5-3
Paper sensor error
Please check the following items:
A. Is label installed correctly? Please refer to previous 4. The LED is on red
blinking – Label runs out to load a roll of label and then press the feed button
to resume printing.
B. Is there any label stuck on the label sensor? Is there any pre-printed logo on
the label? Please initialize to reset the system.
Main PCB ass’y, feed gap sensor or black mark sensor failure.
Measure the current of pin3 of Q8. It is 5V DC when the label is detected and
0V DC for gap. If the voltage is not correct as above mentioned, the U23 ,CPU
(U1) or feed gap sensor may be broken. Please change the feed gap sensor
receiver first because the receiver sensor failure rate is higher than the
transmitter sensor.
5. The printer setting runs error.
Printer setting runs error:
Refer to the chapter of Initialization in Interface Specification to reset the
system.
6. Continuous feeding labels
The printer setting may go wrong. Please do the “Initialization” and “Feed Gap
and Black Mark Sensor Calibration”. (Refer to Interface Specification).
7. No print on the label
Is the label or ribbon loaded correctly? Refer to No, 4 Label runs out and
Ribbon runs out to load the paper or to load the ribbon.
Does the ribbon run out?
Is the thermal head connector connected?
Is the thermal head broken? Check it by printer self-test printout.
Is main PCB U21, U15, Q1 broken?
8. Printer does not print.
Printed by enclosed BarTender software
This may be driver conflict problem. Please remove all the drivers in the printer
folder and then re-install the driver for your printer.
Printed by printer command.
This problem is caused by incorrect syntax commands. B-SV4T printer will
ignore incorrect syntax commands. Please set the printer to the dump mode
and make sure the printed command is identical to the commands sent from
the application software.
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