IBM ThinkPad 560Z, Hardware Maintenance Manual, Page: 5 / 88

Read This First
Before you go to the checkout guide, be sure to read this
section.
Important Notes
Only certified trained personnel should
service the computer.
Read the FRU Removal and Replacement
procedures before replacing any FRUs.
Be extremely careful during write operations
such as copying, saving, or formatting.
Drives in the computer that you are servicing
might have been rearranged, or the drive startup
sequence might have been altered. If you select
an incorrect drive, data or programs might be
overwritten.
Replace FRUs only for the correct model.
When you replace a FRU, make sure the model
of the machine and FRU part number are correct
by referring to the FRU parts list.
A FRU should not be replaced because of a
single, unreproducible failure. Single failures
can occur from a variety of reasons that have
nothing to do with a hardware defect, such as:
cosmic radiation, electrostatic discharge, or
software errors. FRU replacement should be
considered only when a recurring problem exists.
If this is suspected, clear the error log and run
the test again. Do not replace any FRUs if log
errors do not reappear.
Be careful not to replace a nondefective FRU.
ThinkPad 560Z HMM
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