An Error Message Is Displayed on the LCDIf an error message is displayed on the LCD, take the corresponding action described below.Message ActionCHECK INKU051/U052/U053/U059The FINE Cartridge may not be installed properlyor the Cartridge may not be compatible with thismachine.Open the Scanning Unit (Printer Cover) andinstall the appropriate FINE Cartridge.If the error is not resolved, the FINE Cartridgemay be damaged. Contact your Canon servicerepresentative.CHECK INKU075/U076Make sure that each FINE Cartridge is installedin the correct position.See Replacing a FINE Cartridge.CHECK INKU140The FINE Cartridge may not be compatible withthis machine. Install the appropriate FINECartridge. See Replacing a FINE Cartridge.CHECK INKU150The FINE Cartridge may not be installedproperly.Open the Scanning Unit (Printer Cover) andinstall the FINE Cartridge properly.If the error is not resolved, the FINE Cartridgemay be damaged. Contact your Canon servicerepresentative.CHECK INKU162Ink may have run out.The function for detecting the remaining ink levelwill be disabled since the ink level cannot becorrectly detected.If you want to continue printing without thisfunction, press the Stop/Reset button for atleast 5 seconds.Canon recommends to use new genuine Canoncartridges in order to obtain optimum qualities.Please be advised that Canon shall not be liablefor any malfunction or trouble caused bycontinuation of printing under the ink out149