MiTAC 8170 Manual De Usuario

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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.