Sindoh A611dn - Manual (Page 121)

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Troubleshooting
5
Problem 5: When pie charts, bar graphs or other gray graphics are printed, vertical lines of various widths
appear.
Solution: 1) Contaminants such as paper powder or lint are on the head lens. Clean the head lens.
2) The toner cartridge may be defective. Replace with a new one.
3) The drum cartridge may be defective. Replace with a new one.
Problem 6: White or black lines are printed on the tracing paper (OHP)
or paper.
Solution: 1) The toner may be running out.
To use the remaining toner, remove the cartridge and
gently shake before reinstalling.
2) The toner cartridge may be defective.
Replace with a new one.
3) The drum cartridge may be defective.
Replace with a new one.
Problem 7: Pale images or repeated spots are printed on paper.
Solution: 1) The toner cartridge may be defective.
Replace with a new one.
2) The drum cartridge may be defective.
Replace with a new one.
Problem 8: The text outline is not clear and image quality is poor.
Solution: Change printer resolution in Printer Driver.