Yellow Problem Witch MPC305SPF

[printertnc]

20170701142833944.pdf

[slimslob]

Re: Yellow Problem Witch MPC305SPF

Assuming that the paper is fed Short Edge First, SEF, I can see three possible causes.

1. The yellow developer has migrated away from one end of the development roller
2. The yellow laser shield glass is dirty
3. The yellow transfer roller is not making full contact at one end

Supponendo che la carta viene alimentata breve bordo prima, SEF, posso vedere tre possibili cause.

[aktasson]

Re: Yellow Problem Witch MPC305SPF

Did you after the replace reset the pm counter for the yellow pcdu and pull the yellow toner out and back again?
I would look to the toner supply (hopper) and check the sponge.
Also check and compare Vt SP3210 001-004 and and Vref SP230 001-004.
2017-07-01 17_30_38-Microsoft Word - RD117051b - RD117051b.pdf.jpg

[aktasson]

Re: Yellow Problem Witch MPC305SPF

This RTB just for your information but does not quite concern your problem.
My read is that the yellow toner supply to the Development unit is blocked/reduced. Either it is the spong or the shutter of the hopper unit (toner hopper coil twists/breaks). I had to change one in the past. You almost have to take the whole unit apart. It is better then to bring the mpc into the workshop.

[Cipher]

Re: Yellow Problem Witch MPC305SPF

Agoaktasson is correct.

The toner supply coils are made from cheap flexible plastic and can stretch and knot in the duct reducing the toner supply.

It's as much fun as a swift kick in the ball bags getting the toner supply hopper and sub-hoppers out onsite.
Give yourself plenty of time and room, your need it.

[copier tech]

Re: Yellow Problem Witch MPC305SPF

Yes the toner hoppers were modified yellow has a known issue.

There was also a firmware released to fix this issue.