Daewoo KOG-875T2S, Service Manual

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1 1. Incomplete segments,
(A) Segments missing.
(B) Partical segments missing.
(C) Digit flickering other than normal fluorescent slight flickering.
(D) 0 does not display when power is on.
1 2. A distinct change in the brightness of one or more numbers is the display.
1 3. One or more digits in the display are not on when they should be.
1 4. Display indicates a number different from one touched.
1 5. Specific numbers (for example 2 or 3) will not display when the panel is touched.
1 6. Display does not count down or up with time cooking or clock operation.
1 7. Oven is programable and cooks normally but no display shows.
1 8. Display obviously jumps in time while counting down.
1 9. Display counts down noticeably too fast while cooking.
10. Display does not show the time of day when clear pad is touched.
11. Oven lamp and turntable motor do not stop although cooking is finished. Check if
the RELAY "4" contacts close if they are close, replace touch control circuit.
M/W
PROGRAM KG
COOK
GRILL COMBI WEIGHT-TIME
DEFROST
NOTE1 : Before following the particular steps listed above in the trouble shooting guide for the button keyboard's,
failure, please check for the continuity of each wire-harness between the button keyboard and P.C.B.
assembly.
(TROUBLE 5) The following visual conditions indicate a probable defective touch control circuit or membrance
switch assembly
Condition Check Result Cause Remedy
Replace
control box
sub-
assembly
Replace the
button
keyboard
Display does not show
programming at all, even
if keyboard is touched. Check each button for
continuity of the button
keyboard for the following
keyboard check
procedure
Normal
Abnormal
Malfunction of
touch control
circuitry of control
box sub-assembly
Malfunction of the
button keyboard