Lenovo IdeaPad S410p Touch Hardware Maintenance Manual - IdeaPad S410p, S410p - Page 23

General checkout, Important notes

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General checkout General checkout This chapter presents the following information: • "What to do first" on page 20 • "Power system checkout" on page 21 Before you go to the checkout, make sure to read the following important notes: Important notes: • Only certified trained personnel can service the computer. • Before replacing any FRU, read the entire page on removing and replacing FRUs. • Carefully remove screws for reuse when replacing FRUs. • Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computer that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten. • Replace an FRU only with another FRU of the correct model. When you replace an FRU, make sure that the machine model and the FRU part number are correct by referring to the FRU parts list. • An FRU should not be replaced just because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Consider replacing an FRU only when a problem recurs. If you suspect that an FRU is defective, clear the error logs and run the test again. If the error does not recur, do not replace the FRU. • Be careful not to replace a nondefective FRU. 19

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19
General checkout
General checkout
This chapter presents the following information:
•
“What to do first” on page 20
•
“Power system checkout” on page 21
Before you go to the checkout, make sure to read the following important notes:
Important notes:
•
Only certified trained personnel can service the computer.
•
Before replacing any FRU, read the entire page on removing and replacing
FRUs.
•
Carefully remove screws for reuse when replacing FRUs.
•
Be extremely careful during such write operations as copying, saving, or
formatting.
Drives in the computer that you are servicing sequence might
have been altered. If you select an incorrect drive, data or programs might be
overwritten.
•
Replace an FRU only with another FRU of the correct model.
When you
replace an FRU, make sure that the machine model and the FRU part number are
correct by referring to the FRU parts list.
•
An FRU should not be replaced just because of a single, unreproducible failure.
Single failures can occur for a variety of reasons that have nothing to do with a
hardware defect, such as cosmic radiation, electrostatic discharge, or software
errors. Consider replacing an FRU only when a problem recurs. If you suspect that
an FRU is defective, clear the error logs and run the test again. If the error does
not recur, do not replace the FRU.
•
Be careful not to replace a nondefective FRU.