BK-T680 User’s Manual
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4)
Wipe off dust and stains on the surface of the platen roller with soft cotton cloth dipped with
neutral detergent (it should be wrung out);
5)
Execute the assembly according to the reverse steps after the print head and platen roller are dry,
and then check the connecting cable and turn on the power after making sure that the connection
is correct.
5.3 Cleaning paper out sensor
When any of the following cases occurs, paper out sensor should be cleaned:
The paper can’t get back to normal printing position during semi-automatic paper loading;
Motor for printing reverses backward for long time during semi-automatic paper loading;
The paper can’t get back to normal printing position after finishing printing;
PRESENTER can not hold paper normally;
Not execute paper retraction after PRESENTER holding paper.
Steps for cleaning paper out sensor:
1)
Turn off the printer power;
2)
Slightly press down the locking axis of top cover in the direction shown in the figure 5.2-1 to open
the top cover module;
3)
Slightly press the latch on Presenter upper path in the direction shown in the figure 5.3-1, remove
the Presenter upper path module, then the dustproof cover of paper out sensor located on
Presenter path can be seen. Wipe off dust and stains on the surface of the dustproof cover with
soft cotton cloth dipped with pure alcohol (it should be wrung out);
Figure 5.3-1 Cleaning paper out sensor
4)
Wait for 5 to 10 minutes until pure alcohol evaporates completely, and then install the Presenter
upper path module and turn on power.
