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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 turnatable motor do not rotate, but cook indicator in display comes on.
* Cause : RELAY 2 does not operate.
Display layout
(Top View)
NO CAUSE MEASUREMENT RESULT REMEDY
1 Defective Display Refer to “The display trouble Replace P.C.B. assembly
shooting data”bellow.
TROUBLE DISPLAY NAME & PIN NO. MICOM OUTPUT IN PIN NO.
STAGE 1, LOCK DON”T COME ON. Digit 1 (G1), 10 31
STAGE 2, NO don’t come on. Digit 2 (G2), 11 32
WEIGHT DEFROST, CUPS don’t come on. Digit 3 (G3), 14 30
TIME DEFROST doesn’t come on. Digit 4 (G4), 12 33
AUTO START, g don’t come on. Digit 5 (G5), 13 29
SEGMENT “a” doesn’t come on from G1 to G5. SEGMENT a, 7 20
SEGMENT “b” doesn’t come on from G1 to G5. SEGMENT b, 6 19
SEGMENT “c” doesn’t come on from G1 to G5. SEGMENT c, 5 18
SEGMENT “d” doesn’t come on from G1 to G5. SEGMENT d, 4 17
SEGMENT “e” doesn’t come on from G1 to G5. SEGMENT e, 3 16
SEGMENT “f” doesn’t come on from G1 to G5. SEGMENT f, 2 14
SEGMENT “g” doesn’t come on from G1 to G5. SEGMENT g, 1 13
LOCK, NO, CUPS, g don’t come on. LOWER BAR h, 9 15
STAGE 1, STAGE 2, TIME DEFROST, WEIGHT
UPPER BAR i, 8 21
DEFROST, AUTO START don’t come on.
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