To Troubleshoot Sync Out And Parallel Port Failures - Agilent Technologies 89410A Service Manual

To troubleshoot sync out and parallel port failures

Use this test to determine if the fuses for the parallel port and sync out
are failing before replacing the A30 Digital Source assembly. The sync
out fuse will fail if an input signal (
1
2
3
4
5
6
Set the power switch to off ( O ).
Remove the screws on each side of cover number 4.
Remove the A30 Digital Source assembly attached to cover number 4.
Using a multimeter, measure the resistance across F1 and across F2.
The A30 F1 fuse is for sync out and the A30 F2 fuse is for the parallel
port.
If the resistance of both fuses is 0
faulty.
If the resistance of a fuse did not measure 0
Troubleshooting the Analyzer
To troubleshoot sync out and parallel port failures
≥
-20 V) is connected to this output.
Ω
, the A30 Digital Source is probably
Ω
, replace the fuse.
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