All troubleshooting procedures should begin with an LED and cable connection check. DMX cables are often the cause of scroller problems.
| Scrollers have no power. All RED LED's out. |
24V DC power supply is not plugged in. |
Check if PSU main power LED is on. Plug PSU into non-dimmed circuit. |
| Single scroller power indicator is off (RED LED) |
4-pin XLR cable has a broken connection |
Replace 4-pin XLR cable with a known working piece of cable. Swap between units to verify condition of suspected cable |
| One or more scrollers are resetting when moving at high speed |
Voltage has dropped below acceptable level |
Check that the return cable has been installed. Check that maximum cable length has not been exceeded or too many scrollers on circuit. |
| DMX indicators (GREEN LED) on all scrollers are off |
No DMX is present at the PSU |
Check that the DMX cable is properly connected to DMX input on the PSU. Check that the DMX indicator light, located on the PSU, is on. |
| DMX indicators (GREEN LED) on one group of scrollers are off |
One output of PSU has failed. Faulty XLR 4-pin cable at PSU output |
Test the condition of cables with known working cables. Replace as necessary. |
| Rattling sound when gel string advances |
Loose thumbscrews on top of fixture |
Tighten thumbscrews with fingers until snug |
| DMX indicator (GREEN LED) flashes slowly |
Motor or gel string is jammed |
Inspect scroller for roller obstruction or disconnected gel roller. Replace onto roller bearing. Remove debris. |
| DMX indicator (GREEN LED) flashes quickly |
Broken gel sting. Inspect gel string rollers |
Tape string back onto roller or frames back together with gel tape. |
| Gel string is noisy, wrinkled or has a hole in center of frame |
Lamp was powered before scroller fan. LOW fan speed has been set. |
Always power scroller before lamp. Add Apollo Gel Shield to scroller. Set fan speed at HIGH. Replace gel frame or string. |
| Gel string and rollers stop when reset |
String tension has become too loose between rollers |
Power down the scrollers at mains or XLR connector, and then re-apply power. |