Service manual

8224 N/B Maintenance
8224 N/B Maintenance
134
8.10 USB Port Test Error-2
An error occurs when a USB I/O device is installed.
+VCC_USB_0
USBP0+
USBP0-
2
3
1
C322
0.1U
L59
120Z/100M
C347
22U
+5V
VIN
CE
GND
VOUT0
3
4
1
2
U517
RT9701-CB
VOUT1
5
R672
33K
C675
1000P
USB_OC0#
R673
47K
J512
P25
USB Port
4,GND1,GND2
GND_USB
L53
0
L55
0
GND_USB
JO58
JO57 JO56
B+VCC_USB_1
USBP1+
USBP1-
2
3
1
BC5
0.1U
BL1
120Z/100M
BC4
22U
B+5V
VIN
CE
GND
VOUT0
3
4
1
2
BU1
RT9701-CB
VOUT1
5
BR4
33K
BC2
1000P
USB_OC1#
BR3
47K
BJ502
P45
USB Port
4,GND1,GND2
BGND_USB0
BL501
0
BL503
0
BGND_USB0
BJO504
BJO503 BJO1
21
Daughter Board
J504 BJ501
P44P33
5
3
21
5
3
BUSBP1+
BUSBP1-
BUSB_OC1#
BGND
BGND BGND
U13
SB
ICH7-M
P20
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