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TECHNICAL SERVICE MANUAL
8.9 USB Test Error
An error occurs when a USB I/O device is installed.
USB Test Error
Check if the USB device is installed
properly. (Including charge board.)
Test
OK?
No
Replace another known good charge
board or good USB device.
Re-test
OK?
No
Board-level
Troubleshooting
Yes
Correct it.
Motherboard
Yes
Correct it.
Check the following parts for cold solder or one of the following
parts on the mother-board may be defective, use an oscilloscope
to check the following signal or replace the parts one at a time
and test after each replacement.
Replace
130
Parts:
U12
J507
J506
U521
U522
L44
L47
L38
L41
R585
R574
C763
Prestigio Nobile 150
Signals:
+5V_P
USBOC1#
USBOC3#
USBP[0..3]+
USBP[0..3]-
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