Acer TravelMate 4070 TravelMate 4070 Service Guide - Page 92

Power Management-Related Symptoms Symptom / Error System hangs intermittently. Action in Sequence Reconnect hard disk/CD-ROM drives. Hard disk connection board System board Peripheral-Related Symptoms Symptom / Error System configuration does not match the installed devices. External display does not work correctly. USB does not work correctly Print problems. Serial or parallel port device problems. Action in Sequence Enter BIOS Setup Utility to execute "Load Default Settings", then reboot system. Reconnect hard disk/CD-ROM/diskette drives. Press Fn+F5, LCD/CRT/Both display switching System board System board Ensure the "Parallel Port" in the "Onboard Devices Configuration" of BIOS Setup Utility is set to Enabled. Onboard Devices Configuration Run printer self-test. Printer driver Printer cable Printer System Board Ensure the "Serial Port" in the Devices Configuration" of BIOS Setup Utility is set to Enabled. Device driver Device cable Device System board Keyboard/Touchpad-Related Symptoms Symptom / Error Keyboard (one or more keys) does not work. Touchpad does not work. Action in Sequence Reconnect the keyboard cable. Keyboard System board Reconnect touchpad cable. Touchpad board System board Modem-Related Symptoms Symptom / Error Action in Sequence Internal modem does not work correctly. Modem phone port modem combo board System board NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on page 89. 87 Chapter 4