5-13
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 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 appear 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 cooing.
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.
(TROUBLE 1) The following visual conditions indicate a probable defective control circuit.
CONDITION
CHECK
RESULT
CAUSE
REMEDY
1. No input can be
programmed.
Certainly.
No certainly.
Defective PCB
assembly.
Loose connec-
tion.
Replace PCB
assembly.
Connect them
tightly.
Check the conn-
ection between
membrane key
assembly and
PCB assembly.
2. Some inputs
cannot be pro-
grammed
3. Display shows a
number or figure
different from one
touched,
4. Random pro-
gramming when
touching other
pads.
5. Display is fixed
some figure and
can not be
accepted any
input.
Everything works
as specified.
Still have trouble.
Defective key
membrane assem-
bly.
Defective PCB
assembly.
Replace key mem-
brane assembly.
Replace PCB
assembly.
Replace key
membrane
assembly and
check operation.
