Agilent Technologies 5071A manual A9 Diagnostic Tree A/M Subsection 5.0 A9 Mon Signal Test

Assembly-Level Service

Service

A9 Diagnostic Tree (A/M Subsection 4)

3.4.5.0A9 Mon Signal Test

Any TCO Option: This procedure is deleted.

3.4.6.0A9 J4 80-MHz Signal Test

Any TCO Option: This procedure is deleted.

Any TCO Option: The following procedure is added:

4.4.4.1 A9-to-Chassis TCO Option signal Interconnect Test

If one or more of the four rear-panel telecommunications outputs are absent or operating out of specification, use the following procedure to isolate the fault.

1Remove instrument power.

2Carefully remove the five (or six for a differential framed output) telecomm signal SMB cable connectors (Note their locations first.) from J6, J7, J8, (J9 - used only for options 104, 105, 220, 221, and 222), J10, and J11 on A9.

3Verify continuity and rule out short-to-ground for all five cables and their corresponding rear-panel input and outputs.

4Reconnect the verified cables and connectors.

QUESTION: Are any of the five SMB-to-BNC cable assemblies open or shorted?

If Yes: Replace the cable assembly as required and retest.

If No: Reapply instrument power, retest A9 TCO input/outputs, and replace A9 if any TCO signal output fault persists.

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