步骤 1 diagnostic



• If the Z-axis is no longer working.
• disconnect the power cable to the printer and open the bottom and on the mother board switch the cable to Z-step motor with the one to the extruder step-motor.
• close the bottom and start the printer in setting mode.
• request the extruder to move forward a little, and if the Z-motor move, you can confirm the Z-motor is working as expected.
• You can order a new driver online.
• I choose a DM556, because it is cheaper than the DM542.
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步骤 2 Mechanical mounting of the driver

• Disconnect the power cable again and open the bottom of the printer
• There is enough space to place the driver as on the picture.
• You need to drill two hole in the frame on the back for the two screws to hold the driver.
• Take you time to mark where you need to drill as it will be visible from the outside later.
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步骤 3 Connect the power
• Connect the power directly to the 12V power supply.
• Cut the cable to the Z-axis at approx 15cm from the plug of the motherboard.
• Save the 15cm left!
• Connect the A-, A+, B- and B+ to the right place.
• Use as much as possible the X and Y connection as a reference to connect the Z!
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步骤 4 reconnect the control signals
• Use new wires to connect the control signals from the mother board to the external driver.
• Carry over the way is is connected on X and Y.
• use later zip-tie to prevent all the cable you add to move and vibrate when the printer will be running.
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步骤 5 Move the control plug
• The whole idea is to bypass the original onboard driver (which is under dimension, I think).
• You can remove the mounting screws of the motherboard to remove the connector and reuse it on the similar position as X and Y.
• OR you can simply solder the each wire, one by one.
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步骤 6 adjusting settings
• I selected 2,1A: SW1=off SW2=on SW3=on.
• I selected 3200pulses/rotation: SW5=on SW6=on SW7=off SW8=on to match the the movement of the printing surface.
• You can close the bottom of the frame and connect back the power cable to give a try!
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