1 Getting Started26 Keysight U2722A/U2723A User’s GuideGeneral maintenance1 Power off your module and remove the power cord and I/O cable from yourdevice.2 Remove your module from the bumper casing.3 Shake out any dirt that may have accumulated on the module.4 Wipe your module with a dry cloth and install the bumper back in place.NOTE Any repair that is not covered in your modular product manuals should only beperformed by qualified personnel.