General Maintenance
Getting Started
This procedure consists of two main sections: the
fi
rst section contains the
Symptoms and Causes
table, and the second section contains a set of
Detailed
Troubleshooting Procedures
. The table lists common problems and should help
you identify the problem or it may direct you to one of the detailed troubleshooting
procedures in the second section. If you do not
fi
nd your instrument’s problem in
the table, or if no speci
fi
c problem was reported by the user, then follow the steps
in the
Unknown Problem
section in the Symptoms and Causes table.
The WVR8200 and WVR8300 Waveform Rasterizers are highly con
fi
gurable and
behavior is sometimes complex. Before troubleshooting in-depth, verify that:
The installed options are as expected. See CONFIG > Utilities > View
Instrument Options
The current settings support the expected behavior. A good
fi
rst step is to
recall the Factory Presets. To do this, press PRESET > Recall Preset > Recall
Factory Preset.
To properly test this instrument, you must have a known good XGA monitor and
appropriate signal sources. Depending on what portion of the instrument you are
testing, this might include Composite Video, Serial Digital Video, Analog Audio,
or Digital Audio. In some cases, you may also need receivers or an oscilloscope
to check outputs.
These instruments consist of several boards and major components. Some of these
are optional, as shown below. The objective of this troubleshooting guide is to
isolate a problem to a module or board so it can be replaced. This guide does not
provide information to troubleshoot to the component level.
Standard boards and modules:
Power Supply
Front Panel board with buttons, LEDs, and knobs
Main board
Optional boards:
SDI input, for instruments without Option EYE or PHY
Eye, for Option EYE or PHY
Composite input, for Option CPS
Audio, for Option AD and DPE
Dolby Decoder module, for Option DPE
WVR8200 and WVR8300 Waveform Rasterizers Service Manual
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