Removing And Replacing The A14 System Motherboard - Agilent Technologies N5230A Service Manual

Repair and Replacement Procedures

Removing and Replacing the A14 System Motherboard

Removing and Replacing the A14 System 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 7-7 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
Assembly" on page
4. Remove the A4 power supply assembly. Refer to
Power Supply Assembly" on page
5. Remove the card cage boards (A5, A6, A7, A8, A9, and A10). Refer to
Replacing the A5 through A10 Boards" on page
6. Remove the A15 CPU board. Refer to
page 7-20.
7. Remove the Midweb. Refer to
on page 7-40.
8. Disconnect the front panel ribbon cable (item
②
(item ), the A16 test set motherboard ribbon cable (item
④
) from the A14 system motherboard.
9. Remove the power switch push button (item
10. Lift the tab at the rear of the A40 floppy disk drive enclosure and remove the enclosure
rear cover.
11. Remove the four screws (item
12. Lift the A14 system motherboard out of the analyzer being careful not to damage any
adjacent components.
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
7-18
7-8.
7-14.
"Removing and Replacing the A15 CPU Board" on
"Removing and Replacing the Midweb and the B1 Fan"
⑦
) that secure the A14 system motherboard.
Table 7-2 on page
PNA Series Microwave Network Analyzers
"Removing the Covers" on page
"Removing and Replacing the Front Panel
"Removing and Replacing the A4
7-16.
①
), the A40 floppy disk drive ribbon cable
③
), and the USB cable (item
⑤
) and spring (item
7-45.
Service Guide N5230-90014
N5230A
7-6.
"Removing and
⑥
).