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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.

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The sequence of check is interlock monitor switch; primary and secondary interlock switches check.

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Make circuits like Fig. a, Fig. b, Fig. c for tests.

SAFETY INTERLOCK CONTINUITY TEST

1) In case of interlock monitor check.

(Lamp on or zero resistance)

(ohmmeter)

– Fig. a –

Condition: 1) Door is opened.

2) Common terminal of the monitor

switch disconnected.

3) In case of secondary interlock switch.

(ohmmeter)

– Fig. c –

Condition : 1) Door is closed.

2) In case of primary interlock check.

(Lamp on or zero resistance)

(ohmmeter)

– Fig. b –

Condition: 1) Door is closed.

ƒN

(Schematic diagram of S/W tester)

POWER
SUPPLY
CORD

PRIMARY
INTERLOCK S/W

COM

INTERLOCK
MONITOR
S/W

SECONDARY
INTERLOCK
S/W

POWER
SUPPLY
CORD

PRIMARY
INTERLOCK S/W

COM

INTERLOCK
MONITOR
S/W

SECONDARY
INTERLOCK
S/W

CONTACT

LEAD

LAMP

S/W

BATTERY

Содержание KOR-61A52S

Страница 1: ...Service Manual Microwave Oven Model KOR 61A52S KOR 81A52S DAEWOO ELECTRONICS CO LTD...

Страница 2: ...e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g e e g g...

Страница 3: ...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 g g g g g g 1 For Safe Operation Damage that allows the microwave energy that cooks or heats the food to escape will result in poor cooking and may c...

Страница 4: ...MICRO WAVE OUTPUT POWER 800W 900W FREQUENCY 2450 MHz OUTSIDE DIMENSIONS WXHXD 465 X 274 X 374 mm 495 X 289 X 404 mm CAVITY DIMENSIONS WXHXD 290 X 200 X 290 mm 320 X 225 X 330 mm NET WEIGHT 13 5Kg 15 0...

Страница 5: ...oor Viewing Screen Allows viewing of food the screen is designed so that light can pass through but not the microwave Glass Cooking Tray Made of special heat resistant glass Food in a proper receptacl...

Страница 6: ...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 g g g g g g CAUTION Maintenances works like the replacing of the power cable must be made by a tech...

Страница 7: ...imer setting 2 Various clicking noises may be heard when turning the V P C Knob This is normal and does not affect the operation of your microwave oven e e h h h h h h e e e e e e e e e e e e e e e e...

Страница 8: ...essel the load is immediately placed on the center of the shelf which is in the lowest normal position 4 Microwave power is switched on 5 Heating time should be exactly 52 sec KOR 61A5 or 47 sec KOR 8...

Страница 9: ...H UPPER TIMER ASSY TIMER SWITCH V P C NO COM INTERLOCK MONITOR SWITCH NC BK WH BL SECONDARY INTERLOCK SWITCH WH GY GY GY GY GY GY OR MAGNETRON 1 3 2 M RD OR NOTE RD RED NOTE WH WHITE NOTE BK BLACK NOT...

Страница 10: ...ER TIMER ASSY TIMER SWITCH V P C NO COM INTERLOCK MONITOR SWITCH NC BK WH BL SECONDARY INTERLOCK SWITCH WH GY GY GY GY GY GY RD RD MAGNETRON 1 3 2 M RD NOTE RD RED NOTE WH WHITE NOTE BK BLACK NOTE GN...

Страница 11: ...IMER ASSY TIMER SWITCH V P C NO COM INTERLOCK MONITOR SWITCH NC BK WH BL SECONDARY INTERLOCK SWITCH WH GY BL GY GY GY GY RD RD MAGNETRON 1 3 2 M RD BK NOTE RD RED NOTE WH WHITE NOTE BK BLACK NOTE GN G...

Страница 12: ...h 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 ma...

Страница 13: ...ge to 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 cre...

Страница 14: ...4 When the 12A fuse is blown out due to the operation of the monitor switch replace primary secondary interlock switch and monitor switch Refer to next page for the necessary adjustment 5 After repair...

Страница 15: ...3 Remove the stopper hinge top from door assembly 4 Reverse the above for reassembly taking care to replace fixing glue 3 To remove door parts NOTE After replacing the door preform a check of correct...

Страница 16: ...crews 3 To reduce gap locatated on part C See Fig A 1 Loosen a screw on the interlock switch assembly located at the bottom of the oven body 2 Draw the interlock switch assembly inward as possible to...

Страница 17: ...C knob B01 and the flat spring B03 from the control panel B02 4 Remove two screws B08 which secure the timer ass y B07 5 Pull out the knob B09 from the timer ass y B07 6 Remove the timer ass y B07 7 P...

Страница 18: ...citor 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 magnetro...

Страница 19: ...to prevent microwave leakage Whenever repair work is carried out on magnetron check the microwave leakage It shall not exceed 4mW cm2 for a fully assembled oven with door normally cosed e e h h h h h...

Страница 20: ...ed 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 pushed the button of themicro switch Then the button of the primary interl...

Страница 21: ...e Completely tighten the two mounting screws 4 Interlock switch resplacement Whenever safety interlock switch are replaced 1 Refer to the following diagram 2 Check the connection of monitor switch aft...

Страница 22: ...at the same time Replace H V T Thermal cut out Outlet has Proper voltage Check continuity of H V T Thermal cut out Check continuity of power supply cord Replace high voltage transformer Replace high...

Страница 23: ...rmal directions Do not operate when you check this continuity Normal reading should be approx 0 Meter with 6V or higher voltage batteries should be used to check the normal direction resistance of the...

Страница 24: ...KOR 81A5 Approx 110 10 KOR 61A5 Filament winding Approx 0 Primary winding Approx 0 2 High voltage capacitor A Check continuity of capacitor with meter on the highest OHM scale B A normal capacitor wil...

Страница 25: ...ero resistance ohmmeter Fig a Condition 1 Door is opened 2 Common terminal of the monitor switch disconnected 3 In case of secondary interlock switch ohmmeter Fig c Condition 1 Door is closed 2 In cas...

Страница 26: ...R 81A5 A02 BARRIER SCREEN O 3517003070 PETP T0 188 1 KOR 61A5 3517003160 KOR 81A5 A03 STOPPER HINGE T AS 3515201500 KOR 61150S 1 A04 DOOR PAINTING AS 3511706100 KOR 61150S 1 KOR 61A5 3511706520 KOR 81...

Страница 27: ...PRING FLAT 3515101600 SUS 301 T0 5 1 B04 COUPLER VPC KNOB 3517400500 POM 1 B05 SCREW TAPPING 7122401211 T2S TRS 4X12 PW MFZN 1 B06 COUPLER TIMER 3517400400 POM 1 B07 TIMER 3518203800 KN35MKD 24E P 1 B...

Страница 28: ...29 3 Main Unit KOR 61A50S KOR 81A50S...

Страница 29: ...TAPPING 3516002700 3 8 TRS 13 3 3 8 3 TRS 6 B TAPTITE TAPPING HEX S 1 1 KOR 61A5 KOR 81A5 KOR 61A5 KOR 81A5 KOR 61A5 KOR 81A5 KOR 61A5 KOR 81A5 KOR 61A5 KOR 81A5 KOR 61A5 KOR 81A5 KOR 61A5 KOR 81A5 KO...

Страница 30: ...31 KOR 61A52S KOR 81A52S...

Страница 31: ...32 F 1 LOCK AS 3513808801 3513806800 KOR 81150S KOR 81150S 1 1 for Germany S...

Страница 32: ...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 DATE APR 1998 Serv ce Man...

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