Bang & Olufsen BeoLab 17, Service Manual, Page: 17 / 72

Fault flow chart 2.11
Survey of plugs and pins - see page 2.13
Fault symptom:
The signal for wireless connection is low
Possible causes:
Defective PCB30, Digital Sound Engine
Defective PCB89, Wireless Power Link Rx
Defective Wireless Antenna
Interference from other wireless systems
Distance to transmitter too long (out of range)
Reset the speaker
and set up the
wireless connection
again
OK?
No
The distance must
not exeed 12 m.
Reposition either
transmitter or
speaker
Remove obstacles
to have
line-of-sight
Tip
Use Wi-Spy (Wi-Spy DBx + Chanalyzer Pro)
to visualize which 5 GHz channels are used
and to see if there are other wireless systems
in the area, that could cause
interference problems.
Check connections
between PCB89,
Wireless Power Link
Rx and the 4
Wireless Antennas
OK?
Repair/replace
connection
Replace Wireless
Antenna one by
one
Move the speaker
as close to the
transmitter as
possible
OK?
Yes
** Confirm 1.6V at
PCB89, P7 pin 22
and 3.3V at PCB89,
P7 pin 24
OK?
Replace PCB89,
Wireless Power
Link Rx
Replace PCB30,
Digital Sound
Engine
Confirm that the distance
between the transmitter and
the speaker is less than the
recommended 12 m
OK?
Suspected obstacles between
transmitter and speaker.
Is there line-of-sight ?
**
Set BeoLab 17 in service position 2
for measuring on modules. See
replacement of modules page 4.8