1. Incomplete segments.
• Segment missing.
• Partial segment missing.
• Digit flickering (NOTE: Slight flickering is normal.)
2. Colon does not turn on or blink.
3. A distinct change in the brightness of one or more numbers in display.
4. One or more digits in the display are not lighting.
5. Display indicates a number different from one touched, for example, key in 5 and 3 appears in the display.
6. Specific numbers (for example 7 or 9) will not display when key pad is touched.
7. Display does not count down with time blinking or up with clock operation.
8. Display obviously jumps in time while counting down.
9. Display counts down too fast while cooking.
10. Each indicator light does not turn on after setting cooking cycle.
11. Display time of day does not reappear when cooking is finished.
12. Beep sound is not heard when correct key is touched.
5-13
(TROUBLE 1) The following visual conditions indicate a probable defective control circuit.
CONDITION
CHECK
RESULT
CAUSE
REMEDY
1. No input can be
programmed.
Continuity.
No continuity.
Defective PCB
assembly.
Loose
connection.
Replace PCB
assembly.
Connect them
tightly.
Check the conn-
ection between
membrane key
assembly and
PCB assembly.
2. Some inputs
cannot be
programmed.
3. Display shows a
number or figure
different from one
touched.
4. Random
programming
when touching
other pads.
5. Display is fixed
at some figure
and can not
accept any
input.
Everything works
as specified.
Still have trouble.
Defective key
membrane
assembly.
Defective PCB
assembly.
Replace key
membrane
assembly.
Replace PCB
assembly.
Replace key
membrane
assembly and
check operation.
Содержание MG-556EJ
Страница 9: ...SCHEMATIC DIAGRAM 4 3 ...
Страница 29: ...6 2 13581A 13213A 14890A 13552A 13536A 14026A 14970A WTP004 15006A 13720D 13550A 136501 136502 DOOR PARTS ...
Страница 30: ...6 3 24781S 250201 23551A 23806C 268711 268712 250202 249401 249402 WTP015 CONTROL PANEL PARTS ...
Страница 32: ...6 5 466001 43500A 466001 43501A 466003 LATCH BOARD PARTS ...
Страница 34: ...6 7 63303A 63302A WTT021 WSZ062 WTT030 647781 56170D BASE PLATE PARTS ...
Страница 35: ...8 1 SCHEMATIC DIAGRAM OF P C B ...
Страница 36: ...8 2 PRINTED CIRCUIT BOARD ...
Страница 37: ...P NO 3828W5S1528 Mar 2000 Printed in Korea ...