5 Removal And Replacement Procedures For Customer Self-Repair Parts; Component Replacement Procedures; Preparation For Disassembly; Bottom Cover - HP Probook 450 G9 Maintenance And Service Manual

5 Removal and replacement procedures for
Customer Self-Repair parts
This chapter provides removal and replacement procedures for Customer Self-Repair parts.
NOTE: The Customer Self-Repair program is not available in all locations. Installing a part that is not
supported by the Customer Self-Repair program can void your warranty. Check your warranty to determine
whether Customer Self-Repair is supported in your location.

Component replacement procedures

To remove and replace computer components, use these procedures.
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.
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.
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.

Bottom cover

To remove the bottom cover, use this procedure and illustration.
Table 5-1 Bottom cover description and part number
Description
Bottom cover for use in models with UMA or discrete graphics and a 51 Whr battery
Bottom cover for use in models with UMA graphics and a 42 Whr battery
Before removing the bottom cover, prepare the computer for disassembly (see
page 40).
40 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
for initial safety procedures.
Spare part number
N01917-001
M21720-001
Preparation for disassembly on