Mp 3555 solid prints/light copies

[Polo-022]

MP 3555SP PRINT & SCAN.PDFAfter a full PM and 12K. printed pages, i have very light copies but normal prints. Optics are clean, machine also, original parts, PM procedure like service manual says. Pro Con. execution O.K. I think i cannot check ID sensor or TD sensor somehow. SP 3072 or SP 3074 gives "Failed". Any help please?

[Miri]

you have to clean all the mirror well , lser mirror too

[Popolopo]

I guess you didnt clean optic properly. There are glass at bottom, usually people miss that one

[copier tech]

If the prints are good & both scans AND copies are faint, the optics are all clean try updating the firmware.

[Polo-022]

I guess you didnt clean optic properly. There are glass at bottom, usually people miss that one

It has an Optical Reading Unit, not only a mirrors arragement, so it is a high risk to clean it, it must be dismantled to do so. Besides, it works in a very clean environment. Using a flashlight i can see it clean. Thanks a lot anyway, and i will double check it!!

[Popolopo]

It has an Optical Reading Unit, not only a mirrors arragement, so it is a high risk to clean it, it must be dismantled to do so. Besides, it works in a very clean environment. Using a flashlight i can see it clean. Thanks a lot anyway, and i will double check it!!

No need to dismantle it fully. You can clean the bottom glass just by tilt abit ccd. Beside, it quite easy to clean, just careful that you wont unplug ffc there.

[tonerhead]

Question. Have you made sure the white plates are clean in the scanner and adf? Is there a density difference between the adf and platen copies? I would try SP 4646-1,2 for the white and black levels. If that corrects your image from platen, then test adf image. SP 4680 adjusts adf image density to match that of platen glass.

[slimslob]

It has an Optical Reading Unit, not only a mirrors arragement, so it is a high risk to clean it, it must be dismantled to do so. Besides, it works in a very clean environment. Using a flashlight i can see it clean. Thanks a lot anyway, and i will double check it!!

The procedure for cleaning the scanner cartridge mirror is covered in the Replacement and Adjustment section of the service manual. And while you have the platen glass off to clean the mirrors. clean the bottom side of the glass

[dalewb74]

The procedure for cleaning the scanner cartridge mirror is covered in the Replacement and Adjustment section of the service manual. And while you have the platen glass off to clean the mirrors. clean the bottom side of the glass

yeah, that's what I like about ricohs and kyocera, fairly easy access to clean the mirrors. lexmark is a whole different story. oh lexmark says its factory sealed and can't get dust on the optics. just who exactly are you trying to lie to there lexmark?

[tonerhead]

The procedure for cleaning the scanner cartridge mirror is covered in the Replacement and Adjustment section of the service manual. And while you have the platen glass off to clean the mirrors. clean the bottom side of the glass

Thanks Slim, I never knew this procedure existed. I've always done it with an optical brush through the opening in the scanner assy. I rarely have to clean these out much, but next time I'll know.

[Polo-022]

If the prints are good & both scans AND copies are faint, the optics are all clean try updating the firmware.

Firmware is up to date. I didn't think about scan only to see the scanned image!! Thanks!

[Polo-022]

The procedure for cleaning the scanner cartridge mirror is covered in the Replacement and Adjustment section of the service manual. And while you have the platen glass off to clean the mirrors. clean the bottom side of the glass

I have already read the procedure in Service Manual. I am so afraid of those FFC ribbons...!!

[copier tech]

Firmware is up to date. I didn't think about scan only to see the scanned image!! Thanks!

Yes, if the scans come through fine then you may have an issue with the PCDU.