Numeric Error Codes; Error Messages; No-Beep Symptoms - Lenovo ThinkPad Edge E420 Hardware Maintenance Manual

Numeric error codes

Table 2. Numeric error codes
Symptom or error (beeps, if any)
0187
EAIA data access error-The access to EEPROM is failed.
(two short beeps)
0189
Invalid RFID configuration information area—The
EEPROM checksum is not correct.
(two short beeps)
0190
Critical low-battery error
(two short beeps)
0191
System Security—Invalid Remote Change requested.
0251
System CMOS checksum bad— Default configuration
used.
(two short beeps)
0271
Date and time error—Neither the date nor the time is set
in the computer.
(two short beeps)
1802
Unauthorized network card is plugged in—Turn off and
remove the miniPCI network card.
(two short beeps)

Error messages

Table 3. Error messages
Symptom or error (beeps, if any)
Fan error.
(four short beeps, one long beep)

No-beep symptoms

Table 4. 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.
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Hardware Maintenance Manual
FRU or action, in sequence
System board.
System board.
1. Charge the battery pack.
2. Battery pack.
1. Run ThinkPad Setup, and then save current
setting by pressing F10.
2. System board.
1. Charge the backup battery for more than 8 hours
by connecting the ac power adapter.
2. Replace the backup battery and run ThinkPad Setup
to reset the time and date.
Run ThinkPad Setup to reset the time and date.
1. Remove the Mini PCI network card.
2. System board.
FRU or action, in sequence
1. Fan.
2. Thermal grease.
3. System board.
FRU or action, in sequence
1. Make sure that every connector is connected
tightly and correctly.
2. DIMM.
3. System board.
1. Reseat DIMM.
2. 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.