HP Integrity rx4640 - Removing and Replacing the Midplane Riser Board; Removing the Midplane Riser Board

Removing and Replacing the Midplane Riser Board
The midplane riser board is attached to the main bulkhead in the center of the chassis.
WARNING! Ensure that the server is powered off and all power sources have been disconnected
from the server prior to removing or replacing the midplane riser 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 will result in erratic server
behavior or server 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 Midplane Riser Board
To remove the midplane riser board, follow these steps:
1. If rack mounted, slide the server out from the rack until it stops. See “Extending the Server
From the Rack” (page 31).
2. Remove the front bezel. See “Removing the Front Bezel” (page 34).
3. Remove the front cover. See “Removing the Front Cover” (page 35).
4. Remove the top cover. See “Removing the Top Cover” (page 36).
5. Remove the memory extender board. See “Removing the Memory Extender Board” (page 37).
6. Remove the processor extender board. See “Removing the Processor Extender Board”
(page 43).
7. Remove the three chassis hot-swappable fan units. See “Removing a Hot-Swappable Chassis
Fan Unit” (page 53).
8. Remove the I/O baseboard assembly. See “Removing the I/O Baseboard” (page 56).
9. Remove the SCSI backplane board. See “Removing the SCSI Backplane Board” (page 79).
10. Unplug the power distribution board power cable and signal cable from the midplane riser
board.
11. Unplug the DVD relay board and front panel display board cable from the midplane riser
board.
12. Unplug the QuickFind diagnostic board cable from the midplane riser board.
NOTE: At this point, all cables and connectors should be unplugged from the midplane
riser board.
13. Using a torx #15 driver, remove the five torx screws attaching the midplane riser board to
the chassis.
14. Grasp the top edge of the midplane riser board and lift straight up to release it from the
keyway slots on the chassis.
15. Pull the riser board straight out and up to remove the it from the chassis. Figure 4-39 shows
how to remove the midplane riser board.
Removing and Replacing the Midplane Riser Board 81