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We will first determine if the full Z height needs resetting.
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On the LCD, click the knob and scroll down to the last menu Item for Advanced settings and click the knob. See Pic 1.
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Scroll all the way down to Calibrate Z Height and click the knob. See Pic 2.
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Click Home Towers. See pic 3. If the machine homes to the top of the machine properly, Skip to Step 3.
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If the machine only moves down a little bit and stops, or moves down, continue to step 2.
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If when you attempted to home the machine, the machine only moved down a bit, you will first want to shut the machine off for 30 seconds and turn it back on to reset it.
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With the machine back on, manually raise the carriages to the top of the machine so the carriages are near the home position. See pic 1.
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Click the knob on the LCD and go back to Advanced menu and click the knob. Then scroll to Calibrate Z Height and click the knob.
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On this menu go directly to Z Position and click the knob. See Pic 2.
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Now scroll the knob to lower the carriages down to bring the nozzle closer to the bed.
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When the nozzle is close to the bed, click the knob and go to Set new Z=0.00 and click the knob. The LCD should beep. See Pic 3.
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Now scroll to Home towers and the machine should now be able to home to the top of the machine properly. You can now move to the next step.
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