Operator`s manual

30
To clean the paper sensor, follow the steps below:
• Turn off the power and open the upper cover.
• Lift the print head to access the paper end sensor (see figure 3-7).
• Wipe off dust and stains on the surface of the paper end sensor with a soft cotton cloth dampened
with isopropyl alcohol.
• Allow isopropyl alcohol to evaporate, press print head module and close upper cover.
5.2.2 Cleaning paper loading sensor
The paper end sensor should be cleaned whenever the following circumstances occur:
• The paper does not retract back to normal printing position during semi-automatic paper loading.
• Print motor runs in reverse direction for an abnormally long time during semi-automatic paper loading.
• The paper does not retract to normal printing position after printing.
To clean the paper loading sensor, follow the steps below:
• Turn off the power and open the upper cover.
• Lift the print head to access the paper loading sensor (see figure 3-7).
• Wipe off dust and stains on the surface of the paper loading sensor with a soft cotton cloth dampened
with isopropyl alcohol.
• Allow isopropyl alcohol to evaporate, press print head module and close upper cover.
5.2.3 Cleaning paper out sensor
The paper out sensor should be cleaned whenever the following circumstances occur:
• PRESENTER cannot hold paper normally.
• PRESENTER cannot perform retracting function normally.
To clean the paper end sensor, follow the steps below:
• Turn off the power and open the PRESENTER upper cover.
• Locate paper out sensor (see figure 5-1).
• Wipe off dust and stains on the surface of the paper loading sensor with a soft cotton cloth dampened
with isopropyl alcohol.
• Allow isopropyl alcohol to evaporate, press print head module and close upper cover.