From previous
page
Part 4: Troubleshooting
4-4
Check AV source selecting stage;
Check S-video signal (Y/C) on the AV board.
S-C signal is applied to pin 43 of IC3101<Video Decoder>,
and S-Y signal is applied on pin 44 of IC3101.
S_SW signal (S-VIDEO: L) is input to pin 6 of IC2321<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 17, 18, 19 of
IC3101<Video Decoder>.
The component mode is selected by the PW_SCL2_5 and
PW_SDA2_5 signal applied to pins 13 and 14 of IC3101.
No picture with
Component input source
Check AV source selecting stage;
Check composite video signal (Video) on the AV board.
Check IC2101<Y/C Separation> and IC3101<Video Decoder>
and peripheral circuit.
VIDEO_CR, VIDEO_CB, VIDEO_Y, AV_HSYNC and
AV_VSYNC signals are output from pin 23, 22,21, 9 and 4 of
IC3101.
COMPO5 signal (PC: H) is output from pin 14 of IC2323<D/A>
and applied to pin 26 of IC5201 through IC5371<Buffer IC>.
No picture with video
input source
No
Yes
Yes
Yes
No
Summary of Contents for D78-5452
Page 9: ...Part 1 General Information ...
Page 25: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 66: ...Part 4 Troubleshooting ...
Page 78: ...Part 4 Troubleshooting 4 12 AN5870 RGB SYNC SW IC1201 IC5201 BA7078 Sync Separator IC5341 ...
Page 80: ...Part 4 Troubleshooting 4 14 CXD3536 LCD Driver IC401 FA5502 P F Control IC621 ...
Page 81: ...Part 4 Troubleshooting 4 15 M62392 M62393 D A IC6271 IC281 ML60851 USB Driver IC9801 ...
Page 83: ...Part 4 Troubleshooting 4 17 TC90A69F Y C Separator IC2101 ...
Page 84: ...Part 5 Parts Catalog ...
Page 85: ......
Page 99: ...Part 6 Electrical Diagrams ...