Don't neglect your amp after it has been installed in a rack case. Occassionaly check the screws
holding the amp into the rack, making sure they are tight. Continuous transportation and vibration can
cause screws to become loose, both on the unit and with your rack case rails. At least once a month,
remove the SM-900 from the case and tighten all outside screws, especially on the front panel, and
wipe off the outside of the chassis with a damp cloth. Then check all the connections in your rack case
and reinstall your unit.
16 • SM-900 USER GUIDE