Symptom-To-Fru Index; Numeric Error Codes - Lenovo ThinkPad SL400c Hardware Maintenance Manual

Symptom-to-FRU index

This section contains following information:
v "Numeric error codes"
v "Error messages" on page 44
v "Beep symptoms" on page 45
v "No-beep symptoms" on page 45
v "LCD-related symptoms" on page 46
v "Intermittent problems" on page 47
v "Undetermined problems" on page 47
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 47.

Numeric error codes

Note:
For a device not supported by diagnostic codes in the ThinkPad computers, see
the manual for that device.
Table 1. Numeric error codes
Symptom or error
1802
Unauthorized network card is plugged in -
Power off and remove the miniPCI network
card.
1804
Unauthorized WAN card is plugged in -
Power off and remove the WAN card.
1805
Unauthorized Wireless USB card is plugged
in - Power off and remove the Wireless USB
card.
1810
Fan Error
1811
Thermal sensing error
FRU or action, in sequence
Remove the MiniPCI network card.
Remove the wireless WAN card.
Remove the wireless USB card.
Fan.
CPU.
Related service information
39