Canon D680 - Manual (Page 65)

6-8
❚ If the documents have black streaks or appear dirty after you feed them in the ADF.
The ADF roller is dirty.
• Clean the ADF roller. (
→ p. 5-3)
• For additional troubleshooting,
→ Print Quality Problems.
❚ The print quality is not what you expect; print is not clear, has missing dots or white
streaks.
The size, thickness and type of the paper you are using are not within the specifications of the machine.
• Check that the paper you are using is supported by the specifications of the machine. (
→ p. 2-1)
The cartridge may not be installed properly.
• Make sure the cartridge is installed properly. (
→ Set-up Instructions)
The toner in the cartridge may be low.
• Refer to “When to Replace the Cartridge” (
→ p. 5-4) and replace if necessary. (→ p. 5-7)
The copy exposure may not be adjusted correctly.
• Adjust exposure correctly. (
→ p. 4-6)
❚ Copies are dirty.
The platen glass or rear side of the ADF may be dirty.
• Clean the platen glass or rear side of the ADF. (
→ p. 5-1)
The rollers inside the machine are dirty.
• Clean the rollers. (
→ p. 5-2)
There may be a scratch on the cartridge.
• Replace the cartridge with a new one.
Condensation has built up inside the machine.
• Allow at least two hours for the machine to adjust to room temperature before attempting to use it.
The machine may be installed in a location where the floor or foundation is unstable.
• Install the machine in a proper location. (
→ p. 1-1)
❚ Black lines on the copy
The read area of the platen glass is dirty.
• Clean the read area of the platen glass. (
→ p. 5-2)
❚ Copies are too dark or too light.
The copy exposure may not be adjusted correctly.
• Adjust the copy exposure correctly in the PRINT EXPOSURE of the COMMON SETTINGS of the Additional
Functions. (
→ p. 7-2)
TONER SAVER MODE may be set to ON in the COMMON SETTINGS of the Additional Functions.
• Set TONER SAVER MODE to OFF. (
→ p. 7-2)
Print Quality Problems
NOTE