Daewoo KOG-3885, Service Manual

Page 1: ...Service Manual Microwave Oven Model KOG 3885 DAEWOO ELECTRONICS CO LTD...

Page 2: ...avity for proper alignment integrity and connection d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired rep...

Page 3: ...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 door seal area and oven cavity surface be kept clea...

Page 4: ...MICROWAVE GRILL 1050 W COMBINATION 2350 W MICROWAVE ENERGY OUTPUT 900 W MICROWAVE FREQUENCY 2450 MHz OUTSIDE DIMENSIONS WXHXD 495X289X382 mm CAVITY DIMENSIONS WXHXD 320X330X225 mm NET WEIGHT 16 5 Kg T...

Page 5: ...esistant glass Food in a proper receptacle is placed on this tray for cooking Roller Guide This must always be used for cooking together with the glass cooking tray Coupler this fits over the shaft in...

Page 6: ...bout 1 0 meters long Do not use an extension cord If the supply cord is damaged it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard...

Page 7: ...set at any time during the cooking cycle by only turning the timer knob Do not let the timer continue to operate after removing food 7 NOTE When using the GRILL KOG 368 9 OS mode Do not open the door...

Page 8: ...he water is added to the vessel After addition of the water to the vessel the load is immediately placed on the center of the shelf which is in the lowest normal position 4 Microwave power is switched...

Page 9: ...ter of the tray and set it in a cavity D Close the door and operate the oven E Measure the leakage by using microwave energy survery meter with dual ranges set to 2450 MHz Measured radiation leakage m...

Page 10: ...10 WIRING DIAGRAM SLOW ACTING RELAY...

Page 11: ...11 WIRING DIAGRAM...

Page 12: ...tae transformer and this secondary voltage is increased by the action of the diode and the charging of the high voltage capacitor This resultant D C voltage is then applied to the anode of the magnetr...

Page 13: ...o the high voltage transformer to stop microwave oscillation Fan motor timer motor and turntable motor stop rotating Oven lamp turn off As soon as the door is opened monitor switch close NC to create...

Page 14: ...epair work 2 Warning about the electric charge in the high voltage capacitor For about 30 seconds after the operation stopped and electric charge remains in the high voltage capacitor When replacing o...

Page 15: ...stopper hinge top 2 Remove the stopper hinge top and door assembly from top plate of cavity 3 Remove the stopper hinge top from door assembly 4 Reverse the above for reassembly taking care to replace...

Page 16: ...2 To reduce gap located on part B 1 Loosen three screws on bottom hinge and then the door to contact the door seal to oven front surface 2 Tighten three screws 3 To reduce gap locatated on part C See...

Page 17: ...the timer assembly 4 Remove the timer assembly 5 Pull out the knob from the timer assembly 6 Pull out the timer couple from the timer assembly 7 Remove the screw pull out the switch micro 8 Remove th...

Page 18: ...pacitor 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 three screws which secure the magnet...

Page 19: ...nsformer 2 Remove the transformer 3 Reverse the above steps for reassembly CAUTION Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwav...

Page 20: ...2 3 4 5 6 7 3513301100 3512801700 7002500613 7392500008 7002400413 3515000700 7S627W50X1 1 1 1 1 2 2 2 SPP T0 8 230V 1000W TRS 5X6 MFCR 6N 2 5 SUS TRS 4X4 MFCR C3771BD FLG NUT M5X0 8P MFZN INSULATOR H...

Page 21: ...d 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 micro switch Then the button of the primary interl...

Page 22: ...he two mounting screws b Adjust interlock switch assembly position c Confirm the gap 1 2mm described above d Make sure that push lever moves smoothly after adjustments is completed e Completely tighte...

Page 23: ...erlock switch secondary interlock switch and interlock monitor switch All these switches must be replace at the same time Replace H V T Thermal cut out Outlet has Proper voltage Check continuity of H...

Page 24: ...he contacts of a relay operate oven Normal reading should be approx 0 Meter with 6V or higher voltage batteries should be used to check the normal direction resistance of the diode NO GOOD Poor contin...

Page 25: ...readings should be as follows Secondary winding Approx 120 10 Filament winding Approx 0 Primary winding Approx 0 2 High voltage capacitor A Check continuity of capacitor with meter on the highest OHM...

Page 26: ...e ohmmeter Fig a Condition 1 Door is opened 2 Common terminal of the monitor switch disconnected 3 In case of secondary interlock switch Lamp on or zero resistance ohmmeter Fig c Condition 1 Door is c...

Page 27: ...S ACRYL T1 5 PP KOR 61150S KOR 81250S POLYESTER T0 1 PP POM PWI A01 A02 A03 A04 A05 A06 A07 A08 A09 1 Door Assembly DOOR AS 3511708720 REF NO 3512202230 3517003150 3515304410 3515201500 3511706520 351...

Page 28: ...KOG 3885 B5 LEVER DOOR OPEN POM 1 3513701400 KOG 3885 B6 4415A66910 SW MICRO VP 531A OF 1 B7 7121301511 SCREW TAPPING T2S PAN 3X15 MFZN 1 B8 4415A17352 SW MICRO VP 533A OF 1 B9 7121301511 SCREW TAPPI...

Page 29: ...29 3 Main Unit...

Page 30: ...HEX 4X13 SE MFZN 3 F22 SCREW TAPPING 7S312X40A1 T1 TRS 4X10 SE MFZN 2 F23 SCREW MATCHINE 7601400811 PAN 4X8 PW MFZN 2 F24 COVER B 3511402500 SBHG T0 8 1 F25 MOTOR SHADED POLE 3963512100 MW10CA R01 1 F...