See big button on your printer like power on ( this is on the left side ), black & white, color, and then stop button ( these are on the right side).
1. first turn off your printer
2. push the b/w + color + stop ( or maybe ok button ) together and hold
3. push power on button and hold ( so you push 4 button together ) don't release all the button until you see the light indicator is blinking and then a message display on the lcd
4. release you finger from the button
5. push the color button ( once )
6. turn off the printer
7. turn it on again