BK-T680 User’s Manual
31
7.2 Solution for common errors
7.2.1 Problems during paper loading
Problem
Possible reasons
Solution
Paper roll can’t be loaded into
paper holder smoothly.
The core ID of paper roll does
not match the printer.
Replace paper.
The printer can’t feed paper
automatically.
Paper head is irregular;
paper jams;
The paper out sensor is not
covered by paper head;
Dust and wastepaper cover the
paper out sensor.
Dispose the paper head as requirements;
Remove jammed paper;
Check the front head of paper to confirm
that the paper out sensor is covered fully;
Clean the paper out sensor.
Paper not stops at the normal
printing
position
after
automatically paper feeding.
Dust or wastepaper covers the
paper out sensor.
Clean the paper out sensor.
Table 7.2-1 Problems during paper loading
7.2.2 Problems during printing
Problems
Possible reasons
Solution
The receipt can’t be ejected out
smoothly.
Paper jams.
Check paper path, remove wastepaper
and reload paper.
Printout is not clear.
The paper is loaded in wrong
direction or its quality is poor;
Print head needs cleaning;
Print darkness is too low;
Input voltage is too low.
Make sure the paper roll is loaded
correctly;
Use
recommended
paper
or
its
equivalents;
Clean the print head;
Adjust print darkness(
＊
);
Use the power supply that meets
requirements.
Cutter works abnormally.
Paper jams in cutter;
Cutter is broken.
Check if there are sundries in cutter
path(
＊
);
Contact
with
SNBC
or
your
local
distributor.
Printing data is lost and no
printing.
The top cover module is not
closed;
Paper jams.
Close top cover module properly;
Remove jammed paper.
Table 7.2-2 Problems during printing
＊
To adjust print darkness, contact with our distributors or SNBC;
＊
If paper jams in cutter, please remove the jammed paper first, and then press CUT button to reset the
cutter.
7.2.3 Problems during paper out
Problems
Possible reasons
Solution
The printer stops printing and
warns errors during printing.
Paper end;
Paper jams in cutter;
Dust or wastepaper covers the
paper near end sensor;
Paper near end (Printer is set
to stop printing when paper
near end).
Install a new paper roll;
Check if there are sundries in cutter path;
Clean the paper near end sensor.
Table 7.2-3 Problems during paper out
Note:
Contaminated paper may cause detection failure.
