Daewoo KOR-122M0A Service Manual page 46

3) Display problems
NO. CAUSE
1 Defective Display
i
c
b
h
The display trouble shooting data
STAGE 1, LOCK don't come on.
STAGE 2, NO don't come on.
WEIGHT DEFROST, CUPS don't come on.
TIME DEFROST doesn't come on.
AUTO START, g don't come on.
SEGMENT "a" doesn't come on from G1 to G5.
SEGMENT "b" doesn't come on from G1 to G5.
SEGMENT "c" doesn't come on from G1 to G5.
SEGMENT "d" doesn't come on from G1 to G5.
SEGMENT "e" doesn't come on from G1 to G5.
SEGMENT "f" doesn't come on from G1 to G5.
SEGMENT "g" doesn't come on from G1 to G5.
LOCK, NO, CUPS, g don't come on.
STAGE1, STAGE2, TIME DEFROST, WEIGHT
DEFROST, AUTO START don't come on.
4) When there is no microwave oscillation.
(1) When touching "START" pad, oven lamp does not turn on.
Fan motor and turnatable motor do not rotate, but cook indicator in display comes on.
* Cause: RELAY "2" does not operate.
RY2
G5B-12V
MEASUREMENT
Refer to "The display
trouble shooting data"
below.
14
d
eo
e
g
f
a fo
G1 G2 G4
G3
TROUBLE
+12V DC
D9
1N4002A
A
RESULT
1
Display layout
G5
(Top View)
DISPLAY NAME
& PIN NO.
Digit 1 (G1), 10
Digit 2 (G2), 11
Digit 3 (G3), 14
Digit 4 (G4), 12
Digit 5 (G5), 13
SEGMENT a, 7
SEGMENT b, 6
SEGMENT c, 5
SEGMENT d, 4
SEGMENT e, 3
SEGMENT f, 2
SEGMENT g, 1
LOWER BAR h, 9
UPPER BAR i, 8
Q11 KRC106M
Q12 KRC 106M
45
REMEDY
Replace P.C.B.
assembly.
MICOM OUTPUT
IN PIN NO.
31
32
30
33
29
20
19
18
17
16
14
13
15
21
IC1
40
FAN RY
TRAY RY