HP Tc4200 - Compaq Tablet PC Maintenance And Service Manual page 120

Removal and Replacement Procedures
6. Use a flat-blade screwdriver to turn the processor locking
screw one-quarter turn counterclockwise 1 until you hear a
click.
7. Lift the processor straight up and remove it 2.
✎
The gold triangle 3 on the processor should be aligned in the
rear right corner when you install the processor.
Removing the Processor
Reverse the above procedure to install the processor.
6–30 Maintenance and Service Guide