BK-T680 User’s Manual
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5 Routine maintenance
Caution:
Before starting routine maintenance for the printer, make sure the power is turned off.
Do not touch the surface of print head with hands or metal. Do not use forceps so as to prevent print
head, platen roller and sensors being scratched.
Do not use organic solvent like gasoline, acetone and etc.
When cleaning print head or sensors, please wait for pure alcohol to evaporate totally before
starting printing.
It is recommended to do routine maintenance per month.
5.1 Cleaning mark sensor
When the following cases occur, the mark sensor should be cleaned:
The printer doesn’t identify marks correctly.
Steps for cleaning mark sensor:
1)
Slightly nip the latches on both sides of paper guide cover and pull outward the top of paper guide
cover to remove the paper guide module.
Figure 5.1-1 Cleaning mark sensor
Caution:
The cable of sensor on paper guide module is connected with main control board, thus do not
remove the paper guide module by force. Pull out the cable of sensor from the main control board
after slowly opening the paper guide module as the above method.
2)
Remove the thumb wheel as shown in figure 5.1-2, and then remove the screw where the mark
sensor is installed (refer to figure 5.1-2) and wipe off the dust or stains on the sensor surface with
soft cotton cloth dipped with pure alcohol (it should be wrung out). Wait for 5 to 10 minutes until
pure alcohol evaporates completely, and then assemble it in the reverse steps. Check the cable
connection after completing the assembly, and turn on the power if the cable is correctly
connected.
