Lenovo ThinkPad Edge E431 Hardware Maintenance Manual - Page 48

Error messages, Beep symptoms, Table 3. Error messages, Table 4. Beep symptoms

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Error messages Table 3. Error messages Symptom or error (beeps, if any) Fan error. Thermal sensing error. 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. 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. FRU or action, in sequence 1. Replace the fan. 2. Apply thermal grease. 3. Replace the system board. Replace the system board. Replace the battery. Replace the battery. 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. Beep symptoms Table 4. Beep symptoms Symptom or error One short beep, pause, three short beeps, pause, three more short beeps, pause, and one short beep Three short beeps, pause, one short beep, pause, one more short beep, pause, and three short beeps One long and two short beeps Five short beeps FRU or action, in sequence 1. Replace the memory module. 2. Replace the system board. Remove the device from ExpressCard slot. Replace the system board. Replace the system board. No-beep symptoms Table 5. No-beep symptoms Symptom or error No beep, power-on indicator on, LCD blank, and no POST. No beep, power-on indicator on, and LCD blank during POST. The power-on password prompt appears. The hard-disk password prompt appears. FRU or action, in sequence 1. Ensure that every connector is connected tightly and correctly. 2. Reseat memory module. 3. Replace the system board. 1. Reseat memory module. 2. Replace the system board. A power-on password or a supervisor password is set. Type the password and press Enter. A hard-disk password is set. Type the password and press Enter. 42 Hardware Maintenance Manual

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Error messages
Table 3. Error messages
Symptom or error (beeps, if any)
FRU or action, in sequence
Fan error.
1.
Replace the fan.
2. Apply thermal grease.
3. Replace the system board.
Thermal sensing error.
Replace the 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.
Replace the battery.
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.
Beep symptoms
Table 4. Beep symptoms
Symptom or error
FRU or action, in sequence
One short beep, pause, three short beeps, pause, three
more short beeps, pause, and one short beep
1.
Replace the memory module.
2. Replace the system board.
Three short beeps, pause, one short beep, pause, one
more short beep, pause, and three short beeps
Remove the device from ExpressCard slot.
One long and two short beeps
Replace the system board.
Five short beeps
Replace the 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.
Ensure that every connector is connected tightly
and correctly
.
2. Reseat memory module.
3. Replace the system board.
No beep, power-on indicator on, and LCD blank during
POST.
1.
Reseat memory module.
2. Replace the 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.
42
Hardware Maintenance Manual