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TECHNICAL SERVICE MANUAL
8.9 USB Test Error-1
An error occurs when a USB I/O device is installed.
USB Test Error
Check if the USB device is installed
properly.
Test
OK?
No
Replace another known good USB
device.
Re-test
OK?
No
Troubleshooting
Yes
Correct it.
Yes
Correct it.
Board-level
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
Motherboard
128
Main Board
Parts:
Signals:
U513
USB_OC0#
R203
USB_OC1#
R204
USBP[0..2]+
R199
R201
USBP[0..2]-
L21
USB[0..2]+
L23
USB[0..2]-
L28
L29
L33
Prestigio Nobile 1510
Daughter Board
Parts:
Signals:
U502
+5VS_P
U501
USB_OC0#
J3
USB_OC1#
J511
L6
USB[0..2]+
L7
USB[0..2]-
L2
+VCC_USB_0
L502
+VCC_USB_1
L501
L503
+VCC_USB_2
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