HP Server rp4440 User Service Guide, Fifth Edition - HP 9000 rp4410/4440 - Page 214

SCSI Backplane, Removing the SCSI Backplane, Service Provider.

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SCSI Backplane The SCSI backplane is attached to the rear of the disk media housing at the front right side of the chassis. WARNING! Ensure that the system is powered off and all power sources have been disconnected from the server before removing or replacing the SCSI backplane. Voltages are present at various locations within the server whenever an ac power source is connected. This voltage is present even when the main power switch is in the off position. Failure to observe this warning can result in personal injury or damage to equipment. CAUTION: Failure to properly complete the steps in this procedure results in erratic system behavior or system failure. For assistance with this procedure contact your local HP Authorized Service Provider. Observe all ESD safety precautions before attempting this procedure. Failure to follow ESD safety precautions can result in damage to the server. Removing the SCSI Backplane To remove the SCSI backplane, follow these steps: 1. If rack-mounted, slide the server out from the rack until it stops. (See "Accessing a Rack-Mounted Server" (page 149).) 2. Remove the front bezel. (See "Removing the Front Bezel" (page 152).) 3. Remove the front cover. (See "Removing the Front Cover" (page 152).) 4. Remove the memory extender board. (See "Removing the Memory Extender Board" (page 155).) 5. Remove the processor extender board. (See "Removing the Processor Extender Board" (page 161).) 6. Remove the two hot-pluggable disk drives. (See "Hot-Pluggable Disk Drives" (page 212).) 7. Unplug the internal SCSI cables from the SCSI backplane. 8. Unplug the SCSI backplane-to-midplane riser cable from the SCSI backplane. 9. Remove the hot-pluggable disk drives. (See "Removing a Hot-Pluggable Disk Drive" (page 212).) 10. To unlatch the SCSI backplane from the cage, turn the swivel latch on top of the hot-pluggable hard disk drive cage. 11. Grasp the top edge of the SCSI backplane and pull up until it releases from the keyway slots on the back of the hot-pluggable disk drive cage. 214 Removing and Replacing Components

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SCSI Backplane
The SCSI backplane is attached to the rear of the disk media housing at the front right side of
the chassis.
WARNING!
Ensure that the system is powered off and all power sources have been disconnected
from the server before removing or replacing the SCSI backplane.
Voltages are present at various locations within the server whenever an ac power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
CAUTION:
Failure to properly complete the steps in this procedure results in erratic system
behavior or system failure. For assistance with this procedure contact your local HP Authorized
Service Provider.
Observe all ESD safety precautions before attempting this procedure. Failure to follow ESD safety
precautions can result in damage to the server.
Removing the SCSI Backplane
To remove the SCSI backplane, follow these steps:
1.
If rack-mounted, slide the server out from the rack until it stops. (See
“Accessing a
Rack-Mounted Server” (page 149)
.)
2.
Remove the front bezel. (See
“Removing the Front Bezel” (page 152)
.)
3.
Remove the front cover. (See
“Removing the Front Cover” (page 152)
.)
4.
Remove the memory extender board. (See
“Removing the Memory Extender Board”
(page 155)
.)
5.
Remove the processor extender board. (See
“Removing the Processor Extender Board”
(page 161)
.)
6.
Remove the two hot-pluggable disk drives. (See
“Hot-Pluggable Disk Drives” (page 212)
.)
7.
Unplug the internal SCSI cables from the SCSI backplane.
8.
Unplug the SCSI backplane-to-midplane riser cable from the SCSI backplane.
9.
Remove the hot-pluggable disk drives. (See
“Removing a Hot-Pluggable Disk Drive”
(page 212)
.)
10.
To unlatch the SCSI backplane from the cage, turn the swivel latch on top of the hot-pluggable
hard disk drive cage.
11.
Grasp the top edge of the SCSI backplane and pull up until it releases from the keyway slots
on the back of the hot-pluggable disk drive cage.
214
Removing and Replacing Components