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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 25.
AC Adapter
Battery pack
Audio and battery function
connection board
Charger board
System board
The system doesn't
power on.
Go to “Power Systems
Check” on page 25.
AC Adapter
Charger board
System board
The system doesn't
power off.
Go to “Power Systems
Check” on page 25.
Hold and press the power
switch for more than 4
seconds.
Charger board
System board
Battery can't be
charged.
Go to “Power Systems
Check” on page 25.
Battery pack
Charger board
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 27.
Enter BIOS Utility and
execute "Load Setup Default
Settings"; then reboot the
system.
DIMM
System board
42 ThinkPad i Series 1400 HMM