2025-04-12
Due to prolonged non-use, inkjet printers may encounter various faults and issues.
High Voltage Fault
Cause: The high voltage sensor detects an imbalance in high voltage.
Specific reasons:
a. Foreign objects are touching the high voltage deflection plate.
b. The high voltage deflection plate is dirty.
c. The high voltage sensor itself is overly sensitive.
Solution:
a. Clean the high voltage deflection plate and then start the machine normally.
b. If this situation occurs, it may frequently report high voltage faults, but the deflection plate is clean. This needs to be addressed by a professional technician; you can call our after-sales service.
Charging Fault
Specific reasons:
a. There is ink in the charging slot.
b. Fault in charging ink dot detection.
Solution:
a. Turn off the inkjet printer (including the power), and clean the charging slot. If necessary, disassemble the charging slot for cleaning. After thorough cleaning, wait for the charging slot to dry and restart.
b. This fault is often caused by multiple factors, starting with the ink. Check the viscosity and shelf life of the ink, and of course, the quality of the ink (compatible inks). Then observe the splitting, check the ink pressure, adjust the voltage as needed, and ensure good splitting. This approach generally resolves the issue. The charging slot itself may also be damaged; contact our after-sales service.
Character Loss
Ink dots have fallen onto the edge of the recovery tube, causing ink to cling to the recovery tube (ink accumulation in the recovery tube).
Specific reasons:
a. Is the ink line position correct?
b. Is the ink dot splitting normal?c. Is the ink normal (ink viscosity BFT, ink shelf life, compatible consumables)?d. Is the grounding of the inkjet printer effective (often overlooked by customers and some engineers)? Grounding is very important; the consequences can be severe!
Recovery Tube Fault
The recovery tube sensor does not detect ink flowing through the recovery tube.
Specific reasons:
a. The ink line is abnormal (no ink line ejected or the ink line is off).
b. The recovery tube is blocked.
c. The recovery sensor is damaged or not connected.
Solution:
a. Check the ink supply circuit. Clean the nozzle plate and perform ink line calibration.
b. For blockage in the recovery tube, check the blocked position in segments.
c. Check whether the recovery tube sensor connector on the mainboard is installed correctly. Replace the recovery tube sensor.
Ink Viscosity Fault
The viscosity value of the ink exceeds the standard.
In some cases, the machine can operate normally, but some checks are necessary. Otherwise, it may not print normally after some time.
Causes:
a. The current viscosity of the ink is greater than the set viscosity value. The ink viscosity is too high.
b. The current viscosity of the ink is less than the set viscosity value. The ink viscosity is too low.
Solution:
a. Check whether there is solvent in the solvent tank. Verify whether the solvent addition circuit is normal.
b. If the machine has been turned on and off multiple times in a short period, check whether the solvent addition circuit is normal. For specific methods, contact a professional repair engineer from our company.
Viscometer Fault
Inkjet printers have high requirements for ink viscosity. Viscosity refers to the thickness of the ink, not its concentration. However, viscosity is related to concentration and temperature: the higher the concentration, the higher the viscosity; the higher the temperature, the higher the viscosity. Therefore, inkjet printers have different viscosity settings at different temperatures.
If the current viscosity differs too much from the set value, the printer may not print well and report an ink viscosity fault.
Solution: If the ink is too thin, pour it out and let it ventilate or use a fan to evaporate the diluent in the ink. If it is too thick, manually add solvent. Once the viscosity is normal, observe whether it changes again. If the viscosity changes significantly, there may be an issue with the diluent addition circuit, which requires further inspection.
Possible causes: Viscosity measurement circuit blockage or insufficient flow; poor contact or damage in the ink viscosity measurement circuit of the printer.
Repair method: First, observe the indicator lights on the circuit part and measure the voltage to determine if there is a problem. Then, check the ink flow part of the viscosity measurement. You can detach one end of the viscometer, connect it to a beaker, and observe the flow. This facilitates identifying which segment of the pipe is problematic. Check from simple to complex. If difficulties arise, you should contact the printer supplier at any time. If you feel unable to repair it yourself, call the inkjet printer supplier and report the fault phenomenon and the checks you have conducted.
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