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Troubleshooting the Analyzer
To troubleshoot sync out and parallel port failures
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 (
≥-20 V) is connected to this output.
1 Set the power switch to off ( O ).
2 Remove the screws on each side of cover number 4.
3 Remove the A30 Digital Source assembly attached to cover number 4.
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.
5 If the resistance of both fuses is 0
Ω, the A30 Digital Source is probably
faulty.
6 If the resistance of a fuse did not measure 0
Ω, replace the fuse.
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