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235-200-150
October 2005
Replace System Unit ( Netra
4.13
OVERVIEW
This procedure is used to replace the Netra 240 Administrative Workstation (AW).
Before replacing the AW, preliminary checks should be performed to ensure that the
cause of failure has not resulted from power becoming unavailable to the unit, the
power switch inadvertently placed to the off position, or the failure of a peripheral
2
(Ethernet
, Serial Asynchronous, or High Speed) interface cable.
Note:
This procedure assumes action has been taken to verify the failure is not
caused by a failure of one or both disk drives in the AW. To replace a defective disk,
see "Replace a Defective Primary Disk (Netra 240)", Subprocedure 4.5.4 or "Replace a
Defective Secondary Disk (Netra 240)", Subprocedure 4.5.5.
Caution: Follow proper ESD grounding procedures when handling AW units.
Wear an antistatic wrist strap. Handle disk drives by their sides and store
ESD-sensitive components in antistatic containers.
PROCEDURE
1.
If the AW is operational, continue to Step 2. Otherwise skip to Step 5.
2.
Backup the AW operating system to disk and tape (see Backup Administrative
Workstation Operating System," Procedure 4.4).
3.
Make full office backup tapes (see 235-105-210, 5ESS
Operations and Maintenance ProceduresSection 6.23 "Make Full Office Backup
Tape").
4.
Halt the AW (see "Halt the Administrative Workstation," Procedure 4.2).
5.
Remove power to the AW (see "Remove Power to Administrative Workstation
Units (Netra 240)," Procedure 4.9).
6.
Remove and label the cables connected to the rear of the AW.
• Serial Port DB-9 Cable
• DAT72 SCSI Bus Cable
• High Speed Interface PCI Card Cable
• SCI PCI Cables
• Ethernet Interface cables.
• DC Power Input Cables to the Power Supply Units
7.
Remove the mounting screws securing the AW to the frame. Save the screws for
mounting the replacement AW to the frame.
8.
Remove the AW from the frame by sliding the system forward.
9.
Remove the mounting brackets from the AW. Save the screws and brackets for
mounting the replacement AW to the frame.
10. Remove the disk drives from the AW that will be replaced.
1. Registered trademark of Sun Microsystems, Inc.
2. Registered trademark of Xerox, Corp.
Issue 3.00B
ADMINISTRATIVE WORKSTATION MAINTENANCE
1
240)
Procedure 4.13
®
-2000 Switch Routine
Page 4.13-1
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