If The Fault Is Intermittent; Repeat Test Function - HP 8753E Service Manual

If the Fault Is Intermittent

Repeat Test Function

If the failure is intermittent, do the following:
1. Press (s) ~~~~~,~~ ~~~~~~~~~~~~ .m!&g.: @g to turn on the
repeat function.
3. Select the test desired and press ~~~~~
Press any key to stop the function. The test repeat function is explained in
4.
Chapter 10, "Service Key Menus and Error Messages n
If you have performed "Step 3. Troubleshooting HP-B3 Systems" in Chapter 4,
"Start Troubleshooting Here," and you suspect there is an HP-IB problem in the
analyzer, perform the following test. It checks the internal communication path
between the A9 CPU and the Al6 rear panel. It does not check the HP-IB paths
external to the instrument.
• If the analyzer fails the test, the problem is likely to be the Al6 rear panel.
If the analyzer passes the test, it indicates that the A9 CPU can communicate
q
with the Al6 rear panel with a 50% confidence level. There is a good chance
that the Al6 rear panel is working. This is because internal bus lines have
been tested between the A9 CPU and A16, and HP-IB signal paths are not
checked external to the analyzer.
Digital Control Troubleshooting