Acer Aspire 7520 Service Manual page 85

Error Message List
No beep Error Messages
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.
Chapter 4
FRU/Action in Sequence
Power source (battery pack and power adapter). See "Power
System Check" on page 73..
Ensure every connector is connected tightly and correctly.
Reconnect the DIMM.
LED board.
System board.
Power source (battery pack and power adapter). See "Power
System Check" on page 73..
Reconnect the LCD connector
Hard disk drive
LCD inverter ID
LCD cable
LCD 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
System board
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