7-16 Service Guide E8364-90026
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the A4 Power Supply Assembly E8362B, E8363B, E8364B
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 “Removing the Covers” on page 7-6.
3. With a T-10 TORX driver, remove the five screws (item
①) from the power supply
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 Table 7-2 on page 7-80.
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