Sun Microsystems Netra t 1120, Service Manual

Page: 90 / 148

9-8 Netra t 1120/1125 Service Manual • August 1998
9.3 SCSI Backplane
9.3.1 To Remove the SCSI Backplane
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.
1. Attach the wrist strap.
See Section 7.1 “To Attach the Wrist Strap” on page 7-1.
2. Power off the system and remove the input power connector(s).
See Section 6.2 “To Power Off the System” on page 6-3.
3. Remove the top cover.
See Section 7.2 “To Remove the Top Access Cover” on page 7-4.
4. Remove the power supply.
See Section 8.1.1 “To Remove the Power Supply” on page 8-1.
5. Remove the hard disk drive(s).
See Section 9.1.1 “To Remove a Hard Disk Drive” on page 9-2.
6. Remove the CPU module(s).
See Section 10.1.1 “To Remove a CPU Module” on page 10-2.
7. Remove the dual processor bracket.
See Section 10.1.3 “To Remove the Dual Processor Bracket” on page 10-4.
8. Remove the SCSI connector from the removable media drive.
9. Using a No. 1 Phillips-head screwdriver, remove the four screws securing the
SCSI backplane.
In order to perform this it may be necessary to remove some SIMMS; for information
refer to Section 10.5.1 “To Remove a SIMM” on page 10-17.
10. Disconnect the cable from the motherboard and feed the connector under the
drive bay. Remove the SCSI backplane board from the chassis and place it on an
ESD mat.
!