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v System board without IBM security chip (bottom view)

Begin by checking the FRU number of the system board,

and be sure to use the correct system board for the

computer. For the FRU numbers, see “Parts list” on

page 142.

Important

If the ThinkPad computer you are servicing has a

security chip, bear the following in mind:

v Do not remove the security chip from the

system board. If the security chip is removed by

accident, reinstall it on the system board

immediately. Make sure that it is firmly fixed on

the system board and does not move easily.

v The security chip cannot be used with any other

system board.

v The system board cannot be used with any other

security chip.

v The system board cannot be used without the

security chip.

v If you return a defective system board, you must

check whether the security chip is embedded. If it

is not, the board may not be covered under

warranty.

Removing and replacing a FRU

ThinkPad T40, T40p, T41 Series 109

Other manuals for IBM ThinkPad T40 series

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