1200 BPS Internal Modem  (250-1013)    Installation    Faxback Doc. # 4742

INSTALLATION IN YOUR COMPUTER

The modem is designed for easy installation in any compatible computer.
Because of its small size, the modem will fit in both short and standard-
length expansion slots.

1. Power to the computer must be turned off before proceeding with the rest
   of the installation.  Refer to the computer owner's manual for
   information on turning off the computer.

   WARNING:  To avoid static electricity buildup, which can destroy certain
   integrated circuits, touch a grounded metal object before handling any
   circuit board.  Do not stand on a carpeted floor while installing this
   board.

2. After the computer is turned off, remove the front panel (or rear panel)
   screws securing the computer's cover, and slide the cover forward
   (or backward).  Save these screws so that you can replace the computer's
   cover at the end of installation.  Refer to the computer owner's manual
   for more information on removing the computer's cover.

3. The modem board fits in a half-card expansion slot, but it may be
   installed into a full-card slot if desired.  Decide which expansion
   slot you want to' install your modem in.  To remove the expansion slot's
   rear panel blank card bracket, remove its fastening screw and lift the
   bracket straight up. Save the screw for attaching the modem board later.

4. Plug the modem board into the empty expansion slot.  Then fasten the
   board to the computer using the screw that was removed from the blank
   card bracket in Step 3.

5. Replace the computer's cover, securing it with the screws previously
   removed.

6. There are two modular phone connectors on the modem.  Connect one end of 
   the modular phone cable supplied with the modem into either of these two
   jacks.  These jacks are identical; it does not matter which one you use.

   Connect the other end of this modular cable to the phone jack on the
    wall.

     NOTE:  You can connect your standard telephone to the second jack on
     the back of the modem.  This jack is provided for your convenience so
     that you can continue to use your telephone normally.  As long as you
     leave your phone and modem connected, you can continue to use your
     telephone even when your computer is turned off.

INSTALLATION ON A PC-COMPATIBLE

PRELIMINARY PROCEDURES

1)  WARNING:  TURN OFF ALL EQUIPMENT.  damage the central processing unit
or the board.  Wait at least 10 seconds before removing or inserting any
board into the computer.

2)  To avoid static electricity buildup, which can destroy certain
integrated circuits, touch a grounded metal object before handling any
circuit board.  Do not stand on a carpeted floor while installing this
board.

3)  Remove the 2 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)  Before installing the PC Modem, set the four options switches to meet
 your installation requirements.

1200 BAUD PC MODEM

1)  To install the PC Modem, rotate the chassis so that the fan faces you.
To the immediate right of fan are 3 option slot covers, each fastened to the
rear of the chassis by a sheet-metal screw.  On the main printed circuit 
board directly behind these covers are 3 thin, black edge-connectors.  
Select any empty socket as the location for the PC-Modem.  It makes no 
difference which you use.  However, if you plan to install a hard disk 
controller board at some later date, you should insert this Board in the 
position on the extreme right as you face the rear of the computer.  This 
will eliminate the need to remove and re-insert this board at that time.

2)  Remove the sheet-metal screw from the top of the selected cover.  Tilt
the metal strip away from you and lift the strip so the tab on the panel 
clears the bottom of the slot.  Store the cover in a safe place for future 
replacement.

3)  Discharge any static buildup by touching a grounded metal object.  Now 
grasp the PC Modem by its upper edges and position it above the black 
edge-connector socket.  Insert the lower tab on the board's mounting 
bracket into the slot on the rear of the chassis, in the same way the 
option slot covers are mounted.  At the same time, apply even downward 
pressure engaging the edge-connector into its socket.  Align the entire 
card so that the U-shaped cutout on the top of the option card is 
positioned over the screw-hole on the rear of the chassis.  Replace the 
screw you removed before and tighten it to secure the board.  Do not 
overtighten the screw.

4)  Replace the top cover, securing it with the screws previously removed.

5)  There are two modular phone connectors on the rear panel of the PC Modem.
Connect one end of the modular phone cable supplied with the modem into 
either of these two jacks.  These jacks are identical; it does not matter 
which one you use.

Connect the other end of this modular cable into your wall jack.  The PC 
Modem is now ready for use.

    Note:  The second jack on the back of the PC Modem can be used to
connect your standard telephone.  This is provided for your convenience.
You may plug your telephone into this jack and continue to use it normally.
The PC Modem can be left connected even when your computer is turned off.
It will not affect the normal use of your phone.

(dkh-07/28/93)