Ihse 474 Series - Digital Audio

Troubleshooting
2014-04-15 79
8.6 Digital Audio
CPU Module CON Module
1
1
Rear View Rear View
Diagnosis Possible Reason Measure
No audio connection to
CPU / audio source
 Connect digital audio source.
 Check connection of audio cable.
CPU Unit:
LED 1 red
No signal  Switch digital audio source on.
 Activate digital output at CPU /
audio source.
No audio connection to
audio sink
(e.g. speakers)
 Connect digital audio sink.
 Check connection of audio cable.
CON Unit:
LED 1 red
No signal  Check signal at CPU Unit.
No signal /
LEDs 1 OK
Digital Silence at active
audio source
 Check LEDs at CPU Unit.
 Check audio format.
 Change audio input.
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