Technical data

7-10 Service Guide N5230-90025
Repair and Replacement Procedures PNA Series Microwave Network Analyzers
Removing and Replacing Front Panel Subassemblies N5230C
Removing and Replacing Front Panel Subassemblies
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
Refer to Figure 7-3 for the following procedures.
Pre-replacement Procedure
1. Disconnect the power cord.
2. Remove the front panel assembly. Refer to “Removing and Replacing the Front Panel Assembly” on page
7-8.
Replacing the Inverter Board
1. Remove the inverter board shield by removing the two retaining screws (item
①
).
2. Disconnect the two A2 display cables (item
➁) from the inverter board.
3. Disconnect the inverter cable (item
③
) from the inverter board.
4. Remove the two retaining screws (item
④
) from the inverter board.
5. Remove the inverter board from the front panel assembly.
6. Install the new inverter board by reversing the removal instructions.
7. Perform the post-repair adjustments, verifications, and performance tests that pertain to this
replacement procedure. Refer to Table 7-2 on page 7-58.
Replacing the Touch Screen Controller Board
1. Disconnect the touch screen display cable (item
⑤
) from the touch screen controller board.
2. Disconnect the touch screen controller cable (item
⑥
) from the touch screen controller board. NOTE THAT THE
CABLE CONNECTS TO THE UPPER FIVE PINS ON THE CONTROLLER BOARD CONNECTOR. THIS IS
IMPORTANT FOR RE-INSTALLATION. Refer to Figure 7-4 on page 7-13
for an illustration of the cable and
connector.
3. Remove the two retaining screws (item
⑦
) from the touch screen controller board.
4. Remove the touch screen controller board from the front panel assembly.
5. Install the new touch screen controller board by reversing the removal instructions.
6. Perform the post-repair adjustments, verifications, and performance tests that pertain to this
replacement procedure. Refer to Table 7-2 on page 7-58.