color registration off ( yellow)

[Otis252]

I have a Canon c9075 advance yellow reg is off. Cleaned, ran init-itb, quick adjust. No help. Any suggestions?

[canon33]

Some models have a registration clear that fixes this sometimes. Not sure of this model. Make sure patch sensors are clean and a good patch is being laid on belt.

[Herrmann]

Each color laser unit has a tilt correction lens and a tilt correction motor, maybe the one in the yellow unit is stuck. Try COPIER>FUNCTION>LASER>LD-ADJ-Y/M/C to set them in the initial position. Look at the alarm codes, if there is a 34-0004, the cout value of skew correction motor exceeds specific.
To hunt the error down, you can interchange yellow and cyan laser and see, if the error goes to cyan.

[Otis252]

Thanks guys with your help. We'll try that Hermann. I did order every thing to rebuild the ITB assy.