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HP 8114A Service Guide
Power-Up Selftest
Extended Selftest
Confidence Level
Microprocessor Selftest Failure Messages
The HP 8114A Selftest
power-up. If this test fails you
specific error messages resulting from the test. If the list is longer
than a single screen, use the cursor keys to scroll the list.
Note that a long error list can result from a single initial error.
Therefore, begin to solve problems starting with the first message in
the list and after the problem is cleared run Selftest again.
The extended Selftest tests all installed boards.
Start the extended selftest on the CONFIG screen:
1. Use the Knob to select
2 .
Press (ENTER].
If the Selftest fails, a flashing
list, of error messages.
It is not possible to give a Confidence Level figure for the Selftests.
After completion of Performance tests a confidence level of 96% can
be assumed. This is because not all possible settings and functions are
checked by the Performance Tests.
The following is a list of the Microprocessor Board error messages and
their meanings. The first part of the list shows the messages as they
are displayed on the instrument. The HP-IB messges are identical, but
-330 Self-test failed
with the message:
Hardware failure on the Microprocessor Board
Flash EPROMs have failed test.
ROM test failed
RAM test failed
Crystal Reference for UP lost
Loss of crystal reference. The VCO is running
at approximately half normal operating speed,
determined by an internal voltage reference for
the VCO, instead of the external crystal frequency
VCO for UP has not locked
VCO is enabled but has not yet locked. Normally
the VCO locks-on to the required frequency
Unexpected Reset of UP
Reset was caused by one of the following:
System protection submodule halt monitor
n
loss of frequency reference to clock submodule
n
checks
only the Microprocessor Board at
can
press (HELPI to see a list of the
Signal
E
is displayed. Press (HELP) to see the
added in front.
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Troubleshooting
