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
.
This system does not support batteries that are not
genuine Lenovo-made or authorized. This 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
.
Beep symptoms
Table 4. Beep symptoms
Symptom or error
FRU or action, in sequence
One beep and a blank, unreadable, or flashing LCD.
1.
Reseat the LCD connector
.
2. LCD assembly.
3. External CRT.
4. System board.
One long and two short beeps, and a blank or unreadable
LCD.
1.
System board
.
2. LCD assembly.
3. DIMM.
Two short beeps with error codes.
POST error. See “Numeric error codes” on page 36.
Two short beeps and a blank screen.
1.
System board
.
2. DIMM.
Three short beeps, pause, three more short beeps, and
one short beep.
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep.
1.
DIMM
.
2. System board.
Only the cursor appears.
Reinstall the operating system
.
Four cycles of four short beeps and a blank screen.
System board
(security chip)
Five short beeps and a blank screen.
System board
No-beep symptoms
Table 5. No-beep symptoms
Symptom or error
FRU or action, in sequence
No beep, power-on indicator on, LCD blank, and no
POST.
1.
Make sure that every connector is connected
tightly and correctly
.
2. DIMM.
3. System board.
No beep, power-on indicator on, and LCD blank during
POST.
1.
Reseat DIMM
.
2. System board.
Chapter 4
.
Related service information
37
Summary of Contents for THINKPAD X121E
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Page 16: ...DANGER DANGER VORSICHT VORSICHT VORSICHT 10 Hardware Maintenance Manual ...
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