The z-axis stops running during printing, the touch screen shows printing, but the Z-axis is not working properly.

Please turn off the printer and turn the Z-axis screw by hand, if you can't turn the Z-axis screw by hand, the Z-axis screw may be jammed, please contact the technical support e-mail: support@uniformation3d.com for help.

If this area is unclickable but the rest of the touchscreen is working properly, there may be an issue with the touchscreen causing this problem. Contact Technical Support for assistance.

If the GK3 Ultra was working properly before the update, but the Z-axis is now runnig abnormally, it is likely that the wrong version of the firmware was used. There are two versions of the Z-axis for the GK3U: 1204 and 1205. Need to use the version that corresponds to your printer. (Usually, version 1205 is used). If you use the wrong firmware, the Z-axis operation will be problematic.

Please refer to the firmware update documentation to determine your printer's Z-axis version. Then, update the corresponding firmware and reboot the printer. This should solve the problem. If the problem persists, contact technical support: support@uniformation3d.com for assistance.

If the GK3 Ultra is unable to connect to a Wi-Fi signal, please follow these steps to troubleshoot the issue:

1. Check if the USB WiFi adapter's indicator light is blinking or on to see if the problem is with the USB port.

2. Since the GKtwo and GK3U have two USB ports, connect the USB Wi-Fi adapter to both the front and rear USB ports to determine if there is a problem with a specific port.

3. After the light on the USB Wi-Fi adapter turns on, wait a few moments for the printer to refresh the Wi-Fi signal list. Alternatively, click the Refresh button in the top right corner to refresh manually and see if the available Wi-Fi signals are listed.

1. The micro switch is causing the auto-feed to malfunction.

 After starting a print job, the material feeding icon appears, but the automatic feeding system does not run.

Remove the resin vat, make sure the plastic cassette of the automatic feeding outlet is properly placed, and then enter the automatic feeding menu. Click on the pipe cleaning function. When the countdown appears on the touchscreen, press the resin vat detection switch on the right side. If resin flows out of the feeding outlet normally after pressing the switch, then the resin pump is working properly. Usually, this occurs because the resin vat is not installed correctly, so the resin vat detection switch is not pressed down. This results in the resin pump not working properly.

 

2. The automatic feeding function does not work due to a disconnection of the liquid level sensor.

After turning on the automatic feeding function and opening a print job, the automatic feeding will not stop automatically when feeding to the resin vat. Even if the resin touches the metal sheet at the edge of the resin vat, it will continue to add resin to the resin vat without stopping.

A. Remove the resin vat and check if the metal probe of the level sensor is broken or tilted. If the metal probe cannot make contact with the metal piece at the bottom of the resin vat, the level sensor will not be able to properly judge the liquid level inside the resin vat, and it will continue to add resin.

b. Check that the resin vat is installed correctly. If it is not, the bottom of the level sensor's metal probe will not contact the metal contacts at the bottom of the resin vat. This will also prevent the sensor from properly determining the liquid level, which will prevent the automatic feeding from stopping properly.

3. A short circuit in the liquid level sensor caused the automatic feeding function to malfunction.

After enabling the automatic feeding function and initiating a print job, the system does not run; it prints directly, even when there is no resin in the resin vat.

a. Check if the metal sensor sheet inside the resin vat is covered with resin or another liquid. Wipe the metal sheet clean with a paper towel.

b. Remove the resin vat and the printing platform. Start a print job and press the right micro switch to simulate placing the resin vat.

If the automatic dosing does not work, the level sensor may be defective.

If the automatic dosing works, touch the left level sensor with your finger to simulate the resin reaching the set height. Under normal circumstances, the automatic feeding should stop after touching the level sensor. If it does not, the level sensor may be defective.

1. If there is a difference between the resin cartridge inserted and the resin capacity displayed on the touch screen, please re-calibrate the sensor by using the Volume Calibration function in the automatic feeding setup menu.

2. If the weight display on the touch screen does not change after inserting the resin cartridge and always shows 0 or 1200 ml, then there may be a problem with the weight sensor, please contact technical support: support@uniformation3d.com for assistance.

1. if the model and the raft (including the support) all fall off the platform, this is usually a leveling problem, please re-level the printing platform.

2. If the raft is attached to the platform and only the model falls off the support, the support head is likely too thin or underexposed, or there is a problem with the resin. Use a thicker support head, add denser support, and increase the exposure time slightly.

Reasons for rupture of the release film:

a. There is cured resin residue inside the resin tray, and the residue is squeezed when the printing platform is pressed down, piercing the release film. This is the main reason.

b. Printed model cross-sectional area is too large, resulting in too much release force, which may also lead to rapid breakage of the release film. Try to hollow out the model to reduce the exposure area. After hollowing, be sure to punch holes to prevent model adsorption.

Handling steps:

1. Clean or replace the screen protector.

If a small amount of resin has cured on the screen protector, moisten it with alcohol or IPA, and then gently scrape it off with a soft plastic scraper. If there is more cured resin, replace the screen protector.

2. Replace the release film.

 Replace the release film if it is broken to avoid more serious resin leakage.

Please follow the steps below to troubleshoot the problem:

1. Check the slicing settings and whether the model is hollow or drilled.

2. Check if the surface of the release film has become rough.

3.Check that the printer components are not loose and that the resin vat, resin vat clips, and printing platform are not loose after installation.

4. If all of the above checks are OK, print a Z-axis test model to ensure that the Z-axis is functioning properly.

Compression at the bottom of the model that is printed against the platform

 Reason: To ensure that the model can be adsorbed on the printing platform, the model that is printed against the platform will have compression at the bottom of the model. If the compression is too strong, please use the following methods to adjust.

1. Adjustment by leveling

Increase the leveling paper when leveling the print platform, which will increase the distance between the print platform and the LCD screen, but ensure that the model can be attached to the print platform. This will reduce the bottom of the compression.

2. Add support to the model for printing

 Because the bottom compression only affects the area where the bottom raft and the print platform are in contact, it will not affect the model on the support

1. Use the "vat cleaning" function to clean the resin vat, or pour out the resin after each print failure. This will prevent resin residue from piercing the release film or causing scratches.

2.If the film is cracked or has obvious marks on its surface, replace it in time to avoid affecting printing or causing resin leakage.

1.Please determine whether the UV light source at the bottom of the screen is on.

2.If the UV light source at the bottom does not light up during the exposure test, the issue may be caused by a loose cable or a faulty driver board. Contact the after-sales support email: support@uniformation3d.com for assistance.

3.If the bottom UV light source is on, but the LCD screen does not display the test pattern correctly, turn off the machine. Then, refer to the LCD screen replacement video to check that the wires from the LCD screen to the main board are normal and are installed in the correct direction. Check to see if the metal contacts of the wires are corroded or peeled off.

4.If there are no problems with the LCD wires, then there is usually a problem with the LCD screen, which needs to be replaced.

1. if the printer has a pop-up message “print err”, there is usually a problem with the sliced file,  please re-slice and print.

2.If the printer stops printing in the middle of a job without any prompts, there may be a power failure in the middle of the print job, and the printer reboots into the operation menu after the power comes back, in which case the printer stops printing without any prompts.