2.4 Fault flow chart
Fault symptom
- No sound in internal speakers
Possible cause:
- Speaker setup
- Defect PCB0, Sound output
- Defect cable W06 or W08
- Defect module 999, Main chassis
- PCB4, Main power supply defect
Press SPEAKER on
Beo4
Sound OK?
- - - - - - - -
Activate internal
speakers
Are both left/right
without sound?
Find channel in
“speakertable” and
measure speaker(s)
OK?
Measure direct on the
speaker terminals
Speaker OK?
Replace defect speaker
Replace speakerbox
internal connection
Replace Sound output
(PCB0)
Replace Main chassis
(module 999)
Camcorder mute
active?
Disconnect P32 on
PCB0
Sound OK?
Reconnect P32 on
PCB0
Check voltage on
PCB4 P2
pin & 3 +2V
Pcb4 P2
pin2&4 -2V
Replace Main chassis
(module 999)
Replace Camcorder
(PCB59)
Replace Sound output
(PCB0)
No
Yes
ABO-CENTER
v/HENRIKSENS
ELEKTRONIK
