Heya Everyone,
I've got a 311C which is having a few issues. It is an ex-rental machine (128k on the clock - regularly serviced). It still has a few problems that I just can't shake but I'm hoping someone on here can point me in the right direction.
Backgrounding:
When I got the machine it had a cyan backgrounding issue - appeared strong on leading edge stronger at the top which faded to a light backgrounding away from the leading edge.
After a complete overhaul of the EPU (numerous overhauls actually) the problem moved to yellow. It seemed to be associated with the endblock as shifting the drum, blade, charge unit didn't shift the problem.
Since then I have been unable to shift the y backgrounding despite changing the dums, blades, main charge units and even the end block with a spare end block and its still there.
Ohh just to be extra annoying in the last set of prints a black ground appeared faintly on the leading edge
After each EPU clean I ran the Forced Image Quality, Image registration, Gamma tests.
So anyone know a way to test from here. It is possible when it was owned by Toshiba a tech has adjusted the machine settings which could cause this problem.
At the moment I am noticing a very high level of toner adding which is usually Y so I'm wondering if the auto-toner sensor is malfunctioning and adding way too much toner - not that the backgrounding should be associated with too much toner.
All the dev in the machine seems good (Solid colours) - after the clean the gradients are coming up well.
The backgrounding has seemed to vary on number of copies with the first copy often having less background and the further copies having more.
The problem seems to be Voltage/Charge but with different Marin Charger units, cleaned terminals (EPU and main 311 body) I'm stumpted.
I've got a 311C which is having a few issues. It is an ex-rental machine (128k on the clock - regularly serviced). It still has a few problems that I just can't shake but I'm hoping someone on here can point me in the right direction.
Backgrounding:
When I got the machine it had a cyan backgrounding issue - appeared strong on leading edge stronger at the top which faded to a light backgrounding away from the leading edge.
After a complete overhaul of the EPU (numerous overhauls actually) the problem moved to yellow. It seemed to be associated with the endblock as shifting the drum, blade, charge unit didn't shift the problem.
Since then I have been unable to shift the y backgrounding despite changing the dums, blades, main charge units and even the end block with a spare end block and its still there.
Ohh just to be extra annoying in the last set of prints a black ground appeared faintly on the leading edge

After each EPU clean I ran the Forced Image Quality, Image registration, Gamma tests.
So anyone know a way to test from here. It is possible when it was owned by Toshiba a tech has adjusted the machine settings which could cause this problem.
At the moment I am noticing a very high level of toner adding which is usually Y so I'm wondering if the auto-toner sensor is malfunctioning and adding way too much toner - not that the backgrounding should be associated with too much toner.
All the dev in the machine seems good (Solid colours) - after the clean the gradients are coming up well.
The backgrounding has seemed to vary on number of copies with the first copy often having less background and the further copies having more.
The problem seems to be Voltage/Charge but with different Marin Charger units, cleaned terminals (EPU and main 311 body) I'm stumpted.
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