Testing Usb Port - Ryobi RY48ZTR75 Service Manual

TESTING USB PORT

The USB port is marked "+" (yellow wire)
and "-" (black wire).
1. Power ON Mower.
2. Set DMM to measure DC Volts.
3. Connect a scrap USB cord with one end
removed.
4. Measure 5V between the red and black wire
USB power indicator LED*
Measure 12V where indicated below. If LED
indicator is not on, USB port is bad.
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Note: The "+" spade lug is larger than the "-" lug
*USB operated 11.5v-12.5V nominal
power IN, 5V OUT. The LED indicates
there is power IN, But does not
guarantee the USB 5V out is working.