System information

Removal and replacement procedures
Maintenance and Service Guide 4–5
Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 112 screws, in 11 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.
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 to determine what
components and parts are needed.
4 Model description This is the alphanumeric identifier used to locate documents, drivers, and support
for the computer.
5 Warranty period This number describes the duration of the warranty period for the computer.