HD3G7 module troubleshooting
Swap modules
The interface b
etween the mainframe and the module may make it difficult to
determine whether the problem lies in the mainframe or in the module. Trying
the HD3G7 module in another slot or in a known good mainframe is a simple
way to quickly isolate which is at fault.
1. Try the HD3G7 module in a known good mainframe, or in another slot where
a DVG7, BG7, or AVG7 module is known to work correctly. These modules
usethesameclocksandframepulses.Ifthe HD3G7 module works correctly
here, replace or repair the original mainframe.
2. Try another HD3G 7 module (or a D VG7, BG7, or AVG7 module, all of
which use the same clocks and frame pulses) in the same mainframe and
slot. If a
nother module works correctly in the original slot, then replace the
HD3G7 module.
11–20 TG8000 Multiformat Test Signal Generator Service Manual
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