Daewoo KOG-261M, Service Manual

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(TROUBLE 2) Digital readout display does not show programming, even if the mem-
brane keyboard is programmed by touching proper pads.
MEMBRANE KEYBOARD CHECK PROCEDURE
1. Check the pad termination order and nomenclature.
Fig. 4
Check Result
Cause Cause
Replace
control
box sub-
assembly
Check each pad for
continuity of the
membrane keyboard
for the following
keyboard check
Condition
Display does not
show programming
at all, even if
keyboard is
touched Normal
Malfunction
of touch
control
circuitry of
control box
Replace
the mem-
brane
Abnormal
Malfunction
of the memb-
rane keyboard
NOTE:
Before following the particular steps listed above in the trouble shooting guide for the
membrane keyboard, failure, please check for the continuity of each wire-harness
between the membrane keyboard and control box assembly.