mitac 8599.pdf - tim.id.au
mitac 8599.pdf - tim.id.au
mitac 8599.pdf - tim.id.au
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8.11 USB Port Test Error (1)<br />
Re-test<br />
OK?<br />
No<br />
No<br />
Yes<br />
Replace another known good USB device.<br />
Yes<br />
Correct it<br />
8599 N/B Maintenance<br />
An error occurs when a USB I/O device is installed.<br />
USB Test Error<br />
Check if the USB device is installed<br />
properly.<br />
Test<br />
OK?<br />
Correct it<br />
Replace<br />
Motherboard<br />
Board-level<br />
Troubleshooting<br />
Check the following parts for cold solder or one of the following parts<br />
on the mother-board may be defective, use an oscilloscope to check the<br />
following signal or replace the parts one at a <strong>tim</strong>e and test after each<br />
replacement.<br />
U20<br />
U13<br />
U1<br />
U2<br />
U7<br />
J3<br />
J4<br />
J9<br />
L33<br />
L34<br />
R81<br />
R82<br />
Parts: Signals:<br />
R63<br />
R64<br />
L15~L18<br />
R6<br />
R15~R20<br />
R263~R274<br />
R276<br />
L59<br />
R194<br />
R196<br />
R262<br />
+3V<br />
+5V<br />
USBP[0:5]+<br />
USBP[0:5]-<br />
USB0VCC5<br />
USB1VCC5<br />
USB2VCC5<br />
USB3VCC5<br />
USB4VCC5<br />
USB5VCC5<br />
USBVDD<br />
USBVSS<br />
USBPVDD<br />
USBPVSS<br />
USB_OC#[0:5]<br />
USBCLK_SB<br />
USB12M_SB<br />
119
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