Picotest M3500A Service Manual page 45

Remove the six screws as shown in Figure 4-10.

Warning! Two grounding cords that connect between the rear panel
and the left and right chassis are fastened by the screws pointed by blue
arrows in Figure 4-10. Make sure the connections are correct when you
re-install the rear panel.
Figure 4-9
Grounding cord
fastening screw
Figure 4-10
45
Grounding cord
fastening screw