Sun Microsystems Netra t 1120, Service Manual, Page: 117 / 148

Chapter 10 Motherboard and Component Replacement 10-25
5. Depopulate the motherboard by removing the following:
a. CPU module(s).
See Section 10.1.1 “To Remove a CPU Module” on page 10-2.
b. Dual processor bracket.
See Section 10.1.3 “To Remove the Dual Processor Bracket” on page 10-4.
c. NVRAM/TOD with carrier.
See Section 10.3.1 “To Remove the NVRAM/TOD” on page 10-10.
d. Alarms card.
See Section 10.6.1 “To Remove the Alarms Card” on page 10-21.
e. PCI card(s).
See Section 10.4.1 “To Remove a PCI Card” on page 10-13.
f. SIMMs.
See Section 10.5.1 “To Remove a SIMM” on page 10-17.
6. Disconnect the SCSI cable.
7. Disconnect the external cables.
8. Using a No.2 Phillips-head screwdriver, undo the three captive screws securing
the motherboard to the rear chassis panel.
.
FIGURE 10-10
Removing and Replacing the Motherboard (#1)
9. Remove the motherboard by sliding it towards the front of the chassis slightly,
then raising the left-hand-side (viewed from the front of system).