Acer Aspire 5520 Service Manual page 97

Power-Related Symptoms
Symptom / Error
Battery can't be charged
PCMCIA-Related Symptoms
Symptom / Error
System cannot detect the PC Card (PCMCIA)
PCMCIA slot pin is damaged.
Memory-Related Symptoms
Symptom / Error
Memory count (size) appears different from
actual size.
Speaker-Related Symptoms
Symptom / Error
In Windows, multimedia programs, no sound
comes from the computer.
Internal speakers make noise or emit no sound.
Power Management-Related Symptoms
Symptom / Error
The system will not enter hibernation
The system doesn't enter hibernation mode and
four short beeps every minute.
The system doesn't enter standby mode after
closing the LCD
The system doesn't resume from hibernation
mode.
The system doesn't resume from standby mode
after opening the LCD.
Chapter 4
Action in Sequence
See "Check the Battery Pack" on page 90.
Battery pack
System board
Action in Sequence
PCMCIA slot assembly
System board
PCMCIA slot assembly
Action in Sequence
Enter BIOS Setup Utility to execute "Load Default Settings, then
reboot system.
DIMM
System board
Action in Sequence
Audio driver
Speaker
System board
Speaker
System board
Action in Sequence
See "Save to Disk (S4)" on page 45.
Keyboard (if control is from the keyboard)
Hard disk drive
System board
o
Press Fn+ and see if the computer enters hibernation mode.
Touchpad
Keyboard
Hard disk connection board
Hard disk drive
System board
See "Save to Disk (S4)" on page 45.
LCD cover switch
System board
See "Save to Disk (S4)" on page 45.
Hard disk connection board
Hard disk drive
System board
See "Save to Disk (S4)" on page 45.
LCD cover switch
System board
100