32LV3400-JA (CHASSIS:LE13B) - LG TV Service Manual (repair manual). Page 29

USB DOWN STREAM

USB DOWN STREAM

THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.

10/07/01

USB/EAR-PHONE

3    130

BCM_JAPAN

D302

5.6V

CDS3C05HDMI1

ESD_USB

Q300

MMBT3904-(F)

OPT

E

B

C

JK300

KJA-PH-0-0177

EAG61030001

3

DETECT

4

L

5

GND

1

R

USB_PWRON1

10:D4

C312
10uF

10V

Q301

MMBT3904-(F)

OPT

E

B

C

L301

MLB-201209-0120P-N2

120-ohm

USB_DM2

10:D4

+5V_USB

HP_L_OUT

Q26

+3.3V_NORMAL

D301

5.6V

CDS3C05HDMI1

ESD_USB

R320
4.7K

OPT

USB_PWRFLT1

10:D4

+5V_USB

D303

5.6V

CDS3C05HDMI1

ESD_USB

USB_PWRON2

10:D4

+3.3V_NORMAL

USB_DP2

10:D4

R319
4.7K

OPT

C311
10uF

10V

HP_R_OUT

Q21

R317

0

D300

5.6V

CDS3C05HDMI1

ESD_USB

Q303
MMBT3904-(F)

OPT

E

B

C

R318

0

C314

0.1uF

USB_DP1

10:D4

Q302
MMBT3904-(F)

OPT

E

B

C

SIDE_HP_DET

9:G3

C313

0.1uF

USB_PWRFLT2

10:D4

+3.5V_ST

L300

MLB-201209-0120P-N2

120-ohm

USB_DM1

10:D4

SIDE_HP_MUTE Q23;81:I4

R321
2.7K

R322
2.7K

R315

150

OPT

Q306
ISA1530AC1

OPT

E

B

C

Q307

2SC3052

OPT

E

B

C

HP/BT_LOUT_N

11:F2

HP/BT_ROUT_P

11:F2

L303

BG2012B080TF

IC300
TPA6132A2

EAN60724701

3

INR+

2

INL+

4

INR-

1

INL-

5

OUTR

6

G0

7

G1

8

HPVSS

9

CPN

10

PGND

11

CPP

12

HPVDD

13

EN

14

VDD

15

SGND

16

OUTL

L304

BG2012B080TF

C318
2.2uF
10V

HP_R_OUT

C305

1uF

10V

R306

OPT

100K

HP/BT_LOUT_P

11:F2

C316
2.2uF
10V

+3.3V_NORMAL

R301

OPT

C319

2.2uF

10V

R302

4.7K

C308
1uF
10V

R303

OPT

C306
1uF

10V

SIDE_HP_MUTE

R300

4.7K

L302

10uH

C304
1uF
10V

C307
1uF

10V

HP_L_OUT

HP/BT_ROUT_N

11:F2

Q308

2SC3052

E

B

C

+3.3V_NORMAL

R311
1K

R309
4.7K

R310
0

OPT

C315

10uF
10V

C317

0.1uF

16V

R314
120

R307
0

1/16W

R308
0

1/16W

C320
0.22uF
16V

C321
0.22uF
16V

JK303

3AU04S-305-ZC-(LG)

EAG62571101

1

2

3

4

5

JK302

3AU04S-305-ZC-(LG)

EAG62571101

1

2

3

4

5

IC301

AP2191DSG

EAN61849601

3

IN_2

2

IN_1

4

EN

1

GND

5

FLG

6

OUT_1

7

OUT_2

8

NC

IC302

AP2191DSG

EAN61849601

3

IN_2

2

IN_1

4

EN

1

GND

5

FLG

6

OUT_1

7

OUT_2

8

NC

C309

100uF

16V

C310

100uF

16V

USB2

EARPHONE BLOCK

EARPHONE AMP

USB(DVR Ready)

USB BLOCK

USB

EARPHONE JACK SIDE

USB1 (DVR Ready)

CHANGE USB_PWRFLT PULL-UP FROM 5V TO 3.3V

Close to the IC