MiTAC 8050QMA Manuel de service télécharger pdf (Page 129)

128

80

80

50QMA

50QMA

N/B Maintenance

N/B Maintenance

8.9 USB Test Error-2

An error occurs when a USB I/O device is installed.

U709

South Bridge

ICH6-M

P11

U501

RT9701-CB

P14

USB Port

J701

2

3

L5

90Z/100M

32

14

1

+VCC_USB_1

L6

90Z/100M

41

23

A3

A2

A1

P14

R502

33K

C505

1000P

VIN

3

+5V

C172

1µ

VOUT0,1

1,5

C504

150µ

R503

47K

+VCC_USB_0

R791

22

4

CE

C503

0.1µ

L502

120Z/100M

C502

0.1µ

L501

120Z/100M

SW_VDD3

From U13

P23

USB_OC0#

USBP0+

USBP0-

USBP1-

USBP1+

GND

2

R179

0

R180

0

R192

0

R186

0

F503

1.1A

U503

RT9701-CB

P14

USB Port

J706

2

3

L10

90Z/100M

23

41

1

+VCC_USB_3

L13

90Z/100M

14

32

A3

A2

A1

P14

R10

33K

C163

1000P

VIN

3

+5V

C178

1µ

VOUT0,1

1,5

C2

150µ

R159

47K

+VCC_USB_2

R792

22

4

CE

C4

0.1µ

L1

120Z/100M

C769

0.1µ

L552

120Z/100M

SW_VDD3

From U13

P23

USB_OC1#

USBP2+

USBP2-

USBP3-

USBP3+

GND

2

R191

0

R190

0

R786

0

R787

0

F504

1.1A

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