User's Manual
![](/manual/samsung-electronics/clp680dw/4-3-2-1-user-s-manual-english/images/img-68.png)
Printing quality problems
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6. Troubleshooting
Wrinkles or creases • Ensure that the paper is loaded properly.
• Check the paper type and quality.
• Turn the stack of paper over in the tray. Also try rotating the paper 180° in the tray.
Back of printouts are dirty • Check for leaking toner. Clean the inside of the machine (see "Cleaning the machine" on page 75).
Solid color or black pages • The toner cartridge may not be installed properly. Remove the cartridge and reinsert it.
• The toner cartridge may be defective. Remove the toner cartridge and install a new one (see "Replacing the toner cartridge" on
page 64).
• The machine may require repairing. Contact a service representative.
Condition Suggested solutions
A