Component Replacement Procedures; Serial Number - HP Compaq Presario,Presario CQ42-121 Maintenance And Service Manual

Component replacement procedures

This chapter provides removal and replacement procedures.
There are as many as 75 screws, in 12 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.

Serial number

The serial number label, located in the battery bay of the computer, provides important information
that you may need when contacting technical support.
(1) Product name
(2) Serial number
(3) Product number
50 Chapter 4 Removal and replacement procedures
(4) Warranty period
(5) Model description (select models)
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