If the error code 6000 occurs on the Canon Pixma TR4520 printer, follow the solutions mentioned below.The cause for this error code is a paper jam in the output slot, transport, ADF, the rear side of the printer, or inside the printer. So, try to remove the jammed paper bits to resolve the Canon Pixma TR4520 Error Code 6000.
Paper jam in the Output paper slot
Paper jam inside the ADF (Automatic Document Feeder)
Paper jam inside the printer