Printer Cleaning - aqprox appPOS80WIFI Guia Del Usuario

12. Printing test: Click "Test printing" in "Normal" option, if the page is printed out, it means
that the port configuration is correct.
After completing the above mentioned procedures, the printer setting has been finished,
it can be used for printing.

Printer cleaning

When any of the following occurs, the printing head shall be cleaned:
• Printing is not clear
• Certain column on the printed page is not clear
• Paper feeding makes louder noise
Printing head cleaning procedures:
• Turn off the power of the printer, open the upper cover, remove the paper if any
• If just printing, wait till the printing head becomes cool completely
• Take the absolute ethyl alcohol with cotton cloth (shall wring up) to erase the dust and
dirt on the surface of the printing head
• When the absolute ethyl alcohol is evaporated completely, close the upper cover,
and print the test page again.
Notice!
1. It shall make sure the power is off for daily maintenance.
2. Do not touch the surface of the printing head with hands or metal parts,
and do not use tools like tweezers to scratch the printing head, printing rub-
ber roll and the surface of the sensor.
3. Do not use the organic solutions such as gasoline and acetone and so on.
4. Printing can be continued only after the absolute ethyl alcohol evaporates
completely.
Safety and Maintenance Instructions
- Do not use this product in a location with volatile substances such as alcohol or paint
thinner, or near a fire. Doing so may cause an electric shock or fire.
- Turn off your equipment immediately if it produces smoke, a strange smell or unusual
noise.
- Improper use can cause a fire. Unplug the equipment immediately and contact your