Following are the steps to stop printer from printing a test page. You have to follow the exact method and in order:
1. Turn off the printer and wait 10 seconds. Turn it on again
2. Let the printer print the test page.
3. After the test page is printed, disconnect the USB cable connecting the printer to your computer. DO NOT turn off the printer while disconnecting the USB cable.
4. Place the test page on the scanner glass and press the SCAN button on the printer. The ON light will flash as the page is being scanned.
5. Remove the test page when the ON light is steady.
6. Finally, turn off the printer and wait another 10 seconds. Then turn it on again. No more printing test pages
Now no more testing pages.