Digi-Mouse Controller (250-1015) Installation Faxback Doc. # 5536 Clock/Calendar Plus Board Be sure you have the following equipment: * Tandy 1000 PLUS DIGI-Mouse Controller/Calendar Board * Type CR 2320H 3-volt Lithium Coin Cell Battery (260-163), included with the board. * DIGI-Mouse (sold separately) * Tandy 1000 Memory PLUS Expansion Board (sold separately) * Installation guide that is included with the Memory PLUS Board As mentioned in the introduction to this manual, you new PLUS DIGI-Mouse Controller/Calendar board plugs into the Memory PLUS Expansion Board. The memory board, in turn, plugs into 1 of 3 option slots on the computer's main circuit board. We highly recommend that you have the mouse and memory boards installed by the service technicians at your Radio Shack Service Center. Doing so ensures expert installation, but also enables the technicians to quickly check to be sure all the equipment is functioning properly. If, however, you decide to install the boards yourself, follow the instructions in this chapter exactly. CONNECTING THE MOUSE BOARD TO THE MEMORY BOARD CAUTION: Do not stand on a carpeted floor during this procedure. Walking on carpets promotes the build-up of static electricity, which, if discharged while you are handling a circuit board, can destroy integrated circuits (IC's) on the board. 1. If your Memory PLUS Expansion Board is already installed, remove it by following these condensed instructions: Turn off your computer, disconnect all equipment, remove the computer's cover, discharge any built-up static electricity by touching a grounded metal object, unscrew the bracket, and remove the board. Remember to wait at least 10 seconds between disconnecting the equipment and removing the board. 2. If you plan to install additional memory, you might need to remove the jumper on your memory board and add memory IC's to the board. If so, perform these steps now so that you do not need to remove the mouse board later. The mouse board, once installed, covers jumper pins. See your Memory PLUS Expansion Board Installation Guide for information on reconfiguring the jumper and installing the IC's. 3. Discharge any built-up static electricity by touching a grounded metal object. 4. The memory board comes with a solid, metal bracket. To install the mouse board, you must replace this bracket with the one supplied with the mouse board. Loosen and remove the 2 screws that secure the solid bracket. Remove the bracket and save it for possible later use. 5. Attach to the memory board the bracket that has the cutout, securing it with the screws that held the original bracket. Do not over tighten the screws. 6. The clock function is backed up by a Lithium Coin Cell battery so that the correct time is retained when you turn off the computer. The battery has an estimated lifetime of more than a year. Install the battery now, by sliding it under the clip on the mouse board, positive side up. 7. Packaged with the mouse board are 3 white, nylon stand offs used to help support the mouse board. Insert one end of each stand off into 1 of the holes on the mouse board, as shown in Figure 2. Although the 2 ends of the stand offs are shaped differently, it does not matter which end you attach to the mouse board. 8. Hold the mouse board at a slight angle to the memory board so that its cable connector fits into the cutout. 9. Carefully align the mouse board's socket connector over the row of pins on the memory board as shown. Then, slowly lower the board onto the pins, maintaining the alignment so that the pins go into the corresponding holes on the socket. Be sure to keep the cable connector in the bracket. When the board is completely seated and is parallel to the memory board, check to see that all pins are fully inserted into the socket. If you encounter any resistance, stop. Do not force the board. You might have a bent pin that requires repair by a Radio Shack technician. 10. Snap each stand off into the corresponding hole on the memory board by applying pressure to the mouse board. 11. Using the 2 screws provided, secure the cable connector socket to the mounting bracket, as shown below. You are now ready to install your mouse/memory combination board ont the computer's main circuit board. To do so, follow the instructions in the next section. INSTALLING THE COMBINATION BOARD 1. WARNING: Be sure all equipment is turned off and disconnected. If any unit is on, you might damage the central processing unit or the board. Always wait at least 10 seconds between disconnecting the equipment and inserting or removing a board. 2. As before, touch a grounded metal object before beginning the installation, and DO NOT stand on a carpeted floor. 3. Remove the 2 screws on the front of the main unit. Then, remove the computer's cover by sliding it straight toward the front of the unit. 4. Rotate the main unit so that the back of it faces you. To the immediate right of the fan are 3 option slot covers, each fastened to the chassis by a sheet-metal screw. On the main circuit board, directly behind these covers, are 3 thin, black edge-connector sockets. You install the combination board in either the middle socket or the one on your right. 5. Remove the screw from the selected cover. Then, remove the cover by tilting it away from you and lifting it clear of the slot. Store it in a safe place for future replacement. 6. As you look at the computer from the back, check the upper right corner for the main circuit board for a small, multi-pronged metal connector. If your board: then: has the connector do NOT remove the short wire attached to one corner of your memory board. You connect this wire in Step 9. does NOT have remove the short wire attached to one corner the connector of your memory board. You do not need it. 7. Touch a grounded metal object. Now, grasp the combination board by its upper edges, and position it above the socket. Insert the combination board's bracket into the slot in the same way the slot covers are mounted. At the same time, apply even downward pressure, engaging the edge-connector in the socket. 8. Align the board's bracket so the U-shaped cutout is positioned over the screw hole. Replace the screw you removed earlier. Do not over tighten it. 9. If you did NOT remove the wire mentioned in Step 6, fasten the free end of it to 1 prong of the mult-pronged connector. 10. Replace the computer's cover, securing it with the screws previously removed. CONNECTING THE MOUSE With all the equipment turned off and disconnected, plug the DIGI-Mouse into the cable connector on the combination board. CHECKING THE MEMORY To be sure the computer is registering the correct amount of memory, follow these steps: 1. Re-connect all equipment, and turn on the computer and the monitor. You need not have a diskette in the drive. 2. The first message displayed is the amount of available memory. Suppose you install the memory board with its standard 256K RAM (you do not add IC's to it). Because your computer contains 128K of built-in RAM, your system has a total of 384K. Therefore, the screen displays: MEMORY SIZE = 384K If you see any other message, such as MEMORY FAULT ERROR, disconnect all equipment, and turn off your computer. Then, after waiting at least 10 seconds, remove the computer's cover to see if the memory board is completely seated in the socket. Recheck your jumper configuration, too. Then, run the memory check again. If you still get an error message, contact your Radio Shack store for assistance. Once your screen displays the correct amount of memory, you are ready to install the mouse/calendar software. Continue to Chapter 2 after taking not of the information below. NOTES: * Any time you plug your mouse board into your computer--whether initially upon installation--or because you removed the board for some reason, the battery signal might indicate that the battery is low. After you install the software, you can clear this false indication by using the CLOCKSET routine (described in Chapter 5). * When you need to replace the battery, remove the combination board, adhering to the precautions in Step 1 of "Connecting the Mouse Board to the Memory Board." Then, use an awl or a small screwdriver to pry up the old battery. (SMM/jlc-03/28/94)