8399 N/B Maintenance

8.8 USB Port 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. (Including charge board.)

Test Yes

OK?

No

Replace another known good USB device.

Re-test Yes

OK?

No

 

 

Document

Board-level

 

 

Secret

 

 

Trouble shooting

 

 

 

 

 

 

 

MiTac

 

 

 

 

 

Correct it

 

 

F3

R10

USBP1-

USB_OC#[0..5]

Confidential

 

Repl ce

 

Check following parts and signals:

 

 

Mo her bo rd

 

 

 

 

 

 

 

 

Parts:

 

Signals:

 

 

 

 

U20

L97

+5VS

USBP4+

 

 

 

J3

L98

USBP0+

USBP4-

 

 

 

J4

C32

 

 

 

USBP0-

USBP5+

 

 

 

J9

C33

 

 

 

 

 

 

 

 

F2

C384

USBP1+

USBP5-

Replace the

 

 

F4

R27

USBP2+

 

 

 

L20

R212

 

faulty part

 

 

USBP2-

 

 

 

L21

 

 

 

 

 

 

 

 

 

 

 

L22

 

USBP3+

 

 

 

 

L23

 

USBP3-

 

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