Agilent Technologies 89410A Service Manual page 65

7
Check the probe power fuse on the A95 Main Power Supply assembly.
a Set the power switch to off ( O ).
b
Turn the analyzer upside down.
c
Remove the bottom cover.
d
Wait five minutes to allow time for the power supply capacitors to
discharge.
e Remove the black power supply shield.
f
Measure the resistance across F1.
g
If the resistance is 0
faulty.
h If the resistance was greater than 0
Ω
, the A92 Probe Power assembly is probably
Ω
, replace the fuse.
Troubleshooting the Analyzer
To perform self tests
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