Brother PJ673-K Manual page 62

Chapter 5
Problem
Head or motor is cooling down
Data reception error
Printer is in boot mode
NOTE
For errors not described above, see the next chapter, Troubleshooting on page 60.
58
Solution
The thermal head or motor is too hot.
Head:
If the thermal head becomes too hot, the thermal head may
produce imaging on the paper in areas not intended to be
printed. This phenomenon may occur when printing a large
number of documents with a great deal of text and a high print
density.
To avoid this, the printer will stop, and resume printing after the
print head has cooled down.
To avoid or delay the onset of this condition, print using a lighter
density setting, reduce the amount of black space being printed
(for example, remove background shading and colors in graphs
and presentation documents), and make sure that the printer
has adequate ventilation and is not located in an enclosed
space.
Motor:
Do not use the printer continuously. If the printer is used
continuously, the motor will become too hot. In this case, the
printer will stop and resume printing after the motor has cooled
down.
NOTE
This condition may occur more often when the printer is
used at high altitude (more than 10,000 feet (3,048 m)) due
to a lower air density available to cool the printer.
With unstable communication, it may not be possible to receive
data correctly. Improve the communication conditions, and
then establish the connection again.
This issue must be resolved.
Contact your reseller or Brother Customer Service for
assistance.