Audio International, Inc.
AV-4595-0x-x Installation & Operation
Document #540158, Rev IR, 10/1999
Page 15 of 18
Many problems can be isolated with the following general techniques:
•
Verify power to the unit – r28 VDC power is applied to the proper pins
on the unit. Use a voltmeter to verify correct level.
•
Reset – remove power from the unit for at least one minute and reapply power to
verify that the problem still exists.
•
Check connections and wiring harnesses – recheck all connections to the unit for
security. Check all harness runs for possible pinching. Recheck all pin outs for
application accuracy.
•
Isolation – general troubleshooting procedures involve isolating the problem.
Attempt functions at different switch points. Try different source equipment.
Once the problem is isolated to its lowest level, study all documentation on this
unit and the aircraft’s entertainment system in an attempt to determine the
cause.
5.3 Troubleshooting
Chart
Problem Possible
Cause
Solution
Audio is not
present in the
speakers or
headphones
½
Audio source not selected or
activated
½
Unit is not properly connected to
the audio source(s)
½
Circuit breaker has been tripped
½
There has been a power failure
while the respective entertainment
unit was operating
½
Amplifier Failure
½
Speaker or Headphone Failure
½
AV-4595 Failure
•
Ensure an active audio source
input is present
•
Ensure the unit has been properly
connected to the audio source(s)
•
Reset circuit breaker
•
Refer to the entertainment unit
operation manual to re-activate
the corresponding unit
•
Replace bad AV-4595
Video is not
present on any
monitors
½
Video source not selected or
activated
½
Unit is improperly connected to the
video source
½
Monitor Failure
½
AV-4595 Failure
•
Ensure an active audio source
input is present
•
Verify unit is properly connected
to the video source
•
Replace bad AV-4595, ONLY if
more than one port is bad
Problem
selecting audio
or video
sources
½
Audio, video, switch, or AV-4595
is improperly connected to the
RS-485 data bus
½
Device ID pins improperly
connected
½
ID configuration wrong
•
Check data bus and the
audio/video unit for proper
connections
•
Verify proper device ID pin
connections on units
•
Confirm correct ID number
through “AVSetup Utility”
6.0 Specifications
