12-16-2020 10:53 PM
My symptoms appear identical to those described by WUSONG on 7/20/2019. I followed the corrective action, executing a scanner patch. But no success.
I have the Canon MF4770n scanner/printer/fax/copier attached, via a network, to a PC running Windows 10. Previously, I had the MF4770n attached, via a network, to a PC running Windows 7.
For 5+ years, the scan function worked fine on the Windows 7 PC. Near the end of the Windows 7 Computer's service, the symptoms started. The problem persists when attached to the current Windows 10 PC.
Printing works fine on the network (on both the previous Windows 7 PC and the current Windows 10 PC). But when I attempt to execute a scan, the MF4770n display keeps showing "connect computer".
This problem started itermittently, on the Windows 7 PC. Restarting the computer seemed to correct it. Then, even that process failed, making the problem permanent.
The MF4770n (serial number QZJ892XX). I anonymized the last two numbers of the serial number.
In addition, the printer no longer goes into Energy Saver mode on its own. And won't go into that mode when I press the button.
I have reloaded the driver for the printer.
I tried attaching the printer to the computer via a USB cable (disconnecting the network cable, updating the driver to let it know I was (now) using a USB cable.
I downloaded and installed the patch provided in WUSONG's troubleshooting thread. Still, the problems persist.
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