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4.3 Troubleshooting Guide
The following guide lists some of the most common problems that may be
encountered when operating the B-443 bar code printer. If the printer still does
not function after all suggested solutions have been invoked, please contact the
Customer Service Department of your purchased reseller or distributor for
assistance
Problem Solution
Ribbon does not advance or rewind Turn off the printer power. Adjust and
re-install the ribbon and label, and
then turn on the printer power again.
Poor print quality Clean the thermal print head.
Adjust the print density setting.
Ribbon and media are not compatible.
Power indicator does not illuminate Check the power cord, see whether it
is properly connected.
ON-LINE indicator is off. ERR. LED
flashes
Out of paper or out of ribbon
Calibrate the sensitivity of gap sensor.
ON-LINE indicator is off. ERR.
Indicator is on
Command syntax is not correct.
Rewind ribbon paper core is not
installed.
Serial port baud rate setting is not
correct.
Continuous feeding when printing
labels
Calibrate the gap sensor.
Note: When the voltage is too low or when the printing covers a wide
range on the label, the print density may become inadequate. In this
situation, please lower the print speed to secure normal print quality.