CANON IR 2018 no copy but self print okay

[teckat]

READ PDF--ERRORS-E245, E246, E247, E354 and E355-TP05.pdf

E247=Counter Memory PCB ISSUE/Error in SRAM on Main Controller PCB and Counter Memory PCB.

E245, E246, E247, E354 and E355
These are error codes not found in service materials that when encountered can be difficult to troubleshoot.

An error has been detected in the result of verifying the soft counter reading stored on the Counter Memory PCB and SRAM

Hope u have not been swapping pcb's
The Counter Memory PCB is a matched board with the Serial Number PCB and cannot be swapped with one from any other equipment. Doing so may change the error code and will not correct the problem and will certainly add to confusion, thus increasing downtime.

If replacing the Counter Memory PCB does not fix an E245, E246 or E247 code, suspect a failed Main
Controller PCB (put back the original Counter Memory PCB when replacing the Main Controller
PCB).

[tones27]

I took all the parts off the old image processor pcb and put it on the new image processor pcb that is when i started getting the e247 error but if i put the old one back in it comes up but still copies blank but will print fine im kinda lost now and not sure what to do in this case any other suggestions