¶ What does it look like
The heated bed didn't heat up as expected
¶ How to fix
The error may be caused by:
- The cable between the motherboard and the heated bed control board is loose
- The motherboard or the heated bed control board is damaged
- The heated bed is damaged
¶ Tools necessary for toubleshooting
- A 2.0 mm Allen key
- A multimeter
¶ Troubleshooting steps
¶ Re-plug the cables of the motherboard and the heated bed control board port
Re-plug the cables to ensure they are firmly connected.
- Power off the printer and unplug the power cord. Loosen the 10 screws securing the bottom cover of the printer using a 2.0 mm Allen key.
- Re-plug the cable of the “HBED" port on the motherboard and check the pin of the fuse. (The figure below shows normal pin.)
- Re-plug the cable of the “HBED" port on the heated bed control board and check the pin of the fuse. (The figure below shows normal pin.)
- Re-fix the 'N' cable and the "L" cable of the "OUTPUT" port on the heated bed control board using a Phillips screwdriver.
¶ Check the motherboard indicator and the heated bed control board indicator as the heated bed being heated
If the motherboard and the heated bed control board are normal, the indicator light will flash or go out.
- Power on the printer. Set the temperature of the heated bed to 60 ℃.
- Check the motherboard indicator and the heated bed control board indicator as the heated bed being heated.
Warning: Do not touch any electronic components after powering on the printer to avoid electric shock.
If the motherboard indicator does not flash, replace a new motherboard. If the heated bed control board indicator does not flash, replace a new heated bed control board.
¶ Measure the resistance value of the heated bed cable.
- Power off the printer and unplug the power cord.
- Adjust the multimeter to the "Ω" gear and check the resistance of the two rows of "N" and "L" in the "OUTPUT" port. The normal resistance is about 50Ω.
If the value is abnormal, replace a new heated bed.