Acer TravelMate 520 TravelMate 520 Service Guide - Page 79

No-Beep Symptoms Symptom / Error No beep, power-on indicator turns off and LCD is blank. No beep, power-on indicator turns on and LCD is blank. No beep, power-on indicator turns on and LCD is blank. But you can see POST on an external CRT. No beep, power-on indicator turns on and a blinking cursor shown on LCD during POST. No beep during POST but system runs correctly. Action in Sequence Power source (battery pack and power adapter). Power System Check. Ensure every connector is connected tightly and correctly. Reconnect the DIMM. CPU board System board. Power source (battery pack and power adapter). Power System Check. Reconnect the LCD connectors Hard disk drive LCD inverter ID LCD cable Inverter LCD System board Reconnect the LCD connectors. LCD inverter ID LCD cable LCD inverter LCD System board Ensure every connector is connected tightly and correctly. System board Speaker Audio board System board Chapter 4 73