[CQ] PRO 906EX FAINT COPIES

[katash]

Hi Guys!!

problem with the pro 906 has constant faint copies and has done only 700k but i have replaced the PM parts and serviced the toner bank system and calibration done to no avail.

apparently I'm not getting any service codes what astonishes is that the toner hopper unit has toner and when added by SP2207 works for sometime.

any ideas will be greatly appreciated.

[Polarbear]

Re: PRO 906EX FAINT COPIES

Have you checked your vsp/vsg values to see what the machine is doing?

[katash]

Re: PRO 906EX FAINT COPIES

Have you checked your vsp/vsg values to see what the machine is doing?

polar,
it varies when faint but when you set the CQ to be OK and perform TD sensor and ID its a go

[watson]

Re: PRO 906EX FAINT COPIES

Have you tried replacing the TD sensor?

[gasior78]

Re: PRO 906EX FAINT COPIES

Had the same probem with a pair of 1357EX machines (Europe) doing the same thing, especially at a very long runs (same customer). Seems like Vref gradually goes up as a developer gets worn out, even when it did not reached its life (500k). After a certain Vref value the machine struggles to maintain the original 2,50V and pauses printing for much longer period to do a process control procedure. F/W error? I don't know. However it gets better after a manual forced 2-962 execution, not for long though. Anyway, in my case the only permanent solution was (is) changing the developer. This usually starts to happen at around 400k after the last PM.

It used to be so much better in previous non-PRO models... Those were the days! /Kris

[JustManuals]

Re: PRO 906EX FAINT COPIES

This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


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Paul@justmanuals.com

[katash]

Re: PRO 906EX FAINT COPIES

Have you tried replacing the TD sensor?

not yet but the developer is new,will try replacing though when you set the TD sensor the parameters seems to be OK i think I'll go a step further and replace the id sensor

thanks guys for your valuable contribution.