- Mack User's Guide USB U2781A

42 U2781A User’s Guide
4 General Maintenance
To remove the dirt or moisture in the chassis panel, the cleaning steps
are as follows:
1 Turn off the unit and remove the power cord and I/O cable.
2 Shake out any dirt that may have accumulated inside the chassis
unit.
3 Wipe the chassis with a dry cloth.
NOTE
Repair or service which are not covered in this manual should only be
performed by qualified personnel.