378 Chapter 11
Assembly Replacement Procedures
A23 Disk Drive
A23 Disk Drive
CAUTION Use ESD precautions when performing this replacement procedure.
NOTE The A23 disk drive assembly consists of the disk drive, disk drive board,
and disk drive mount. These are removed from the instrument as a
unit, but they can be replaced separately.
Removal
1. Remove the instrument top brace. Refer to the “Top Brace” removal
procedure.
2. Remove the front frame. Refer to the “Front Frame” removal
procedure.
3. Remove the RF section. Refer to the “RF Section E4440A, E4443A,
E4445A” removal procedure.
4. Unplug the front frame ribbon cable from the motherboard.
5. Refer to Figure 11-45. Using the T-10 driver, remove the 2 screws
(1) that attach the disk drive cover to the deck.
6. Unplug the flat flex cable from the motherboard connector. It is
necessary to unlock this connector before removing the cable.
7. Remove the ferrite block from the cable.
8. The disk drive assembly can now be pulled out of the chassis.
9. To separate the disk drive board from the disk drive, refer to
Figure 11-46. Remove the top part of the disk drive mount (1). The
disk drive (2) and the disk drive board (3) can now be lifted out of
the bottom part of the mount (4).
10.Remove the flat flex cable from the disk drive by unlocking the
connector on the drive.
To Next Page
Loading...
Need help?
General
