Dell PowerVault 735N Service Manual page 56

Removing and Replacing Parts: Dell PowerVault 735N Systems Service Manual
To remove a SCSI backplane board, perform the following steps.
NOTICE: See "Protecting Against Electrostatic
1. Remove the optional plastic bezel
2. If you have not already done so,
(see Figure 10).
3. Remove the fan assembly.
NOTICE: You must remove all hard-disk drives to gain access to the SCSI daughter card and to enable the removal of the SCSI
backplane board.
4. Unlatch and pull all four hard-disk drives from the hard-disk drive bay. Label the drives with their location in the hard-disk drive bay.
5. Remove the SCSI backplane daughter card by opening the retention lever on each card's front edge and pulling the daughter card out of
its socket on the SCSI backplane (see
When installing a replacement SCSI backplane board, see
NOTICE: To prevent your system from overheating, make sure the SCSI cables do not block the cooling fans.
Figure 15. Removing the SCSI Daughter Card
6. Record the connectors used and disconnect all SCSI cables attached to the SCSI backplane board (see
DC power connector (POWER2) is connected to the power input connector on the backplane board.
NOTICE: To prevent your system from overheating, make sure the SCSI cables do not block the cooling fans.
Figure 16. SCSI Backplane Connectors
file:///C:/Users/Phebega_Pericho/Desktop/spv735N/en/sm/remove.htm[3/15/2013 4:18:18 PM]
Discharge" for information on protecting the system from electrostatic discharge.
(if installed).
unlock and open the system doors
Figure 15).
Figure 16
1 SCSI backplane board
2 SCSI backplane daughter cards
3 Retention lever
1 Thumbscrew
2 Data interface cable to system
board (BACKPLANE)
3 Power cable to PSDB (P2)
4 Ultra3 SCSI cable to
PERC 2/DC
and remove the hard-disk drive locks
for cable connections.
from the hard-disk drive bays
Figure 16).