Bang & Olufsen DVD 2, Service Manual

Page: 18 / 70

3.6 Fault flow chart
Confirm:
+5V on
PCB04 J5 pin 4
+2V on PCB04 J5
pin
OK?
Fault symptom:
DVD 2 does not complete startup sequence
STBY. LED (red -> green)
Display shows
➀
or
➁
➀
‘BUSY’ for about 45 sec., then ‘STARTING’
for about 5 sec., then ‘CLOCK’
➁
‘STARTING’ and HDD reboots for every 45 sec.
Possible causes:
Defective DVD ‘DVD Drive’
Defective HDD
Defective PCB
Replace DVD Drive
Start HyperTerminal
(Refer to
Service Mode for use)
Confirm
communication with
DVD Drive by typing:
DS:>900 at prompt
Test OK?
Replace PCB04,
Power Supply
Replace DVD Drive
No
Yes
Confirm ‘open/close’
function by typing:
DS:>904 at prompt
(open)
DS:>905 at prompt
(close)
Test OK?
Replace HDD
(Check cables W &
W3 before replacing)
Refer to ‘Adjustments’
when replacing
Replace PCB0, HDMI
Confirm
communication with
PCB0, by typing:
DS:>50 at prompt
Test OK?
Confirm HDD
diagnostic test by
typing:
DS:>205 at prompt
Test OK?
Perform an ‘image download’ from DVD
format disc, by typing:
DS:>207 at prompt
Refer to ‘Adjustments’ for further
information
(Formatting a new HDD)
WARNING!: All recording data will be lost
Replace HDD
(Check cables W &
W3 before replacing)
Refer to ‘Adjustments’
when replacing
Confirm
communication with
HDD by typing:
DS:>200 at prompt
Test OK?
Replace PCB04,
Power Supply
Check HDD
Confirm:
+5V on PCB04 J4
pin 4
+2V on PCB04 J4
pin
OK?
See next page