TANDY 2500 RSX  (250-1620/1621)    Additional Drives    Faxback Doc. # 1887

Three storage devices can be installed in the drive bays. The two upper
bays support low-profile (maximum height, 1") 3 1/2" devices. The lower
bay supports a half-height, 5 1/4" device or a standard 3 1/2" device.

* Install internal hard drives in the 3 1/2" bay, the 5 1/4" drive bay, or
  the expansion adapter area. The SmartDrive (IDE hard drive) connector in
  your computer supports up to two internal hard drives.
* Install diskette drives in the 3 1/2" or 5 1/4" drive bay.
* To remove the 3 1/2" panel, press down on the center tab from inside the
  cover. This panel is replaceable.
* To remove the 5 1/4" panel, press down on the panel from outside the 
  cover.

If you install a hard drive that is not a SmartDrive, you need to install 
an expansion adapter for the drive. Refer to the drive and adapter 
documentation for instructions.

Some installations required additional mounting hardware. For example, you
might need to purchase a 3 1/2" to 5 1/4" disk drive adapter and an
L-bracket to install some 3 1/2" drives in the 5 1/4" bay. Mounting 
hardware is available at your computer dealer.

Installing a 3 1/2" Diskette Drive:

Use the following procedure to install a 3 1/2" diskette drive:

1. Open the computer to gain access to the 3 1/2" drive bay.
2. Select the appropriate mounting holes on the diskette drive.
3. Slide the drive into the 3 1/2" drive bay. With the drive resting on the
   center rail, align the mounting holes on the side of the drive with the
   two mounting holes on the side of the carriage.
4. Mount the diskette drive in the bay by installing four screws as
   illustrated. Remove the plastic card from the 5 1/4" bay. To install one
   of the bottom screws, you must insert the screwdriver through the hole 
   in the 5 1/4" bay.
5. Loosen the diskette drive bale connector from the cable attached to the
   factory-installed diskette drive. Pin 1 of the connector is labeled.
   Align Pin 1 of the cable connector with Pin 1 of the drive connector on
   the back of the diskette drive. Then, attach the cable connector to the
   drive connector.
6. Run the setup utility to complete the installation.

Installing a 3 1/2" Hard Drive:

Use the following procedure to install a 3 1/2" hard drive. Refer to the
drive installation guide for instructions on adjusting drive components,
connecting the drive cable, and selecting mounting holes on the drive. You
will also need information from the drive installation guide to run the
setup utility after installing the drive.

1. Open the computer to gain access to the 3 1/2" drive bay.
2. Select the appropriate mounting holes on the drive.
3. Slide the drive into the 3 1/2" drive bay. With the drive resting on the
   center rail, align the mounting holes on the side of the drive with the
   two mounting holes on the side of the carriage.
4. Mount the drive in the bay by installing the screws from the side and
   bottom.
5. If you are installing a Smartdrive, attach the remaining cable connector
   to the SmartDrive connector on the main logic board. If you are 
   installing any other type of hard drive, refer to the drive 
   documentation for instructions.
6. Attach a power cable from the computer power supply to the drive.
7. Run the setup utility to update your system configuration by identifying
   the drive.

CAUTION: After installing the hard drive, it might be necessary to park the
drive heads before opening the carriage or moving the computer. Refer to 
the drive documentation for this information.

Installing a 5 1/4" Drive:

Use the following procedure to install a 5 1/4" drive.

1. Open the computer to gain access to the 5 1/4" drive bay in the 
   carriage.
2. If you are installing a diskette drive or a CD-ROM drive, remove the
   plastic card from the bottom of the 5 1/4" bay and remove the panel from
   the computer cover.
3. Select the appropriate mounting holes for the drive. Refer to your drive
   documentation.
4. Slide the drive into the bay. Align the appropriate mounting holes in 
   the drive with the three mounting holes on the bottom of the carriage.
5. Mount the drive in the bottom of the carriage, using the screws included
   in your drive kit.
6. If you are installing a diskette drive, loosen the second diskette drive
   connector from the cable attached to the factory-installed diskette 
   drive.  Pin 1 of the cable connector is indicated by a stripe on the 
   cable. Refer to the drive documentation to locate Pin 1 of the connector
   on back of the diskette drive. Align Pin 1 of the cable connector with 
   Pin 1 of the diskette drive connector. Then, press the cable connector 
   onto the diskette drive connector.

To install a SmartDrive:

* Install the drive as described in "Installing a 3 1/2" Hard Drive." To
  install a 3 1/2" SmartDrive in the 5 1/4" bay, use the mounting holes on
  the bottom of the drive.
* Connect a SmartDrive data/controller cable between the SmartDrive and the
  40-pin SmartDrive connector on the main logic board. The cable supports 
  up to two SmartDrives. The SmartDrive cable and connector are keyed to 
  ensure that the connectors are aligned properly.
* Connect a power cable from the power supply to the power connector on the
  hard drive.

To connect an unkeyed IDE cable, align Pin 1 of the cable connector with 
Pin 1 of the main logic board connector. Refer to "Main Logic Board Layout"
to locate the SmartDrive connector. The drive cable might have a stripe to
indicate Pin 1 of the cable connector. Pin 1 of the main logic board
connector is indicated by a dot or a 1 printed on the board.

After installing a SmartDrive (or any hard disk drive), run the setup
utility to update your system configuration.

Adding a Hard Drive:

There are three options to use in setting up or changing the system 
configuration for hard drives. Choose one of the following:

* When you install a hard drive, record the drive type number and the drive
  parameters, (such as the number of cylinders and heads). Run the setup
  utility and match the configuration to the list provided.
* If an exact match to your configuration is not available, choose the Any
  (Non-standard Hard Disk) and enter your drive parameters.
* The setup utility for the computer includes and AUTO option that enables
  the system to automatically configure an IDE drive for use. If you select
  AUTO, there is no need to enter cylinder, sector, or other specific
  configuration parameters to configure a drive with setup. The AUTO 
  options does not support all drives.

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