Bang & Olufsen BeoPlay V1-40, Service Manual, Page: 25 / 74

Fault flow chart 3.9
Fault symptom:
Cannot switch to standby
Possible causes:
Remote Control
PCB58, IR Receiver & Room Aware.
PCB01, Video Engine
Is remote control
OK?
Disconnect mains to
television.
Wait 60 sec.
Connect mains to
television.
Does problem
persist?
Replace remote
control
Product OK
IR Receiver receives
signals from remote
control
Using an
oscilloscope confirm
that pulses are seen
on PCB01, P101 pin
4 for each use of
the remote control
OK?
Check cable
connection
between PCB01,
P101 and PCB58, P1
OK?
Replace cable or
re-establish
connection
Replace PCB01,
Video Engine
Confirm voltage on
PCB01, P101 pin 7
or PCB58, P1 pin 7
12V_RA
= +12V
OK?
Replace PCB58, IR
Receiver & Room
Awareness
Replace PCB01,
Video Engine
Confirm voltage on
PCB01, P101 pin 3
or PCB58, P1 pin 3
5V_SB_F
= +5V
OK?
No
Yes
Hint:
Measurement plugs,
pins and test points;
see page 3.17