Do you have a question about the HP 280 G2 MT Business and is the answer not in the manual?
Release screw on the access panel, grip the tab, pull towards the rear and remove.
Release 3 bezellatches from chassis by pulling the bezellatches outwards.
Disconnect and remove all cables from the unit.
Remove the HDD from the unit using indicated release points.
Remove the ODD from the unit using indicated release points.
Take off the PSU from the unit by releasing retaining screws.
Take off the system fan from the unit by releasing retaining screws.
Take off the Card Reader from the unit by releasing retaining screws.
Take off the FIO from the unit by releasing retaining screws.
Release memory socket levers by pulling outward.
Rotate the screw driver to release CPU cooler from the unit.
Rotate screw driver to loose PCA from the unit.
Take off the battery from the unit.
Open the PSU cover and take off the PSU fan.
Rotate the screw driver to release the PCA from PSU.
Use an electric iron to remove the CAP.