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1.2 No Picture
Check following steps.
Part 4: Troubleshooting
4-3
No picture with all of
input sources
Check signal processing stage and LCD driving stage;
Check RGB S&H signals at test points TP501B,
TP502B, TP503G, TP504G, TP505R, TP506R.
Check PSIG signals at test points TP3501 and TP3531.
Check power supply circuit 15.5V SWD and peripheral
circuit.
Check ICs IC501, IC531, IC561, IC1501, IC1531,
IC1561, IC3501, IC3531, IC401, IC301 and peripheral
circuits.
Check DVI interface stage;
Check DVI receiver, IC8001, buffer ICs IC8051, IC8061,
IC8071 and peripheral circuit.
DVI switch signal, DPC_ON (DVI: L), is output from pin
15 of IC1804 and applied to IC5331 through Q5331.
No picture with PC1[DVI
digital] input source
No picture with PC1 [DVI
analog] input source
Check PC source selecting stage;
Check IC3061, RGB buffer, and peripheral circuit on the
DVI board.
Check IC1201, PC1/PC2 RGB SW, and IC5311,
PC1/PC2 SYNC-SW and peripheral circuit.
PC1/PC2_SW5 signal (PC1: L) is applied on pin 22 of
IC1201, and pins 9, 11 of IC5311, and output from pin
16 of IC1813 through IC1351, buffer IC.
Check PC source selecting stage;
Check IC221, Sync sw, and peripheral circuit on the AV
board. Check MNTOUT_SW5 signal (PC2-Monitor-
Out:H) is applied on pin 1 of IC201 and pins 9, 10, 11 of
IC221 on the AV board and output from pin17 of IC1813
through IC1351, buffer IC.
Check IC3101, Video decoder, and IC7201, matrix and
peripheral circuit.
Check IC1201, PC1/PC2 RGB SW, and IC5311,
PC1/PC2 SYNC-SW and peripheral circuit.
PC1/PC2_SW5 signal (PC1: L) is applied on pin 22 of
IC1201, and pins 9, 11 of IC5311, and output from pin
16 of IC1813 through IC1351, buffer IC.
No picture with PC2 [VGA
analog] input source
Yes
Yes
Yes
Yes
No
No
No
No
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Summary of Contents for LV-5200U
Page 2: ...CANON Power Projector LV 5200U D78 5382 LV 5200E D78 5383 SERVICE SMANUAL ...
Page 9: ...Part 1 General Information ...
Page 25: ...Part 2 Repair Information ...
Page 45: ...Part 3 Adjustment ...
Page 65: ...Part 4 Troubleshooting ...
Page 84: ...Part 4 Troubleshooting 4 19 AD9884AKS A D IC8201 AN5870SB RGB SW IC5201 ...
Page 88: ...Part 4 Troubleshooting 4 23 LA7217 Sync Separator IC5361 M62392 D A IC3561 ...
Page 89: ...Part 4 Troubleshooting 4 24 M62393 D A IC281 IC7801 NJM2284M Switch IC2101 ...
Page 91: ...Part 4 Troubleshooting 4 26 VPC3230D Video Decoder IC3101 ...
Page 92: ...Part 5 Parts Catalog ...
Page 94: ......
Page 101: ...45 45 45 45 52 52 a 52 Page 4 CANON REF No LV 5200U D78 5382 LV 5200E D78 5383 ...
Page 107: ...U 1 U 2 V 1 W X Y Z 1 Page 7 Z 2 CANON REF No LV 5200U D78 5382 LV 5200E D78 5383 ...
Page 111: ...Part 6 Electrical Diagrams ...