Daewoo KOC-1C0KB Service Manual page 36

TROUBLE 5) The following visual conditions indicate a probable defective touch control Circuit or button
P.C.B. assembly
1. Incomplete segments.
1) segment missing
2) partial segments missing
3) digit flickering other than normal fluorescent slight flickering
2. A distinct change in the brightness of one or more numbers exists in the display
3. One or more digits in the display are not on when they should be.
4. Display does not count down or up with time cooking or clock operation.
5. Oven is programmable and cooks normally but no display shows.
6. Display obviously jumps in time while counting down.
7. Display counts down noticeably too fast while cooking.
8. Display does not show the time of day when clear button is touched.
9.Oven lamp and turn table motor do not stop although cooking is finished.
CONDITION
Display does
not show
programming
at all, even if
keyboard is
touched.
CHECK
Check each button for
continuity of the button
RESULT
Normal
Malfunction of sub
pcb assembly
35
CAUSE REMEDY
Replace sub
pcb assembly