EC-520 User’s Manual
Chapter 6 Printer’s maintenance
6.1 Clean the Printer
It’s necessary to clean the printer periodically.
Carriage shaft
Carriage module
Figure 6-1
Interval and Material for cleaning
Interval: Every 6 months or 300 hours of working time.
Material: Dry cloth
（
soft cloth for metal parts
）
.
Cleaning the paper feed pathway and the area under the moving path of carriage
Wipe soiled parts of the printer with clean cloth. Remove bits of paper by tweezers.
Cleaning Carriage Shaft
The carriage shaft is coated with oil, which is easy to absorb dust. Please wipe the dust with soft
cloth.
Note: 1. When the printer is used in dusty environment, the carriage shaft may easily absorb
dust, which will affect the normal printing.
2. Turn off the printer before cleaning.
3. Print head becomes very hot during printing, allow it cool before you clean the printer,
4. Don't use hard cloth or flammable solvent to clean the printer.
6.2 Problems and Solutions
（
1
）
Turn on the printer, all LEDs are off, and printer have no action
Make sure that the printer is connected to the power, and check whether the power cable and
electrical outlet are working normally.
（
2
）
Self-test is ok, but online is disabled.
①
Please make sure that the printer is connected with the computer correctly and the paper is
loaded well.
②
If it can't print with online function all the time, please replace the interface cable with a new one.
（
3
）
Paper out
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