Sun Microsystems 60 service manual Removing a Motherboard

10.7.1Removing 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 (FIGURE 10-7).

10-20Sun Ultra 60 Service Manual • August 2001