6 Removal And Replacement Procedures For Authorized Service Provider Parts; Component Replacement Procedures; Preparation For Disassembly; Battery - HP Probook 450 G9 Maintenance And Service Manual

6 Removal and replacement procedures for
authorized service provider parts
This chapter provides removal and replacement procedures for authorized service provider parts.
IMPORTANT:
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 http://partsurfer.hp.com, select your country or region, and then
follow the on-screen instructions.
You must remove, replace, or loosen as many as 53 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.
See Removal and replacement procedures preliminary requirements on page 31
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.

Battery

To remove the battery, use this procedure and illustration.
Table 6-1 Battery description and part number
Description
Battery, 3 cell, 42 Whr
Battery, 3 cell, 51 Whr
WARNING!
Do not puncture, twist, or crack the battery.
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50 Chapter 6 Removal and replacement procedures for authorized service provider parts
Components described in this chapter should be accessed only by an authorized service
To avoid personal injury and damage to the product:
for initial safety procedures.
Spare part number
M75599-005
M73472-005