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8170 N/B MAINTENANCE
USB Test Error
Check if the USB device is installed
properly. (Including charge board.)
Re-test
OK?
No
Yes
No
Yes
Correct it
Replace another known good charge
board or good USB device.
Replace
Motherboard
Correct it
Test
OK?
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.
Parts: Signals:
U17 J6
PJ2 U2
R4 R3
C1 C502
R[502:505]
L[1:4] R5
R6 C4
J2 J6
VCC5
USBVCC5
-USBOC1
USBP2_2-
USBP2_2+
-USBOC0
USBP0_0-
USBP0_0+
Board-level
Troubleshooting
8.10 USB Port Test Error
An error occurs when a USB I/O device is installed.