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.
5-12
(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 MS-2642FB
Страница 26: ...6 1 EXPLODED VIEW INTRODUCTION ...
Страница 27: ...6 2 13213A 13552A 15006A 13581A 13536A 14026A 14970A 13352A 13720D DOOR PARTS ...
Страница 28: ...6 3 23506A 23572A 268711 WTP018 24781M CONTROLLER PARTS ...
Страница 29: ...6 4 36549S WTP013 33390G 34370T WTT010 WTT021 33112U 35889A WTT011 33052M OVEN CAVITY PARTS ...
Страница 30: ...6 5 WSZ085 466001 466003 466001 44510A 43500A LATCH BOARD PARTS ...
Страница 32: ...6 7 WTT021 63302A 63303A 56170D WSZ002 948503 WTT028 647781 BASE PLATE PARTS ...
Страница 33: ...8 1 SCHEMATIC DIAGRAM OF P C B ...
Страница 34: ...8 2 PRINTED CIRCUIT BOARD ...
Страница 35: ...P NO 3828W5S2284 Apr 2002 Printed in Korea ...