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Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 110 screws, in 13 different sizes, that must be removed, replaced, 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
description provided on the service tag.
(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 to determine what components and
parts are needed.
(4) Model description: This is the alphanumeric identifier needed to locate documents, drivers, and
support for the computer.
(5) Warranty period: This number describes the duration of the warranty period for the computer.
Component replacement procedures 41