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FRU Removals and Replacements
This section contains information about removals and
replacements.
Do not damage any parts. Only certified and trained
personnel should service the computer.
The arrows in this section show the direction of move-
ment to remove a FRU, or to turn a screw to release
the FRU. The arrows are marked in numeric order, in
square callout, to show the correct sequence of
removal.
Any FRUs that must be removed before removing the
failing FRU are listed at the top of the page.
To replace a FRU, reverse the removal procedure
and follow any notes that pertain to replacement. See
“Locations” on page 72 for internal cable connections
and arrangement information.
When replacing a FRU, use the correct screw size, as
shown in the procedure.
Safety Notice 1
Before the computer is powered on after FRU replace-
ment, make sure all screws, springs, or other small parts,
are in place and are not left loose inside the computer.
Verify this by shaking the computer and listening for rat-
tling sounds. Metallic parts or metal flakes can cause elec-
trical short-circuits.
Safety Notice 3
The battery pack contains small amounts nickel. Do not
disassemble it, throw it into fire or water, or short-circuit it.
Dispose the battery pack as required by local ordinances
or regulations.
Safety Notice 8
Before removing any FRU, power-off the computer, unplug
all power cords from electrical outlets, remove the battery
pack, and then disconnect any interconnecting cables.
Attention: The planar board is sensitive and can be
damaged by electronic discharge. Establish personal
grounding by touching a ground point with one hand before
touching these units. An electrostatic discharge (ESD)
strap must be used to establish personal grounding.
An electrostatic discharge (ESD) strap (P/N: 6405959)
must be used to establish personal grounding.
34 ThinkPad i Series 1400