Removing And Replacing The A16 Test Set Motherboard And The Usb Hub - Agilent Technologies N5230A Service Manual

Repair and Replacement Procedures

Removing and Replacing the A16 Test Set Motherboard and the USB Hub

Removing and Replacing the A16 Test Set Motherboard
and the USB Hub
Tools Required
• T-8 TORX driver (set to 5 in-lb)
• T-10 TORX driver (set to 9 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• 5/16 inch open-end torque wrench (set to 10 in-lb)
• ESD grounding wrist strap
Removal Procedure
Refer to Figure 7-9 for this procedure.
1. Disconnect the power cord.
2. Remove the outer covers. Refer to
analyzer bottom side up.
3. Remove the A41 hard disk drive. Refer to
Drive (HDD)" on page
4. Remove the hard disk drive shield (item
②
(item ), using a T-10 TORX driver. These screws are accessible through holes in the
side of the chassis.
5. Disconnect the ribbon cables (item
6. Disconnect the wrapped-wire and flexible RF cables (item
motherboard.
7. With a T-10 TORX driver, remove the following screws:
• Nine screws (item
• Four screws (item
8. Slide the A16 test set motherboard toward the front of the instrument to release the
locking pins (item
9. To remove the USB hub, remove two screws (item
Replacement Procedure
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
7-22
"Removing the Covers" on page
7-34.
③
) from the A16 test set motherboard.
⑤
) from the rear panel.
⑥
) from the A16 test set motherboard.
⑦
), then lift the motherboard and remove it from the analyzer.
Table 7-2 on page
PNA Series Microwave Network Analyzers
"Removing and Replacing the A41 Hard Disk
①
) by loosening two attachment screws
④
) from the A16 test set
⑧
), using a T-8 TORX driver.
7-45.
Service Guide N5230-90014
N5230A
7-6. Position the