Dell 180, 4100, 200 service manual Scsi Backplane Board Removal

SCSI Backplane Board

hard-disk drive carrier

thumb screw

hook (10)

SCSI backplane board

Figure 4-10. SCSI Backplane Board Removal

To remove the SCSI backplane board, follow these steps:

1.Disconnect the hard-disk drive carrier connectors from the SCSI back- plane board by sliding each carrier toward the front of the computer approximately 1 inch.

2.Disconnect all cables from the SCSI backplane board.

3.Unscrew the thumb screw.

4.Disengage the board from the ten hooks holding the board to the com- puter chassis, and lift the board away from the computer.

An insulator (similar to the one for the power-supply paralleling board in Figure 4-12) is attached to the back of the SCSI backplane board with two adhesive strips.

Removing and Replacing Parts 4-11