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Chapter 9: Troubleshoot
After turning on the printer, the 12V, 24V, and 35V LED on the connecting board are lit on. And also, the
D4 LED on the main board is lit on. D1 and D2 LED are lit on when connecting the printer to the computer
by USB cable.
After system initialization, the carriage will move back to the home position slowly. The carriage will
stop after detect the home magnet. The system is ready to print. At the same time, printhead start flash
jetting. Open the printmon software, the carriage will move back to home position again.
1) After turning on the printer, carriage move back to home normally. The interface of printmon
becomes grey
：
a)
Check whether the driver is installed properly. “EPOWER USB DEVICES” should be shown in the
device manager.
b)
Check whether the USB cable is defective, or connected improperly.
c)
Check whether the main board is defective
2) Carriage is not moving after turning on the printer
：
a) Check whether the 12V LED on the connecting board and D4 LED on the main board are lit on. If
those LED are not lit on, check the 12V input.
b) Check whether the home sensor is defective, or connected improperly.
c) Check whether the 40P connector on the connecting board and the main board is plugged in
properly, or defective.
d) Check whether the signal cable of the x motor driver is plugged in properly, or defective.
e) Check the connection between the x motor and the encoder
3) Carriage is moving to opposite direction after turning on the printer
：
a) Check whether the signal cable of the x motor driver is plugged in properly, or defective.
b) Check the connection between the x motor and the encoder
4) Ink pump keep working
：
a) Check whether the floating sensor in the subtank is working properly.
b) Check whether the connection of the 18P flat cable between the connecting board and the printhead
board.
c) Check whether the corresponding LED for this specific color pump is on. If the LED is on, please
change the connecting board.
5) Pump is not working, and the alarm is ON
：
a) Check whether the 24V power supply is normal.
b) Check whether the pump is working properly.
c) Check whether the connection of the 18P flat cable between the connecting board and the printhead
board.
d) Check whether the floating sensor in the subtank is working properly.
e) Check whether the corresponding LED for this specific color pump is on. If the LED is on, please
change the connecting board.
6) Flash jetting is normal when turning on. After printing for awhile, does not flash jetting, but
printing normally
：
