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BackWhat 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.
Suggested Remedy
| If... | Then... | But... |
| 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
Explanation
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.