¶ Error message
HMS_0300_0D00_0001_000B: The Z-axis motor seems got stuck when moving up, please check if there is any foreign matter on the Z sliders or Z timing belt wheels
¶ What it is
This error shows that when the Z axis is moving up, the Z motor detects an abnormally large force that stops the motor from spinning.
Usually, the possible reason might be:
- There is something on the table that has stuck / partially stuck the Z-axis motor or the Z-axis timing belt wheels, which are at the bottom of the machine
- There is stuff on the Z-axis slider when the hotbed is moving up, this stuff stuck between the Z-axis slider and the Z-axis
- When the heat bed was near the bottom of the chamber, the Z-axis slider was stuck by something on the bottom.
- The force sensor is abnormal, which makes the machine cannot detect the touching event when the nozzle touches the heat bed until the Z-axis motor detects high load and stop.
- The heat bed cable is dragging the heat bed from moving up
- Wrong screw screw has been installed when installing the AMS-HUB.
¶ Troubleshooting guide
¶ Step 1
Lift up the printer front a bit, and check if there is anything that will stick the Z-axis timing belt. Notice that the rubber foot is stuck on to the bottom of the printer, if the printer is pushed on the place surface, the rubber foot may get pushed off and gets stuck into the Z-axis timing belt ( where as shown in the red box below ):
¶ Step 2
Lift up the back of the printer a bit, and check if there is anything that will stick the Z-motor and timing belt wheel (as shown in the red box below )：
¶ Step 3
Lower the heat bed, and check if there is anything on the Z-axis slider upper surface, especially the rear one that is partly hidden behind the inner liner :
Please also check whether the bearing sleeve on the three Z sliders is raised. If it is raised, please get in touch with after-sales service.
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¶ Step 4
check the 3 holes on the bottom of the chamber, clean out if there is anything inside, below is an example:
¶ Step 5
Check if there is visible interference between the heatbed and the excess chute.
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Solution: Homing Z axis failed - Heatbed and excess chute interfered
¶ Step 6
raise the hotbed slowly, until it almost reaches the nozzle, then look into the inside of the liner from the chamber, to see if the hotbed cable next to the z-axis lead screw is dragged tight. If the shape of the cable is similar the the picture below, then it may be dragged tight:
Then you have to insert your finger into the gaps and drag the cable out from the inner of the electric case, as shown below, CAUTION : the liner edge may be a bit sharp, be careful or wear gloves when doing this step
¶ Step 7
If you have installed the AMS-HUB or AMS-BUFFER, if the screw is over tighten, that may also stick the z-axis when the bed is near the nozzle, so try loose these two screws for 1~2 rounds :
¶ Step 8
the steel rod may have moved under violent shipping, so the z-axis slider needs to be re-adjusted, see the picture below:
¶ 8.1 :
¶ 8.2
¶ 8.3
¶ 8.4
¶ 8.5
¶ Step 9
After the above steps, retry, tap the "home" button, and watch the homing process to check if the nozzle can touch the hotbed surface normally. If the homing is successful, then homing z-axis failed error will disappear automatically.