Acer TravelMate 520 TravelMate 520 Service Guide - Page 81

Power-Related Symptoms Symptom / Error Battery can't be charged Action in Sequence Power System Check Battery pack System board PCMCIA-Related Symptoms Symptom / Error System cannot detect the PC Card (PCMCIA) PCMCIA slot pin is damaged. Action in Sequence PCMCIA slot assembly System board PCMCIA slot assembly Memory-Related Symptoms Symptom / Error Action in Sequence Memory count (size) appears different from actual size. Enter BIOS Setup Utility to execute "Load Default Settings, then reboot system. DIMM System board Speaker-Related Symptoms Symptom / Error In DOS or Windows, multimedia programs, no sound comes from the computer. Internal speakers make noise or emit no sound. Action in Sequence Press Fn-F8, Speaker ON/OFF control. Audio driver Speaker Audio board System board Press Fn-F8, Speaker ON/OFF control. Speaker Audio board System board Power Management-Related Symptoms Symptom / Error The system will not enter hibernation The system doesn't enter hibernation mode and four short beeps every minute. The system doesn't enter standby mode after closing the LCD The system doesn't resume from hibernation mode. Action in Sequence Keyboard (if control is from the keyboard) Hard disk drive System board Check with Sleep Manager. Hibernation Mode Press Fn+F4 and see if the computer enters hibernation mode. Touchpad Keyboard Hard disk connection board Hard disk drive System board Standby Mode LCD cover switch System board Hibernation Mode Hard disk connection board Hard disk drive System board Chapter 4 75