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The error 6004 occurs when the connection between the Canon Pixma TS9020 printer and the system is lost. To fix this issue, perform the simple troubleshooting instructions given below.

  • First, try to restart your Canon Pixma TS9520 printer.
  • Unplug the Canon printer completely from the power source.
  • After a while, reconnect the Canon printer to the power source.
  • Check if the connectivity issue is resolved.
  • If the connection type is wired, then make sure that the USB cable is not damaged.
  • If you find any damage in the USB cable, then replace it with the new one.
  • If the above troubleshooting method does not resolve the Canon printer connectivity issue, contact our technical supports to fix this issue.
  • If you have established a wireless connection, try restarting your printer, router, and computer.
  • Reset the router and re-establish the network connection between the printer and computer over the network.
  • If the issue remains unresolved, reset the printer.
CPTS9520 Code 6004