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FRU Removals and Replacements
This section contains information about removals and replacements.
ŸDo not damage any parts. Only certified and
personnel should service the computer.
ŸThe arrows in this section show the direction
ment | to remove | a FRU, | or | to turn a screw to |
the | FRU. The | arrows | are | marked in numeric or |
square callout, to show the correct sequence removal.
ŸWhen other FRUs must be removed before the FRU is removed, they are listed at the top page.
Ÿ To | replace | a | FRU, | reverse the | removal proced |
and | follow | any | notes | that pertain | to replaceme |
ŸWhen replacing a FRU, use the correct screw shown in the procedures.
Safety Notice 1: Translation on page 5
Before the computer is powered on after FRU ment, make sure all screws, springs, or other sma parts, are in place and are not left loose ins computer. Verify this by shaking the computer tening for rattling sounds. Metallic parts or meta can cause electrical short circuit.
| Safety | Notice 3: | Translation on | page | 7 |
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The lithium battery can cause a fire, | explosio | |||||||||
severe burn. Do not recharge it, remove | its po | |||||||||
connector, | disassemble | it, heat it above |
| 100°C ( | ||||||
°F), incinerate it, or expose its cell | contents | |||||||||
Dispose | of | the | battery | as | required by | local | ||||
or regulations. | Use | only | the battery in the a | |||||||
parts listing. Use of an incorrect battery can | ||||||||||
ignition | or | explosion | of | the | battery. |
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Safety Notice 8: Translation on page 11
Before removing any FRU,
An electrostatic discharge (ESD) strap (P/N 6405959) must be used to establish personal grounding.
58 ThinkPad 390X / i 1700 HMM