142 Keysight FieldFox Handheld Analyzers Service Guide
Repair and Replacement Procedures
Removing and Replacing the Measurement Group Assemblies
7-
Replacing the 2.4mm Test Port Connector
(N995xA, N996xA)
1. Separate the front and rear cases. See “Separating the Front and Rear
Cases” on page 115.
2. Remove all measurement group assemblies as one unit. Refer to
“Removing All Measurement Group Assemblies as One Unit” on page 136.
3. Remove the RF top assembly. Refer to “Removing and replacing the RF
Top Panel Assembly” on page 138.
4. The 2.4mm test port connector can now be replaced by disassembling the
nuts as below (refer to Figure 7-25):
a. Use break-over wrench, (PN: 8710-2792) to loosen front jam nut.
b. Use in-line torque screw driver with 5/16" deep socket (PN:
8710-2794) to loosen launch nut.
c. Use mini break-over wrench (PN: 8710-2793) to loosen rear jam nut.
5. Lift the 2.4mm test port connector upwards and out of the RF bottom
shield.
6. Position the new 2.4mm test port connector onto the RF board and ensure
restrainer is fully seated into pocket on shield flange. Follow the steps
below (refer to Figure 7-25):
a. Use mini break-over wrench (PN: 8710-2793) to secure rear jam nut
to 16 ozf-in.
b. Use in-line torque screw driver with 5/16" deep socket (PN:
8710-2794) to secure launch nut to 10 lbf-in.
c. Use break-over wrench, (PN: 8710-2792) to secure front jam nut to
35 lbf-in.
7. Install a new O-ring gasket over the new 2.4mm connector.
8. Continue with step 5 of the Removing and replacing the RF Top Panel
Assembly procedure on page 138.
9. Perform the steps under “Final Assembly Procedure” on page 164.
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