Sanyo PLC-SW10, Руководство по обслуживанию

Страница: 36 / 93

-35-
TP532
TP562
A/D
IC202
DIGITAL
RGB
MATRIX
IC6101
SYSTEM
CONTROL
&
SCAN CONV.
IC301
D/A
IC2200
TIMING
CONTROL
IC3301
LCD
DRIVER
IC401
R-S/H
IC501
R-
LCD
PANEL
G-
LCD
PANEL
B-
LCD
PANEL
R-
LEVEL
SHIFT
IC3501
G-
LEVEL
SHIFT
IC3531
B-
LEVEL
SHIFT
IC3561
G-S/H
IC531
B-S/H
IC561
PC/AV
SW
IC5201
BUFFER
IC3321
TP3321
TP3332
TP501
TP502
TP531
TP512
TP513
TP511
TP561
TP211
TP212
TP213
TP219
TP217
TP218
TP221R
TP221G
TP221B
TPDVS
TPDHS
IC5251
IC5252
IC3581
IC1002
IC1001
IC5282
IC5253
TP2211R
TP2221G
TP2231B
IC2211
IC2221
IC2231
S-C
S-Y
VIDEO
H-SYNC
V-SYNC
R
G
B
AV BOARD
COMPO-
NENT
BOARD
MAIN BOARD
VIDEO/S-VIDEO
S-C
S-Y
VIDEO
H-SYNC
V-SYNC
PC_R
PC_G
PC_B
R/Cr/Pr
R
R
G/Y
G
G
B/Cb/Pb
B
B
DCLK/DHS/D
V
S
DCLK/DHS/DVS
HCLK/STV/HST/ENB
TP3581
IC3582
TP3582
FRP NRS
NRS
7
15
22 9
8
1
3
4
6
5
12
11
47
18
16
14
22 24 26
5
6
46
43
40
16
47
47
PC/AV
Q5112
Cb/Pb
Cr/Pr
S/VIDEO
-SW
IC5281
TP5112
TP5113
TP5111
TP7223
TP7224
9
1
8
12
3
5
16
S/VIDEO
Q5211
4
1
7
21
18
G-SYNC
SEP.
IC1021
28
90
7
49
18
SYNC
SEP.
IC6901
DIGITAL
VIDEO
DECODER
IC5101
18
20
16
2. Check that the PC/AV switching signal is correct.
Pin 16 of IC5201 ...........................................AV: H, PC: L
Pin 5 of IC5282 ..............................................AV: H, PC: L
3. Check that the RGB signals are observed at follow-
ing test points.
TP211, TP221R, TP2211R ...................................R-signal
TP212, TP221G, TP2221G...................................G-signal
TP213, TP221B, TP2231B ....................................B-signal
4. Check that the signals are observed at following test
points.
TPDHS, TP3322 ....................................................V-Sync,
TPDVS, TP3321 .....................................................H-Sync
5. Check that the S/H signals are observed at following
test points.
TP501, TP511 .......................................................R-signal
TP531, TP512.......................................................G-signal
TP561, TP513 .......................................................B-signal
6. Check that the NRS signals are observed at test
points TP3581 and TP3582.
1. Check that the Vcc-vo5V, -5V) are applied to
AV circuits.
Pins 47-50 of K10A, Pins 47-54 of K10B ......................5V
Pins 39-42 of K10B ......................................................-5V
Check IC1001, IC1002 and IC1021.
2. Check that the following input signals are observed
correctly.
AV BOARD
NO PICTURE
SIGNAL K10A-pin No. K50A-pin No.
V-Sync 17-18 17-18
H-Sync 15-16 15-16
B 11-12 11-12
G 9-10 9-10
R 7-8 7-8
Video 33-34 33-34
S-C 29-30 29-30
S-Y 25-26 25-26
1. Check the signals at following test points.
- Video signal at TP208, TP218
- V-sync signal at TP7224
- H-sync signal at TP7223
MAIN BOARD
Troubleshooting