Dell PowerEdge 6850 - Manual (Page 79)

1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2. Open the system. See " Opening the System " in "Troubleshooting Your System."
3. Remove the cooling shroud. See " Removing the Cooling Shroud " in "Installing System Components."
4. Unlock and slide the SCSI hard drive(s) out of the system. See " Removing a SCSI Hard Drive ."
5. Remove the diskette/optical drive carrier. See Figure 7 -3 .
6. Remove the processor filler blanks or heat sinks from processors 2 and 4. See " Processor " in "Installing System Components."
7. Disconnect the SCSI, data interface, and power cables from the front of the SCSI backplane. See Figure A -5 .
8. Disconnect the control-panel cable from the back of the SCSI backplane. See Figure A -5 .
9. Remove the SCSI backplane:
a. Pull the spring-loaded blue retention pin away from the front of the backplane, then slide the backplane upward. See Figure 7 -6 .
b. When the backplane cannot slide upward any farther, pull the backplane toward the back of the system to remove it from the retention hooks.
c. Lift the board out of the system, being careful to avoid damaging components on the face of the board.
d. Place the SCSI backplane face down on a work surface.
Figure 7-6. Removing and Installing the SCSI Backplane
Installing the SCSI Daughter Card
1. Hold the daughter card by its edges with the card connector facing the SCSI backplane board.
2. Insert the card connector into the daughter card connector on the SCSI backplane board. See Figure 7 -7 . Ensure that the standoffs on the daughter
card are fully seated into the SCSI backplane board.
Figure 7-7. Installing and Removing the SCSI Backplane Daughter Card
NOTICE: To prevent damage to the drives and backplane, you must remove the SCSI drives and diskette/optical drive carrier from the system before
removing the backplane. You must note the number of each hard drive and temporarily label them before removal, so you can replace them in the same
locations.
NOTICE: When disconnecting the control-panel cable, hold the white pull-tab next to the control-panel cable connector to prevent damage to the SCSI
backplane or the cable itself.