Grass Valley Profile XP Service Manual - Manual (Page 39)

23 July 2004 Profile XP Service Manual 39
Chapter
3
Troubleshooting video problems
If your video 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 video 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:
• An SDI or HD SDI board, a Video Monitor board, or the SDTI board
• the Motherboard
• the MPEG-2 Encoder or Decoder board (PVS1000 or 2000), or the Video
Processor board (PVS1100)
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 problems listed in “Correcting
common setup problems” and “Correcting common video 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.
The tables present the messages that appear as a result of some fault condition in the
SDI board, MPEG-2 Decoder and Encoder boards, or Video Processor board.
SDI problems
Problem Possible Causes Corrective Action
Video is not present at SDI input
N. Cable disconnected or damaged. Reconnect cable, after repairs if
necessary.
Signal source interrupted. Check that signal is available
from source.
SDI digital signal processor N
has failed. Defective board. Do one or more of the following:
• Run Profile XP
diagnostics to verify that
the board has failed.
• Replace the board.
• If the problem persists,
contact Support.