Acer Extensa 5220 Service Guide for TravelMate 5320, 5720, 5720G, Extensa 5220 - Page 125

Index of Symptom-to-FRU Error Message LCD-Related Symptoms Symptom / Error LCD backlight doesn't work LCD is too dark LCD brightness cannot be adjusted LCD contrast cannot be adjusted Action in Sequence Enter BIOS Utility to execute "Load Setup Default Settings", then reboot system. Reconnect the LCD connectors. Keyboard (if contrast and brightness function key doesn't work). LCD inverter ID LCD cable LCD inverter LCD System board Reconnect the LCD connector LCD inverter ID LCD cable LCD inverter LCD System board LCD inverter ID LCD inverter LCD cable LCD System board Unreadable LCD screen Missing pels in characters Abnormal screen Wrong color displayed LCD has extra horizontal or vertical lines displayed. Indicator-Related Symptoms Symptom / Error Indicator incorrectly remains off or on, but system runs correctly Action in Sequence Reconnect the inverter board Inverter board System board Power-Related Symptoms Symptom / Error Power shuts down during operation Action in Sequence Power source (battery pack and power adapter). See "Power System Check" on page 103. Battery pack Power adapter Hard drive & battery connection board System board Power source (battery pack and power adapter). See "Power System Check" on page 103. Battery pack Power adapter Hard drive & battery connection board System board The system doesn't power-on. Chapter 4 115