Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 51 screws that must be removed, replaced, or loosened when servicing
the computer. Make special note of each screw and screw lock 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.
Item Description Function
(1) Serial number (s/n) This is an alphanumeric identifier that is unique to
each product.
(2) 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.
(3) Model description This is the alphanumeric identifier needed to locate
documents, drivers, and support for the computer.
(4) Warranty period This number describes the duration of the warranty
period for the computer.
46 Chapter 4 Removal and replacement procedures
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