Large format inkjet printers play an important role in advertising production, artistic reproduction, and industrial drawing printing, and their stability and output quality directly affect work efficiency and product quality. The editor has compiled some common faults and solutions in the production of eco solvent printer. Welcome to read and learn:
1. When the carriage is halfway through the journey, the stepper starts to feed paper, and the carriage gets stuck and does not move.
The 42V power supply cable is broken; replace the cable.
The fiber optic cable is faulty; replace the fiber optic cable.
The motherboard is faulty, sending an erroneous signal to feed paper; replace the motherboard.
2. The paper feeding is inaccurate, sometimes long, sometimes short.
The motor's synchronous wheel is loose.
The guide rail is worn out; consider replacing it with a spring that has a stronger force.
The software is infected; reinstall the software.
The driver or motor is faulty.
3. During printing, there is a chance that the software will restart when the heating fan is turned on.
The board card is interfered with; install insulating plastic around the board card.
Separate the machine and the fan's power strip.
4. The machine can only feed paper and cannot retreat; it can only move in one direction.
The signal from the motherboard to the stepper driver is lost; replace (repair) the Y-axis driver signal line.
The stepper driver is damaged; replace the driver.
The motherboard output is problematic; replace the motherboard.
5. The machine's LED screen keeps flashing.
The power board is faulty; replace the power board.
The positive and negative poles of the motor's 36V power line are reversed.
The 24V fan line is short-circuited.
The LED screen is faulty; replace the LED screen.
6. The double-head machine has light and dark lines when printing.
The horizontal position of the print head is not adjusted properly; recalibrate the print head's horizontal position.
Adjust the feathering mode or increase the feathering.
The paper feeding belt is too tight or too loose; adjust the tightness of the paper feeding belt.
7. The print head direction is misaligned on both sides during printing, but it is fine in the middle (double head).
Increase the material feed value in the settings under Y-axis.
Set to high-speed paper feeding.
8. The motherboard reports an error code.
Code 1: Check the scraper motor line and signal line.
Code 2: Check the lifting platform's motor line and signal line.
Code 4: Check the carriage motor encoder line; the home switch and the signal line from the home switch to the motherboard.
Code 8: The motherboard firmware is damaged; rewrite the firmware.
Code R: The fiber optic cable is plugged in reverse or is damaged, or the motherboard is faulty.
9. Ink breakage.
Check if the ink is used up.
Check if the ink supply system is smooth, inspect the ink bag, ink bag adapter, and ink tube.
The signal is interfered with; check the print head data line and 42V power supply line.
Inspect if the print head is damaged internally; replace the print head for testing.
The ink fluidity is not sufficient; replace the ink.
Check if there is a problem with the software.
Check if the ink stack and print head position are aligned; the ink pad is aged and cannot draw ink.
The ink bag is aged, and the remaining ink is insufficient.
The print head is aged and unusable.
10. Garbled text.
The signal is interfered with; check the print head data line, 42V power supply line, and fiber optic cable (for single heads, it is P2P3 two long flat cables).
The software is infected; reinstall the software.
The print head is damaged; replace the print head.
11. After starting up, the carriage moves left and right but does not return to the home position.
The horizontal motor gear ratio is incorrect; calibrate the gear ratio.
The motherboard program is faulty; replace the motherboard.
The motor or synchronous wheel is problematic.
12. Horizontal misalignment in printing.
The signal is disordered; check the grating ruler and grating decoder.
The X-axis gear ratio is incorrect; recalibrate the gear ratio.
The bidirectional calibration is not done properly; recalibrate bidirectionally.
The software is infected; reinstall the software.
13. The machine does not return to the home position after starting up.
Check the motherboard error code and inspect the machine according to the error code.
The power board voltage is abnormal.
The motherboard is damaged.
The lifting platform limit fault.
14. Printing 1Pass error.
Check if the computer's USB interface is loose and if the output voltage is stable.
The USB line is interfered with; replace it with an anti-interference USB line.
The motherboard data is erroneous; replace the motherboard.
Check if the grating decoder reads data correctly.
15. After printing, the machine automatically follows and may collide.
Turn off automatic following in CFG (bprintfinishuvhot=0).
16. The current 1pass number is not equal to the printed data.
Check if the printing speed is too fast; slow down the speed.
The motor is faulty.
17. The machine stops during printing.
Check if the USB line and computer port are not in good contact.
Check if the computer is in energy-saving mode or in a sleep state.
Check if the image is completely transmitted.
The fiber optic cable is problematic.
18. The printed image has severe ink flying.
Check how high the print head is (the height for Epson print heads is 1.8mm).
Check if the machine is grounded and if there is excessive static electricity.
Check the printing mode in the software (usually choose medium-point printing).
19. The suction fan cannot adjust the size.
Check if the 24V negative input and output on the suction adjustment module are reversed.
Check if the suction adjustment output voltage can change in size.
Check if the platform suction holes are unobstructed.
20. How to add curves in RuiCai drawing software.
Copy the decompressed curves to the AdjustCurve folder.
Re-add the printer in the printer settings and set it as default.
21. After printing, the carriage does not return to the original position.
Check the carriage's return speed.
Re-detect the carriage's gear ratio (you can increase the carriage travel to test the gear ratio).
Check the distance between the grating decoder and the grating ruler.
Check if the software is installed in the C drive (not recommended).
22. The printed image length is different from the specified length.
Check the gear ratio in the software's basic settings.
Check the size of the canvas and the size of the border settings.
Check the size of the stepper value.
23. When using the paper collector to collect paper while printing, the paper arches.
Check if the spike roll and pressure roller are parallel.
Check if the material and paper collector are level.
24. RIP image prompts file writing error.
Check if there is enough memory.
Check if the hard disk format is correct (usually NTFS format).
25. Ink leakage occurs after cleaning the print head.
Check if the ink pad position is correct.
Check if the flash spray frequency is too high and the flash spray time is too long.
In addition to the specific solutions mentioned above, there are some general maintenance suggestions that can help reduce the occurrence of faults in large format inkjet printers:
- Regularly maintain and clean the equipment, especially the print heads and ink system.
- Use high-quality inks and consumables to maintain print quality and mach
- ine performance.
- Ensure that the working environment's temperature and humidity are suitable to avoid affecting the ink viscosity and printing effect.
- Before operating, ensure that all connections are correct, including power lines and data lines.
- For software configuration and settings, follow the manufacturer's recommendations and avoid changing settings arbitrarily.
- Regularly check and replace worn parts such as transmission belts and sliders.
In summary, common faults of large format inkjet printers involve multiple aspects, each with specific causes and solutions. Users should take appropriate measures according to specific situations, while regular equipment maintenance, correct operation procedures, high-quality consumables, and a suitable working environment can effectively reduce the frequency of faults and extend the service life of the equipment.
