Part 4: Troubleshooting
4-8
From previous
page
Check AV source selecting stage;
Check S-video signal (Y/C) on the AV board.
S-C signal is applied to pin 71 of IC101<Video Decoder>, and
S-Y signal is applied on pin 73 of IC101.
S_SW signal (S-VIDEO:L) is input to pin 9 of IC1811<I/O>.
No picture with S-VIDEO
input source
Check AV source selecting stage;
Check component signal (Y/Cr,Pr/Cb,Pb) on the AV board.
The component signals are applied to pins 1, 2, 3 of
IC101<Video Decoder>.
The component mode is selected by the M_SCLK1 and
M_SDA1 signal applied to pins 13 and 14 of IC101.
No picture with
Component input source
Check AV source selecting stage;
Check composite video signal (Video) on the AV board and
TP103 on the main board.
Check IC101<Video Decoder> and peripheral circuit.
H-Sync signal is output from pin 55 of IC101. V-sync signal is
output from pin 57 of IC101.
No picture with video
input source
No
Yes
Yes
Yes
No
Содержание LV-X4U
Страница 2: ...CANON Multimedia Projector LV X4U D78 5532 LV X4E D78 5533 SERVICE SMANUAL ...
Страница 9: ...Part 1 General Information ...
Страница 26: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 62: ...Part 4 Troubleshooting ...
Страница 79: ...Part 4 Troubleshooting 4 17 AN5870SB RGB SYNC SW IC5201 LM4889 Audio Amplifier IC5031 ...
Страница 81: ...Part 4 Troubleshooting 4 19 FA5502 P F Control IC621 VPC3230D Video Decoder IC101 ...
Страница 82: ...Part 4 Troubleshooting 4 20 L3E07070 Signal Processor for TFT LCD IC401 NJW1141 Audio Selector IC5001 ...
Страница 83: ...Part 4 Troubleshooting 4 21 STR Z2156A Power Switching Control IC631 PW168A Scaler Main CPU IC301 ...
Страница 84: ...Part 4 Troubleshooting 4 22 TA1370FG Sync Separator Frequency Counter IC5302 ...
Страница 85: ...Part 5 Parts Catalog ...
Страница 86: ......
Страница 94: ......
Страница 96: ...V 1 U 2 U 1 V 2 Z 1 Z 2 X Y W Accessories Page 5 CANON LV X4J LV X4U LV X4E REF NO D78 5531 D78 5532 D78 5533 ...
Страница 100: ...Part 6 Electrical Diagrams ...