Toshiba mini NB250 series, Руководство по обслуживанию

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4 Replacement Procedures 4.1 General
NB250/NB255 Maintenance Manual 4-4
Before You Begin
Before you begin to disassemble the laptop, keep in mind the precautions and advice in this
section. Always begin disassembly by removing the AC adapter and battery pack. Remove the
optional parts and accessories as well. The procedures for removing the batteries will be
explained later.
Disassemble the laptop only when an abnormality has occurred.
Use only the recommended tools.
To run and store the laptop, be sure to prepare a working environment that is free from:

Dust and contaminants

Static electricity

Extremely high or low temperatures and extremely high humidity
Run the diagnostic tests explained in Chapter 2 of this manual to identify the FRU that has
probably caused the system failure.
Perform only the required machine operations. Use only the disassembly and reinstallation
procedures described in this manual.
Place the removed components in a safe place away from the laptop so that they are not damaged
or get in the way of you doing your work.
Normally, a number of screws need to be removed or replaced during disassembling. Place the
removed screws in a safe place so that you can easily find the right screws for the right
components.
When assembling the laptop, use the specified screws to fasten the parts to the specified
locations. See the appropriate explanations and figures for screw sizes.
To avoid personal injury, use care to handle components that have sharp edges or corners.
After you have replaced a FRU, check that the FRU works correctly to ensure normal laptop
operation.