8224 N/B Maintenance
8224 N/B Maintenance
133
8.10 USB Port Test Error-1
An error occurs when a USB I/O device is installed.
Re-test
OK?
Test
OK?
USB Port Test Error
Check if the USB device is installed
properly.
No
Yes
No
Yes
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.
Signals:
Replace another known good USB
device.
Board-level
Troubleshooting
Correct it.
+(B)5V
USB_OC0#
USB_OC1#
USB_OC2#
USBP[0..3]+
USBP[0..3]-
+VCC_USB_0
+VCC_USB_1
+VCC_USB_2
+VCC_USB_3
Parts:
U13
J512
U517
L53
L55
L59
R672
R673
BJ502
BJ504
BU1
BU2
Correct it.
Replace
Motherboard
BL1
BL2
BL510
BL501
BL503
BL504
BL506
BL507
BL509
BR502
BR503
BU501
MiTac Secret
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Summary of Contents for 8224
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