Lenovo ThinkPad S31 ThinkPad S30, S31 Hardware Maintenance Manual (October 200 - Page 29
Intermittent Problems, Undetermined Problems
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Symptom/Error FRU/Action in Sequence IEEE 1394 does not work 1. IEEE 1394 cable correctly 2. Card-to-system board cable 3. IEEE 1394/LAN card ASM 4. System board Modem does not work correctly 1. Modem cable 2. Modem card ASM 3. System board Ethernet does not work correctly 1. Card-to-system board cable 2. LAN/1394 combo card ASM 3. Base cover ASM 4. System board Wireless LAN does not 1. Wireless card ASM work correctly (s30 only) 2. System board Print problems 1. Run printer self-test. 2. Printer driver 3. Printer cable 4. System board Note: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems". Intermittent Problems Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electronic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing an intermittent problem, do the following: 1. Run the diagnostic test for the system board in loop mode at least 10 times. 2. If no error is detected, do not replace any FRUs. 3. If any error is detected, replace the FRU shown by the FRU code. Rerun the test to verify that no more errors exist. Undetermined Problems You are here because the diagnostic tests did not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Follow these procedures to isolate the failing FRU (do not isolate non-defective FRUs). ThinkPad s30, s31 25