19
© 2022 Unitech Electronics Co., Ltd. All rights reserved.
Unitech is a registered trademark of Unitech Electronics Co., Ltd.
All product and company names are trademarks, service marks, or registered trademarks of their respective owners
SP320
User’s Manual
3.3 Troubleshooting
Fault Phenomenon Cause
Solution
Refer to page
Paper is fed but no
data is printed.
Printing paper is loaded in
the wrong direction.
Please load the printing paper
in the other direction.
7
Blurry printing
The printer is not cleaned
for a long time and the
printer mechanism
is contaminated by dirt.
Clean the printer mechanism.
17
Poor color rendering of
printing paper
Please set higher blackness
or use paper with better color
rendering.
─
Printed documents
are blurred in
months or even
weeks
Poor quality of printing
paper
Please use long-lasting
thermal printing paper.
18
Documents are kept at
high ambient temperature
Please keep the documents
at room temperature.
(about 20°C)
18
