Skip this chapter if you have already installed the toolhead by following the instructions of the chapter Assembling the Machine Body of Ray.
Make sure the machine is powered off.
Do NOT plug or unplug any cables when the machine is powered on.
For subsequent instructions on how to fix the toolhead cable, the X-axis cable, and the air tube, refer to Step 27-29 and Step 30-33 in chapter Assembling the Machine Body of Ray for complete information.