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.
Everything works
as specified.
Still have trouble.
Defective PCB
assembly.
Replace PCB
assembly.
Defective PCB
assembly.
Loose
connection.
Defective key
membrane
assembly.
Replace PCB
assembly.
Connect them
tightly.
Replace key
membrane
assembly.
Check the conn-
ection between
membrane key
assembly and
PCB assembly.
2. Some inputs
cannot be
programmed.
Replace key
membrane
assembly and
check operation.
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.
Содержание MS-1947C
Страница 9: ...SCHEMATIC DIAGRAM 4 3 6 ...
Страница 29: ...6 2 13536A 13581A 14970A 14026A 13552A 13213A 14890A 13720D DOOR PARTS EV ...
Страница 30: ...6 3 23506A 23572A 268711 24781M WTT021 CONTROL PANEL PARTS EV ...
Страница 31: ...6 4 33390G WTT021 33112U WTP013 36549S 33052A WTT010 35889A OVEN CAVITY PARTS EV ...
Страница 32: ...6 5 466003 466001 43501A 43500A 466001 WSZ085 44510A LATCH BOARD PARTS EV ...
Страница 34: ...6 7 56170D 63302A WSZ002 WTT021 65006B 63303A BASE PLATE PARTS EV ...
Страница 35: ......