Daewoo KOC-970T1S, Service Manual

Page: 41 / 48

PRINTED WIRING BOARD
(3) Display Problems
- The display trouble shooting data
NO CAUSE MEASUREM ENT RESULT REMEDY
1
P oor contact betw een P.C .B.
and display filam ent
C heck the voltage of display pin 1 & 25 2.6 VA C
Fix the pin 1 & 25 on
the P.C .B .
2
T he display has som e
trouble in its segm ent orgrid R efer to T he display trouble shooting
data below R eplace P.C .B.
assem bly
3 Loss vacuum in the display F ind w hite spot
R eplace P.C .B.
assem bly
TROUBLE DISPLAY NAM E & PIN NO. MICOM OUTPUT IN PIN NO.
M /W & AU TO C O O K don’t com e on. G rid 1 (G 1), 21 24
G R ILL & P IE don’t com e on. G rid 2 (G 2), 17 17
C O M B I & TE M P C O O K don’t com e on. G rid 3 (G 3), 14 18
W E IG H T D E F R O ST & K g don’t com e on. G rid 4 (G 4), 10 16
TIM E D EF R O ST don’t com e on. G rid 5 (G 5), 4,7 13
Segm ent a doesn’t com e on from G 1 to G 5 Segm ent a, 23 26
Segm ent b doesn’t com e on from G 1 to G 5 Segm ent b, 22 25
Segm ent c doesn’t com e on from G 1 to G 5 Segm ent c, 20 23
Segm ent d doesn’t com e on from G 1 to G 5 Segm ent d, 19 22
Segm ent e doesn’t com e on from G 1 to G 5 Segm ent e, 18 21
Segm ent f doesn’t com e on from G 1 to G 5 Segm ent f, 16 20
Segm ent g doesn’t com e on from G 1 to G 5 Segm ent g, 15 19
Segm ent h doesn’t com e on from G 1 to G 5 Low er bar h, 5 14
Segm ent i doesn’t com e on from G 1 to G 5 U pper bar i, 6,8,9,11 15