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10-20 Sun Ultra 60 Service Manual • August 2001
10.7.1 Removing a Motherboard
1. Power off the system unit.
See Section 6.2, “Powering Off the System Unit” on page 6-3.
2. Remove the side access cover.
See Section 7.1, “Removing the Side Access Cover” on page 7-2.
Caution – Use proper ESD grounding techniques when handling components. Wear
an antistatic wrist strap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing them on any surface.
3. Attach a wrist strap.
See Section 7.2, “Attaching the Wrist Strap” on page 7-3.
4. Remove the power supply.
See Section 8.1.1, “Removing the Power Supply” on page 8-2.
5. Remove the motherboard as follows:
a. Remove the following from the motherboard:
■ PCI card(s). See Section 10.3.1, “Removing a PCI Card” on page 10-7.
■ UPA graphics card(s). See Section 10.4.1, “Removing the UPA Graphics Card”
on page 10-10.
■ Audio card. See Section 10.6.1, “Removing the Audio Card” on page 10-16.
b. Unlatch the shroud from the PCI fan bracket hinge clip.
c. Disconnect the following:
■ Peripheral cable. See Section 8.4.1, “Removing the Peripheral Power Cable
Assembly” on page 8-11.
Note – Unconnected peripheral power cables should remain clipped inside the
main chassis.
■ External cables.
■ DC power cable.
■ Internal SCSI cable assembly.
■ PCI fan assembly power connector.
d. Using a number 2 Phillips-head screwdriver, proceed as follows:
■ Remove the three screws securing the motherboard to the chassis (FIGURE10-7).