Philips DVD634, Service Manual, Page: 21 / 54

Diagnostic Software, Trouble Shooting and Test Instructions
EN 21 DVD634 /0X1 5.
5.3.5 No Digital Audio Out
Figure 5-5 No Digital audio out
No Digital audio out
from coaxial
Check
waveform at
Pin 41 / 7101
Mpeg Board
Put the Mains switch to ON and play a
DVD disc.
Ensure that SPDIF set -up in the Setup
Menu is set to PCM.
•
Check / Replace Decoder IC 7101
NO
•
Check +5VAV supply to buffer IC
7202
•
Check / Replace buffer IC 7202
Check
waveform at
output of buffer
IC 7202
YES
•
Check continuity from output of IC
7202 to pin 3 of con 1203A
•
Check /Replace R3253,R3254 and
C2242
NO
YES
PM3380B
ch1
1
SPDIF
CL 26532068_022.eps
030702
2.00 V / DC
0.0 ns / div