Before troubleshooting, the main power supply of the equipment must be turned off, and the residual power on the board must be released after 2 minutes of standing. It is strictly prohibited to plug and unplug the drive board and solenoid valve wiring with power on to avoid burning out the electronic control components.
The left and right rows of electronic jacquard faucets are not woven, which is a typical regional fault of the entire row. According to the order from easy to difficult, more than 90% of the faults can be quickly located and solved:
🔍 Step 1: System software self check positioning
Enter the system testing interface, run the driver board detection function, check whether the corresponding fault diagnosis driver board status displays "X", and directly lock the driver board area where the fault is located.
Run the full inspection function of the solenoid valve to confirm whether all the status of the solenoid valves in the fault row are marked as abnormal, and eliminate the possibility of a single solenoid valve fault spreading to the entire row not working.
.Check the encoding of the dip switch S1 on the driver board, confirm that the address code of the row of driver boards is not duplicated or set incorrectly, and avoid signal addressing failure causing no output in the entire row.
.🔌 Step 2: Wiring and Power Supply Troubleshooting
Check the power supply wiring of the corresponding drive board in the fault diagnosis, measure whether the input voltage is within the rated 12V range, investigate the oxidation, disconnection, and looseness of the wiring pins, re plug and clean the pins, and then test.
Check the entire output wiring from the drive board to the solenoid valve group, confirm that there is no external pulling causing the entire signal line to break, replace the spare wiring and cross verify whether the fault has been transferred.
.Check the power supply fuse of the corresponding channel on the interface board, confirm that the 2A-3A fuses are not blown, and rule out the problem of local power supply interruption.
.🔧 Step 3: Troubleshooting Hardware Components
Replace the faulty driver board with the same model of intact driver board. If the fault disappears, it indicates that the output driver chip of the original driver board is damaged, and the driver board can be replaced directly. If the fault persists after replacing the driver board, check if the common return line of all solenoid valves in the row is open. If the common end of the entire row of solenoid valves is disconnected, it will cause all coils to fail to form a circuit and not operate at all. All the above troubleshooting is normal. Test the output channels corresponding to the entire row of the interface board, confirm that there is no hardware damage to the channels, and replace the interface board if necessary to troubleshoot.
⚙️ Step 4: Mechanical verification
Manual turning, check whether all the connecting wires and vertical hooks corresponding to the fault diagnosis are stuck by foreign objects, and whether the lifting height of the knife is offset, causing the entire row of hooks to be unable to hook the lifting knife properly, even if the solenoid valve is activated, the jacquard cannot be completed.
Check if the holes corresponding to the entire row of the eye plate are blocked by flying flowers or fluff, and if the thread movement is stuck, causing the illusion of the entire row not being woven. After cleaning the flying flowers, it can be restored to normal.
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