Aficio CL 4000dn Color streaking

[stevee104]

Have attached some samples of the issue, change transfer belt but didn't solve problem. Thought because it was
not cleaning and putting the color lines that was transfer belt and not the drum units. Am i going to have
to change all three imaging units or is there a fix for it clean the laser slit glass also.
Total count is 48519 23887/24832. Didn't know if drums had pcr charge rollers that could be clean.
Lines are running length of page.

[LNorris]

Re: Aficio CL 4000dn Color streaking

is there a transfer cleaning unit on that?

[stevee104]

Re: Aficio CL 4000dn Color streaking

is there a transfer cleaning unit on that?

No it's on the transfer belt itself

[slimslob]

Re: Aficio CL 4000dn Color streaking

Looks like a dirty charge roller on the cyan drum unit. Might be caused by an excessively worn lube bar. Best solution is to replace PCU.

[stevee104]

Re: Aficio CL 4000dn Color streaking

Looks like a dirty charge roller on the cyan drum unit. Might be caused by an excessively worn lube bar. Best solution is to replace PCU.

Also has yellow and magenta on the prints so are we looking at all 3 pcu , never seen all 3 quit at the same time.

[slimslob]

Re: Aficio CL 4000dn Color streaking

Also has yellow and magenta on the prints so are we looking at all 3 pcu , never seen all 3 quit at the same time.

For most customer serviceable color printers, Ricoh sells a maintenance kit that includes 3 color PCUs. Projected yield is 50K. If you are less than 80% of yield, you can try cleaning charge rollers though you are experienced at cleaning charge rollers, you could make matters worse.

[stevee104]

Re: Aficio CL 4000dn Color streaking

For most customer serviceable color printers, Ricoh sells a maintenance kit that includes 3 color PCUs. Projected yield is 50K. If you are less than 80% of yield, you can try cleaning charge rollers though you are experienced at cleaning charge rollers, you could make matters worse.

How hard is it to get to the charge roller on these units, i do not have service manual on this machine.

[TonerMunkeh]

Re: Aficio CL 4000dn Color streaking

The drums split apart quite easily but just save yourself the hassle and fit a set of PCDU's.

[stevee104]

Re: Aficio CL 4000dn Color streaking

OK finally got pcu units in yesterday and installed them.,when i cut machine back on
it threw a sc325 which is a color motor lock so first one i tied was the magenta and the new one was the
problem. So with the old one in the machine it went into calibration and to ready state, so i cut the machine off got the new
magenta unlocked, reinstalled it but it did not re calibrate and now it throws a sc361 after a few copies,
is there any way to get this to reset the toner sensor in the service mode or the unit toast.