Sindoh M403 - Manual (Page 212)

Maintenance and Troubleshooting
5-
40
Image Quality Problem
If you can solve problems with below steps, contact the authorized dealer.
Problem Cause Solution
Cannot print anything. Check if the document is
loaded with its correct side
facing the right direction. Load the document with its
correct side facing the right
direction.
Several pages are fed at the
same time. Shake the document so that
pages are not attached to
each other.
The toner is low. Change the toner cartridge.
The device has a problem. Contact the authorized
dealer.
Black dots are printed. Paper is wet. Change the new paper.
Improper paper is used. Use proper paper.
The flatbed is dirty. Clean up the flatbed.
Paper becomes wrinkled or
texts are not clear. Improper paper is used. Use proper paper.
Paper is wet. Change the new paper.
Black dots are printed in the
feeding direction. The flatbed is dirty. Clean up the flatbed.
Overall output is dirty. The flatbed is dirty.
The opposite side of the
document is printed. Clean up the flatbed. If the
original document is thin,
increase [Brightness] and
[Background Remove]
settings.
Output print is blur and
unclear. Paper is wet. Change the new paper.
Check if the document is
yellow or green. Send the black document.
Copying is recommended.
Improper paper is used. Use proper paper described
in this manual.
The contrast setting is wrong. Set the correct contrast
setting.