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)