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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
Mother board
Replace the
faulty part
Test
OK?
Parts: Signals:
U20
J3
J4
J9
F2
F3
F4
L20
L21
L22
L23
+5VS
USBP0+
USBP0-
USBP1+
USBP1-
USBP2+
USBP2-
USBP3+
USBP3-
Board-level
Trouble shooting
USBP4+
USBP4-
USBP5+
USBP5-
USB_OC#[0..5]
Check following parts and signals:
L97
L98
C32
C33
C384
R10
R27
R212
An error occurs when a USB I/O device is installed.
8.8 USB Port Test Error(1)
MiTac Secret
Confidential Document