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Indicator-Related Symptoms
Symptom/Error FRU/Action in Sequence
Indicator incorrectly
remains off or on, but
system runs cor-
rectly.
Reconnect the indicator board
connector.
Indicator board
Power-Related Symptoms
Symptom/Error FRU/Action in Sequence
Power shuts down
during operation.
Go to “Power Systems
Check” on page 111.
AC Adapter
Battery pack
Audio PCB
DC/DC charger
System board
The system doesn't
power on.
Go to “Power Systems
Check” on page 111.
AC Adapter
DC/DC charger
System board
The system doesn't
power off.
Go to “Power Systems
Check” on page 111.
Hold and press the power
switch for more than 4
seconds.
DC/DC charger
System board
Battery can't be
charged.
Go to “Power Systems
Check” on page 111.
Battery pack
DC/DC charger
System board
Memory-Related Symptoms
Symptom/Error FRU/Action in Sequence
Memory count (size)
appears different
from the actual size.
Go to “Memory Check” on
page 113.
Enter BIOS Utility and
execute "Load Setup Default
Settings"; then reboot the
system.
DIMM
System board
128 ThinkPad i Series 1400 HMM