Dell PowerEdge 1750 - Manual (Page 39)

5. Disconnect the diskette-drive interface cable from the FLOPPY connector on the backplane board. See Figure 4 -21 .
6. Disconnect the CD drive interface cable from the CD_ROM connector on the backplane board. See Figure 4 -21 .
7. Press the release latch in toward the backplane board and use the handle to pull the board out of its connector and up out of the chassis.
Installing the SCSI Backplane Board
1. Insert the SCSI backplane board into the chassis:
a. Fit the metal tabs (one tab at each end of the backplane) into the slots in the chassis wall and lower the backplane into the chassis, ensuring
that the CD and diskette drive interface cables are not caught under the backplane.
b. Press down firmly over the handle to seat the backplane in its connector.
2. Pivot the release latch out into the securing slot in the chassis.
3. Connect the CD drive interface cable to the CD_ROM connector on the backplane board. See Figure 5 -4 .
4. Connect the diskette-drive interface cable to the FLOPPY connector on the backplane board. See Figure 5 -4 .
5. Press all installed hard drives firmly back into the SCSI connectors on the backplane.
6. Close the system covers. See " Closing the System Covers ."
7. Reconnect the system and any attached peripherals to their electrical outlets, and turn them on.
8. Replace the optional front bezel, if applicable. See " Replacing the Bezel ."
System Board
Removing the System Board
1. Remove the optional front bezel, if present. See " Removing the Bezel ."
2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
3. Open the system covers. See " Opening the System Covers ."
4. Remove the SCSI backplane board. See " Removing the SCSI Backplane Board ."
5. Disconnect all cables attached to the system board. See Figure 5 -3 .
l Power and signal cables coming from the PDB (disconnect from the PS_PWR and PS_SIG connectors on the system board)
l Control panel cable (disconnect from the FRONT_PANEL connector on the system board)
l System and power-supply fan cables (6)
l Any other cables attached to the system board, after recording their locations
6. Remove the fan bracket. See " Removing the Fan Bracket ." (Do not remove the fans from the bracket.)
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See
your System Information Guide for complete information about safety precautions, working inside the system, and protecting against
electrostatic discharge.