Lenovo ThinkPad SL500 Hardware Maintenance Manual - Page 47
Symptom-to-FRU, index, Numeric, error, codes - fan replacement
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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. Note: For a device not supported by diagnostic codes in the ThinkPad computers, see the manual for that device. Numeric error codes Table 1. Numeric error codes Symptom or error FRU or action, in sequence 1802 Unauthorized network card is plugged in Power off and remove the miniPCI network card. Remove the MiniPCI network card. 1804 Unauthorized WAN card is plugged in Power off and remove the WAN card. Remove the wireless WAN card. 1805 Unauthorized Wireless USB card is plugged in - Power off and remove the Wireless USB card. Remove the wireless USB card. 1810 Fan. Fan Error 1811 Thermal sensing error CPU. Related service information 39