1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Pull the retention lever to slide the daughter card away from the SCSI backplane connector (see Figure4-23).
3. Lift the card up and away from the tabs on the card guide above the drive bay (see Figure4-23).
SCSI Backplane Board
The system contains a 3.5-inch diskette drive and a CD drive mounted on the CD/diskette drive tray that connects to the controllers on the system board
through the SCSI backplane board. The system also contains up to five 1-inch SCSI hard drives that connect to a controller on the system board or a RAID
controller card through the SCSI backplane board.
Removing the SCSI Backplane Board
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the cover (see "Removing the Cover").
3. Remove the control-panel cable cover (see "Removing the Control-Panel Cable Cover").
4. Pull the system board tray straight back until it stops (see "Removing the System Board Tray").
5. Remove the SCSI backplane daughter card if it is installed (see "Removing the SCSI Backplane Daughter Card").
6. Remove the CD/diskette drive tray (see "Removing the CD/Diskette Drive Tray").
7. Remove all hard drives (see "Removing a Hard Drive").
8. Loosen thumbscrew that secures the SCSI backplane board in the system (see Figure4-24).
9. Slidethebackplaneboardtowardtherightsidechassiswallabout0.5inch.
10. Lift backplane board off of its grounding tabs.
11. Lift the backplane board and disconnect the control-panel cable from the board (see Figure4-5).
12. Lift backplane board out of the system board tray (see Figure4-24).
Figure 4-24. Removing and Replacing the SCSI Backplane Board
Replacing the SCSI Backplane Board
