![background image](http://html1.mh-extra.com/html/canon/lv-7355j/lv-7355j_service-manual_4066764070.webp)
2) No picture from Computer source [Analog]
●
DVI-Input
• Check RGB signals at pins 35-36, 37-38 and 39-40 of K10V on the DVI Board and
K3V on the Main Board.
• Check Sync signals at pins 5-6 and 3-4 of K10W on the DVI Board and K3W on the
Main Board.
●
VGA-Input
• Check RGB signals at pins 3-4, 7-8 and 11-12 of K10T on the AV Board and K3T on
the Main Board.
• Check Sync signals at pins 15-16 and 19-20 of K10T on the AV Board and K3T on
the Main Board.
• Check RGB signals at pins 1, 3 and 5 of IC5211.
• Check RGB signals at pins 8, 10 and 12 of IC5241.
• Check Sync signals at pins 13 and 11 of IC6241.
• Check Sync signals at pins 1 and 13 of IC6261.
• Check AV/PC switching signal at pin 22 of IC5241 and pins 10 and 11 of IC6261.
AV: Low, PC: High
3) No picture from DVI source
• Check power supply voltages on the DVI board.
5VDVI on pins 39-40, 5VS on pins 35-36, 3.3VS on pins 31-32, 9VMCI on pins 35-
38, 5VD on pins 21-22 of K10W and K3W.
• Check Sync signal at pins 16 and 18 of IC8081.
• Check IC IC8001, IC7021, IC7031 and peripheral circuits.
4) No picture from both of Video and Computer sources
• Check RGB signals at test points TP52R, TP52G and TP52B.
• Check RGB signals at test points TP201R, TP201G and TP201B.
• Check HSYNC signal at test point TP205.
• Check Sync signals at test points at TP62H and TP62V.
5) No picture from all of sources
• Check RGB S&H signals at test points TP25B1, TP25B2, TP25G1, TP25G2, TP25R1
and TP25R2.
• Check NRS signals at test points TP3551.
• Check power supply circuit 15.5V and 15VL and peripheral circuit.
• Check IC IC501, IC531, IC561, IC1501, IC1531, IC1561, IC3501, IC3531, IC3561,
IC801, IC301, IC401 and peripheral circuits.
Part 4: Troubleshooting
4-5
SIGNAL
K10W/K3W
SIGNAL
K10V/K3V
SIGNAL
K10U/K3U
SIGNAL
K10T/K3T
V-Sync
3-4
B
35-36
Video
45-46
V-Sync
19-20
H-Sync
5-6
G
37-38
S-C
41-42
H-Sync
15-16
R
39-40
S-Y
39-40
B
11-12
PB
49-50
G
7-8
PR
51-52
R
3-4
Содержание LV-7355J
Страница 9: ...Part 1 General Information ...
Страница 22: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 65: ...Part 4 Troubleshooting ...
Страница 82: ...Part 4 Troubleshooting 4 17 BA7078AF Selector IC6241 CXA2101AQ RGB Matrix IC4101 ...
Страница 83: ...Part 4 Troubleshooting 4 18 CXD2064Q Digital Comb Filter IC2101 L3E01031 Level Shift IC3501 IC3531 IC3561 ...
Страница 85: ...Part 4 Troubleshooting 4 20 ML60851 USB I F IC9801 M62393 D A IC2571 ...
Страница 86: ...Part 4 Troubleshooting 4 21 TB1274AF Video Decoder IC1101 TA1318N AFC Detector IC6171 ...
Страница 87: ...Part 4 Troubleshooting 4 22 FA7612CA PWC Controller IC65A IC671 IC681 STR Z2156 Switching Controller IC631 ...
Страница 88: ...Part 5 Parts Catalog ...
Страница 89: ......
Страница 107: ...Part 6 Electrical Diagrams ...
Страница 117: ......