Calibration error Color Plane Registration

[awbucher]

We have on a M775 alot of Problem:

54.0D.03 2307781_551206 Calibration Error ErrorDiffusion 0 4 1/6/2017 10:28:21 AM 379646

54.0C.03 2307781_551206 Calibration error consecutive DmaxDhalf 0 3 1/6/2017 10:19:27 AM 379643

54.0D.03 2307781_551206 Calibration Error ErrorDiffusion 0 2 1/6/2017 10:18:54 AM 379643 54.0C.03 2307781_551206 Calibration error consecutive DmaxDhalf 0 1 1/6/2017 10:18:05 AM 379643 54.14.00 2307781_551206 Calibration error Color Plane Registration

 We have replaced the ITB,  Fuser and Transferroller

The copies are sometimes good times weak
We did not find the error code

[davidzuts]

What condition are the toner cartridges?

[awbucher]

Black 50% Cyan 100% Margenta 20 % Yellow 50%

[tonerspills]

I was thinking along the same lines as David- are you using non-OEM (non-HP) cartridges. These specific error codes are not listed in the troubleshooting manual- but they seem to point towards the registration sensor assembly. What shape is the printer in? is it super dirty? If you are using a non-OEM cartridge, has alot of toner been spilled inside the machine?

Is the printer plugged directly into the wall? For another manufactures machines I work on- when codes not listed in the service manual are generated, it can be a voltage supply issue.

[awbucher]

We use only original toner.
We think that is the fault with the laser. They are polluted and therefore there is no correct information on the ITB and it comes to the calibration error consecutive DmaxDhalf
Or is the mistake of looking toward Formator?

[davidzuts]

This printer has good troubleshooting tools which should always be used before changing parts. Below is a link to access the disable cartridge check and once you do this you can run test pages with toners in correct slots and then run with toners swapped so as to determine if the slot is the issue or the toner or something else. Example when you run the first set of test pages with toners in correct position lets say the black is perfect but the cyan is bad. Well you swap the black and the cyan and run the same pages. If the black is now bad and the cyan is good then yes the cyan slot has an issue, but if the cyan is still bad then the toner cartridge is bad.

http://www.hp.com/cpso-support-new/pq/M775/howtoswapsetting.html