No Sound From Speaker In A Wireless Setup - Bang & Olufsen BeoLab 17 Service Manual

2.10 Fault flow chart
Fault symptom:

No sound from speaker in a wireless setup

Possible causes:
Defective PCB04, Power Supply
Defective PCB30, Digital Sound Engine
Defective PCB35, Amplifier
Defective PCB89, Wireless Power Link Rx
Incorrect role switch setting
Confirm that the
role switch setting
is correct
OK?
Reset the speaker
and set up the
wireless connection
again.
OK?
**
Set BeoLab 17 in service position 2
for measuring on modules. See
replacement of modules page 4.8
Set role switch
Disconnect W4
** Confirm 28V at
from PCB35, P3.
PCB04, P4 pin 1, 2
and -28V at PCB04,
Confirm 28V at
P4 pin 7, 8
PCB04, P4 pin 1, 2
and -28V at PCB04,
OK?
Replace PCB35,
Use ServiceTool to
calibrate the new
Confirm 1.6V at
Connect
PCB89, P7 pin 22
ServiceTool and
and 3.3V at PCB89,
read out Error Log.
Any suggestions?
Replace the
Replace PCB89,
suspected module
Wireless Power
related to the
Error Log
Confirm 3V at
PCB04, P3 pin 3
OK?
P4 pin 7, 8
OK?
Replace PCB04,
Power Supply
Amplifier
module
Replace PCB30,
Digital Sound
P7 pin 24
Engine
OK?
Link Rx
No
Yes
Repair/replace
connection
Check connection
between PCB04,
Power Supply and
PCB30, Digital
Sound Engine
OK?
Replace PCB30,
Digital Sound
Engine
Survey of plugs and pins - see page 2.13