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12

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.

2. When the timer is set to the time desired.

• The contact of the timer switch close.
• Oven lamp turn on.
• 230V AC is applied to the high voltage transformer.
• Turntable motor start rotating and glass tray rotating.
• Fan motor rotating and cools the magnetron by blowing air.
• Timer motor operating and point to passing cooking time.
• 3.3 Volts AC is generated from the filamente winding of the high voltage transformer. This filament voltage is

applied to the magnetron to heat the magnetron filament through two noise preventing choke coils.

• A high voltage of 2000 Volts AC is generated in the secondary of high voltae 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 magnetron. As shown in Fig. 2 the first half cycle of the high
voltage produces in the high voltage transformer secondary charges the high voltage capacitor. Current flow is
in the direction of the dotted-line during the second half cycle, the voltage produced by the transformer
secondary, and the charge of the high voltage capacitor are combined and applied to the magnetron as shown
by the solid line so that oscillations begins.
The disturbance wave generated by the magnetron is prevented by the choke coils of 1.5µH, filter capacitors of
500pF and the magnetron’s shielded case so that TV and radio programs are not impired by noise.

TM

TM

CL

GM

FM

CL

GM

FM

12A Fuse

Primary
Interlock
Switch

Timer
Switch

COM

NC

NO

Interlock
Monitor
Switch

Secondary
Interlock
Switch

Timer Motor

Cavity Lamp

Geared Motor

Fan Motor

Fig. 1

15A Fuse

Содержание KOG-36052S

Страница 1: ...Service Manual Microwave Oven Model KOG 36052S KOG 36152S KOG 36252S KOG 36352S KOG 36452S DAEWOO ELECTRONICS CO LTD...

Страница 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...

Страница 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...

Страница 4: ...GRILL 1050 W COMBINATION 2200 W MICROWAVE ENERGY OUTPUT 800 W MICROWAVE FREQUENCY 2450 MHz OUTSIDE DIMENSIONS WXHXD 465X360X274 mm KOG 36050S 36150S CAVITY DIMENSIONS WXHXD 290X290X220mm NET WEIGHT 1...

Страница 5: ...e of special heat resistant 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 fit...

Страница 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...

Страница 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...

Страница 8: ...immediately before the 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 Microw...

Страница 9: ...Place it at the center 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...

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

Страница 11: ...11 WIRING DIAGRAM...

Страница 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...

Страница 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...

Страница 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...

Страница 15: ...nge 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 fixing glu...

Страница 16: ...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 Fig A 1 Loosen a screw on the interlock sw...

Страница 17: ...timer assembly 5 Pull out the timer knob from the timer assembly 6 Pull out the timer coupler from the timer assembly 7 Remove the screw pull out the switch micro 8 Remove the screw which secure the V...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 23: ...nterlock 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...

Страница 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...

Страница 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...

Страница 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...

Страница 27: ...G 3645 3512202500 1 KOG 3605 A2 3512202000 1 KOG 3615 35 3512202010 FRAME DOOR ABS 1 KOG 3625 3512202800 1 KOG 3645 A3 3515201500 STOPPER HINGE T AS KOR 61150S 1 A4 3511705500 DOOR WELD AS KOR 61150S...

Страница 28: ...645 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 TAPPING T2S PAN 3X15 MFZN 1 B10 3517400500 COUPLER VPC K...

Страница 29: ...29 3 Main Unit...

Страница 30: ...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 F26 FAN 3511800300...

Страница 31: ...S001 DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC FAX 02 360 8184 TEL 02 360 8183 http www dwe daewoo co kr PRINTED D...

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