Color ImageClass MF644Cdw purchased Nov 29, 2019
About 1200 Pages printed/copied.
Toner Status C 70; M 70; Y 70; K 100
Remote UI shows "no errors"
Printing is faint with all Toners
I have tried adjusting toner density on all toners as high as plus 3 on all toners with no effect.
I have tried Adjusting Image Quality > Adjusting Gradation > Full Adjust. This process goes as far as step 5 in manual, then when "start" is selected the printer is active for a while before "Could not Perform Corrections" message is displayed and no adjustment image is printed.
Then I tried "Cleaning Fixing Assembly" and the ejected page is blank instead of having the "pattern" expected.
Then I tried "Cleaning ITB" process which completed without an error message.
Repeated Adjusting Image Quality > Adjusting Gradation > Full Adjust. Same result as earlier.
If anyone else has had this issue with the MF600 series and found a solution please advise!!