Acer TravelMate 420 Service Manual page 95

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.
Battery fuel gauge in Windows doesn't go higher
than 90%.
System hangs intermittently.
Chapter 4
Action in Sequence
See "System Diagnostic Diskette" on page 52. Please run Sycard 32
Bit test.
PCMCIA slot assembly
Main board
PCMCIA slot assembly
Action in Sequence
DIMM
Main board
Action in Sequence
See "Sound Check" on page 82
Audio driver
Speaker
Main board
See "Sound Check" on page 82
Speaker
Main board
Action in Sequence
Keyboard (if control is from the keyboard)
Hard disk drive
Main board
Press Fn+F4 and see if the computer enters hibernation mode.
Touchpad
Keyboard
Hard disk connection board
Hard disk drive
Main board
LCD cover switch
Main board
Hard disk connection board
Hard disk drive
Main board
LCD cover switch
Main board
Remove battery pack and let it cool for 2 hours.
Refresh battery (continue use battery until power off, then charge
battery).
Battery pack
Main board
Reconnect hard disk drives.
Hard disk drive connector
Main board
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