Start here — before replacing any parts
With power off, determine whether the X-axis is mechanically blocked before investigating motor or firmware faults.
Confirm the actual RAY5 10W controller firmware and software connection method; generic GRBL codes may not be supported by every firmware.
Manual scope: Firmware, limit switch and stepper motor checks
Do these checks in order
Follow the steps below and keep a record of what changes after each one. Stop when an actual cause is confirmed.
Disconnect power, inspect the X travel area for a lodged object, packing debris or loose screw. Gently move the head by hand only as LONGER instructs.
Check belt condition and tension for missing teeth, fraying, too much slack or overtightness; compare X-axis motion with the functioning Y-axis.
Inspect the disconnected X-motor cable at the motor and control board for obvious damage or a loose connector. Do not hot-plug stepper leads.
Restore power only after the covers are safe. Check the E-stop, limit-switch indication and firmware status; use the normal supervised manual-jog command.
If the problem is gone
Free X motion returns after clearing debris, correcting a belt problem or reseating a loose cable: the cause is narrowed.
If the problem is still there
X remains stopped despite free motion and a good connector: LONGER documents electrical motor/driver comparison tests; these should be done by a trained technician with power isolated.
Which cause matches your result?
Use these more specific checks only when the earlier steps point to that possibility.
01Something blocks the X-axis travel
Unplug the machine and inspect the full rail path for scrap, loose tools or screws.
Remove the obstruction and verify smooth safe travel.
02The belt or rail needs attention
Inspect belt tension, wear and rail cleanliness while disconnected from power.
Adjust or clean using the maker's instructions; replace a damaged compatible belt.
03A motor cable, endstop or emergency stop is involved
Check the emergency-stop state and visually inspect motor/endstop connectors.
Clear a legitimate stop condition; do not bypass endstops. Damaged wiring requires service.
04A stepper motor or driver is defective
After mechanical checks, a qualified technician can test the relevant motor and drive channel.
Replace the correct motor or controller component only after electrical diagnosis.
How can I tell it is actually fixed?
Jog through the intended safe travel range at low speed; complete a small test rectangle before engraving.
Before buying a replacement part
Only use board, motor and limit-switch instructions specific to your actual RAY5 control-board revision.
Where this guidance comes from
Primary reference: View the manufacturer or manual reference ↗
Applicability: Firmware, limit switch and stepper motor checks. Source evidence: Manufacturer's model-specific troubleshooting.
The instructions are original English troubleshooting explanations derived from the listed technical facts; they are not a verbatim service manual. Do not apply them to an unverified revision.