8050
8050
D N/B Maintenance
D N/B Maintenance
118
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 USB
device.
Replace
Motherboard
Replace
the faulty part
Test
OK?
Parts:
Signals:
U715
U705
U701
U712
J701
J706
L701
L702
L2
L5
+5VS
USBP0+
USBP0-
USBP1+
USBP1-
USBP2+
USBP2-
Board-level
Troubleshooting
USBOC0#
+VCC_USB_0
+VCC_USB_1
+VCC_USB_2
Check following parts and signals:
L22
L708
R701
C701
R706
C713
C703
C709
8.7 USB Port Test Error
An error occurs when a USB I/O device is installed.
MiTac Secret
Confidential Document