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Speaker-Related Symptoms
Symptom/Error FRU/Action in Sequence
Speakers make noise or
no sound comes from
system.
1. Speakers
2. System board
In DOS or Windows
multimedia programs, no
sound comes from the
computer.
1. Speakers
2. System board
Power Management-Related Symptoms
Symptom/Error FRU/Action in Sequence
The system will not enter
hibernation mode.
1. Keyboard (if control is from the
keyboard)
2. Hard disk drive
3. System board
The system will not wake
up from hibernation
mode.
1. Keyboard (if control is from the
keyboard)
2. Hard disk drive
3. System board
The system will not enter
suspend mode after
closing the LCD.
1. Reseat suspend board cable
2. Suspend board ASM
3. System board
Battery fuel-gauge does
not go higher than 90%.
1. Remove battery ASM and let it
cool for 2 hours.
2. Refresh battery (continue using
battery in BIOS Setup mode until
power off, then charge battery).
3. Battery
4. System board
System configuration
does not match the
installed devices.
Load Setup Defaults and reboot the
system.
System hangs
intermittently.
1. Fan ASM
2. System board
Peripheral-Device-Related Symptom
Symptom/Error FRU/Action in Sequence
External display does not
work correctly.
1. CRT adapter
2. System board
USB does not work
correctly.
1. Power board ASM
2. System board
24 ThinkPad s30, s31