LOCK doesn’t come on.
GRID1 (G1), 21
30
GRILL, M/W don’t come on.
GRID2 (G2), 17
29
WEIGHT DEFROST, NO/CUPS don’t come on.
GRID3 (G3), 9
26
TIME DEFROST doesn’t come on.
GRID4 (G4), 10
28
AUTO START, g don’t come on.
GRID5 (G5), 4, 7
27
SEGMENT “a” doesn’t come on from G1 to G5.
SEGMENT d, 19
39
SEGMENT “b” doesn’t come on from G1 to G5.
SEGMENT e, 18
40
SEGMENT “c” doesn’t come on from G1 to G5.
SEGMENT f, 16
41
SEGMENT “d” doesn’t come on from G1 to G5.
SEGMENT a, 23
36
SEGMENT “e” doesn’t come on from G1 to G5.
SEGMENT b, 22
37
SEGMENT “f” doesn’t come on from G1 to G5.
SEGMENT c, 20
38
SEGMENT “g” doesn’t come on from G1 to G5.
SEGMENT g, 15
42
LOCK, M/W, NO/CUPS, g don’t come on.
UPPER BAR h, 5
33
GRILL, TIME DEFROST,
LOWER BAR i,
34
WEIGHT DEFROST, AUTO START don’t come on.
6, 8, 9, 11
TROUBLE
DISPLAY NAME
& PIN NO.
MICOM OUTPUT
IN PIN NO.
3) Display problems
The display trouble shooting data
4) When there is no microwave oscillation.
(1) When touching “START” pad, oven lamp does not turn on.
Fan motor and turntable motor do not rotate, but cook indicator in display comes on.
* Cause: RELAY “2” does not operate.
NO.
CAUSE
MEASUREMENT
RESULT
REMEDY
1
Poor contact between
Check the voltage
Fix the PIN 1 & 25
P.C.B. and display
of PIN 1 & PIN 25.
2.4 VAC
on the P.C.B.
filament.
2
Defective Display
Refer to “The display
Replace P.C.B.
trouble shooting data”
assembly.
below.
3
Loss of vacuum in
White
Replace P.C.B.
the display
spot is
assembly
generated
on the
display
44
Summary of Contents for KOG-261M
Page 1: ...Service Manual Microwave Oven KOG 261M KOG 262M KOG 281M KOG 282M DAEWOO ELECTRONICS CO LTD...
Page 24: ...23...
Page 37: ...36 WIRING DIAGRAM...
Page 45: ...45 Fig 6 Measurement Point...
Page 48: ...2 COMPONENT INFORMATION 1 Transistor 2 Diode and Zener Diode 48...
Page 49: ...49 3 PRINTED CIRCUITS BOARD...
Page 50: ...50 4 P C B CIRCUIT DIAGRAM...
Page 54: ...54...