Pioneer PDP-42A3HD Service Manual page 99

5
A/V Inspection
No digital audio output
Preliminary Checkpoints
If the SPDIF output is not working while the system is normal (Including MPEG
play and A/V output), check for any problems with the SPDIF output of CPU.
Waveform 13
< Waveform 13 >
T22
5
6
No IEC958 Digital Output
Check the IEC958 output
signal J5 of U2
OK
Check for other
defective modes
PDP-42A3HD
6
7
NG
Check the path between
CPU and IEC958 line
(Incorrect insertion, poor soldering,
short circuits, damage, etc.)
7
8
A
B
C
D
E
F
T22
99
8