Repair and Replacement Procedures
Removing and Replacing the A4 Power Supply Assembly
Removing and Replacing the A4 Power Supply Assembly
Tools Required
• T-10 TORX driver (set to 9 in-lb)
• T-20 TORX driver (set to 21 in-lb)
• ESD grounding wrist strap
Removal Procedure
Refer to
Figure 7-6
for this procedure.
1. Disconnect the power cord.
2. Remove the outer and inner covers. Refer to
3. With a T-10 TORX driver, remove the five screws (item
assembly.
4. Lift out and remove the A4 power supply assembly.
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
7-16
"Removing the Covers" on page
①
Table 7-2 on page
7-70.
PNA Series Microwave Network Analyzers
E8362A, E8363A, E8364A
7-6.
) from the power supply
Service Guide E8364-90001