Removing And Replacing The A16 Test Set Motherboard - Agilent Technologies PNA Series Service Manual

Repair and Replacement Procedures

Removing and Replacing the A16 Test Set Motherboard

Removing and Replacing the A16 Test Set Motherboard
Tools Required
• 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 7-13
1. Disconnect the power cord.
2. Remove the outer covers. Refer to
analyzer bottom side up and raise the receiver deck as shown. Refer to
Removing the Receiver Deck" on page 7-8
3. Remove the A21 SOMA 50. Refer to
page 7-40.
4. Remove the A41 hard disk drive and stationary board (shield). Refer to
Replacing the A41 Hard Disk Drive" on page
5. Disconnect the ribbon cables (item
• A14 system motherboard ribbon cable
• A17 LOMA 12 ribbon cable
• A18 MA 24 ribbon cable
• A20 LODA ribbon cable
• A23 and A24 SOMA 70s ribbon cables
• A35 receiver motherboard ribbon cable
• Mixer bias board ribbon cable
6. Disconnect the wrapped-wire cables and flexible RF cables (item
set motherboard:
• Front-panel LED board cable
• A22 switch cable
• A23 and A24 SOMA 70s flexible RF cables
7. Release the flexible RF cables from the cable clamp (item
by pulling the latch pin (item
8. With a T-10 TORX driver, remove the following screws:
• Nine screws (item
• Four screws (item
9. Slide the A16 test set motherboard toward the front of the instrument to release the
locking pins (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
7-30
for this procedure.
"Removing the Covers" on page
"Removing and Replacing the A21 SOMA 50" on
①
) from the A16 test set motherboard:
④
), and move the entire receiver deck out of the way.
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
if necessary.
7-56.
③
). Release the receiver deck
7-66.
Service Guide E8361-90001
E8361A
7-6. Position the
"Raising and
"Removing and
②
) from the A16 test