Troubleshooting - ACME SAM-50 User Manual

7. Troubleshooting

Disconnect from the mains before starting any maintenance work
Verify the power supply settings before applying power !
Following are a few common problems that may occur during operation. Here are
some suggestions for easy troubleshooting:
A. If the unit does not work, no light output, or fan is not working
1. Check main power connection and fuse.
2. Measure mains voltage on main power connector.
3. Check power on LED.
B. Not responding to DMX controller
1. DMX LED should be on. Check DMX connectors and cables to see if link properly.
2. If DMX LED is on but no response to DMX signal, check the DMX address setting
and DMX polarity.
3. If you have intermittent DMX signal problems, check the pin on connectors or on
PCB of the unit or the previous one.
4. Try to use another DMX controller.
5. Check DMX cables run near or run alongside to high voltage cables. It may cause
damage or interference to DMX interface circuit.
E. One of the channels is not working well
1. The stepper motor might be damaged or the cable connected to the PCB is broken.
2. The motor's drive IC on the PCB might be out of condition.
DANGER !!
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D. If pan belt is broken
1. Turn off main power.
2. Unscrew all screws (A) and open the base-housing cover.
3. Unplug all connect wires.
4. Unscrew the screws (C) and remove the
fixture head.
5. Change a new belt (B), put the belt around
the axis gear and motor gear.
6. Screw the screws (C), and adjust the belt
tension properly.
Note: do not fix belt too tight as it is easy to
rupture.
7. Plug all the connect wires back.
8. Screw all screws (A) and close the base-housing cover.
※ Pay attention to the belt tension when install the belt.
CAUTION！
Install the belt, Unscrew the screws (C) and remove the fixture head.
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