Keysight Technologies 3458A Guide D'utilisation page 430

C Procedure to Lock Out Front/Rear Terminals and Guard Terminal Switches
Figure C-9
Covers installation procedure
Do the following:
1 Turn the 3458A over so its top sits on your workbench.
2 Install the bottom cover by placing it into the slots of the instrument side
3 Turn the 3458A over so the bottom sits on your workbench.
4 Install the top cover by placing it into the slots of the instrument side castings.
5 Refer to
6 Reinstall the rear bezel. Use the #TX15 Torx driver to reinstall the rear bezel
430
Switch covers installation
castings, Then push the cover toward the front of the instrument into the front
panel bezel.
Then push the cover toward the front of the instrument into the front panel
bezel.
Figure C-4. Turn the instrument so its back faces you.
screws.
Keysight 3458A User's Guide