Daewoo KOC-960P0A Service Manual page 48

3) Display Problems
NO. CAUSE
1 Poor contact between
P.C.B. and display filament
2 The Display has some
troubles in its
segment or grid.
3 Loss of vacuum in
the display
Display trouble shooting data
TROUBLE
don't come on.
,
don't come on.
,
don't come on.
,
don't come on.
,
, Kg 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.
,
, , ,
kg, don't come on.
, , ,
* In rotisserie type, "kg" indicator is changed to "
4) When there is no microwave oscillation.
(1) When touching " " pad, oven lamp does not turn on.
Fan motor and turntable motor do not rotate, but cook indicator in display comes on.
* Cause : RELAY "5" does not operate.
RY5
RELAY "5"
MEASUREMENT
1. Check the voltage
of PIN 1 & PIN 25.
Refer to "The display
trouble shooting data"
below
don't come on.
R43
D13
+ 15V + 15V
White spot
DISPLAY NAME
& PIN NO.
GRID1 (G1), 21
GRID2 (G2), 17
GRID13 (G3), 14
GRID4 (G4), 10
GRID5 (G5), 4, 7
SEGMENT d, 19
SEGMENT e, 18
SEGMENT f, 16
SEGMENT a, 23
SEGMENT b, 22
SEGMENT c, 20
SEGMENT g, 5
UPPER BAR h, 5
LOWER BAR i,
6, 8, 9, 11
" indicator.
Q10
B
54
RESULT REMEDY
2.2 VAC Fix the PIN 1 &
25 on the P.C.B.
Replace P.C.B.
assembly.
White Replace P.C.B.
soft is assembly
generated
on the
display
MICOM OUTPUT
IN PIN NO.
52
56
59
60
63
54
55
57
50
51
53
58
62
61
A
MICOM
R18
8