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Error messages
Table 3. Error messages
Symptom or error (beeps, if any)
FRU or action, in sequence
Fan error 1. Fan.
2. Thermal grease.
3. System board.
Thermal sensing error
System board.
The battery installed is not supported by this system
and will not charge. Please replace the battery with the
correct Lenovo battery for this system. Press the ESC
key to continue.
Unauthorized battery is connected to the system. Press
the ESC to continue.
This system does not support batteries that are not
genuine Lenovo-made or authorized. The system will
continue to boot, but may not charge unauthorized
batteries.
Attention: Lenovo has no responsibility for the
performance or safety of unauthorized batteries, and
provides no warranties for failures or damage arising out
of their use.
Replace the battery with the correct Lenovo battery for
this system.
No-beep symptoms
Table 4. No-beep symptoms
Symptom or error
FRU or action, in sequence
No beep, power-on indicator on, LCD blank, and no
POST.
1. Ensure that every connector is connected tightly
and correctly.
2. System board.
No beep, power-on indicator on, and LCD blank during
POST.
System board.
The power-on password prompt appears. A power-on password or a supervisor password is set.
Type the password and press Enter.
The hard-disk password prompt appears. A hard-disk password is set. Type the password and
press Enter.
Beep symptoms
Table 5. Beep symptoms
Problem
Solution
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep
The system board has a problem. Have the computer
serviced.
Three short beeps, pause, one short beep, pause, one
more short beep, and three short beeps
PCI resource allocation failure. Power off the computer
and remove the PCI devices. If the beeps persist, have
the computer serviced.
One long and two short beeps
The video function has a problem. Have the computer
serviced.
Four cycles of four short beeps
The Security Chip has a problem. Have the computer
serviced.
38 Hardware Maintenance Manual