Grass Valley Profile XP Service Manual - Manual (Page 45)

23 July 2004 Profile XP Service Manual 45
Chapter
4
Troubleshooting audio problems
If your audio problem is a result of equipment failure, your first indication might be
a message in the NetCentral system. The tables of NetCentral messages list the
Warning and Alarm messages you might see, with some possible causes and
solutions.
When you are troubleshooting audio problems and you have determined that the
problem is hardware related, remember that you are trying isolate the fault to a
field-replaceable unit. There are four field-replaceable units that could cause video
problems:
• An SDI board (if you are working with embedded audio)
• the Motherboard
• An Audio board
• An audio interface (a PAC216 Audio Chassis or BNC/XLR216 breakout box)
In general, you can verify or rule out hardware problems by using the Profile XP
diagnostics described in Appendix A, Diagnostic Tools. If the diagnostics indicate
that a board is defective, replace that board.
In many cases an improper configuration setting or other change in the system setup
can result in audio problems. Search through the problems listed in “Correcting
common audio problems” later in this chapter.
The System Guide referred to in the tables in this chapter is the Profile XP System
Guide.
Checking NetCentral messages
These are Warning and Alarm messages you might see from the NetCentral system.
Audio problems related to SDI board
Problem Possible Causes Corrective Action
The Profile has detected frequent
audio sync errors (more than 10 times
an hour) while extracting embedded
audio from its SDI input on slot N.
This could result in recording where
the audio and video are out of sync. Bad signal from source. • Check the SDI video
input(s) for bad signal
sources or cabling.
• Try another source or
a known good source.
• Replace the board.
• Contact Support.
The Profile has detected frequent
errors (more than 10 times an hour)
while extracting embedded audio
from an SDI input on slot J-N.