Midplane Riser Board; Removing The Midplane Riser Board - HP Integrity rx4640 Operation And Maintenance Manual

Midplane Riser Board

The midplane riser board is attached to the main bulkhead in the center of the chassis.
WARNING
Ensure that the system is powered down 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 could result in personal injury or damage to equipment.
CAUTION
Failure to properly complete the steps in this procedure will result 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 could result in damage to the server.

Removing the Midplane Riser Board

To remove the midplane riser board, perform the following steps:
Step 1. If rack mounted, slide the HP Server out from the rack until it stops. See "Accessing a Rack Mounted Server" on
page 141.
Step 2. Remove the front bezel. See "Front Bezel" on page 144.
Step 3. Remove the front and top covers. See "Front and Top Covers" on page 145.
Step 4. Remove the memory extender board. See "Memory Extender Board" on page 151.
Step 5. Remove the processor extender board. See "Processor Extender Board" on page 160.
Step 6. Remove the 3 chassis hot-swap fan units. See "Hot-Swap Chassis Fan Unit" on page 168.
Step 7. Remove the I/O baseboard assembly. See "I/O Baseboard Assembly" on page 172.
Step 8. Remove the SCSI backplane board. See "SCSI Backplane Board" on page 199.
Step 9. Unplug the power distribution board power cable and signal cable from the midplane riser board.
Step 10. Unplug the DVD relay board and front panel display board cable from the midplane riser board.
Step 11. Unplug the QuickFind diagnostic board cable from the midplane riser board.
NOTE
Step 12. Using a torx #15 driver, remove the five torx screws attaching the midplane riser board to the chassis.
Chapter 7
At this point, all cables and connectors should be unplugged from the midplane riser board.
Removing and Replacing Components
Midplane Riser Board
201