KOR-6Q2B5S - page 33
S/M NO. : R6Q2B5S001 DAEWOO ELECTRONICS CORP . 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” PRINTED DA TE: Jul. 2004 ...
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