Removing The Motherboard - Sun Microsystems Sun Blade 1000 Service Manual

8.8.1

Removing the Motherboard

1. Power off the workstation, remove the access panel, and attach the antistatic wrist
strap.
See Chapter 5.
2. Lay the workstation on its side (
3. Remove the following:
a. CPU module(s)
See Section 8.2.2, "Removing a CPU Module" on page 8-6.
b. PCI card(s)
See Section 8.3.1, "Removing a PCI Card" on page 8-20.
c. Graphics card(s)
See Section 8.4.3, "Removing the Graphics Card" on page 8-25.
d. Audio module
See Section 8.5.1, "Removing the Audio Module Assembly" on page 8-28.
4. Disconnect the power supply cables from motherboard connectors J3601 and
J3603.
5. Disconnect the following cables from the motherboard:
Power supply cables to each fan
Combined cable assembly
Internal SCSI cable assemblies
Peripheral power cable assembly
FC-AL backplane cable assembly
Diskette drive cable assembly
Smart card reader cable assembly
Logo LED cable assembly
6. Using a No. 2 Phillips screwdriver, remove the three screws securing the
motherboard to the chassis back panel (
Caution – Handle the motherboard only by its edges or the CPU shroud.
7. Separate the CPU shroud from its cover by pressing the tabs together and
withdrawing the cover for the CPU shroud from the chassis.
8. Using the attached part of the CPU shroud, push the motherboard carefully
toward the front of the unit until it is disengaged from the chassis.
8-36 Sun Blade 1000 and Sun Blade 2000 Service Manual • January 2002
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FIGURE 8-20
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FIGURE 8-20