Dell Precision WorkStation 420 Service Manual page 10

6. Rotate the left side of the diskette drive up until the drive is clear of the retaining tabs.
When you replace the 3.5-inch diskette drive on the bracket, be sure that the two retaining tabs on the right side of the bracket engage the
mounting holes in the side of the 3.5-inch diskette drive. Then replace the screw that holds the diskette drive to the bracket. To replace the 3.5-inch
diskette drive/bracket assembly in the chassis, slide the bracket tabs into the guides on the chassis until the bracket snaps into place. Reconnect
the DC power and interface cables.
5.25-Inch Diskette, LS-120 SuperDisk, Tape, or CD-ROM Drive Removal
To remove a diskette, LS-120 SuperDisk, tape, or CD-ROM drive, perform the following steps:
1. Remove the computer cover.
2. Disconnect the DC power cable and data cable from the back of the drive.
3. Squeeze the metal tabs that extend from each side of the drive bracket toward each other.
4. Pull the bracket out of the bay (see
Figure 14. 5.25-Inch Drive Removal
5. Turn the drive/bracket assembly upside down and remove the four screws that secure the drive to the bracket (see
NOTE: For easier access inside the chassis, you may want to rotate the power supply out of the way temporarily. To do so, see
20.
Figure 15. 5.25-Inch Drive Bracket
1 3.5-inch diskette drive
2 Retaining tabs (2)
3 Bracket
4 Screw
Figure 14).
1 Bracket tabs (2)
Figure 15).
Figure