42LN5300, 42LN5390 (CHASSIS:LA32B) - LG TV Service Manual (repair manual). Page 40

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.

RS232C_PHONE

2012/06/21

53

NC4_S7LRM

R5302
100

RS232_PHONE

R5301
100

RS232_PHONE

D5301
ADUC 20S 02 010L 
20V

OPT

C5309
1000pF
50V

OPT

HP_LOUT

IC5301

MAX3232CDR

EAN41348201

RS232_PHONE

3

C1-

2

V+

4

C2+

1

C1+

6

V-

5

C2-

7

DOUT2

8

RIN2

9

ROUT2

10

DIN2

11

DIN1

12

ROUT1

13

RIN1

14

DOUT1

15

GND

16

VCC

D5302

20V

ADUC 20S 02 010L 

OPT

R5308

1K

HEAD_PHONE

R5307
1K

HEAD_PHONE

HP_DET

C5302

0.1uF

RS232_PHONE

C5310
1000pF
50V

OPT

PM_RXD

HP_ROUT

C5304

0.1uF

RS232_PHONE

+3.3V_Normal

R5305
1K

HEAD_PHONE

JK5301

KJA-PH-1-0177

RS232_PHONE

3

M3_DETECT

4

M4

5

M5_GND

1

M1

6

M6

C5306
0.1uF

RS232_PHONE

C5307
10uF
16V

HEAD_PHONE

C5305

0.1uF

RS232_PHONE

C5303

0.1uF

RS232_PHONE

+3.5V_ST

C5308
10uF
16V

HEAD_PHONE

R5306
10K

HEAD_PHONE

JK5301-*1

KJA-PH-0-0177

HEAD_PHONE

3

DETECT

4

L

5

GND

1

R

PM_TXD

R5309
0

HEAD_PHONE

RS-232C