Bang & Olufsen DVD 2, Service Manual

Page: 27 / 70

Fault flow chart 3.5
Video Fault symptom:
No picture
Bad picture quality (pixel error)
Picture drop out
Possible causes:
Defective PCB
Poor source/media
Cable fault
Software fault
Check video signal
path from tuner to
EXT . Confirm picture
out at PCB0, Scart ,
pin 9
OK?
No
Yes
Replace PCB0,
Analog
Sound OK?
Replace PCB02,
Digital
Refer to ‘Adjustments’
when replacing
Replace PCB02,
Digital
Refer to ‘Adjustments’
when replacing
OK?
Play back DVD video
from DVD Drive
Sound OK?
Replace PCB0,
Analog
Confirm that video
quality is OK (no pixel
error) and without
dropouts
OK?
Replace PCB02,
Digital
Refer to ‘Adjustments’
when replacing
Check IEEE cable,
replace with new
cable
OK?
Confirm that video is
OK when using DV-
input
OK?
Update to latest
version. Software can
be downloaded at
Bang & Olufsen Retail
system under the
BeoWise section
Verify that the
software version is the
latest available.
Refer to ‘Adjustments’
for readout
OK?
Replace PCB0,
Analog
Replace PCB02,
Digital
Refer to ‘Adjustments’
when replacing
Playback DVD video
and confirm picture
quality is OK
OK?
Check the disc for dirt,
fingerprints and
scratches
Disc OK?
Replace DVD Drive