Grass Valley Profile XP Service Manual - Manual (Page 51)

23 July 2004 Profile XP Service Manual 51
Chapter
5
Troubleshooting timecode problems
If your timecode 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 timecode 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 several field-replaceable units that could cause video
problems depending on whether the problem is with VITC, LTC, or with timecode
burn-in on the monitor output. If the problem is with VITC, the faulty
field-replaceable unit could be one of these:
• An SDI board
• the Motherboard
• the MPEG-2 Encoder or Decoder board (PVS1000 or 2000), or Video Processor
board (PVS1100)
If the problem is with LTC, the RTS board could be at fault as well as the
Motherboard. If the problem is with timecode burn-in, the Monitor board might be
faulty.
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 video problems. Search through the symptoms in “Common setup
problems,” “Problems with video,” and “Problems with Configuration Manager.”