Acer Aspire 4920 Service Guide - Page 113

Error Message List Error Messages Check or do the following in sequence: No beep, power-on indicator turns off and LCD is blank. T Power source (battery pack and power adapter). See "Power System Check" on page 99. T Ensure every connector is connected tightly and correctly. T Reconnect the DIMM. T LED board T Mainboard No beep, power-on indicator turns on and LCD is blank. T Power source (battery pack and power adapter). See "Power System Check" on page 99. T Reconnect the LCD connector T Hard disk drive T LCD inverter ID T LCD cable T LCD Inverter board T LCD T Mainboard No beep, power-on indicator turns on and LCD is blank. But you can see POST on an external CRT. T Reconnect the LCD connectors. T LCD inverter ID T LCD cable T LCD inverter board T LCD T Mainboard No beep, power-on indicator turns on and a T Ensure every connector is connected tightly and correctly. blinking cursor shown on LCD during POST. T Mainboard No beep during POST but system runs correctly. T Speaker T Mainboard Chapter 4 103