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HD series
28
1. When the machine is turned on, press the printer test key
briefly, and the printer will automatically print out a piece of
blank paper.
2. In the case of power on, long press the printer test key for
three seconds, the printer will automatically print a section
of self-test content, indicating that the printer function is
normal.
15 FAQ
Here are some frequently asked questions and
answers about the HD3100 Pro.
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