View Full Version : CQ C6501 Cyan Drum Keeps failing at 80% range...
methogod
05-26-2017, 05:28 PM
second PM Cycle where the Cyan drum fails early... Machine has 5M on it, but has a ton of replaced parts....
Any suggestions, I am not sure where to start....
I normally can let the DU-104s go till 120% PLUS before quality issues start....
thanks,
methogod
05-27-2017, 07:18 PM
Images for reference....
Just don't understand why the cyan fails at 1/2 its rated life...
3670736708
mircea
05-31-2017, 11:26 AM
Images for reference....
Just don't understand why the cyan fails at 1/2 its rated life...
3670736708
are you sure there is no dust under the developer unit's doctor blade?
also how i solved a problem with magenta drum that kept on failing long before 80% was by replacing hv detecting sensor and there were few leds not working right so i just replace all process unit. 2m prints later and still working fine.
methogod
05-31-2017, 04:40 PM
Dust would make lines the other direction...
100% FAILED DRUM, just replaced and back to 100%.... failed at 82% last one failed at 85% or so.... Used to go to 150 without issue...
Watching it like a hawk now...
How do i test HV assembly? How do i test LEDs?
Is there a test pattern?
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