520 N9030B PXA Signal Analyzer Service Guide
Assembly Replacement Procedures
Disk Drive
4. Remove the 2 screws (4) (0515-0372) that attached the A4A1 Disk Drive
Interconnect board (5) to the A4 CPU assembly.
5. Unplug and remove the A4A1 Disk Drive Interconnect board from the A4
CPU assembly by pulling the board towards the disk drive bay opening
(6) to disengage the connector.
Installation
1. Refer to Figure 16-83. Plug the A4A1 Disk Drive Interconnect board (5)
into the A4 CPU assembly by carefully sliding it into place from the disk
drive bay opening (6).
2. Install the 2 screws (4) (0515-0372) that secure the A4A1 Disk Drive
Interconnect board to the A4 CPU assembly and torque them to
9 inch-pounds.
3. Replace the A4 CPU assembly cover (1) and attach it with the 19
flat-head screws (2 ) (0515-1227) and the 3 pan-head screws (3)
(0515-0372). Torque all screws to 9 inch-pounds.
4. Re-install the A4 CPU assembly into the instrument. Refer to the CPU
Assembly installation procedure.
5. Re-install the A5 Disk Drive assembly into the instrument. Refer to the
Disk Drive installation procedure.
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