I use the Repetier host 0.56 on my Mac.
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If I want to move extruder motor when temperature less than 170 degree, program say "cold extrusion prevented" and motor doesn't move.
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If I want to move extruder motor when temperature more than 170 degree, program says nothing and motor doesn't move.
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When I reconnect extruder motors on control board, motors are still stand (temperature on heaters is 220 degrees).
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When I reconnect this motors to one of axes ports, motors are come alive.
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I reconnected the heaters and them temperature sensor. This action only change in Repetier host Extruder 1 on Extruder 2 and Extruder 2 on Extruder 1, motors are still stand (temperature on heaters is 220 degrees).
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When I want to control the printer from LCD-panel, I go to Menu-Control-Temperature-Nozzle1 (or Nozzle2) and set the temperature on 220 degrees. Then I go to Menu-Prepare-Move axis-Move 1mm-Extruder and twist the knob, motors on extruders doesn't work (temperature on heaters is 220 degrees). If I go to Menu-Prepare-Move axis-Move 1mm-Move X (or Move Y, or Move Z), motors works (on X, Y, Z axes).
With multimeter I checked Red and Black contacts on the control board. When I try to move X, Y, Z axes motors and stop them, this contacts have 12 volts. When I try to do the same action for extruders motors, contacts have 0 volts.
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I reconnected the drivers of stepper motors - axes motors are works, extruder motors doesn't works.
I received this printer with installed firmware and I don't reinstall it.
