Daewoo KOG-131A9A11 manual

Ser vice Manual Micr owave Oven Model: KOG-131A9A1 1 DAEWOO ELECTRONICS CO RP . S/M No. : G131A9A11001 http : //svc.dwe .co .kr No v . 2002 ✔ 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 S[...]

2 PRECA UTIONS T O BE OBSER VED BEFORE AND DURING SER VICING T O A V OID POSSIBLE EXPOSURE T O EXCESSIVE MICR O W 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 microwave source, and make repairs if necessar[...]

SAFETY AND PRECA UTIONS CAUTION : This Device is to be Serviced Only by Properly Qualified Service Personnel. Consult the Service Manual for Proper Service Procedures to Assure Continued Safety Operation and for Precautions to be Taken to Avoid Possible Exposure to Excessive Microwave Energy. 1. FOR SAFE OPERATION Damage that allows the microwave e[...]

4 SPECIFICA TIONS MODEL KOG-131A9A11 POWER SUPPLY 120V~60H Z , SINGLE PHASE WITH EARTHING POWER MICROWAVE 1350W CONSUMPTION GRILL 1150W MICROWAVE ENERGY OUTPUT 1000W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 563X318X418mm (22.1X12.5X16.5 in.) CAVITY DIMENSIONS (W X H X D) 380X246X386mm (14.9X9.7X15.2 in.) NET WEIGHT APPROX. 17.5kg [...]

5 EXTERNAL VIEW 563 418 318 1. OUTER DIMENSION[...]

1w e 5 6 r 23 94 8 0 7 q 6 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. 3. DOOR SCREEN Allows viewing of food. Microwave cannot pass th[...]

7 M/W Dish W ar mer Pasta Bev erage LESS MORE Stop/Clear F rozen Pizza Grill Defrost Fish P oultr y Auto Defrost Meat Au to Cook 1. Bread 2. Soup 3. Baked P otato 4. Fresh V egetable 5. Frozen V egetable M/W Defrost Grill Timer/ lb Start/Speedy cook Kitchen Timer Clock 123 0 2 4 9 3 5 q e 6 8 r 7 w 1 0 456 789 1. Time set pad - Used to set the cook[...]

8 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 oven failure. 3. Away from Radio and TV set[...]

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 on. 5. The oven door can be opened at an[...]

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 [...]

11 1. T o remove cabinet 1) Remove three screws on cabinet back. 2) Push the cabinet backward. 2. T o remove door assemb l y 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 alignmen[...]

12 3. T o remove door parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY A01 3512204500 FRAME DOOR ABS XR-401, SR-0320M 1 A02 3517006500 BARRIER SCREEN *O PEPT T0.25 1 A03 3515202900 STOPPER HINGE *T AS KOR-121M0A 1 A04 3511713600 DOOR PAINTING AS KOR-131G0A 1 A05 3517006400 BARRIER SCREEN *I PE T0.1 1 A06 3512302200 GASKET DOOR PP 1 A07 3513101[...]

13 4. Method to reduce the gap between the door seal and the oven fr ont surface. (1) To reduce gap located on part ‘ A ’ . • Loosen two 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 hing[...]

14 5. T o remove contr ol panel parts. (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 three screws which secure the PCB assembly to control panel. (4) Disconnect membrane tail from the connector of the PCB assem[...]

15 NOTE : Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave leakage. Whenever repair work is carried out on magnetron, check the microwave leakage. It shall not exceed 4mW/cm 2 for a fully assembled oven with door normally closed. 6. T o remove high v oltage capacitor . 1) Remove [...]

16 9. T o remove wind guide assembl y . 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. 10. T o remove H.V .transformer . 1) Remov[...]

17 11. T o remove insulator Heater assembl y . 1) Remove the HEX NUT (F09). 2) Remove the two HEX NUTS (F43). 3) Remove the insulator Heater assembly (C00). 4) Reverse the above steps for reassembly. 1) Remove the HEX NUTS (C04). 2) Remove the insulater Heater (C01) and Heater (C02). 3) Remove the two screws (C05). 4) Reverse the above steps for re[...]

18 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[...]

19 TR OUBLE SHOO TING 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 tranformer, disconnect one load wire from these part[...]

20 CONDITION CHECK Check continuity of magnetron Defective magnetron RESULT No Continuity CAUSE REMEDY Replace Outlet has proper voltage Fuse does not blow. CONDITION CHECK Check continuity of primary interlock switch Malfunction of primary interlock switch RESULT No Continuity CAUSE REMEDY Adjust or replace Turntable motor and oven lamp do not tur[...]

21 CONDITION CHECK RESULT Check continuity of high voltage capacitor terminals with wires removed Continuity CAUSE Defective high voltage transformer REMEDY Replace No microwave oscillation Check continuity of high voltage rectifier in forward and backward direction with DC megger Continuity in backward direction Defective high voltage rectifier Re[...]

22 (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 d[...]

23 MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICRO W A VE PO WER OUTPUT Microwave output power can be checked by indirectly mmeasuring 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 a[...]

24 2. MICRO W A VE RADIA TION 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 glass beaker with an inside diameter of approx. 95 mm(3.5 in.). 3. Place it at the center of the tray and set [...]

25 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[...]

26 WIRING DIA GRAM[...]

27 PRINTED CIRCUIT BO ARD 1. CIRCUIT CHECK PROCEDURE 1. Low voltage transformer check The low voltage transformer is located on the P.C.B. Measuring condition: Input voltage: 120V / Frequency: 60Hz 2. Voltage Check - Key check point - Check method NOTE 1. Refer to Ciruit Diagram (point 4). 2. Secondary side voltage of the low voltage transformer ch[...]

28 MP1 MP2 Mesure point[...]

29 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. ✻ 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 in[...]

30 2. P .C.B. CIRCUIT DIA GRAM[...]

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 50V RS 1µF CEXE1H109A 1 4 CPAPCITOR ELEC EC2 25V RSS 1000µF CEXF1E102V 1 5 CONNECTOR WAFER CN1 YW396-02AV 3519150520 1 6 CONNECTOR WAFFR CN2 YW396-05AV 3519150510 1 7 CONNECTOR WAFER CN3 FCZ254-11 441[...]

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

33 REF NO PART CODE PART NAME DESCRIPTION Q'TY A00 3511713500 DOOR AS KOR-131G0A 1 B00 3516726150 CONTROL PANEL AS KOG-131A9A11 1 C00 3513302410 INSULATOR HEATER AS KOG-211M0A 1 F01 3510806600 CABINET AS SECC T0.6 1 F02 3516004100 SPECIAL SCREW T1 TRS LR4 POLE 4X10 SE MFZN 3 F03 3516112900 CAVITY AS KOG-131A0S 1 F04 7122401211 SCREW TAPPING T2[...]

34 REF NO PART CODE PART NAME DESCRIPTION Q'TY F34 3513601500 LAMP BL 125V 25W T25 C5A H187 1 F35 7121400611 SCREW TAPPING T2S PAN 4X6 MFZN 1 F36 3966820200 MOTOR SYNCRO 120V 2W GM-16-12F17 1 F37 3518905300 THERMOSTAT OFF:75 ON:65 H#187 NB 1 F38 3513003410 HOLDER THERMOSTAT PP 1 F39 7272400811 SPECIAL TAPTITE TT3 TRS 4X8 MFZN 2 F40 3511405100 [...]

S/M NO . : G131A9A11001 D AE W OO ELECT R ONICS C O RP . 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” PRINTED D A TE: Nov , 2002[...]