7-56 Service Guide E8364-90038
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing the A35 Receiver Motherboard E8362C, E8363C, E8364C
Removing and Replacing the A35 Receiver 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 for this procedure.
1. Disconnect the power cord.
2. Remove the outer covers. Refer to “Removing the Covers” on page 7-6. Position the analyzer bottom side
up and raise the receiver deck as shown. Refer to “Raising the Receiver Deck” on page 7-8 if necessary.
3. Remove the A49 IF multiplexer board and all four receiver modules. Refer to “Removing and Replacing
the A31, A32, A33, and A34 Receiver Modules and A49 IF Multiplexer Board” on page 7-54.
4. Disconnect the flexible cables (item
①) from the receiver motherboard.
5. Disconnect the flexible cable (item
➁) from the receiver motherboard if present
(Option 080 only).
6. Disconnect the ribbon cable (item
③) from the receiver motherboard.
7. Remove the receiver deck from the analyzer with the receiver motherboard attached. Refer to “Removing
the Receiver Deck” on page 7-8, if necessary. The receiver motherboard and receiver deck are replaced
as one unit.
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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