Component Replacement Procedures; Serial Number - HP 520 Maintenance And Service Manual

Component replacement procedures

This chapter provides removal and replacement procedures.
There are as many as 59 screws, in 7 different sizes, 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.

Serial number

Report the computer serial number to HP when requesting information or ordering spare parts. The serial
number is located on the bottom of the computer.
30 Chapter 4 Removal and replacement procedures