7-20 Service Guide E8364-90038
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the A11 Phase Lock Board E8362C, E8363C, E8364C
Removing and Replacing the A11 Phase Lock Board
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 7-8 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 two brackets that secure cables to the top of the midweb.
4. With a T-10 TORX driver, remove the two screws (item
①) from the top of the A11 phase lock board.
5. Remove the A13 frequency offset receiver assembly, if present. Refer to “Removing and Replacing the
A13 Frequency Offset Receiver Assembly” on page 7-24.
6. Disengage the A12 source 20 from the A11 connector and slide the A12 partially out of the analyzer.
Refer to “Removing and Replacing the A12 Source 20” on page 7-22.
7. Disconnect any flexible cables that are attached to the A11 phase lock board.
8. Lift the two extractors (item
➁) located at each end of the board.
9. While holding on to the extractors, lift the A11 phase lock board out of the analyzer.
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 7-82.
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