¶ 1. Phenomenon description
The machine displays an error with key code: 2565 during preheating on the screen.
¶ 2. Cause analysis
The heated bed temperature has not reached the set temperature.
2.1 There is an anomaly in the heated bed's heating function.
2.2 There is a malfunction in the mainboard's heated bed heating function.
¶ 3. Troubleshooting and solution
3.1 Reconnect the heated bed heating cable and thermistor wire; check if the heated bed wires are damaged.
3.2 With a multimeter available, check if the voltage at the motherboard's heated bed heating port is normal during heating.
