Lexmark 7421-036 MX910de

Troubleshooting. Print quality. Toner specks check

Actions	Yes	No
Step 1 a Make sure that the photoconductor and printhead are clean. b Make sure that the photoconductor and printhead are properly installed. c Check the photoconductor for damage, and replace if necessary. Does the problem remain?	Go to step 2.	The problem is solved.
Step 2 a Make sure that the cartridge and photoconductor are installed. b Make sure that the cartridge and photoconductor are supported. Does the problem remain?	Go to step 3.	The problem is solved.
Step 3 Enter the Diagnostics menu, and then navigate to: PRINTER SETUP > Printed Page Count Does the page count reach 300K or 600K?	Go to step 4.	Go to step 5.
Step 4 Check the following for damage: • Developer unit • Transfer belt • Transfer roller Replace the parts if necessary. Does the problem remain?	Go to step 5.	The problem is solved.
Step 5 a Make sure that the fuser and its cable are properly connected. b Check the fuser for damage, and replace if necessary Does the problem remain?	Contact the next level of support.	The problem is solved.