Trackstar Board  (250-1028)         Installation       Faxback Doc. #5298

The following precautions should be noted before the installation process is
begun:

    1.  All power should be turned off and all cables disconnected
    2.  The workspace should be clean
    3.  All diskettes should be removed from the area
    4.  Each step of the installation process should be followed CAREFULLY
    5.  These tools will be needed:
        - Phillips screwdriver
        - Metric socket wrench
        - Straight screwdriver
        - Nutholder to hold hexscrew on left side of Drive A

THE TRACKSTAR BOARD

Pages 27 and 28 contain diagrams of the components that are a part of the
Trackstar system. These diagrams should be studied carefully before
installation begins, and subsequently throughout the installation process.
Familiarity with each part will help significantly in installing this board.

THE INSTALLATION PROCESS

1. Pre-Installation Check
   Before beginning these steps, check to see that all power cords are
   disconnected and all peripheral devices turned off and unplugged.

2. Remove the Tandy 1000 cover. This is attached by two Phillips screws in
   the front of the case as shown in the diagram (in manual). When the screws
   have been removed, the cover will then slide forward.

3. Use the following diagram to help identify the various internal features
   of the Tandy 1000 computer.

  ┌──────────────────┬─────────────────────────────┐
  │  Slot 1  Slot 3  │                Power        │
  │    ┌┐  ┌┐  ┌┐    │                Supply       │
  │    ││  ││  ││    └─┬───────┬───────────────────┤
  │    ││  ││  ││      │       └─┐         Drive   │
  │    └┘  └┘  └┘      │   Power └─┐    Controller │
  │      Slot 2        │ Connector └─┐   ┌───────┐ │
  │                    │           ┌─┴─┐ │││││││││ │
  │                    ├───────────┴───┴─┤│││││││├─┤
  │                    │                 └───────┘ │
  │                    │                           │
  │                    │                           │
  │                    │        Disk Drives        │
  │                    │                           │
  │                    │                           │
  │                    │                           │
  └────────────────────┴───────────────────────────┘

4. Remove both Tandy disk drives as follows:

   a. Unplug the ribbon cable and the power connector.
   b. Unscrew the three bolts that fasten the disk drives to the disk drive
      housing.
   c. Lift the drives free.
   d. The figure below shows the location of the items that must be removed.
   e. Be sure to note which drive is A and which is B.

  ┌──────────────────┬─────────────────────────────┐
  │  Slot 1  Slot 3  │                Power        │
  │    ┌┐  ┌┐  ┌┐    │                Supply       │
  │    ││  ││  ││    └─┬───────┬───────────────────┤
  │    ││  ││  ││      │       └─┐         Drive   │
  │    └┘  └┘  └┘      │   Power └─┐    Controller │
  │      Slot 2        │ Connector └─┐   ┌───────┐ │
  │                    │           ┌─┴─┐ │││││││││ │
  │                    ├───────────┴───┴─┤│││││││├─┤
  │                    │                /└───────┘ │
  │                    │    Ribbon Cable           │<--
  │                    │                           │  Remove
  │          Remove    │        Disk Drives        │   These
  │           this  -->│                           │   Bolts
  │           bolt     │                           │<--
  │                    │                           │
  └────────────────────┴───────────────────────────┘

5. Locate test leads 7 and 8 on each disk drive. Attach the capacitors across
   these two leads on both disk drives.

6. Replace Disk Drives

   a. Make sure that drives A and B are both returned to their original
      positions.
   b. Reconnect the disk drive cables, as they were originally connected, to
      both disk drives.

7. Disconnect the disk drive cable from the disk controller. This is located
   on the mother board.

8. OPTIONAL STEP to allow for the installation of an Apple external drive.

   Thread the cable which is connected to the Apple drive from the outside
   to the inside of the Tandy 1000 through the parallel printer port at the
   rear of the computer. The cable runs between the motherboard and the
   underside of the power supply housing.

9. Select the video cable that matches the chosen monitor as follows:

   Color Monitor         RGB Video Cable with 8 pin molex connector
   Monochrome Monitor    Composite Video Cable with 4 pin molex connector

10. Select the slot into which the Trackstar board will be mounted. Slot
    three is the preferred location for this board. Remove the empty slot
    bracket and feed the molex connector through the opening of the expansion
    slot. This is located at the rear of the Tandy 1000.

(DTC/jlc-03/28/94)