Motherboard Precautions

Power Indicator

• When powered only via TYPE-C without connecting other motherboard power sources, at least two LEDs, 3.3V and 5V, should be lit.
• After connecting the motherboard power supply, the motherboard power indicator should light up 3.3V, 5V, and 12V.
• The power indicator at the bottom left of the motherboard will only light up normally after connecting the driver power supplies 0-2, driver power supplies 3-7, and the heated bed power supply.

Troubleshooting

Important Notes

• With no external devices connected (drivers, limit switches, 12864, etc.)
• When powered only via TYPE-C, at least the 3.3V and 5V LEDs should be constantly lit.

• If 3.3V and 5V are not lit, please check the motherboard's 5V jumper.
• If the issue persists after replacing the jumper and confirming that the Type-C power supply is normal, please contact customer service for after-sales support.
• If one of the 3.3V, 5V, or 12V LEDs is flashing, it indicates a chip short circuit. Please contact customer service for after-sales support.
  

Drivers

• Please note the driver power supply. The driver power is divided into two circuits: the first supplies power to drivers 3-7, and the second to drivers 0-2.
• The motherboard supports external drivers. Wiring and Configuration Tutorial

Limit Switch Ports

• Except for the last driver port (Drive7), which has an infinite limit jumper, the infinite limits of other driver ports are directly connected to the limit switch ports.
• If a limit switch port is found to be unusable, you can replace the limit switch port or cut off the driver's infinite limit pin.
  

Thermistors

• The motherboard's thermistor ports support:
  • NTC thermistor
  • PT1000 thermistor