Philips DVD640 Service Manual page 18

EN 18 5. DVD640 /xx1
5.3.2 No Picture
No Picture Sound and FTD
display OK
Put the Mains switch to ON
and play a DVD disc
Check digital
YUV input to
Video DAC
IC7301
YES
Check Video
output from
Video DAC IC
7301 input
YES
•
Check +5VAV to the Video buffer
circuitry
•
Check / Replace the components in the
Video buffer circuitry.
Diagnostic Software, Trouble Shooting and Test Instructions
•
Check YUV data lines connection
from processor IC 7101 to Video DAC
NO
IC7301
•
Check / Replace processor IC 7101
•
Check +5V supply at pin 36/41/46 of
Video DAC IC 7301
NO
•
Check / Replace coil 5301
•
Check /Replace Video DAC IC 7301
Figure 5-2 No Picture
DIG YUV
PM3380B
ch1
1
1
1.00V / DC
20ns / div
CL 26532068_026.eps
040702