Lenovo ThinkPad S31 ThinkPad S30, S31 Hardware Maintenance Manual (October 200 - Page 33

LCD FRU Replacement Notice, Replacing the System Board, Important Notice

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LCD FRU Replacement Notice The TFT LCD (XGA 10.4-inch) for the computer contains many thin-film transistors (TFTs). A small number of missing, discolored, or lighted dots (on all the time) is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is: 5 or more bright dots, 5 or more dark dots, or a total of 9 or more bright and dark dots. Replacing the System Board When you replace the system board, restore the computer Serialization Information Data and reassign the UUID using the ThinkPad CE Utility Diskette. Note: Do not power off the computer while restoring the Serialization Information Data and the UUID. Important Notice This computer uses special nylon-coated screws with the following characteristics: v They maintain tight connections. v They do not easily come loose, even with shock or vibration. v They need additional force to tighten. v They should be used only once. Do the following when you service this computer: v Have a screw kit (10L1956) available. v Always use new screws if you are instructed. v Use a torque screwdriver (U.S. only) if you have one. ThinkPad s30, s31 29

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LCD FRU Replacement Notice
The TFT LCD (XGA 10.4
–
inch) for the computer contains
many thin-film transistors (TFTs). A small number of
missing, discolored, or lighted dots (on all the time) is
characteristic of TFT LCD technology, but excessive pixel
problems can cause viewing concerns. The LCD should be
replaced if the number of missing, discolored, or lighted
dots in any background is: 5 or more bright dots, 5 or more
dark dots, or a total of 9 or more bright and dark dots.
Replacing the System Board
When you replace the system board, restore the computer
Serialization Information Data and reassign the UUID using
the ThinkPad CE Utility Diskette.
Note:
Do not power off the computer while restoring the
Serialization Information Data and the UUID.
Important Notice
This computer uses special nylon-coated screws
with the following characteristics:
v
They maintain tight connections.
v
They do not easily come loose, even with shock
or vibration.
v
They need additional force to tighten.
v
They should be used only once.
Do the following when you service this computer:
v
Have a screw kit (10L1956) available.
v
Always use new screws if you are instructed.
v
Use a torque screwdriver (U.S. only) if you have
one.
ThinkPad s30, s31
29