Troubleshooting Guide

4.2.2 Reloading the storage Card
4.2.3 Refresh the storage card.
4.2.4 Wipe the metal contacts with an eraser.
4.2.5 If the computer can read the storage card normally, apply for
replacement of the motherboard. For specific replacement methods,
contact the after-sales personnel.
4.3 USB data cable does not work
4.3.1 Retry after re-installing the motherboard driver
4.3.2 Replacing the normal working computer and retrying
4.3.3 Replace the USB cable to confirm that both the computer and the
printer are working properly.
4.3.4 Apply for replacement of USB cable
5. Printer Host (only professional after-sales personnel)
5.1 motherboard has a problem
5.1.1 Ask the after-sales maintenance personnel to fix it.
5.2 Display screen is black , white, or blurred
5.2.1 Check the display cable.
5.2.2 Check if the cable shielding tape is normal.
5.2.3 Remove high frequency interference sources.
5.2.4 Apply for one new LCD display.
5.3 Power Problems
5.3.1 Check if the voltage switch is set to the local voltage range