Daewoo KOR-630A0S, Руководство по обслуживанию, Страница: 21 / 33

TROUBLE SHOOTING GUIDE
( TROUBLE 4 ) The follow ing visual conditions indicate a probable defective touch control circuit
or m em brance sw itch assem bly.
1. Incomplete segments,
1) Segments missing.
2) Partical segments missing.
3) Digit fickering other than normal fluorescent slight flickering.
4) “ : 0 ” does not display when power is on.
2. A distinct change in the diplay are not on when they
numbers is the display.
3. One or more digits in the diplay are not on when they should be.
4. Display indicates a number different from one touched.
5. Specific numbers (for example 2 or 3) will not display when the panel 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. 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 2 contacts close if they are
close, replace touch control circuit.
g
CON DITION
CHECK RESULT CAUSE REM EDY
D isplay does
not show
program m ing
at all, even if
keyboard is
touched.
N orm al
R eplace
control box
sub-a ssem bly
R eplace
the button
keyboard
M alfunction
of touch
control circuit
of control box
sub-a ssem bly
N orm al
C heck eac h button for
continuity of the button
keyboard for the
following k eyboard
check procedure
M alfunction
of botton
keyboard
NOTE
B efore following the particular steps listed above in the rtouble shooting guide for the m em brane keyborad’s, failure,
please check for the continuity of each w ire-harm ess betw een the m em brane keyboard and P.C.B . assem bly.