360K Floppy Drive  (250-1063)     Installation          Faxback Doc. # 5149

We recommend that you have the secondary disk drive installed by the
service technicians at your Radio Shack Service Center.  Doing so not only
ensures expert installation, but also enables the technicians to quickly
check to be sure all the equipment is functioning properly.

If, however, you do decide to install the kit yourself, follow these steps
exactly:

WARNING: Turn off all equipment.  Disconnect the power cord from the back
of the computer.  If the computer is on, you could damage the central
processing unit, as well as your secondary disk drive.

1. To avoid possible static charge build-up, touch a metal object to ground
   yourself before you begin.

2. The Tandy 1000 SX Disk Drive Kit consists of the following parts:

    * the disk drive
    * three small screws

   Be sure the disk drive in this kit matches the disk drive in your
   computer.  Pay special attention to the drive light and door latch.
   They should be positioned the same as those in the drive in your
   computer.  If they do not match, see your Radio Shack dealer.

3. Remove the two screws on the front of the main unit.  Remove the cover
   by sliding it away from the rear of the unit, parallel to the computer.

4. Facing the front of the unit, locate the screws on the right side that
   hold the primary drive (lower drive) in place.  It might be helpful to
   loosen these screws (without removing them) so that you can use the main
   unit as a reference for securing the new disk drive.

NOTE: Right and left mean your right or your left as you face the computer.

5. Slide the disk drive into the drive mount directly above the first
   drive.  Be sure that the drive light and door latch are on the same side
   as they  are on the primary drive.  See Figure 2.

6. Insert the two small screws (included) into the mounting holes on the
   right side of the drive mount bracket.  Notice that the drive mount
   bracket has an upper and lower set of holes for each drive.  When
   mounting the secondary drive, place the screws in the set of holes that
   corresponds to the set used for the first drive. See Figure 2.

   For example, if the first drive's screws are in the lower set of holes,
   use the lower set of holes for the second drive, and vice versa.

   Do not tighten the screws yet.

HINT: You may have to lift the drive slightly to align the holes.

7. Insert the remaining screw into the left side of the drive.  Only one
   hole will line up with a corresponding hole in the drive mount bracket.

8. Tighten all screws of both drives.

9. Look at the backs of the drives, and locate the 34-pin ribbon cable that
   is attached to the first drive.  Connect the other end of the cable to
   the card edge on the right side of the second drive.  Do not twist the
   cable.  Refer to Figure 3.

10. Next, connect the four-pin power connector to the connector next to the
    card edge.  You can connect this connector in only one way.  Do not
    force it.

11. Remove the plastic panel that covers the drive opening in the case by
    placing both thumbs on the outside of the cover and pushing in evenly.
    The panel should pop out.

12. Before replacing the main unit's cover, check all connections, and be
    sure all screws are tightened.

13. Replace the main unit's cover and screws.

14. Carefully remove the shipping card from the drive slot.

You can now use your new disk drive on your Tandy 1000 SX.  See your
introduction manual or your applications manual for instructions on using
data diskettes.

NOTE: The small screws that came in this kit may have metric threads.  If
you lose one, your Radio Shack dealer can order a replacement.

(abo/BKL-01/23/96)