This machine has over million prints, all consumables are changed as per service recommendations. There is magnetic brush on K dev unit.
Blank copies/prints are ONLY in black mode. I mean only K is missing. Read about HVT failure when ALL 4 colors are missing.
I'm going to open PWB box to see if the Developing solenoid (SD4) is stuck(machine is in dirty environment) and K developer unit drive. Next maybe PH unit but I doubt about it gone bad.
Any other ideas Ladies and Gents?
TIA
Blank copies/prints are ONLY in black mode. I mean only K is missing. Read about HVT failure when ALL 4 colors are missing.
I'm going to open PWB box to see if the Developing solenoid (SD4) is stuck(machine is in dirty environment) and K developer unit drive. Next maybe PH unit but I doubt about it gone bad.
Any other ideas Ladies and Gents?
TIA