Thermal Printers - Troubleshooting

If the printer is not working properly, check the following:

(1) Power Supply

• Is there any proble regarding specifications such as power supply capacity?
• Is the power supply working properly? (Check the power supply voltage.)
• Are all of the power supply grounds connected up together?
• Are the connectors loose, or are they connected up incorrectly?

(2) Cables

• Are there any breaks in the cables?
• Are the cables too long?
• Are the connections wired correctly?
  In particular, is the connector for paper out detection in accordance with the paper insertion method (see 6.4 setting the paper)?

(3) Others

• Has the fuse blown?
• Is the paper set correctly?
• Is the head's temperature normal?
  When the printing head base plate's temperature moves beyond the range of O°C to 60°C, the printer will not operate in order to protect the printing head.