Agilent N5161A/62A/81A/82A/83A MXG Signal Generators Service Guide
Assembly Replacement
A5 CPU
3-54
A5 CPU
Tools Required
•T-8 driver
Removal Procedure
Refer to Figure 3-30 for this procedure.
CAUTION There are three pin connectors attaching the A5 CPU to the A3 RF assembly. They are located on the short end of the A5 CPU
board, closest to the front-panel. Use caution when removing the A5 CPU board.
1. Go to ”Assembly Installation and Removal Overview” on page 4-2, and complete the ”Assembly Removal and Installation Procedure”
on page 4-3.
2. Disconnect the power cord.
3. Remove the covers from the signal generator. Refer to ”Outer Cover” on page 3-4 and ”Inner Bottom Cover” on page 3-8.
4. Place the signal generator flat and upside down with the front-panel facing you.
5. Using the T-8 driver, remove the four screws (1) that attach the A5 CPU to the A3 RF assembly.
6. Remove the A5 CPU.
7. Disconnect W9.
Replacement Procedure
1. Reverse the order of the removal procedure.
2. Torque all screws to 9 in–lbs.
3. Perform the post-repair service procedure and performance tests that pertain to this replacement procedure, see Chapter 4, Post-Repair
Procedures and Performance Verification.
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