Cirris Signature 1000HN, User Manual

Page: 61 / 86

Section 12: Troubleshooting / General Problems with the Analyzer
1000HN User’s Guide / page 61
Problem
: Connections are not recognized by the analyzer.
Possible Causes
:
• Bad cable adapters or adapting cables.
• Bad scanner assembly.
Things to do:
1. Using the hand-held test probe as a diagnostic tool, use the sharp steel tip of the
probe to pierce the insulation on the connecting wire for the connection that is
not being recognized. The pin which is displayed by the analyzer when the insu-
lation is pierced is the pin that makes a connection to the wire. The pin that is not
displayed is the one that is open. Remove the connector and check the connector
adapter with the probe to see if the missing pin is recognized there. If it is recog-
nized at the test adapter, you may have a worn contact, or contaminants such as
solder flux on the contacts.
2. If you are using an adapting cable, move back to the test point on the adapter con-
nected to the analyzer, and see if the analyzer will recognize it there. If the ana-
lyzer recognizes the point, the adapting cable is bad. Rework the adapting cable.
3. If you are using an AUNV-64, or AHR2-64 adapter, be aware that some pins are
used to identify these adapter’s signatures. Because they are incorporated into
the adapter signature, these connections may cause test points to no longer be
recognized. If this is the case, you have miswired your connections, and you will
have to rework them.
• To isolate a problem with an AUNV adapter, remove all connections to
pin 31, 32, 33, and 34 on a 34-pin connector adapter.
• If you are using an AHR2-64 adapter, make sure there are no connec-
tions to pins 33 and 34.
• If after removing these connections you can now identify these pins
with the probe, you have found the type of miswire described above.
Rework your adapting cable.
• It is possible the adapter is bad. Check for worn connectors on the
adapter. Also check for continuity of the adapter pin on the bottom of
the adapter to the test connector on top. If you find open or worn
connections, replace the adapter.
• If you find a bad pin after all these tests, call Cirris to replace the scan-
ner assembly.
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