Tilt homing failed #10101 (SL1/SL1S)

This article is also available in following languages: 

What happened?

The printer is displaying the message: Tilt homing failed, check its surroundings, and repeat the action.

Error name: Tilt homing failed

Error code: #10101

Issued when the printer has a mechanical failure when trying to move the tilt mechanism.

How to fix it?

The inability to home the tilt might indicate that there is a physical block of the tilt mechanism or an assembly error in the motor and the connecting rod. Please follow these steps to check the tilt assembly.

1. Open the eight M3x5b screws securing the cover. Be careful to unplug the USB & Power-cable before removing the cover completely.

2. Remove the M4x10 screw holding the right side of the touch screen. It is not necessary to remove the left screw. Just loosen it about a half-turn and you can slide the screen out, like a door. This will give you access to the motor and connecting rod.

3. Move the connecting rod with your hands and see if it has a full range of motion and if the blade sensor-trigger is between the two sides of the sensor. If so, jump to step 12. If any resistance is found, continue with the next step.

4. Remove the M3nN-nut from the screw that connects the tilt-mechanism and the connecting rod. You can do that by using a spanner or pliers to hold the nut and an Allen key to unscrew from the other side.

5. Remove the two M4x8 screws securing the tilt-motor holder to the bottom plate.

6. Remove the motor-holder and the connecting-rod from the tilt mechanism.
7. Go to Step 18 of 2. Base & Tower of the assembly guide, and remake the connection of the connecting rod and the motor shaft.

8. Reassemble first the tilt to the connecting rod, make sure that after tightening the nut the two parts are in contact.

9. Connect the motor holder to the bottom plate using the M4x8 screws.

10. Make sure that the optical sensor cable has its correct end connected to the sensor. The middle wire should be blue. In case the middle wire on the sensor connector is black, the connection will need to be swapped.
11. Move the connecting-rod manually and see if it moves smoothly until the blade sensor-trigger is between the two sides of the sensor.

12. Slide the LCD back to its place, and tighten both M4x10 screws holding it.

13. Connect the USB and Power cable and close the eight M3x5b screws that hold the cover. Tighten them diagonally at first, and add all the screws before tightening them. Pay attention to the cables from the electronics so that they are not pinched.

14. Run the wizard again.