Removing And Replacing The Front Panel Assembly - Keysight N5221A Service Manual

Repair and Replacement Procedures

Removing and Replacing the Front Panel Assembly

Removing and Replacing the Front Panel Assembly
Tools Required
• T-10 TORX driver (torque to 9 in-lb or 1.02 N.m)
• T-20 TORX driver (torque to 21 in-lb or 2.38 N.m)
• 5/16 inch open-end torque wrench (torque to 10 in-lb or 1.13 N.m)
• ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-2 for this procedure.
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
3. With a 5/16 inch torque wrench, remove all the semirigid jumpers (item
4. With a T-10 TORX driver, remove the 12 screws (item
CAUTION Before removing the front panel from the analyzer, lift and support the front of the analyzer
frame.
5. Slide the front panel over the test port connectors.
6. Disconnect the ribbon cable (item
Replacement Procedure
IMPORTANT When reconnecting the front-panel jumpers, torque the connectors to 10 in-lb.
1. Reverse the order of the removal procedure.
2. Perform the post-repair adjustments, verifications, and performance tests that pertain to this removal
procedure. Refer to Table 7-2 on page
7-8
"Removing the Covers" on page
➁
) from the sides of the frame.
③
) from the A1 front panel interface board.
7-56.
PNA Series Microwave Network Analyzers
7-6.
①
) from the front panel.
Service Guide N5222-90001
N5221A/22A