Laptop User Manual

123
7521
7521
Plus / N N/B MAINTENANCE
Plus / N N/B MAINTENANCE
8.9 USB PORT TEST ERROR
An error occurs when a USB I/O device is installed.
J508
U24
SIS
630S
SH6
R143
R142
R140
R141
C14
C25
B1
A1
B3
B2
A3
A2
B4
A4
GND1
GND2
GND3
GND4
L504
L511
USB_GND
SH21
L2
F502
USB_B1
C507
L6
+5V
R20
C506
USB_OC0#
R19
F503
USB_A1
+5V
R22
USB_OC1#
R23
RP21
L12
USBP0+
D/USBP0+
USB_B3
USBP0-
D/USBP0-
USB_B2
L8
D/USBP1+
USBP1+
USB_A3
D/USBP1-
USBP1-
USB_A2
CP7
GND