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Service Manual
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 CO., LTD.
Microwave Oven
KOG-3667OS
Power
Timer
1
2
3
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Table of Contents
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Summary of Contents for DAEWOO ELECTRONICS KOG-3667OS
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Page 1: Microwave Oven
: 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). Power Timer DAEWOO ELECTRONICS CO., LTD. -
Page 2: Table Of Contents
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Page 3: Proper Use And Service Precautions
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Page 4: Specifications
SPECIFICATIONS ITEM Specification POWER SUPPLY 230V~50Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1200W POWER CONSUMPTION GRILL 1050W COMBINATION 2200W MICROWAVE ENERGY OUTPUT 800W (IEC705) MICROWAVE FREQUENCY 2450 MHz OUTSIDE DIMENSIONS (W X H X D) 465 X 274 X 377 mm CAVITY DIMENSIONS (W X H X D) 290 X 200 X 290 mm NET WEIGHT... -
Page 5: Features Diagram
FEATURES DIAGRAM Power Timer ¤ Door latch–When the door is closed it will automatically lock shut. If the door is opened while the oven is operating, magnetron will immediately stop operating. ¤Ł Door seal–Door seal maintains the microwave energy within the oven cavity and pre- vents microwave leakage. -
Page 6: Installation
INSTALLATION Steady, flat location This microwave oven should be set on a steady, flat surface. Leave space behind and side All air vents should be kept a clearance. lf all vents are covered during operation, the oven may overheat and, eventually, cause oven failure. Away from Radio and TV sets Poor television reception and radio interference may result if the oven is located close to a TV, Radio, or antenna, feeder and so on. -
Page 7: Operation
OPERATION PROCEDURE Connect the mains lead to an electrical socket- mode. If turning the timer knob for less than 2 outlet. minutes, turn it past 2 minutes and then back to the desired time. After placing the food in a suitable utensil, open the oven door and put it on the glass The oven will be turned off automatically when turntable, Glass turntable must always be in... -
Page 8: Measurement Of The Microwave Output Power
MEASUREMENT OF THE MICROWAVE OUTPUT POWER 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 its maximum microwave power setting with a load of 1,000 ¡... -
Page 9: Microwave Radiation Test
MICROWAVE RADIATION TEST WARNING • Make sure to check the microwave leakage before and after repair or adjustment. • Always, start measuring of an unkbown field to assure safety for operating personnel from microwave energy. • Do not place your hands into any suspected microwave radiation field unless the safe density level in known. -
Page 10: Wiring Diagram
WIRING DIAGRAM Fig. 1 Wiring Diagram... - Page 11 SCHEMATIC DIAGRAM (FOR GERMANY)
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Page 12: Circuit Description
CIRCUIT DESCRIPTION 1. When the food is placed in the oven cavity and door is closed. • The contact of the interlock monitor switch open (NO). • The contacts of the primary interlock switch and secondary interlock switch close. Primary Timer Interlock Switch... - Page 13 HIGH VOLTAGE TRANSFORMER H.V. CAPACITOR H.V. DIODE Fig. 2 3. When the door is opened during cooking. • Primary interlock switch and secondary interlock switch open to cut off the primary voltage to the high voltage transformer to stop microwave oscillation. •...
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Page 14: Precautions For Disassembly And Repair
PRECAUTIONS FOR DISASSEMBLY AND REPAIR – Cautions to be observed when trouble shooting. Unlike many other appliances, the microwave oven is a high-voltage, high-current equipment. It is completely safety during normal operation. However, carelessness in servicing the oven can result in an electeric shock or possible danger from a short circuit. -
Page 15: Disassembly And Assembly
DISASSEMBLY AND ASSEMBLY 1. To remove cabinet. Remove three screws on cabinet back. 2. To remove door assembly. 1) Remove two screws ¤ which secure the stopper hinge top. 2) Remove the stopper hinge top ¤Łand door assembly ¤Øfrom top plate of cavity. 3) Remove the stopper hinge top ¤Ł... - Page 16 (1) Remove the gasket door (A07) from door weld ass’y (A05). (2) Remove the frame (A01) from door weld ass’y (A05). (3) Remove the barrier screen outer (A02) and the supporter barrier screen outer (A03). (4) Remove the hook spring (A09) and the hook (A08). (5) Remove hings stopper top ass’y (A04).
- Page 17 5. To remove control panel parts. (1) Remove the screw which secur the con- trol panel, push up two snap fits and draw forward the control panel assenbly. B04 B07 B08 (2) Remove the screw (B04) pull out the switch micro (B03). (3) Remove the screw (B06) pull out the switch micro (B05).
- Page 18 6. To remove high voltage capacitor. (1) Remove the screw ¤ which secure the grounding ring terminal of the H.V. diode ¤Łand capacitor holder ¤Ø . (2) Remove the H.V. diode ¤Łfrom the capac- itor holder ¤Ø . (3) Reverse the above steps for reassembly. High voltage circuit wiring MAGNETRON H.V.
- Page 19 @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @ ? e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ? @ @ @ @ @ @ @ @...
- Page 20 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) 10. To remove insulator Heater assembly. (1) Remove the four ¤...
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Page 21: Interlock Mechanism
INTERLOCK MECHANISM 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 dan- ger resulting from the leakage of microwave. (1) Primary interlock switch When the door is closed, the hook locks the oven door. - Page 22 Interlock monitor switch Secondary interlock switch Hook Push lever Adjustment 2. Interlock monitor switch When the door is closed, the interlock monitor switch should be opened before other switches close. When the door is opened, the interlock monitor siwtch should be closed after other switches open.
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Page 23: Trouble Shooting Guide
TROUBLE SHOOTING GUIDE Trouble Door shut, timer set but no cooking takes place. Does the fan motor work when you shut the door and turn the timer? Does 15A fuse blow? Replace Check continuity of continuity continuity primary interlock switch, interlock monitor switch secondary interlock switch with door shuted. - Page 24 Does the fan motor when you shut the door and turn the timer? Replace Does the oven lamp light? primary interlock Does the turntable turn? switch, secondary interlock switch NO microwave continuity Check continuity Replace oscillation. of filament of magnetron. magnetron * Do not operate when you check this continuity.
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Page 25: Component Test Procedure
COMPONENT TEST PROCEDURE 1. High voltage is present at the high voltage terminal of the high voltage transforner during any cook- ing cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the capacitor (see page 14). -
Page 26: Safety Interlock Continuity Test
SAFETY INTERLOCK CONTINUITY TEST • Disconnect the oven from the power supply. • You can test continuity of safety interlocks and monitor switch by using switch tester or ohmmeter. • The switch operation is checked by the lamp on/off of resistance zero/unlimited. •... -
Page 27: Exploded And Parts List
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) EXPLODED AND PARTS LIST 1. - Page 28 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) 2. Control Panel Assembly B04 B07 B08 CONTROL-PANEL AS : 3516716020 REF No.
- Page 30 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) REF No. PART NAME PART CODE DESCRIPTION...
- Page 31 BL 240V 25W T25 NOISE-FILTER 3518603700 DWLF-M SCREW TAPPING 7121400811 T2S PAN 4X8 MFZN MOTOR SYNCRO 3966310100 GM-16-24FD12 S/ACTING RELAY 4416W67211 JALA-TM-AC 220V FOR GERMANY 3512710100 KOG-3615OS HARNESS MAIN 3512710110 KOG-3615OS FOR GERMANY CONTROL-PANEL AS 3516716020 KOG-3667OS DOOR AS 3511707920 KOR-616TOS...
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