08-13-2019 04:58 PM
Very frustrating - colored dots printing down the page on every printout. laserjet cp1025nw Genuine hp ink and drum. cleaned the contacts with electronics cleaner. it is not a print quality issue - these are being put there by the printer. if printing in b/w then only black dots. full color then all clolors. There is nothing on the drum or toner cartridges. did a firmware upgrade and hard reset and same issue.
08-13-2019 06:36 PM
Check the secondary transfer roller for toner pollution. Can you post a sample?