❚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.

NOTE

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)

6-8

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Canon D680, D661 manual Print Quality Problems, Copies are dirty
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D661, D680 specifications

Canon D680 and D661 are two standout models in Canon’s lineup of printers, designed to meet the needs of both home users and small office environments. These multifunctional devices combine high-quality printing, scanning, and copying capabilities, making them great all-in-one solutions.

One of the key features of the Canon D680 and D661 is their impressive printing speed. Both models are engineered to deliver fast printouts, allowing users to produce documents efficiently. Whether printing in black and white or color, these printers maintain a high level of performance, making them suitable for users who frequently require printed materials.

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Overall, the Canon D680 and D661 deliver a compelling combination of speed, quality, connectivity, and user-friendly features, making them excellent choices for anyone in need of a reliable and versatile printing solution. Whether for personal use, business documents, or creative projects, these printers provide exceptional performance to meet a variety of needs.
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