![background image](http://html.mh-extra.com/html/canon/d78-5382/d78-5382_service-manual_62456070.webp)
1.3 No Sound
Check following steps.
Part 4: Troubleshooting
4-5
Check PC/AV-audio switching circuit.
Check IC001, audio-sw IC, and peripheral circuit.
PC/AV_SW5 (PC:L) signal is applied on pin 10 of IC001
through Q041. MUTE5 signal (Mute:H) is applied on pin 9
of IC001 output from pin 12 of IC1803
through IC1351,
buffer IC.
Is the audio signal
observed on the
AUDIO-OUT terminal?
Check Audio amp.and control circuit.
Check IC5001, audio-amp IC, and peripheral circuit.
MUTE5 signal (Mute:L) is applied on pin 1 of IC5001,
output from pin 12 of IC1803
through IC1351, buffer IC.
VOL_CTL signal is applied on pin 4 for volume control, sent from
pin 19 of IC3561.
Is the audio signal
observed on pin 6 of
IC5001?
Check audio output circuit.
Check speaker, connection of the terminals "K10T",
"K8F".
Yes
No
Yes
No
Summary of Contents for D78-5382
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 ...