Infor mation Update 1-3CAUTION: Before you perform this procedure you must turn off the system anddisconnect it from its power source. See your System Information Guide forcomplete information about safety precautions, working inside the computer,and protecting against electrostatic discharge.NOTE: The following two procedures assume that you have already removed thesystem covers and performed the initial steps of "Installing a ROMB Card" or"Removing a ROMB Card" in your Installation and Troubleshooting Guide.Removing the SCSI Backplane Board1 Pull each hard-drive carrier partially out of its slot, approximately 2.5 cm (1 inch).2 Disconnect the diskette-drive interface cable from the FLOPPY connector on thebackplane board. See Figure 1-1.3 Disconnect the CD drive interface cable from the CD_ROM connector on thebackplane board. See Figure 1-1.4 Press the release latch in toward the backplane board and use the handle to pull theboard out of its connector and up out of the chassis. See Figure 1-1.Installing the SCSI Backplane Board1 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 thechassis wall and lower the backplane into the chassis, ensuring that the CD anddiskette drive interface cables are not caught under the backplane. See Figure 1-1.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 backplaneboard.4 Connect the diskette-drive interface cable to the FLOPPY connector on the backplaneboard.5 Press all installed hard drives firmly back into the SCSI connectors on the backplane.