Service manual

10-22 Sun Ultra 2 Series Service Manual • July 1996
a. Remove the following from the motherboard:
■ All CPU modules (Section 10.1.1 “Removing a CPU Module” on page 10-1).
■ NVRAM/TOD with carrier (Section 10.2.1 “Removing the NVRAM/TOD” on
page 10-4).
■ All SBus card(s) (Section 10.3.1 “Removing an SBus Card” on page 10-6).
■ UPA graphics card (Section 10.4.1 “Removing a UPA Graphics Card” on
page 10-11).
■ All DSIMMs (Section 10.5.1 “Removing a DSIMM” on page 10-17).
b. Disconnect the following from the motherboard:
■ SCSI cable (Section 8.2.1 “Removing the SCSI Cable Assembly” on page 8-5).
■ DC power cable connectors; J1 from J3206, J2 from J3205, J3 from J3203, and J4
from J3204.
■ Diskette drive cable (Section 8.2.3 “Removing the Diskette Drive Cable Assembly”
on page 8-8).
■ Hard drive (Section 9.1.1 “Removing a Hard Drive” on page 9-1).
6. Using a number 2 Phillips screwdriver, remove the four screws securing the
motherboard back panel to the chassis.
Note – Ensure that the hooks located on the chassis base disengage with the slots
located on the bottom of the motherboard.
7. Disconnect the motherboard from the chassis by grasping the motherboard
shroud assembly and pushing the motherboard forward to disengage the chassis
base hooks from the motherboard slots.
Caution – Handle the motherboard by the back panel or by the edges only.
8. Grasp the motherboard and lift it from the chassis (
FIGURE 10-16).
9. Place the motherboard on an antistatic surface.