Lexmark c750 用户指南

You can solve many print quality problems by replacing a supply or maintenance item that has 
reached the end of its intended life. Check the operator panel for a message about a printer 
consumable. See 

for information about other ways to identify 

consumables that need to be replaced.

Use the following table to find solutions to print quality problems.

• The print cartridges are 

defective or empty.

• The transfer roller is 

defective.

• The image transfer unit is 

defective.

• Replace the print cartridges. See 

.

• Replace the transfer roller. See 

.

• Replace the image transfer unit. See 

• The print cartridges are 

defective.

• Your printer requires 

servicing.

• Replace the print cartridges. See 

.

• Call for service.