The Canon Pixma MX490 ink cartridges can be replaced easily by following the guidelines that follow. However, before starting the Canon Pixma MX490 ink replacement process, check whether there is ink left in these cartridges. To do this from the computer where the Canon driver has been installed and is connected to the Canon Pixma device, launch the Canon Pixma MX490 driver software and navigate to the Maintenance tab. Now, select View Printer Status to bring up the Canon IJ Status Monitor window. Click Ink Details to check whether there are any ink cartridge related errors. Have a look at the level of black & color ink, and then proceed to change the Canon MX490 ink cartridges if required by following the steps given below.