Cpu, Heat Sink, And System Board Assembly; Removing The System Board; Section 1.12, "Cpu, Heat Sink, And System Board Assembly - Oracle Sun Fire V125 Service Manual

1.12 CPU, Heat Sink, and System Board
Assembly
The CPU, heatsink, and system board are replaced as a single assembly.
Tip – To perform the steps in this section, you need a 5 mm wrench to remove and
install the SCSI pillars and the DB-9 jackposts.
1.12.1

Removing the System Board

1. Power off the server.
See Section 1.2, "Controlling Server Power" on page
2. Ensure that the server is properly grounded.
See Section 1.3, "Avoiding Electrostatic Discharge" on page
3. Open the back section of the cover.
See Section 1.4, "Opening the Server" on page
4. Disconnect the power supply wiring harness from the system board.
5. Disconnect the interface board SCSI and IDE cables from the system board.
6. If any PCI cards are fitted, remove them.
See Section 1.14.1, "Adding a PCI Card" on page
7. Remove the PCI slider assembly.
8. Remove the server fan assembly.
9. Unscrew and remove the DB-9 and SCSI jackposts on the server's back panel.
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