¶ Required Tools for Inspection:
● M2.5 Allen wrench
● Multimeter
¶ 1.Poor Wiring or Cable Connection
Inspection Steps:
¶ Step 1: Turn off the printer
Before starting the inspection, make sure to turn off the printer and disconnect the power for safety.
¶ Step 2: Remove the Hotend Housing
① Use an M2.5 Allen wrench to loosen the two screws securing theHotend housing, and set them aside.
② Push the latch in the direction indicated by the blue arrow using your hand.
③ Carefully remove the white terminal of FAN0 and detach theHotend housing.
¶ Step 3: Remove the Printer Base Cover
① Place the printer flat with the bottom facing you. Use an M2.5 Allen wrench to loosen the four screws securing the base cover counterclockwise.
② Gently pry open the base cover at the cable outlet in the lower-left corner. Be careful to avoid damaging any components.
③ Disconnect the mainboard cooling fan (FAN2) cable fixed on the base cover. Handle it with care to prevent any damage.
¶ Step 4: Reconnect the Cables
Reconnect the NTC cable of theHotend and the interface of theHotend cable harness one by one.
¶ 2.Large Deviation or Abnormal Temperature Readings
¶ Tips:
This inspection should be performed when the printer is not heated.
Inspection Steps:
¶ Step 1: Relocate the Printer
Connect the printer to the power source and turn it on. Observe the temperature displayed on the main interface. The temperature at room temperature is typically around 25°C, which is influenced by the ambient temperature. If the ambient temperature is low, the displayed temperature will also be lower. If it is below 10°C, you may encounter this prompt. In that case, please move the printer to a warmer area.
¶ Step 2: Reconnect theHotend Cable Harness
If the temperature displayed on the main interface shows 0°C and deviates significantly from the actual ambient temperature, try reconnecting theHotend cable harness. If the issue persists, please consult the store where you purchased the device and provide them with detailed inspection steps. Professional technical support will assist you in resolving the issue.
¶ Step 3: Disconnect theHotend Cable Harness at the Mainboard End
If the temperature displayed on the main interface shows a higher temperature, such as "1XX°" or "2XX°", you could try disconnecting theHotend cable harness at the mainboard end. Observe if the temperature changes to 0°C. Please consult the store where you purchased the device and provide them with detailed inspection steps and results. Professional technical support will assist you in resolving the issue.
¶ 3.Hardware Inspection
¶ Tips:
Performing a hardware inspection requires a certain level of electrical knowledge and ensuring safety. Follow the steps below:
Inspection Steps:
¶ Step 1: Turn off the printer
Before starting the inspection, make sure to turn off the printer and disconnect the power for safety.
¶ Step 2: Measure theHotend NTC Resistance
Remove the T0 NTC terminal using your hand or a tool. Set the multimeter to the 200KΩ range. Measure the resistance value of the T0 terminal at room temperature (25°C). The resistance value should be within the range of 100±10KΩ. If it is outside the range, there may be an issue with theHotend. You could try replacing the hotend to troubleshoot the problem.
¶ Step 3: Test the Continuity
Set the multimeter to the continuity mode and test the continuity of theHotend adapter board's NTC pins (matching the corresponding positions as shown in the diagram). If you hear a beep sound, it indicates that theHotend adapter board is functioning properly, confirming the continuity. If there is no sound, there may be an issue with theHotend adapter board. You could try replacing theHotend adapter board to troubleshoot the problem.
¶ Step 4: Measure the NTC Voltage at the Mainboard End
Connect the printer to the power source and turn it on. Set the multimeter to the 20V DC voltage mode. Place the black probe (negative) on the second pin from the right at the T0 port and the red probe (positive) on the third pin from the right at the T0 port on the mainboard. Measure if there is a voltage of 3.3±0.3V at the NTC pins on the mainboard. If the measured voltage falls within the normal range, it indicates that the mainboard is functioning properly. If the measured voltage is outside the range, there may be an issue with the mainboard. You could try replacing the mainboard. (Note: This method requires working with electricity. Please ensure electrical safety and follow the corresponding positions shown in the diagram for measurement.)
The disassembly steps correspond to the assembly steps in reverse order. When Assemble again, follow the reverse order of the disassembly steps.
If the above troubleshooting methods did not resolve the issue. It is recommended that you create an after-sales work order to feed back the process and results of the previous inspection to the after-sales engineer. After-sales engineers will help you solve the problem.
Create link:Problem processing (work order) submission platform