Thinkpad T500 and W500 Hardware Maintenance Manual - Lenovo

Table 2. Numeric error codes (continued)
Symptom or error FRU or action, in sequence
0250
1. Charge the backup battery for more
System battery error—System battery is than 8 hours by connecting the ac
dead.
adapter.
2. Replace the backup battery and run BIOS
Setup Utility to reset the time and date.
0251
1. Charge the backup battery for more
System CMOS checksum bad— Default than 8 hours by connecting the ac
configuration used.
adapter.
2. Replace the backup battery and run BIOS
Setup Utility to reset the time and date.
0252
Reset the password by running BIOS Setup
Password checksum bad—The password is Utility.
cleared.
0260
1. Charge the backup battery for more
System timer error.
than 8 hours by connecting the ac
adapter.
2. Replace the backup battery and run BIOS
Setup Utility to reset the time and date.
3. System board.
0270
1. Charge the backup battery for more
Real-time clock error.
than 8 hours by connecting the ac
adapter.
2. Replace the backup battery and run BIOS
Setup Utility to reset the time and date.
3. System board.
0271
Run BIOS Setup Utility to reset the time
Date and time error—Neither the date nor and date.
the time is set in the computer.
0280
1. Load “Setup Default” in BIOS Setup
Previous boot incomplete— Default
Utility.
configuration used.
2. DIMM.
3. System board.
02F0
1. CPU.
CPU ID:xx Failed.
2. System board.
02F4
1. Load Setup Defaults in BIOS Setup
EISA CMOS not writable.
Utility.
2. Replace the backup battery.
3. System board.
02F5
1. DIMM.
DMA test failed.
2. System board.
02F6
1. DIMM.
Software NMI failed
2. System board.
02F7
1. DIMM.
Fail-safe timer NMI failed
2. System board.
1802
1. Remove Mini PCI network card.
Unauthorized network card is plugged 2. System board.
in—Turn off and remove the miniPCI
network card.
1803
Unauthorized daughter card is plugged
in—Turn off and remove the daughter card.
64 ThinkPad T500 and W500 Hardware Maintenance Manual
1. Remove the daughter card that you
installed.
2. System board.