Bang & Olufsen BeoLab 9 6217 Service Manual page 9

Select e.g. Radio or
CD on the
Audiomaster, and
Confirm 5V on PCB4,
press GO on Beo4
Power Supply P14 pin
Does BeoLab 9 turn
on (Green light in
LED)
Go to
Confirm -12V on
next page
PCB4, Power Supply
Confirm 12V on
PCB4, Power Supply
Confirm 44V on PCB4,
Power Supply P15
Confirm -44V on
PCB4, Power Supply
Confirm 66V on
PCB4, Power Supply
Confirm approx 4.7V
on PCB4, Power
Supply P14 pin 9
Replace Module 999,
Check Power Link
cable and
Audiomaster.
Reconnect/replace if
nescessarry.
7
(This is not covered in
this fault flow chart)
Replace PCB4, Power
Supply
P14 pin 
Replace PCB4, Power
Supply
P14 pin 5
Replace PCB4, Power
Supply
pin 4
Replace PCB4, Power
Supply
P15 pin 5
Replace PCB4, Power
Supply
P15 pin 6
Replace PCB4, Power
Supply
Amplifier
Fault flow chart 2.
No
Yes