Acer Aspire 6920 Acer Aspire 6920 / 6920G Notebook Service Guide - Page 92

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 Unreadable LCD screen Missing pels in characters Abnormal screen Wrong color displayed LCD has extra horizontal or vertical lines displayed. 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 Indicator-Related Symptoms Symptom / Error Action in Sequence Indicator incorrectly remains off or on, but system runs correctly Reconnect the inverter board Inverter board System board Power-Related Symptoms Symptom / Error Power shuts down during operation The system doesn't power-on. The system doesn't power-off. Action in Sequence Power source (battery pack and power adapter). See "Power System Check" on page 81. Battery pack Power adapter Hard drive & battery connection board System board Power source (battery pack and power adapter). See "Power System Check" on page 81. Battery pack Power adapter Hard drive & battery connection board System board Power source (battery pack and power adapter). See "Power System Check" on page 81. Hold and press the power switch for more than 4 seconds. System board 92 Chapter 4