If an error message is displayed on the LCD, take the corresponding action described below.
 

Message	Action
"There are no photos in the memory card."	There are no image data stored on the memory card that can be read by this machine. The machine may not recognize the file if the file name or the folder path contains certain characters. Use only alphanumeric characters. Photo data edited or processed on a computer must be printed from the computer.
"The ink may have run out. Replacing the ink tank is recommended." U041	If the lamp on the ink tank is flashing, ink may have run out. Replacing the ink tank is recommended. If printing is in progress and you want to continue printing, press the OK button with the ink tank installed. Then printing can continue. Replacing the ink tank is recommended after the printing. The machine may be damaged if printing is continued under the ink out condition. If multiple ink lamps are flashing red, check how fast they are flashing. Fast flashing (at about 1-second intervals) indicates the tank is empty. Slow flashing (at about 3-second intervals) indicates ink is low.
"The following ink has run out. Replace the ink tank." U163	Ink has run out. (The lamp on the ink tank flashes.) Replace the ink tank and close the Scanning Unit (Printer Cover). Printing under the current condition 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 malfunction or trouble which may be caused by continuation of printing under the ink out condition. If the function for detecting the remaining ink level is disabled, the ink tank in gray is displayed in the remaining ink volume screen on the LCD.
"Print head is not installed. Install the print head." U051 "The type of print head is incorrect. Install the correct print head." U052	Follow the directions given in the Easy Setup Instructions to install the Print Head. If the Print Head is already installed, remove the Print Head once and then reinstall it. If the error is not resolved, the Print Head may be damaged. Service is required. For support and service options, sign into (or create) your Canon Account from the link below. My Canon Account
"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. - More than one ink tanks of the same color are installed. Confirm that the ink tanks are installed in the appropriate positions.
"The ink absorber is almost full. Press [OK] to continue printing. Contact the service center."	The machine has a built-in ink absorber to hold the ink used during Print Head Cleaning, for example. This error message indicates that the ink absorber is nearly full. Press the <OK> button to cancel the error so you can continue printing. However, because printing is disabled once the ink absorber becomes completely full and until the ink absorber is replaced, you are recommended to contact a Canon service representative as early as possible. Service will soon be required. For support and service options, sign into (or create) your Canon Account from the link below. My Canon Account (You will need to replace a particular part of the machine.)
"The device may be incompatible. Remove the device and check the manual supplied with the connected device."	A communication time out occurs if an operation takes too long or if it takes too much time to send data. This may cancel printing. In such cases, disconnect and reconnect the USB cable. When printing from a PictBridge compliant device, depending on the model or brand of your device, you may have to select a PictBridge compliant print mode on the device before connecting it to the machine. You may also have to turn on your device or select Play mode manually after connecting the device to the machine. Perform necessary operations before connecting your device referring to its instruction manual. If the error is still not resolved, check if you can print another photograph. Check your device connected to the machine. Only PictBridge compliant devices or the optional Bluetooth Unit BU-20 can be connected to your machine for direct printing.
"The remaining level of the following ink cannot be correctly detected. Replace the ink tank." U130	The 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 in the remaining ink volume screen on the LCD.
"The following ink tank cannot be recognized." U043 U140 U150	The ink tank is not installed. Install the ink tank. The ink tank is not compatible with this machine. (The lamp on the ink tank is off.) Install an appropriate ink tank. An Ink tank error has occurred. (The lamp on the ink tank is off.) Replace the ink tank.
"**** Printer error has occurred. Turn off power then back on again. If problem persists, see the manual."	Turn off the machine, and unplug the power cord of the machine from the power supply. After a while, plug the power cord of the machine back in, and then turn on the machine. If the same error occurs, service is required. For support and service options, sign into (or create) your Canon Account from the link below. My Canon Account
"Scanner is not operating correctly."	Turn off the machine, and unplug the power cord of the machine from the power supply. After a while, plug the power cord of the machine back in, and then turn on the machine. If the same error occurs, service is required. For support and service options, sign into (or create) your Canon Account from the link below. My Canon Account
"The card is currently write-enabled. Set to read-only mode before performing operation."	The Card Slot is set to Read/write mode. You cannot print in this mode. After writing on the memory card, set to Read-only mode again.
"An unsupported USB hub is connected. Remove the hub."	If a PictBridge compliant device is connected via a USB hub, remove the hub and connect it directly to the machine.