If your printer sometimes does not power on, it may be in need of a firmware update.

The firmware version is provided on the printout when performing a Nozzle Check Pattern.  In order to print the Nozzle Check, follow the procedure below.    

1. Unplug the printer power cord from the Printer.
    
2. Wait for 2 minutes or longer.
    
3. Reinsert the power cord into the Printer.
    
4. Press the ON button located on the front panel.
    
5. Perform a Nozzle Check.
    
6. Check the Firmware Version.  The Firmware version is printed below the printed Nozzle Check Pattern, underneath the number of pages. It is printed in the format "Ver.  x.xxx" where "x" denotes a digit 0 through 9.
   
   example:      
7. If the Firmware Version is 1.041, your printer requires a Firmware update

Firmware Update

If a Firmware update is required, the process can be performed using a USB cable or wirelessly using the Remote UI.

USB

If you will be using a USB cable to perform the update, you must first download the firmware update software listed in the Firmware section in Drivers & Software.  Click the Select button to the side of the firmware listing for your computer (Windows or Mac).  Read the information contained in "How to Download and Install" , agree to the disclaimer, then click the Download button. After you have installed the software, follow the Update Procedure instructions in the Update Procedure - USB method document.
 

Wirelessly

To perform the update wirelessly, follow the instructions given in the document Update the MG3520 Firmware Wirelessly using Remote UI