Bang & Olufsen DVD 2, Service Manual

Page: 16 / 70

3.4 Fault flow chart
From previous
page
Start HyperTerminal
(Refer to Service Mode for use)
Is HyperTerm promt OK?
Replace PCB0,
Analog
HyperTerm OK?
Reconnect/Replace
cable W6
Replace PCB02,
Digital
HyperTerm OK?
Go to next
page
No
Yes
Confirm:
3.3V Stby. on PCB0, P932 pin 5
5V Stby. on PCB0, P932 pin 3
2V Stby. on PCB0, P932 pin
OK?
Confirm:
3.3V on PCB03, P500 pin , 2, 3, 4
5V on PCB02, P500 pin 9
-5V on PCB02, P500 pin 2
OK?
Replace PCB4,
Keyboard
HyperTerm OK?
Disconnect PCB0,
HDMI
HyperTerm OK?
Replace PCB0,
HDMI
Is DVD 2 OK?
Otherwise start at the
beginning with the
new PCB
Is DVD 2 OK?
Otherwise start at the
beginning with the
new PCB
Is DVD 2 OK?
Otherwise start at the
beginning with the
new PCB
Is DVD 2 OK?
Otherwise start at the
beginning with the
new PCB
Reconnect/Replace
cable W0