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Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 77 screws that must be removed, replaced, and/or loosened when servicing
the computer. Make special note of each screw size and location during removal and replacement.
Service tag
When ordering parts or requesting information, provide the computer serial number and model number
provided on the service tag. It is necessary to remove the battery to obtain these numbers. See
Battery
on page 51 for battery removal instructions.
Item Component Description
(1) Product name This is the product name affixed to the front of
the computer.
(2) Serial number (s/n) This is an alphanumeric identifier that is unique to
each product.
(3) Part number/Product number (p/n) This number provides specific information about
the product’s hardware components. The part number
helps a service technician determine what components
and parts are needed.
(4) Warranty period This number describes the duration of the warranty
period for the computer.
(5) Model description This is the alphanumeric identifier used to locate
documents, drivers, and support for the computer.
50 Chapter 4 Removal and replacement procedures