Agilent Technologies 89410A Service Manual page 69

2
Repeat the sample RAM self test without the Digital Source assembly.
a
Set the power switch to off ( O ).
b Pull the A30 Digital Source assembly out of the card nest about 1
inch.
c
Set the power switch to on ( l ).
d
When the power-up tests are finished, press the following keys:
]
[System Utility
[
auto cal off]
[more cal setup ]
[ auto zero cal off]
]
[Return
[ ]
more
[ ]
diagnostics
[
service functions]
1125
[ enter ]
[ ]
test log
[ ]
Return
[ ]
functional tests
[ sample RAM ]
e
If the sample RAM self test fails or aborts, the A55/A56 Sample
RAM assembly is probably faulty.
f If the sample RAM self test passes, the A30 Digital Source
assembly is probably faulty.
Troubleshooting the Analyzer
To troubleshoot self-test lockup failures
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