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FRU Removals and Replacements
This section contains information about removals and
replacements.
Do not damage any parts. Only certified, trained
personnel should service the computer.
The arrows in this section show the direction of
movement to remove a FRU, or to turn a screw to
release the FRU. The arrows are marked in numeric
order, in square callouts, to show the correct
sequence of removal.
When other FRUs that must be removed before the
failing FRU is removed, they 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 503 for internal cable
connections and arrangement information.
When replacing a FRU, use the correct screw size, as
shown in the procedure.
Safety Notice 1: Translation on page 8
Before the computer is powered-on after FRU
replacement, 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 rattling sounds. Metallic parts or
metal flakes can cause electrical short circuits.
Safety Notice 3: Translation on page 10
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 14
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.
Safety Notice 4: Translation on page 11
The lithium battery can cause a fire, explosion, or
severe burn. Do not recharge it, remove its polarized
connector, disassemble it, heat it above 100°C
(212°F), incinerate it, or expose its cell contents to
water. Dispose of the battery as required by local
ordinances or regulations. Use only the battery in the
appropriate parts listing. Use of an incorrect battery
can result in ignition or explosion of the battery.
454 IBM Mobile Systems HMM