Daewoo KOG-875T Service Manual download pdf (Page 37)

7) When “ ” comes on display.

CHECK METHOD

if clock does not keep exact time, you must check. Diode 1, transistor Q2.

POINT WAVEFORM

T: 20ms (60 Hz)

473

1N4148

1N4004

R17

4.7K

R16

4.7K

C3198

473

R13

4.7K

102

R15

4.7K

45 INT1

+5V

T=20ms (50Hz)

6) When the door is opened during operation, the count down timer does not stop.

CHECK METHOD

R25

4.7K

R24

100K

C12

104

C13

104

R23

330

R28

4.7K

R22

4.7K

CN2

35313-0210

D.O.M

COM

POINT

STAGE

DOOR OPENED OPEN +5VDC

DOOP CLOSED CLOSED GND

NOTE :

Check the state of the secondary interlock switch.

1 2 ... 32 33 34 35 36 37 38 39 40

Service Manual 1
TABLE OF CONTENTS 2
SPECIFICATIONS 4
EXTERNAL VIEWS 4
NAMES AND FUNCTION OF PARTS 5
CONTROL PANEL 6
(1) Primary interlock switch 7
(2) Monitor interlock switch 8
- Adjustment 8
Adjustment steps : 8
1. Check the earthing 9
DISASSEMBLY AND ASSEMBLY 10
High voltage circuit wiring 11
PROGRAM COOK 15
CUTTING(8EA) 16
TROUBLE SHOOTING GUIDE 18
Condition Check Result Cause 20
RA3 RGLD7X104J CA1 B7102M 23
MEASUREMENT 24
3. Microwave Leakage Test 25
COMPONENT TEST PROCEDURE 26
WIRING DIAGRAM 27
SCHEMATIC DIAGRAM 28
PRINTED WIRING BOARD 33
3) Display problems 34
NO CAUSE 34
RESULT REMEDY 34
5) When there is not heater 36
7) When “ ” comes on display 37
P.C.B CURCUIT DIAGRAM 38
MAIN P.C.B. ASS’Y PART LIST 39
DAEWOO ELECTRONICS CO., LTD 40

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Daewoo KOG-875T Service Manual Page 37

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