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Service Manual

Microwave Oven

Model: 

KOC-9Q4T

S/M No. : 

Mar. 2010

✔

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).

Содержание KOC-9Q4T

Страница 1: ...Mar 2010 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 L...

Страница 2: ...CTIONS 10 LEVELS CAVITY VOLUME 0 99 Cu Ft SPECIFICATION ARE SUBJECT TO CHANGE WITHOUT NOTICE MODEL KOC 9Q4T POWER SUPPLY 230V 50Hz SINGLE PHASE WITH EARTHING MICROWAVE 1400W POWER GRILL 1250W CONSUMPT...

Страница 3: ...4 3 EXTERNAL VIEW 382 513 311 1 OUTER DIMENSION 1 KOC 9Q3T7S 383 513 311 2 KOC 9Q4T...

Страница 4: ...through the screen 14 TOP HEATER Top heater turns on if any of heater related mode operates 15 OVEN FRONT PLATE 16 CONVECTION INLET 17 OVEN LAMP Oven lamp turns on anytime the door opens and oven oper...

Страница 5: ...STEAM CLEANING mode gram When blinking the oven is operating in weight input mode 2 2 Auto cook Used to cook or reheat 3 3 Defrost Used to defrost foods 4 4 MW Used to set power level of the microwav...

Страница 6: ...of the terminals and power cord before check the parts listed below CONDITION CHECK Check continuity of interlock monitor switch with door closed COM NC Check continuity of both primary and secondary...

Страница 7: ...just for adjustment instructions TROUBLE 2 Display shows all figures selected but oven does not start cooking even though desired program and time are set and start button is tapped CONDITION CHECK Ch...

Страница 8: ...ds to magnetron terminal and magnetron body Continuity Defective magnetron 2 1 Check resistance of primary and secondary coil of high voltage transformer 0 or Defective high voltage transformer Replac...

Страница 9: ...eck continuity of heater Defective heater No continuity Replace TROUBLE 5 1 Convection heater is not heated food will not become hot 2 Convection fan motor does no rotate CONDITION CHECK Check continu...

Страница 10: ...y should be 4 Display does not count down or up with time cooking or clock operation 5 Oven is programmable and cooks normally but no display shows 6 Display obviously jumps in time while counting dow...

Страница 11: ...or the water temperature to attain 20 C 2 C is measured The oven is then switched off and the final water temperature is measured within 60s NOTE 1 The water stirred is before its temperature is measu...

Страница 12: ...binet door seem door viewing screen the exhaust air vents and the suction air vents 3 Measuring should be in a counter clockwise direction at a rate of 1 in sec If the leakage of the cabinet door seem...

Страница 13: ...ter set on the highest resistance scale measure the resistance across the diode terminals Reverse the meter leads and again observe the resistance reading Meter with 6V 9V or higher voltage batteries...

Страница 14: ...31 10 WIRING DIAGRAM...

Страница 15: ...6 Disassembly and assembly 3 TOTAL ASSEMBLY 2 KOC 9Q4T H35 H37 H05 H02 H56 H57 H55 H07 H13 H15 H16 H14 H16 H27 H21 H20 H24 H33 H26 H22 H23 H08 H39 H43 H31 H46 H49 H50 H45 H53 H41 H03 H38 H09 H52 H51...

Страница 16: ...200G 1 H16 4415A66910 SW MICRO VP 531A OF SZM V16 FA 61 2 H17 3518907020 THERMOSTAT OFF 120 ON 60 H 187 NB 1 H18 3513003410 HOLDER THERMOSTAT PP BK 1 H19 7122401211 SCREW TAPPING T2S TRS 4X12 MFZN 2 H...

Страница 17: ...6003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 3 H45 3512807530 HEATER T AS KOC 9Q0T7S 1 H46 3512525510 GUIDE AIR AS KOC 9Q0T7S 1 H47 7112401011 SCREW TAPPING T1 TRS 4 10 MFZN 2 H48 7113400810 SCREW TAPPI...

Страница 18: ...rtion to fluctuation of power source voltage 2 The allowable tolerance of the secondary voltage is within 5 of nominal voltage NOTE Each measure point must be measured with GND points Terminal 7 8 9 V...

Страница 19: ...39 MEASUREPOINT MP1 MP2...

Страница 20: ...n oven lamp turns on and fan motor does not rotate but cook indicator in display comes on Cause RELAY 2 does not operate Check method Check method STATE RELAY 1 ON RELAY 1 OFF POINT A 5V DC GND POINT...

Страница 21: ...TATE RELAY 3 ON RELAY 3 OFF POINT A 5V DC GND POINT B GND 12V DC RY3 GRILL D7 Q8 R16 Q7 24 P11 B A 5 Case of no heating of top heater sub When touching GRILL or COMBI or CONVECTION button oven lamp tu...

Страница 22: ...timer does not stop POINT STATE DOOR OPEN DOOR CLOSED A OPEN CLOSE B 5V DC GND CN1 YW396 02V D O M SW 1 2 V2 R9 R10 47K R11 10K C1 104Z 28 P32 4 7K V1 Q6 A1266Y V1 D6 1N4148 A B CHECK NO METHOD REMED...

Страница 23: ...43 13 P C B CIRCUIT DIAGRAM...

Страница 24: ...R22 24 R27 29 RD AZ103J R CARBON FILM 1 6 10K OHM 5 8 24 R10 30 RD AZ473J R CARBON FILM 1 6 47K OHM 5 2 25 R17 RD AZ105J R CARBON FILM 1 6 1M OHM 5 1 26 R21 RD 4Z510J R CARBON FILM 1 4 51 OHM 5 SMALL...

Страница 25: ...S M NO DAEWOO ELECTRONICS CORP 1 2 Jeo dong 1 il ga Jung gu Seoul Korea C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC PRINTED DATE Mar 2010...

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