What you will see
A possible 844 error (Unable to Calibrate) results from attempting to update the printer will older code than what is currently on the device.
Or, a new 'CCD' assembly was installed into a printer that contained older firmware code levels.
|Replacing the CCD assembly...||Update firmware first, and then install the new CCD assembly.||
Make sure that the firmware was released after July 2011.
For example, P433b
Charged Coupled Device
A change in one of the printer's hardware components required a slight change to the printer's firmware.
Still Need Help?
If you require additional assistance, please see Contact information. NOTE: When calling for support, you will need your printer model/machine type and serial number (SN).
Please be near the products described in this article to expedite the support process and reduce call-back situations.