Troubleshooting; Abnormal Print Effect; Abnormal Paper Detection; Printing With Noise - SNBC BTP-M300 Service Manual

7 Troubleshooting

If the printer works abnormally, consult this chapter below. If there are still problems that can not be solved,
please contact your local dealer for assistance.

7.1 Abnormal print effect

1) Problems: Characters are not clear.
Possible causes and solutions:
Ribbon ink is out, please change ribbon;
There might be a lot of dust on the print head, please clear it up;
Needles of the printer are worn out, please ask technical personnel to adjust the printing distance
or replace the print head.
2) Problems: Some characters dots are omitted.
Possible causes and solutions:
Print head cable is worn out, please ask technical personnel to replace it;
Needles of the printer are worn out, please ask technical personnel to replace the print head.
3) Problems: Print color is mixed
Possible causes and solutions:
The ribbon baseband is loose, please rotate the ribbon knob two to three times clockwise to tighten
the ribbon baseband;
The ink of ribbon is used up, please replace a new ribbon;
The installation of the ribbon is not correct, please install the ribbon again;
The toothed belt is too loose, please ask the technician to adjust the tension of the toothed belt;
The print spacing is too small, please ask the technical personnel to adjust the spacing;
The ribbon support plate deformed, please ask the technical personnel to replace it;
The paper guide elastic plate is deformed, please ask the technical personnel to replace it.

7.2 Abnormal paper detection

1) Problems: Printer alarm paper out mistakenly.
Possible causes and solutions:
The paper end sensor is damaged, please check whether the sensor is normal or not, if the sensor
is abnormal, please replace the sensor;
The main control board is damaged, please replace the main control board.

7.3 Printing with noise

1) Problems: Big noise during paper feeding.
Possible causes and solutions:
The paper feed motor is damaged, please replace it;
The paper feeding gear is worn out, please replace it.
- 37 -
BTP-M300 Service Manual