Lexmark 7464-036 MX721ade

Note: Before performing this print quality check, go to the control panel home screen and navigate to Settings > Troubleshooting > Print Quality Test Pages, and then perform the initial print quality check.

Actions	Yes	No
Step 1 Remove, and then clean the imaging unit contacts. Does the problem remain?	Go to step 2.	The problem is solved.
Step 2 Check if the printer is using a genuine and supported Lexmark imaging unit. Is the printer using a genuine and supported imaging unit?	Go to step 4.	Go to step 3.
Step 3 Install a genuine and supported imaging unit. Does the problem remain?	Go to step 4.	The problem is solved.
Step 4 Turn off the printer, wait for 10 seconds, and then turn on the printer. Does the problem remain?	Go to step 5.	The problem is solved.
Step 5 a Remove the HVPS. b Check if the HVPS wire connectors are pinched or damaged. Are the wire connectors pinched or damaged?	Go to step 6.	Go to step 7.
Step 6 Repair or replace the wire connectors. Does the problem remain?	Go to step 7.	The problem is solved.
Step 7 a Remove the right cover. b Check connection J15 from the controller board to the HVPS, and then check all other connections on the HVPS. Are the connections properly connected?	Go to step 9.	Go to step 8.
Step 8 Replace the connections. Does the problem remain?	Go to step 9.	The problem is solved.
Step 9 Replace the HVPS. Does the problem remain?	Contact the next level of support.	The problem is solved.