1.14 Fault flow chart, English
Fault flow chart, English 1.14
1.14
1.15 Fault flow chart, English
Fault flow chart, English 1.15
1.15
Fault
No sound in internal speakers
Possible causes
Camcorder mute
PCB10 – amplifier defect
PCB10 – power supply defect
PCB10 – power supply to PCB10 defect
Speaker defect
Connections to speaker
Connection from source defect
Sound mute command
Press SPEAKER1
(internal speakers)
Only TV channels
without sound?
Confirm correct
setting of TV
system
Replace
Main chassis
(Module 999)
Reestablish setup
All sources without
sound?
No sound in both
speakers?
Disconnect
PCB3P429
(camcorder)
sound OK?
Replace
PCB Camcorder
(PCB 59)
Replace
Main chassis
(Module 999)
Reconnect
PCB3P429.
PCB10P57p3 <1v
Sound mute
Confirm
supplyvoltage
PCB10 P58 p1 = -21V
PCB10 P58 p2 = +21V
OK?
Possible PCB4
failure
Check the speaker
with no sound
Measure table OK?
Replace defect
speaker
No
Yes