Chapter 5

Troubleshooting
This chapter helps you identify and resolve various issues in the field. If issues persist,
contact SMART technical support. For SMART contact information, see Technical
Support on page 49.
Topics in this chapter include the following:
•Troubleshooting Quick Reference Table on page30
•Troubleshooting Power Issues on page31
•Troubleshooting Picture Issues on page32
•Troubleshooting Audio Issues on page35
•Troubleshooting with the Wireless Remote Control Sensor LED on page35
•Troubleshooting Interactivity Issues on page 37
•Troubleshooting Wireless Remote Control Issues on page 36
For additional troubleshooting suggestions, see the NEC MultiSync S521 User’s
Manual (document 145185).