Acer Aspire 7738 Series Service Manual page 116

Power-Related Symptoms
The system doesn't power-off.
Battery can't be charged
PCMCIA-Related Symptoms
System cannot detect the PC Card
(PCMCIA)
PCMCIA slot pin is damaged.
Memory-Related Symptoms
Memory count (size) appears different from
actual size.
Speaker-Related Symptoms
In Windows, multimedia programs, no
sound comes from the computer.
Internal speakers make noise or emit no
sound.
Power Management-Related Symptoms
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
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Action in Sequence
Power source (battery pack and power adapter). See "Power
System Check" on page 97.
Hold and press the power switch for more than 4 seconds.
System board
See "Check the Battery Pack" on page 98.
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 26.
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 26.
LCD cover switch
System board
Chapter 4