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FRU replacement notices
This section contains notices related to removing and
replacing parts. Read this section carefully before replacing
any FRU.
Screw notices
Loose screws can cause a reliability problem. In IBM
ThinkPad computer, this problem is addressed with special
nylon-coated screws that have the following characteristics:
v
They maintain tight connections.
v
They do not easily come loose, even with shock or
vibration.
v
They are harder to tighten.
v
They should be used only once.
Do the following when you service this machine:
v
Keep the screw kit (for the P/N, see “Miscellaneous
parts” on page 131) in your tool bag.
v
Always use new screws.
v
Use a torque screwdriver if you have one.
Tighten screws as follows:
v
Plastic to plastic
Turn an additional 90 degrees after the screw head
touches the surface of the plastic part:
90 degrees more
(Cross-section)
v
Logic card to plastic
Turn an additional 180 degrees after the screw head
touches the surface of the logic card:
180 degrees more
(Cross-section)
v
Torque driver
If you have a torque driver, refer to the “Torque” column
for each step.
FRU replacement notices
ThinkPad A21e, A22e, i 1800
53
Содержание A21e - ThinkPad 2628 - Celeron 600 MHz
Страница 24: ...Laser compliance statement 20 ThinkPad A21e A22e i 1800 MT 2655 2663 2664 ...
Страница 72: ...6 5 4 4 6 5 7 6 Removing and replacing a FRU 68 ThinkPad A21e A22e i 1800 MT 2655 2663 2664 ...
Страница 113: ...4 3 Removing and replacing a FRU ThinkPad A21e A22e i 1800 109 ...
Страница 142: ... Part Number 24P2910 Printed in U S A 1P P N 24P2910 ...