ricoh mp2851 light copies

[barrylee66]

mp 2851 has nice dark prints but light copies. cleaned all optics. looking for adjustment for copies that is permanent.

[copyaction]

Re: ricoh mp2851 light copies

these tend to do this when the drum is worn out.
also if it is only on one side the scanner may be bent down. try lifting up on the the left side of the op panel if that is the case.

[dusan]

Re: ricoh mp2851 light copies

I would try to clean CCD camera, lens in optics and also the laser unit.

[Athlontini]

Re: ricoh mp2851 light copies

If the transfer roller is old, replace that too. Part# B2093831.

[copier tech]

Re: ricoh mp2851 light copies

& just to add even as prints are good a dirty last glass will cause faint copies (pull the lass out to clean 1 screw & toner cover)

[vga_man]

Re: ricoh mp2851 light copies

Replace developer powder then enter developer lot no.

[Iowatech]

Re: ricoh mp2851 light copies

mp 2851 has nice dark prints but light copies. cleaned all optics. looking for adjustment for copies that is permanent.

Is the white reference strip in the optics cavity discolored? On older machines they do tend to get less white, which will cause the machine to make light copies.
If that machine has manual gamma adjustments in the scanner section of service mode, they might help. But you need to be really careful with them, because if you goof up wrong and stupid things will happen.

[Counsel]

Re: ricoh mp2851 light copies

I would start with the basics what is the pm count on the pcu and transfer roller if you are over or at PM time I would do that first and see if your issue resolves. If your PM was recent make sure the transfer roller was also done sometime in the last 150k pages. Clean the slit glass that slides out under the toner hopper, and clean the optic mirriors. That pretty much cures most problems with these.

[copyaction]

Re: ricoh mp2851 light copies

going to replace the pcu in one this morning with the same problem.
I will let you know the outcome.

[Elmo]

Re: ricoh mp2851 light copies

When replacing drum always use original drums

[copyaction]

Re: ricoh mp2851 light copies

Replaced today with type 1027 pcu and no more light copies.