Removing And Replacing The Fans - Keysight N5224A Service Manual

Repair and Replacement Procedures

Removing and Replacing the Fans

Removing and Replacing the Fans
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)
• Pozidriv screw driver
• 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 7-25 for this procedure.
1. Disconnect the power cord.
2. Remove the outer and inner covers. Refer to
3. Remove the front panel assembly. Refer to
7-8.
4. Remove the power supply bracket. It is not necessary to remove the entire power supply, just the power
supply bracket. Refer to
5. Remove screws (item
the chassis.
6. Remove three screws (item
7. Raise the fan bracket out of both sides in the analyzer just enough to access the fan cables. Disconnect
the fan cables from the A18 system motherboard connectors (item
8. Remove the fan brackets and fans from the analyzer.
9. To remove a fan or fan guard from the fan bracket:
a. Before removing a fan or fan guard, note the orientation of each fan and fan guard for reinstallation.
b. Pull up the center pin of each of the fan rivets as shown by (item
c. Pull out the rivet completely (as shown by (item
guard.
7-52
"Removing the Covers" on page
"Removing and Replacing the Front Panel Assembly" on page
"Removing and Replacing the A20 Power Supply Assembly" on page
①
) (five on the right side and seven on the left side) that attach the fan brackets to
➁
) on both sides that attach the rear panel to the fan bracket.
PNA Series Microwave Network Analyzers
③
).
④
) in the illustration.
⑤
) in the illustration) to release the fan and fan
N5224A and N5225A
7-6.
7-20.
Service Guide N5225-90001