Sony RMT-D254A Service Manual page 68

No digital audio out
Check the digital
No
audio
setting
Yes
Proper
signal input on
D3 0P, MIC 1
Yes
Proper signal on 8AL 13
Yes
Check peripheral parts of
coaxial output terminal
Refer to user manual
Check VCC and peripheral
No
part of MIC1
No
Replace 8AL 13
6-5