Some ink tanks are not installed in place."U072
"More than one ink tank of the following color is installed."U071
Possible causes are as follows:Some ink tanks are not installed in the correct position. (The lamp on the ink tank flashes.)More than one ink tanks of the same color are installed. (The lamp on the ink tank flashes.)Confirm that the ink tanks are installed in the appropriate positions.
Massage"The remaining level of the ink cannot be correctly detected."U130
ActionThe remaining ink level cannot be correctly detected. (The lamp on the ink tank flashes.)Replace the ink tank and close the Scanning Unit (Printer Cover).Printing with an ink tank that was once empty may damage the machine.
If you want to continue printing in this condition, you need to release the function for detecting the remaining ink level. Press and hold the Stop/Reset button for at least 5 seconds, and then release it.With this operation, releasing the function for detecting the remaining ink level is memorized. Please be advised that Canon shall not be liable for any machine malfunction or damage caused by refilled ink tanks.
If the function for detecting the remaining ink level is disabled, the ink tank in gray is displayed on the LCD when checking the current ink level.
Since printing in this condition may cause the contents of the fax to be lost, the machine stores received faxes in memory without printing until the ink tank is replaced. Print the fax stored in memory manually after replacing the ink tank. You can set the machine to print received faxes forcibly without storing them in memory, but a part of contents or all contents of the fax may not be printed.