Troubleshooting

The information in the following table may help you solve print quality problems. If these suggestions still do not correct the problem, call for service. You may have a printer part that requires adjustment or replacement.

Symptom

 

Cause

Solution

Repeating defects

 

Either the print cartridges are

Marks occur repeatedly only in one color and

 

 

 

 

 

defective, the image transfer unit

multiple times on a page:

 

 

 

 

 

and transfer roller are defective, or

• Replace the cartridge if the defects occur every:

 

 

 

 

 

the fuser is defective.

 

 

 

 

 

– 48 mm (1.9 in.)

 

 

 

 

 

 

 

 

 

 

 

 

– 97 mm (3.8 in.)

 

 

 

 

 

 

 

 

 

 

 

 

 

Marks occur down the page repeatedly in all

 

 

 

 

 

 

colors:

 

 

 

 

 

 

• Replace the transfer roll if the defects occur every

 

 

 

 

 

 

60 mm (2.4 in.)

 

 

 

 

 

 

• Check the first transfer bellcranks and springs or

 

 

 

 

 

 

replace the image transfer unit if the defects occur

 

 

 

 

 

 

every 101 mm (4 in.)

 

 

 

 

 

 

• Replace the fuser if the defects occur every

 

 

 

 

 

 

 

 

 

 

 

 

148 mm (5.8 in.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Marks occur on every third or sixth page in any

 

 

 

 

 

 

color:

 

 

 

 

 

 

Replace the image transfer unit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Color misregistration

Color has shifted outside of the

Top to Bottom or Left to Right:

 

appropriate area or has been

1

Re-seat the cartridges by removing them from the

 

superimposed over another color

 

 

printer and then reinserting them.

 

area.

 

 

2

Adjust the Color Alignment under the Utilities

 

 

ABCDE

 

 

Menu.

 

 

 

ABCDE

 

 

 

White or colored line

Either the print cartridges are

1

Replace the color print cartridge causing the line.

 

defective, the image transfer unit

2

If you still have the problem, replace the image

 

and transfer roller are defective, or

 

 

transfer unit and transfer roller.

 

the fuser is defective.

 

ABCDE

3

If you still have the problem, replace the fuser.

 

 

 

 

ABCDE

 

 

 

ABCDE

 

 

 

Solving print quality problems

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Lexmark C770 Marks occur repeatedly only in one color, Multiple times on a, Marks occur down the page repeatedly in all
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C772, C770 specifications

The Lexmark C770 and C772 series of printers are robust color laser printers designed for medium to large workgroups that demand high-quality printing along with impressive speed and efficiency. These models stand out due to their impressive set of features and advanced technologies, catering to a range of business printing needs.

One of the hallmarks of the Lexmark C770 and C772 is their print quality. With a resolution of up to 1200 x 1200 dpi, these printers deliver sharp text and vibrant color graphics, making them ideal for producing professional-looking documents, presentations, and marketing materials. Additionally, the printers utilize Lexmark's unique Unison toner technology, which ensures consistent, high-quality printing throughout the life of the cartridge, reducing the need for frequent replacements and maximizing productivity.

Speed is another significant advantage of the C770 and C772 series. Both models are capable of printing at impressive speeds of up to 35 pages per minute for black and white prints and slightly lower for color documents. This rapid output allows businesses to meet tight deadlines without compromising on quality. Furthermore, the first-page-out time is notably fast, ensuring that users do not waste time waiting for their documents.

Connectivity options are extensive with the C770 and C772. These printers support USB, Ethernet, and optional wireless connections, enabling seamless integration into various network environments. This flexibility allows multiple users and devices to access the printer, facilitating collaboration and streamlining workflows.

Additionally, user-friendly features such as a large, intuitive LCD screen and an easy-to-navigate interface simplify printer management and operation. The printers also support advanced finishing options, including duplex printing, which saves paper and reduces costs, making them environmentally friendly choices for businesses.

Moreover, security features are incorporated to protect sensitive data, with options for secure printing and data encryption. This makes these printers suitable for environments where confidentiality is crucial.

In summary, the Lexmark C770 and C772 series are powerful color laser printers that combine exceptional print quality, impressive speed, versatile connectivity, and advanced features, making them a worthy investment for businesses looking to enhance their printing capabilities.
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