21
(TROUBLE 4)
The following visual conditions indicate a probable defective touch control circuit
1. Incomplete segments
(1) Segments missing
(2) Partical segments missing
(3) Digit flickering other than normal display slight flickering
(4) “ :0” does not display when press and hold ZERO ON button until
display is turned on and beep sounds.
2. A distinct change in the display is not on when it should be.
3. One or more digits in the display are not on when they should be.
4. Display indicates a number different from one pressed.
5. Specific numbers (for example 2 or 3) will not display when the button is touched.
6. Display does not count down or up with time cooking or clock operation.
7. Oven is programmable and cooks normally but no display shows.
8. Display obviously jumps in time while counting down.
9. Display counts down noticeably too fast while cooking.
10. Oven lamp and turntable motor do not stop although cooking is finished. Check if the RELAY 2 contacts close.
If they close, replace P.C.B main-assembly.
CONDITION
CHECK
Check each button for
continuity of the P.C.B
sub- assembly for the following
button check procedure
Malfunction of the
P.C.B main-
assembly
RESULT
Normal
CAUSE
REMEDY
Replace the
P.C.B main-
assembly
Display does
not show
programming
at all, even if
keyboard is
pressed
Malfunction of the
sub pcb assembly
Abnormal
Replace
control box
sub-assembly
NOTE
Before following the particular steps listed above in the trouble shooting guide for button control panel's, failure,
please check for the continuity of each wire-harness between the P.C.B sub-assembly and P.C.B.
main-assembly.