Qian DAYIN80, User Manual

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12: Printing speed is very slow for serial printer
A: follow this path and change the set accordingly : Dri-
ver -- Properties -- Device Settings
-- Print Mode -- Print as soft font.
13: Water or other liquid spills into the printer
A: Cut off the power,we can dry the main board or prin -
ter head with a hair dryer, careful of the temperature (
average 50 degree is ok ).
14: Print paper without any content (Blank).
A: 1.If the normal print is ok but self test page is blank
(no content), that mean the font is damaged, need to
replace the font chips. 2.If without any contents for both
normal print and self-test. Please replace head and try
again. Or contact with service center for help.
15: Reset the printer to factory default setting.
A: Please use the printer tools to reset. “Printer tool -
s”-”Factory Reset”.