5
Removal and replacement procedures for
authorized service provider parts
This chapter provides removal and replacement procedures for authorized service provider parts.
IMPORTANT:
Components described in this chapter should be accessed only by an authorized service
provider. Accessing these parts can damage the computer or void the warranty.
NOTE:
Details about your computer, including model, serial number, product key, and length of warranty,
are on the service tag at the bottom of your computer.
Component replacement procedures
To remove and replace computer components, use these procedures.
NOTE:
HP continually improves and changes product parts. For complete and current information about
supported parts for your computer, go to
, select your country or region, and then
follow the on-screen instructions.
You must remove, replace, or loosen as many as 55 screws when you service the parts described in this
chapter. Make special note of each screw size and location during removal and replacement.
Preparation for disassembly
To remove and replace computer components, use these procedures.
Removal and replacement procedures preliminary requirements on page 25
for initial safety procedures.
1.
Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2.
Disconnect the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
Bottom cover
To remove the bottom cover, use this procedure and illustration.
Table 5-1
Bottom cover description and part number
Description
Spare part number
Bottom cover for use in models with discrete graphics memory
M21721-001
Bottom cover for use in models with UMA graphics memory
M21720-001
Before removing the bottom cover, prepare the computer for disassembly (
Remove the bottom cover:
30
Chapter 5 Removal and replacement procedures for authorized service provider parts
Summary of Contents for ProBook 450 G8
Page 4: ...iv Safety warning notice ...
Page 8: ...viii ...
