Da-Lite Tensioned Horizon Electrol - Manual (Page 7)

7
Troubleshooting
Symptom Cause Solution
Screen or mask will not operate.
Motor does not hum.
Motor hums.
Blown facility fuse. Replace facility fuse.
Tripped facility circuit breaker. Reset facility circuit breaker.
No power to control board in junction box.
Check above. Tighten all loose wire connections.
Correct any improper connections.
Loose control wire connections. Check all T4 and T6 wire connections – see wiring diagram.
Power at junction box
Thermal overload tripped.
Let motor cool down for 15 minutes. Try again.
Defective motor.
Replace motor assembly.
NOTE: Motor is a sealed assembly.
Temporary binding. With power off, turn roller by hand to free binding.
Image on screen does not
match picture area.
Screen not set to the correct format. Set screen to the format being projected.
Screen or mask out of adjustment.
See screen adjustment. We recommend you have your
dealer make these adjustments for you.
Noise.
NOTE: Screen will operate with
a low pitched hum.
Grinding. Foreign object in screen rubbing on roller
or fabric.
Remove.
Coasting. Defective brake. Replace motor assembly.
Fabric hangs crooked.
Screen not installed properly. Check for level and plumb.
Fabric has backed up inside case.
Lower screen and carefully pull fabric to remove
any slack on the roller.
Fabric is damaged. Replace fabric.