IBM ThinkPad 390E, Руководство по техническому обслуживанию аппаратной части

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FRU Removals and Replacements
This section contains information about removals and
replacements.
Ÿ
Do not damage any parts. Only certified and trained
personnel should service the computer.
Ÿ
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.
Ÿ
When other FRUs must be removed before the failing
FRU is removed, they are listed at the top of the
page.
Ÿ
To replace a FRU, reverse the removal procedure
and follow any notes that pertain to replacement.
Ÿ
When replacing a FRU, use the correct screw size, as
shown in the procedures.
Safety Notice 1: Translation on page 4
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 lis-
tening for rattling sounds. Metallic parts or metal
flakes can cause electrical short circuits.
Safety Notice 3: Translation on page 6
The battery pack contains small amounts of nickel.
Do not disassemble it, throw it into fire or water, or
short-circuit it. Dispose of the battery pack as
required by local ordinances or regulations.
Safety Notice 8: Translation on page 10
Before removing any FRU, power-off the computer,
unplug all power cords from electrical outlets, remove
the battery pack, and then disconnect any intercon-
necting cables.
An electrostatic discharge (ESD) strap (P/N 6405959) must
be used to establish personal grounding.
FRU Service Procedures
Review the following procedures before replacing any
FRU.
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ThinkPad 390E