Service manual

Agilent 8494A/B, 8495A/B, 8496A/B Operating And Service Manual 11
Service
Service
Troubleshooting Troubleshooting consists of performing the “Operator’s Check” on page 8.If
the instrument does not perform within limits, return the instrument to
Agilent Technologies.
Repair The only recommended field repair is replacing the outer connector shell for
the Option 001 and 003, or replacing the center contact in the 7 mm
connector. For any other repair, return the entire instrument to Agilent
Technologies.
Replacing the 7 mm Connector Center Conductor Contact
Through wear or damage, the contact in the 7 mm center conductor may
need replacement. This contact is a small four-pronged contact which snaps
into a recess in the center conductor. With a magnifying glass, examine the
contact for the necessary outward spring action by carefully pushing it in.
CAUTION Do not remove this contact for inspection. It may be damaged by removal.
The prongs of the contact should be free from burrs or wear. If the contact is
removed, do not reuse it. Order contact as Amphenol part number 131-129
*
or Agilent part number 1250-0907.
If this contact needs replacement, proceed as follows:
1. Place the instrument so the connector faces down.
2. Tap the connector lightly. The contact should now protrude slightly.
Insert the centering pin of the contact extractor, p/n 5060-0370, with the
jaws open.
3. Allow the jaws of the tool used to close and pull straight back from the
connector without twisting.
4. Snap in a new contact by pushing it in place. Test the action of the new
contact by pushing it in. It should spring out again when released.
* Amphenol RF Division, Danbury, CT.