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Symptom-to-FRU index
This section contains following information:
v “Numeric error codes”
v “Error messages” on page 38
v “No-beep symptoms” on page 39
v “LCD-related symptoms” on page 40
v “Intermittent problems” on page 41
v “Undetermined problems” on page 41
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
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.
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
Table 1. Numeric error codes
Symptom or error FRU or action, in sequence
0200
Hard
disk error—The hard disk is not
working.
1. Reseat the hard disk drive.
2. Load Setup Defaults in BIOS Setup
Utility.
3. Hard disk drive.
4. System board.
021x
Keyboard error.
Run interactive tests of the keyboard and
the auxiliary input device.
0220
Monitor type error—Monitor type does not
match the one specified in CMOS.
Load Setup Defaults in BIOS Setup Utility.
0230
Shadow RAM error—Shadow RAM fails at
offset nnnn.
System board.
0231
System
RAM error—System RAM fails at
offset nnnn.
1. DIMM.
2. System board.
Note:
For
a device not supported by diagnostic codes in the Lenovo 3000 computers,
see the manual for that device.
36 Lenovo 3000 N500 Hardware Maintenance Manual