Failure symptoms | Possible causes | Solutions |
Power indicator is not on | The printer is not powered on | Connect the printer to power |
| The printer power button is not turned on | Turn on the printer power button |
| Power cord damage | Replace the power cord |
| Circuit board damage | Contact dealer or manufacturer |
Abnormality indicator is on | The printing paper is out of use. | Install new paper roll |
Abnormality indicator is on; Voice broadcast: Printer voltage is too low, please check | Abnormal input voltage | Turn off the printer and check the input voltage |
Abnormality indicator flashes | Print head overheating | Wait until the print head cools to recover |
| Paper blocked | Open the upper cover, check the paper outlet and remove the blocked paper. |
The network indicator is not on | Device disconnected from the server | Double-click the pairing button to print the network self-inspection page and check according to the self-inspection report. |
The printed content is not clear or tainted. | Print head damaged | Replace printer core. |
| Dirty print head or paper feed stick | Clean print head or paper feed stick. |
Print out a blank page | Printing paper consumables are reversed. | |
| Paper blocked | Check whether the paper roll is loaded correctly. |