Symptom-To-Fru Index; Numeric Error Codes - Lenovo 3000 N100 MT 0689 Hardware Maintenance Manual

Symptom-to-FRU index

Symptom-to-FRU index

The symptom-to-FRU index in this section lists symptoms and errors and their
possible causes. The most likely cause is listed first, in boldface type.
Note: Do the FRU replacement or other actions in the sequence shown in the
This index can also help you determine, during regular servicing, what FRUs are
likely to need to be replaced next.
A numeric error is displayed for each error detected in POST or system operation.
In the displays, n can be any number.
If no numeric code is displayed, check the narrative descriptions of symptoms. If
the symptom is not described there, go to "Intermittent problems" on page 41.

Numeric error codes

36
MT 0689, 0768, and 0769
column headed "FRU or action, in sequence." If replacing a FRU does not
solve the problem, put the original part back in the computer. Do not
replace a nondefective FRU.
Note
For a device not supported by diagnostic codes in the Lenovo 3000 notebook
computers, see the manual for that device.
Symptom or error
0200
Failure Fixed Disk
021x
Keyboard error
0220
Monitor type does not match CMOS—Run
SETUP
0230
Shadow RAM Failed at offset:nnnn
0231
System RAM Failed at offset:nnnn
0232
Extended RAM Failed at offset:nnnn
0250
System battery is dead—Replace and run
SETUP
0251
System CMOS checksum bad—Default
configuration use
FRU or action, in sequence
1. Reseat the hard disk drive.
2. Load Setup Defaults in BIOS Setup
Utility.
3. Hard disk drive.
4. System board.
1. Keyboard.
2. System board.
Load Setup Defaults in BIOS Setup Utility.
System board.
1. DIMM.
2. System board.
1. DIMM.
2. System board.
1. Charge the backup battery for more
than 8 hours by connecting the ac
adapter.
2. Replace the backup battery and run BIOS
Setup Utility to reset the time and date.
1. Charge the backup battery for more
than 8 hours by connecting the ac
adapter.
2. Replace the backup battery and run BIOS
Setup Utility to reset the time and date.