Sharp Mx2310 Printer calibration

[chris1973]

We made the printer calibration on Sharp Mx2310.
It is not ok, it show littel white lines ( like missing shadows)
Chenged toners , drums , tranfer blet , fuser unit.
I attached the printer calibration to see the defect
Thanks for who will help me
Chris

[Prints Charming]

That problem could quite easily be isolated to one of the following: Noise on Black Drum Motor or Faulty LSU Diodes.
The CMY drum Motor is the same part as the Black drum motor. Swap these around and compare results. May need both drum motors replaced. Check the dev units are rotating smoothly without excess load or noise.
The LSU has had 4 part updates since first production, and the LSU Mother PWB has had a few as well. Reinstall the LSU and Mother PWB into place to correct any possible loose connections. You may need new LSU or Mother PWB.
Also, check the firmware is up to date. An early version 7 update had some corrections for laser power and fine line reproduction.

[chris1973]

That problem could quite easily be isolated to one of the following: Noise on Black Drum Motor or Faulty LSU Diodes.
The CMY drum Motor is the same part as the Black drum motor. Swap these around and compare results. May need both drum motors replaced. Check the dev units are rotating smoothly without excess load or noise.
The LSU has had 4 part updates since first production, and the LSU Mother PWB has had a few as well. Reinstall the LSU and Mother PWB into place to correct any possible loose connections. You may need new LSU or Mother PWB.
Also, check the firmware is up to date. An early version 7 update had some corrections for laser power and fine line reproduction.

Thanks !!! there isn't any noise we will try by the firmware update

[jp74msj55]

We made the printer calibration on Sharp Mx2310.
It is not ok, it show littel white lines ( like missing shadows)
Chenged toners , drums , tranfer blet , fuser unit.
I attached the printer calibration to see the defect
Thanks for who will help me
Chris

Try running Sim 64-4 and change first setting to 3.
It will print out individual colors.
May narrow it down for you.