Daewoo KOG-875T2S, Руководство по обслуживанию, Страница: 34 / 40

33
3) Display problems
The display trouble shooting data.
NO CAUSE
1 Poor contact between P.C.B.
and display filament.
2 The display has some trouble
in its segment or gril.
3 Loss vacumm in the display.
MEASUREMENT
Check the voltage of display pin
1 & 25
Refer to “The display trouble shooting
data” below
Find white spot.
RESULT REMEDY
2.6VAC Fix the pin 1 & 25 on
the P.C.B.
Replace P.C.B.
assembly.
Replace P.C.B.
assembly.
DISPLAY NAME & PIN NO.
Grid 1 (G1), 4, 7
Grid 2 (G2), 10
Grid 3 (G3), 14
Grid 4 (G4), 17
Grid 5 (G5), 21
Segment a, 23
Segment b, 22
Segment c, 20
Segment d, 19
Segment e, 18
Segment f, 16
Segment g, 15
Lower bar h, 5
Upper bar i 6, 8, 9 ,11
MICOM OUTPUT IN PIN NO.
13
16
18
17
24
26
25
23
22
21
20
19
14
15
TROUBLE
Grid 1 doesn’t come on.
Grid 2 doesn’t come on.
Grid 3 doesn’t come on.
Grid 4 doesn’t come on.
Grid 5 doesn’t come on.
Segment “a” dosent come on from G1 to G5.
Segment “b” dosent come on from G1 to G5.
Segment “c” dosent come on from G1 to G5.
Segment “d” dosent come on from G1 to G5.
Segment “e” dosent come on from G1 to G5.
Segment “f” dosent come on from G1 to G5.
Segment “g” dosent come on from G1 to G5.
Segment “h” dosent come on from G1 to G5.
Segment “i” dosent come on from G1 to G5.