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TROUBLE SHOOTING GUIDE

(TROUBLE 2) Display shows all figures selected, but oven does not start cooking, even though desired

program and time are set and start pad is tapped.

CON DITION

CHE CK

RES ULT

CAU SE

REM EDY

G rill heater is  

not h eated.

N o

C ontinuity

C hec k contin uity of

prim ary interlock sw itc h

C hec k contin uity of

seco ndary interlock  an d

D .O .M . sw itch

C hec k D .C. v oltage

being  supplie d  to

R EL AY   (R Y2 )  coil

M alfu nction

of prim ary 

interlock sw itch

M alfu nction

of se condary
interlock and

D .O .M . sw itch

D efe ctive

touch  control

circu it

F aulty

conta cts of

R EL AY

(RY 2 ) or open

relay  coil

A dju s t  or

R eplace

A dju s t  or

R eplace

R eplace

R eplace

N o

C ontinuity

0 V

A pprox

15 V D C

NOTE

A ll these sw itches m ust be replaced at the sam e tim e, please refer to “Interlock M echanism  A nd A djustm ent”.

CON DITION

CHECK

RESULT

CAUSE

REM EDY

O utlet has 

proper voltage
F use does not

blow.

C heck con tinuity of 

m agn etron

N o

C ontinuity

D efective

m agn etron

R eplace

C heck con tinuity of noise

filter board

C heck con tinuity of

pow er supply cord

N o

C ontinuity

N o

C ontinuity

N orm al

D efective

noise filter board

O pen pow er

supply cord

D efective

touch control 

circuit

R eplace

A djus t

A djus t

Содержание KOR-630A0S

Страница 1: ...Service Manual Microwave Oven Model KOR 630A0S KOR 860A0S KOR 860A0N DAEWOO ELECTRONICS CO LTD S M No R630A0S002...

Страница 2: ...tron or other microwave source and make repairs as necessary 1 Interlock operation 2 Proper door closing 3 Seal and sealing surfaces arcing wear and other damage 4 Damage to or loosening of hinges and...

Страница 3: ...certified oven unit is found to servicing a microwave emission check should be performed prior to servicing the oven a inform the manufacturer importer or assembler b repair the unit at no cost to the...

Страница 4: ...PPROX 13 Kg 28 7 lbs TIMER 59 min 90 sec FUNCTION SELECTIONS MICROWAVE POW ER SELECTIONS 10 LEVELS CAVITY VOLUME 0 7 Cu Ft MODEL KOR 860A0S KOR 860A0N POW ER SUPPLY 230V 50Hz 860A0S 220V 50Hz 860A0N S...

Страница 5: ...EXTERNAL VIEW 1 OUTER DIMENSION KOR 630A KOR 860A 465 279 360 495 294...

Страница 6: ...Protects the microwave outlet from splashes of cooking foods 5 OVEN LAMP Automatically turns on during oven operating 6 SAFETY INTERLOCK SYSTEM 7 CONTROL PANEL 8 GLASS COOKING TRAY Made of special hea...

Страница 7: ...reheat 5 More Used to add time to cooking 6 Less Used to remove time from cooking 7 Auto Defrost Used to defrost foods for weight 8 Power Used to set power level 9 Defrost Used to defrost foods for ti...

Страница 8: ...of special type which if damaged must be repaired with cable of same type Such a cable can be purchased from DAEWOO and must be installed by a Qualified Person 6 Examine the oven after unpacking for a...

Страница 9: ...LEAR pad is touched during the oven operation the oven stops cooking and all information retained To erase all information except the present time touch the STOP CLEAR pad once more If the oven door i...

Страница 10: ...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 11: ...PTION Q TY REMARK A01 3512203810 FRAME DOOR ABS XR 401 H 2938 1 A02 3517003050 BARRIER SCREEN O ACRYL 1 A03 3515304610 SUPPORTER BARR S O PP 1 A04 3515204100 STOPPER HINGE T AS KOR 63150S 1 A05 351170...

Страница 12: ...top and then push the door to contact the door seal to oven front surface Tighten a screw 2 To reduce gap located on part B Loosen two screws on stopper hinge under and then push the door to contact t...

Страница 13: ...H 2938 1 B06 441G430171 SPRING BUTTON SW P DIA 0 7 1 B07 3516906910 BUTTON DOOR OPEN ABS XR 401 H 2938 1 REF NO PART CODE PART NAME DESCRIPTION Q TY REMARK B01 3518521300 SW ITCH MEMBRANE KOR 860A0S...

Страница 14: ...sconnect membrane tail from the conector of the PCB assembly 5 Detach membrane from the control panel 6 Remove the door open button and button spring from the control panel 7 Reverse the above steps f...

Страница 15: ...e the above steps for reassembly NOTE Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave leakage Whenever repair work is carried out...

Страница 16: ...w forward the wind guide assembly 5 Pull the fan from the motor shaft 6 Remove two screws which secure the motor shaded pole 7 Remove the motor shaded pole 8 Reverse the above steps for reassembly 9 T...

Страница 17: ...losed the hook pushes the lock lever downward The lock lever presses the button of the interlock monitor switch to bring it under OFF condition and presses the button of the secondary interlock switch...

Страница 18: ...ormal Fuse again blows Replace NOTE 1 Replace NOTE 1 Replace NOTE 1 Replace Replace Check continuity of interlock monitor switch with door closed COM NC Check continuity of both primary and secondary...

Страница 19: ...erlock and D O M switch Defective touch control circuit Faulty contacts of RELAY RY2 or open relay coil Adjust or Replace Adjust or Replace Replace Replace No Continuity 0 V Approx 15 VDC NOTE All the...

Страница 20: ...ce Replace Replace Replace Replace No microwave oscillation Check continuity of high voltage fuse Check continuity of high voltage rectifier in forward and backward direction with DC m egger Check con...

Страница 21: ...8 Display obviously jumps in time while counting down 9 Display counts down noticeably too fast while cooking 10 Display does not show the time of day when clear pad is touched 11 Oven lamp and turnt...

Страница 22: ...tely 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 A seconds Refer to table as following Heating time is me...

Страница 23: ...oor 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 is unk...

Страница 24: ...e 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 should be use...

Страница 25: ...WIRING DIAGRAM...

Страница 26: ...DC 2 IC1 PIN 35 T 20 ms 50Hz 3 IC1 PIN 31 OR 32 T 250 ns 4MHz NO MEASURE POINT WAVE FORM REMEDY REMARK 1 MP1 DC 5V 0 25V Replace VL1 EC1 ZD2 NO LOAD 2 MP2 DC 12V 2 0V Replace EC2 D12 13 14 NO LOAD PRI...

Страница 27: ...is opened during operation the Count down timer does not stop refer to Circuit Diagram Point 1 Check method 5 When the digital clock does not operate properly refer to Circuit Diagram Point 5 If cloc...

Страница 28: ...2 PCB CIRCUIT DIAGRAM PRINTED CIRCUIT BOARD...

Страница 29: ...3514315410 1 14 R ARRAY RA1 7P 6 1 8 100K J RA 87X104J 1 15 RESISTOR R1 R7 1 6W 330 5 RD AZ331J 7 16 RESISTOR R8 10 12 14 22 1 6W 1K 5 RD AZ102J 5 17 RESISTOR R11 20 21 1 6W 100K 5 RD AZ104J 3 18 RES...

Страница 30: ...1 DOOR ASSEMBLY Refer to Disassembly and assembly 2 CONTROL PANEL ASSEMBLY Refer to Disassembly and assembly 3 TOTAL ASSEMBLY EXPLODED VIEW AND PARTS LIST...

Страница 31: ...CREW TAPTITE TT3 TRS 4X8 MFZN O F20 3513003200 HOLDER HV CAPACITOR SECC T0 6 O F21 3518302200 CAPACITOR HV 2100VAC 0 98 F 187 O F22 3518400400 DIODE HV HVR 1X 3AB 12KV 187 O F23 3518701100 FUSE HV 5KV...

Страница 32: ...ZN O F20 3513003200 HOLDER HV CAPACITOR SECC T0 6 O F21 3518112200 CAPACITOR HV 2100VAC 0 98 F 187 O F22 3518400400 DIODE HV HVR 1X 3AB 12KV 187 O F23 3518701100 FUSE HV 5KV 0 55A HV 41A55 02 O F24 35...

Страница 33: ...ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC E mail G7F00E web dwe co kr FAX 02 360 8184 TEL 02 360 8188 8180 PRINTED DATE J...

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