Lenovo ThinkPad i Series 1400 Hardware Maintenance Manual (August 1999) - Page 50

Power-Related Symptoms, Memory-Related Symptoms

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Symptom/Error Indicator incorrectly remains off or on, but system runs correctly. FRU/Action in Sequence 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

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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