Mainboard Precautions

Power Indicator Light

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• When powered only via TYPE-C without connecting other mainboard power, at least two LEDs should be lit: 3.3V and 5V
• After connecting the mainboard power supply, the mainboard power LEDs 3.3V, 5V, and 12V should be lit
• The mainboard power indicator lights on the lower left will only light up normally after the driver power 0-2, driver power 3-7, and heated bed power are connected

Troubleshooting

Note

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

• If 3.3V and 5V are not lit, check the mainboard 5V jumper

• If the issue persists after replacing the jumper and Type-C power is confirmed to be supplying correctly, please contact after-sales support

• If any one of 3.3V, 5V, or 12V is flashing, it indicates a chip short circuit; please contact after-sales support

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Drivers

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

Endstop Ports

• Except for the last driver port (Drive7), which has a sensorless homing jumper, the sensorless homing for all other driver ports is directly connected to the endstop ports

• If an endstop port is found to be non-functional, you can switch to another endstop port or cut the sensorless homing pin on the driver

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Firmware Flashing

• The mainboard is flashed using a TF card
• Previous tutorials used DFU for flashing. If you need to restore the Bootloader, please go to Bootloader rescue page

Thermistors

• The mainboard thermistor ports support
  • NTC thermistors
  • PT1000 thermistors