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tsbservice
07-16-2019, 08:45 AM
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

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