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IBM ThinkPad R30 Hardware Maintenance Manual: Memory-related Symptom; Audio-related Symptoms

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Symptom/Error
The system doesn't
power on.
The system doesn't
power off.
Battery can't be charged.

Memory-Related Symptom

Symptom/Error
Memory count (size)
appears different from
the actual size. (The
main memory with 8MB
of VGA.)
Audio-Related Symptoms
Symptom/Error
Internal speakers make
noise or emit no sound.
External speakers make
noise or emit no sound.
In DOS or Windows,
multimedia programs, no
sound comes from the
computer. (Only system
beeps are heard at
power-on.)
FRU/Action in Sequence
v Go to "Power systems checkout" on
page 35.
v AC Adapter
v Battery assembly
v Keyboard
v System board
v Go to "Power systems checkout" on
page 35.
v Hold and press the power switch
for more than 4 seconds.
v Keyboard
v System board
v Go to "Power systems checkout" on
page 35.
v Battery assembly
v System board
FRU/Action in Sequence
v Go to "FRU tests" on page 58.
v Enter BIOS Utility and execute
"Load Setup Default Settings"; then
reboot the system.
v DIMM
v System board
FRU/Action in Sequence
v Speaker volume control
v Go to "FRU tests" on page 58.
v Speaker(s)
v Speaker volume control
v Go to "FRU tests" on page 58.
v Speaker(s)
v Speaker volume control
v Go to "FRU tests" on page 58.
v Speaker(s)
ThinkPad R30 and R31
49

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