Symptom/Error FRU/Actionin Sequence
IEEE1394 does not work
correctly 1. IEEE1394 cable
2. Card-to-systemboard cable
3. IEEE1394/LAN card ASM
4. Systemboard
Modemdoes not work
correctly 1. Modemcable
2. Modemcard ASM
3. Systemboard
Ethernetdoes not work
correctly 1. Card-to-systemboard cable
2. LAN/1394combo card ASM
3. Basecover ASM
4. Systemboard
WirelessLAN does not
workcorrectly (s30 only) 1. Wirelesscard ASM
2. Systemboard
Printproblems 1. Runprinter self-test.
2. Printerdriver
3. Printercable
4. Systemboard
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
Youare 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