42LP860H (CHASSIS:LD33B) - LG TV Service Manual (repair manual). Page 36

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.

IR

+3.5V_ST

+3.5V_ST

R4104

47K

Q4101

2SC3052

E

B

C

R4103
47K

C4102

0.1uF

C4100

0.1uF

R4114
100

L4100

BLM18PG121SN1D

C4107
100pF

50V

KEY2

KEY1

R4113
100

+3.5V_ST

C4104

1000pF

50V

LED_R

R4145

10K

+5V_ST

IR_OUT_HDMI1

R4146

10K

IR_OUT_CTRL

+5V_ST

R4149

22

R4141

22

R4139

30K

R4143

30K

IR_OUT_RS232C

+5V_ST

R4135

30K

+5V_ST

R4148

10K

R4147

10K

R4137

22

IR_OUT_HDMI2

R4129

22

IR_OUT_HDMI3

R4117

10K

1%

+3.5V_ST

R4118
10K
1%

R4107

47K
OPT

R4130

10K

R4134

10K

R4138

10K

R4142

10K

Q4102

2SC3052

E

B

C

Q4103

2SC3052

E

B

C

Q4105

2SC3052

E

B

C

Q4107

2SC3052

E

B

C

Q4108

2SC3052

E

B

C

Q4106

2SC3052

E

B

C

Q4104

2SC3052

E

B

C

P4101

12507WR-08L

1

GND

2

KEY1

3

KEY2

4

+3.5V_ST

5

GND

6

LOGO/LED_R

7

IR

8

GND

9

 

D4100

5.6V

OPT

D4101

5.6V

OPT

R4125

10K LED_R

D4104

5.6V

OPT

Q4100
MMBT3904(NXP)

LOGO_LIGHT

E

B

C

+3.5V_ST

R4136
1K

LOGO_LIGHT

C4120
0.1uF
16V

LOGO_LIGHT

LOGO_LIGHT

R4132

10K

LOGO_LIGHT

R4133
10K

OPT

R4131

22

LOGO_LIGHT

R4100

22

IR & KEY

41

IR / KEY

2012.12.10

xxLP860H-ZA

Place Near MICOM