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andyww

X Will not move right

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Hi,

I have not printed anything yet but previously fully tested the mechanics with control panel.

But now, suddenly the printhead will not move when X+ is clicked.

I have done the following:

Disconnected limit switches.

Swapped over the X and Y stepper drivers, fault stays the same, on X

Swapped the motor cables, now X does move when Y+ is clicked, thus proving the motor and mechanics are OK

Any ideas?

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I have done the following:

Disconnected limit switches.

Swapped over the X and Y stepper drivers, fault stays the same, on X

Swapped the motor cables, now X does move when Y+ is clicked, thus proving the motor and mechanics are OK

Any ideas?

Sounds like a problem with the PCB :(

The only other thing I would double check is that there is a solid connection to the motor wires. Try removing and re-inserting all 4 motor wires, making sure the screw-clamp is fully loosened before re-inserting the bare wire into it. Also the plastic part where the wires screw into is removable, you might want to try swapping it with one next to it and testing again. Disconnect all limit switches in the mean-time just to be absolutely sure.

(edit - Oh I see you already swapped the wires, well you can try swapping the plastic and see if it doesn't work when Y is plugged into it, and if you have a multimeter try getting a voltage reading off the PCB connections while the motors are in motion, compare X terminals with Y terminals)

XNcUW.jpg

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The only other thing I would double check is that there is a solid connection to the motor wires. Try removing and re-inserting all 4 motor wires, making sure the screw-clamp is fully loosened before re-inserting the bare wire into it. Also the plastic part where the wires screw into is removable, you might want to try swapping it with one next to it and testing again. Disconnect all limit switches in the mean-time just to be absolutely sure.

You have older electronics, new electronics no longer use the screw-clamps but already fixed smaller connectors. So no way to screw that up.

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I have checked this some more and found that the RH limit switch signal on the PCB connector is stuck at 0 volts, even with the switch unplugged.

Then followed this through to the Arduino board and it is stuck there, so the problem seems to be a blown I/O port on the Arduino. I have lodged a support call.

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You have older electronics, new electronics no longer use the screw-clamps but already fixed smaller connectors. So no way to screw that up.

I'm... Obsolete! :O :cry:

Contact Harma, she can help bring your ultimaker up-to-date :)

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