Daewoo KOT-150S0A, Service Manual

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47
3) Display problems
- THE DISPLAY TROUBLE SHOOTING DATA
NO CAUSE MEASUREMENT RESULT REMEDY
1 Poor contact between PCB Check the voltage of PIN 1, 2 2.6 VAC FIX the PIN 1,2 &
and display filament & PIN 32, 33 32, 33 on the PCB
2 Defective display Refer to the display trouble Replace PCB
shooting data below. assembly
3 Loss of vacuum in the White spot is Replace PCB
display generated on assembly
the display
TROUBLE DISPLAY NAME & PIN NO. MICOM OUTPUT IN PIN NO.
MEMO doesn’t come on.
A.STSART doesn’t come on.
AM, PM doesn’t come on.
, MUTE don’t come on.
TT OFF doesn’t come on.
, TIMER don’t come on.
SENSOR don’t come on.
SEGMENT “a” doesn’t come on from G1 to G7
SEGMENT “b” doesn’t come on from G1 to G7
SEGMENT “c” doesn’t come on from G1 to G7
SEGMENT “d” doesn’t come on from G1 to G7
SEGMENT “e” doesn’t come on from G1 to G7
SEGMENT “f” doesn’t come on from G1 to G7
SEGMENT “g” doesn’t come on from G1 to G7
SEGMENT “h” doesn’t come on from G1 to G7
SEGMENT “i” doesn’t come on from G1 to G7
SEGMENT “j” doesn’t come on from G1 to G7
SEGMENT “k” doesn’t come on from G1 to G7
SEGMENT “l”doesn’t come on from G1 to G7
SEGMENT “m” doesn’t come on from G1 to G7
SEGMENT “n” doesn’t come on from G1 to G7
, , AM don’t come on.
SENSOR, TIMER, TTOFF, MUTE, PM, A.START, MEMO don’t come on.
GRID1 (1G), 24
GRID2 (2G), 25
GRID3 (3G), 26
GRID4 (4G), 27
GRID5 (5G), 28
GRID6 (6G), 29
GRID7 (7G), 30
SEGMENT a, 11
SEGMENT b, 7
SEGMENT c, 16
SEGMENT d, 14
SEGMENT e, 17
SEGMENT f, 4
SEGMENT g, 5
SEGMENT h, 6
SEGMENT i, 8
SEGMENT j, 18
SEGMENT k, 9
SEGMENT l, 10
SEGMENT m, 13
SEGMENT n, 19
UPPER BAR p15, 15
LOWER BAR p16. 12
7
6
5
4
3
2
1
17
21
12
14
11
24
23
22
20
10
19
18
15
9
13
16