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 Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the printer is using a third‑party cartridge, then refer the users to their cartridge supplier. Is the printer using a genuine and supported toner cartridge?	Go to step 3.	Go to step 2.
Step 2 Install a genuine and supported toner cartridge. Does the problem remain?	Go to step 3.	The problem is solved.
Step 3 a Turn off the printer, wait for 10 seconds, and then turn on the printer. b Reduce the toner darkness. From the control panel, navigate to: Settings > Print Settings > Quality menu Note: 8 is the factory default setting. Does the problem remain?	Go to step 4.	The problem is solved.
Step 4 From the control panel, set the paper type, texture, and weight in the Paper menu to match the paper loaded. Does the problem remain?	Go to step 5.	The problem is solved.
Step 5 Depending on the operating system, specify the paper type, texture, and weight from Printing Preferences or Print dialog. Does the problem remain?	Go to step 6.	The problem is solved.
Step 6 a Check if the paper loaded has texture or rough finishes. b From the control panel, set the paper texture in the Paper menu to match the texture of the paper loaded. Does the problem remain?	Go to step 7.	The problem is solved.
Step 7 Make sure that the paper loaded is from a fresh package. Note: Paper absorbs moisture due to high humidity. Store paper in its original wrapper until you use it. Does the problem remain?	Go to step 8.	The problem is solved.
Step 8 Replace the imaging unit. Does the problem remain?	Go to step 9.	The problem is solved.
Step 9 a Remove the right cover. b Check all the connections on the HVPS for proper connection. Is the HVPS properly connected?	Contact the next level of support.	Go to step 10.
Step 10 Replace the connections. Does the problem remain?	Go to step 11.	The problem is solved.
Step 11 Replace the HVPS. Does the problem remain?	Contact the next level of support.	The problem is solved.