Acer Extensa 5220 Service Guide for TravelMate 5320, 5720, 5720G, Extensa 5220 - Page 127

Power Management-Related Symptoms Symptom / Error The system doesn't resume from hibernation mode. Action in Sequence See "Save to Disk (S4)" on page 38. Hard disk connection board Hard disk drive System board See "Save to Disk (S4)" on page 38. LCD cover switch System board Remove battery pack and let it cool for 2 hours. Refresh battery (continue use battery until power off, then charge battery). Battery pack System board Reconnect hard disk/CD-ROM drives. Hard disk connection board System board The system doesn't resume from standby mode after opening the LCD. Battery fuel gauge in Windows doesn't go higher than 90%. System hangs intermittently. 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. 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 Serial or parallel port device problems. Keyboard/Touchpad-Related Symptoms Symptom / Error Keyboard (one or more keys) does not work. Action in Sequence Reconnect the keyboard cable. Keyboard System board Chapter 4 117