Aficio MP C2500 Printout faint in the middle.

[Guest]

MP C2500 prints copies faint or clear/blank in the middle when print black and white copies in the morning the improves with more copies printing but becoming a daily routine. All other 3colours print well. When in SP3-012-1 mode, I get 11111158/59 then 11111111 after executing SP2-111-3 and SP2-111-1 for forced line position adjustment and perform ACC.

I have changed the complete PCU, swapped the transfer roller and transfer belt unit and the problem was not solved.

Any ideas I would really appreciate.

[E Winter]

After all the part's you've already replaced it's hard to guess what's causing the problem.

Is the firmware up to date? There was a problem with the laser shutter in the very beggining but I think the image failure was a light density towards the border.

What you should try first:

Initiate a full size black copy (cover open) and stop the machine during that process. Then take a look at the black drum and transfer belt to see if it's fully coated with toner (or not) - that would be at least a first step to encircle the issue.

[Eric1968]

Could it be moisture in the machine? Moisture on the laser shielding glass?

I had this with a very cold MPC2500. When I switched it on the image was faint in the middle. When the machine warmed up the image was OK.

[E Winter]

Could it be moisture in the machine? Moisture on the laser shielding glass?

I had this with a very cold MPC2500. When I switched it on the image was faint in the middle. When the machine warmed up the image was OK.

good point!

[aabarnes1]

I'd be looking at the ID sensors, particularly the MUSIC ones, anyway all 7 are on the one unit, but worth a look

[netwitza]

Mp c2500 Ld unit.

I changed the complete Ld unit and problem is solved. Many thanks.