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