BTP-R990 User’s Manual
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7 Troubleshooting
In case of printer fault, consult this section for solutions and advice.
If you do not find a solution in this section, please contact your local dealer for assistance.
7.1 Printer doesn’t work
Problems
Possible causes
Solution
Printer has no power supply
Connect the printer power.
Printer power is off
Turn on the printer power.
LED is off and the printer
doesn’t work
Circuit is damaged
Contact your local dealer or
manufacturer.
7.2 Error LED and Buzzer
Problems
Possible causes
Solution
Paper end
Replace roll paper.
Cutter error
Refer to 7.4 Cutter error
troubleshooting.
Top cover lifts up
Close top cover.
Error LED flashes or
buzzer beeps
Print head is overheating
Turn off printer power and wait
until the print head turn to normal
temperature.
7.3 Problems during printing
Problems
Possible causes
Solution
Paper cannot be fed normally
Paper jam
Open top cover to check paper
path and cutter and remove
paper jam.
Paper jam
Open top cover to check the
cutter and remove paper jam.
Printer starts printing but
stops suddenly during printing
Printer status is abnormal
Solve as per Chapter 7.2.
Paper is not cut
Paper jam
Open top cover to check the
cutter and remove paper jam.
Paper roll is not installed
correctly
Make sure that the paper roll has
been installed correctly.
Paper is out of specification
Use recommended thermal
paper.
Dirty print head or platen
roller
Clean the print head or the
platen roller.
Printout is not clear or dirty
Print darkness is too low
Increase the print darkness as
needed.
Dirty print head or platen
roller
Clean the print head or the
platen roller.
Vertical column of print is
missing
Print head error
Contact your local dealer.
