¶ Fault Description&Required Accessories and Tools
- Troubleshooting temperature anomalies frequently encountered during maintenance of tool head components.
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- Tools required: 1. Tweezers 2. H1.5 hex key 3. PH0 Phillips screwdriver
- During operation, material jams in the extruder and nozzle clogging at the hot end may occur, necessitating nozzle cleaning and head disassembly. This can cause abnormal temperature readings, printing errors, and operational axis faults, with the MCU displaying ‘THR’ as shown in the image:
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¶ Temperature anomaly detected. Please check the following:
Step 1: Inspect the LED indicator on the tool head's small circuit board.
Upon powering up, verify that the green LED on the tool head's small circuit board illuminates correctly. If the green light does not illuminate, as shown in the diagram, check whether the cable port is properly connected. As shown in the diagram:
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Step 2: Check the securing screws at the cable port of the tool head
Please inspect the cable terminals and screws (two each of M2.0*6 cylindricalhead self-tapping screws and M2.5*6 round-head screws) on the tool head. Ensure they are aligned and properly connected, then tighten the screws securely.
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Step 3: Inspect the tool head cable & tool head circuit board interface
Inspect whether the inner side of the cable terminal is properly aligned and installed with the tool head's small plate socket. Should misalignment occur or gaps appear due to improper fitting, check whether the tool head's screw studs are loose or detached, causing poor contact. This may result in signal disconnection errors during printing operations, triggering the error message: mcu ‘THR’. The screen temperature display will also become abnormal. As shown: a. Terminal not properly connected, screws not tightened; requires reinstallation. As shown in Figure b: Correct installation with screws fully tightened, leaving no gaps.
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Step 4: Inspect the cut-off material & cutting blade plate
Power off and inspect whether the (filament breakage, cutter) connection terminals are properly connected — disconnect the main connection terminals for (filament breakage, cutter) on the tool head circuit board as shown in Figure a: Restart the machine. If the screen displays normal temperatures, replace the (filament breakage, cutter) circuit board. As per Figure b: This indicates that during extruder cleaning, the terminal connectors on the (Material Break & Cutter) sub-board were incorrectly reversed during disassembly/reassembly, or the pins on the (Material Break & Cutter) subboard socket touched the pins, causing a short circuit on the tool head subboard. This resulted in tool head disconnection and abnormal temperature display. As per Figure c: (Correct & Incorrect Illustrations).
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Step 5: Inspect the hot end
Power off the machine and inspect the thermistor wire and heating ceramic element on the hot end for damage. Using tweezers, gently pry up and remove the terminals from the hot end circuit board, as shown in Figure a. Restart the machine. If the screen displays a negative temperature reading for the nozzle, as shown in Figure b: This indicates a short circuit in either the thermistor wire or the ceramic heating element on the hot end. Replace the hot end with a new one.
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***Kindly Note***
🔧Operational Precautions
- Power-off operation
⏹Before removing the plug-in terminals, the power supply must be completelydisconnected.
⏹Powering up may cause the tool head circuit board to burn out, potentially triggering a chain reaction of damage to the host computer's mainboard.
- Specification for Specialised Tools
⏹Use the tweezers tool to perform the operation
⏹When operating, gently lift and pull out; do not use excessive force to pull
⏹Violent operation will result in:
⏹Damaged terminal leads
⏺Seat detachment/damage
⏺Poor contact causing a short circuit - Warranty Terms and Conditions
⏹The following damage caused by improper operation is not covered by the warranty:
⏺Seat detachment/deformation
⏺Terminal lead breakage
⏺Tool head circuit board burnt out
⏺Faulty lower-level computer motherboard
- Accessories procurement channels
⏹Official accessories may be purchased via” https://www.artillery.com”
⏹It is recommended to use genuine parts to ensure compatibility.
¶ Temperature anomaly detected during new machine update. Important notes:
Step 1: Firmware update anomaly
Network anomalies or slow speeds during firmware updates may cause temperature display irregularities upon completion. It is recommended to enable your mobile hotspot and connect the device to it for the update. If, upon first entering the boot sequence after installing new firmware, a prompt for firmware update appears alongside abnormal temperature readings, select Cancel Update. As shown: a Proceed to the screen interface setup wizard, select the firmware version option, and when prompted to update firmware, select Firmware Update. As shown: b
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The Wi-Fi connection wizard has been updated to automatically restart and perform diagnostics. After completing the setup and entering the interface, please allow 1-3 minutes for normal operation to be displayed.
Step 2：USB-OTG Upgrade instructions
Should temperature display anomalies persist after the firmware update, please refer to the USB-OTG Upgrade instructions to connect the device to a host computer via USB and update the image file. If the above steps prove ineffective, Please email us at “support@artillery3d.com” for after-sales service.