42SL90QR-LA, 42SL90QR-TA (CHASSIS:LP91L) - LG TV Service Manual (repair manual). Page 24

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.

4.7K

R421

ZD402

SUB_SDA

KEY2

120ohm

L406

+3.3V_MULTI_MST

120ohm

L403

0.1uF

C408

ZD400

470pF

C412

+5VST_MST

SUB_SCL

KEY1

500-ohm

L410

47uF

C406

470pF

C404

+3.3V_MST

500-ohm

L411

4.7K

R420

0

R417

0.1uF

C411

+3.3V_MST

0

R400

READY

0.1uF

C414

ZD401

47pF

C403

+3.3V_MST

MLB-201209-0120P-N2

L404

MLB-201209-0120P-N2

L407

0

R401

0

R403

BLT_DN

BLT_DP

+3.3V_MULTI_MST

0

R402

0 . 1 u F

C400

0.1uF

C407

READY

47K

IR-OUT

R426

120ohm

L402

+5VST_MST

10K

IR-OUT

R429

10K

IR-OUT

R427

10K

IR-OUT

R428

IR

+5VST_MST

22

IR-OUT

R430

2SC3052

Q405

IR-OUT

E

B

C

2SC3052

Q404

IR-OUT

E

B

C

0

R404

READY

12507WR-10L

P402

1

2

3

4

5

6

7

8

9

10

11

SUB_SCL

ZD403

500-ohm

L401

ZD404

SUB_SDA

500-ohm

L400

47uF

C402

MLB-201209-0120P-N2

L408

+5VST_MST

+3.3V_MST

+3.3V_MULTI_MST

MLB-201209-0120P-N2

L405

0

R406

0

READY

R405

0.1uF

C401

12507WR-12L

P400

1

2

3

4

5

6

7

8

9

10

11

12

13

12507WR-06L

P401

1

2

3

4

5

6

7

IR_OUT

CONTROL KEY/LED

KEY/IR/BLUETOOTH

H6 SL90

4       1 2

2 0 0 9 / 0 6 / 0 2

c l o s e   t o   R 4 0 1

BLUETOOTH

IR/EYE-Q

EAX61337301
Mstar LED SL90