3900/3950HD/3950C (250-3580/86/87) Troubleshooting Faxback Doc. # 2795 Q. When I turn on the computer, nothing happens. What's the matter? A. If your system is running off battery power, the batteries are probably completely exhausted. Attach the AC adapter and recharge the batteries. If you are running off the adapter, check to make sure that it is plugged into a live power source. If the power indicator light is on, it indicates that the power source is good and that the adapter is functioning properly. If there is a battery in the computer, turn the power switch "off", remove the battery, and then turn on the computer. If there is still no response, consult your dealer for an appraisal of the problem. Q. The computer keeps beeping at me. Have I done something wrong? A. No, but you may be about to. The computer is trying to tell you that batteries power are dangerously low. Save your work, quit immediately, and replace the batteries or use the AC adapter as a power source. Q. When I turn on the computer the hard disk drive does not seem to work. What's wrong? A. Access the SETUP program and make sure that the "Hard Disk 1" setting displays the correct setting for the computer's drive. If the setting is different, the hard disk won't work properly or might not work at all. Q. After I make changes in SETUP nothing happens. What's wrong? A. Pressing the F6 in the Esc menu exits SETUP, but it does not write any changes to CMOS RAM. In order to save the changes you have made in SETUP, you must press F4 in the Esc menu to exit SETUP. BOOTING UP Q. When I turn on the computer, I can't get an operating system prompt to appear on the screen, although the computer seems to be running. A. Make sure that you have properly installed an operating system on the hard disk. Check that the brightness and contrast controls are properly adjusted. Try using a system floppy diskette to make sure the operating system will load properly. If it won't, consult your dealer or technical support. Q. At boot up, the computer tells me there is a memory mismatch error. How do I fix this? A. Enter the Setup program and change the base memory default to 640 KB and check all memory above 1024KB is entered in the "Extended Memory" field. If the memory installed in 2MB then the default is 1024KB. THE LCD DISPLAY Q. I know the computer is on, but the LCD screen is blank. Is it broken? A. Probably not. More than likely, either the screen contrast or brightness controls are improperly adjusted or you've accidentally put the computer into Suspend Mode by pressing the Suspend/Resume switch. Press the switch again to reactivate the display by pressing and set the display for an external monitor. Press the space bar first to see if the computer is in Sleep Mode. If the screen image doesn't come back, check the contrast and brightness adjustments. If the problem persists, press the combination to toggle back to LCD mode. If, after all this, the screen remains blank consult your dealer for technical support. KEYBOARD Q. The cursor moves to different locations when I try to use the Pg Up, Pg Dn, End, or Home Keys. A. Remember that these keys share dual functions with the arrow keys. You must use the Fn key to access all functions that appear in blue on the front of the keys. Q. I can't get the embedded NUMERIC keypad to work. A. Make sure that the key is pressed and the PAD Lock status pattern is on if you want to access the keypad. Make sure the PAD Lock is off when you want to use the typewriter functions of these keys. Press the Fn key to temporarily access the embedded NUMERIC keypad while you hold down the key. Q. When I type, I get numbers when I should get letters. What's wrong? A. The NUMERIC keypad is enabled. Disable it by pressing the Fn and toggling Num Lock key. The Pad Lock light should go out. EXTERNAL MONITOR Q. Is it possible to use both an external monitor and the LCD screen at the same time? A. Yes, the Notebook provides three display configuration: LCD, monitor, and Simul scan (LCD & MONITOR active at the same time). The three modes are toggled on and off by pressing . MOUSE OR OTHER POINTING DEVICE Q. I connected a Mouse to the computer but it won't work? Why is this? A. First make certain you followed the manufacturer's installation instructions completely and did everything necessary to install the mouse properly. If you installed the mouse correctly and it doesn't work, check two things: 1. Make sure COM1/COM2 option on page 3 of the Setup Program is Tracking Ball/COM2. 2. Connect the device driver to COM1 if COM1/Modem is selected, or COM2 for setting Tracking Ball/COM2. (smc-02/18/94)