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Chapter 4 93
Keyboard (one or more keys)
does not work.
1. Reseat the keyboard cable.
2. Keyboard
3. System board
Power shuts down during
operation.
1. Battery
2. AC Adapter
3. DC/DC & Charge board
4. System board
The system will not power-
on.
1. Battery
2. AC adapter
3. DC/DC & Charge boar
4. System board
The system will not power-
off.
1. DC/DC & Charge board
2. System board
Battery can’t be charged. 1. Battery
2. DC/DC & Charge board
3. IDE board
4. System board
System cannot detect the
PCMCIA.
PCMCIA slots assembly
System board
Memory count (size)
appears different from actual
size.
1. Enter BIOS Utility to execute load setup default
settings, then reboot system.
2. DIMM
3. System board
Speakers have noise or no
sound comes from system.
1. Speaker
2. System board
The system will not enter
Hibernation.
1. Keyboard (if control is from the keyboard)
2. Hard disk
3. System board
The system will not enter
Standby after closing the
LCD.
1. LCD cover switch
2. System board
Battery fuel gauge does not
go higher than 90%.
1. Remove battery pack and let it cool for 2 hours.
2. Refresh battery (continue to use battery until
power off, then charge battery).
3. Battery
4. DC/DC & charge board
5. System board
System configuration does
not match the installed
devices.
1. Enter BIOS Utility to execute load setup default
settings, then reboot system.
2. Reseat CD-ROM/DVD module.
System hangs intermittently. 1. Hard Disk/CD-ROM/DVD drive connector
2. Fan
3. System board
Symptom / Error FRU / Action in Sequence
720.book Page 93 Saturday, March 6, 1999 10:00 AM