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Mazda NB1 navigation hidden service menu helps with diagnosing system error. Perform various tests: LCD screen, tuner signal strength, individual speaker test, software version, GPS antenna, touch screen calibration, rear view camera and more. This device is know from Mazda CX-5 and Mazda 6 3rd gen. More at http://mr-fix.info/mazda-nb1-hidden-menu-tomtom-navigation/ Music by Dan-O at DanoSongs.com
