Usb Troubleshooting - Nokia RM-849 Service Manual

RM-849; (Nokia Lumia 610)
BB Troubleshooting and Manual Tuning Guide

USB troubleshooting

USB troubleshooting
Connect phone to PC with
known good micro USB cable .
YES END
Can PC recognizes the phone
as USB device ?
No
Visual check for
J 1601
Measure
USB _ VBUS _ CONN _ 0 ( TP 28 ) Go to Power source
No
While USB device is connected troubleshooting
to PC , Is it 5 V ?
Yes
Change PWB
Pass
END
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