General Maintenance
Troubleshooting
The procedures in this section will help you trace the root cause of a problem back
to one of the replaceable modules. In general, this is a board-level replac ement
but there are a few components on some boards that are replaceable.
WARNING. Before performing this or any other procedure in this manual, read the
General Saf
ety Summary and Service Safety Summary found at the beginning of
this manual.
To prevent possible injury to service personnel or damage to electrical co
mponent,
refer on how to prevent ESD. (See page 4 -1.).
Getting Started
This procedure consists of two main sections: the first section contain
sthe
Symptoms and Causes table, and the second section contains a set of Detailed
Troubleshooting Procedures. The table lists common problems a nd should help
you identify the problem or it may d irect you to one of the detailed troubleshooting
procedures in the second section. If you do not find your instrument’s problem in
the table, or if no specific problem was reported by the user, then follow the steps
in the Unknown Problem section in the Symptoms and Causes table.
Waveform monitors of the WFM6000 and WFM7000 series are highly
configurable 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 first step is to
recall the Factory Presets
To properly test a waveform monitor you must have appropriate signal sources.
Depen
ding 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
Display Assembly (LCD, Backlight inverter, Front Panel board with buttons,
LEDs, and knobs
Main b
oard
Mezzanine SDI I/O board (not present if Option EYE/PHY or 3G is installed)
WFM6120, WFM7020, and WFM7120 Waveform Monitors Service Manual 4–5
To Next Page
Loading...
Need help?
General
