42LN549D (CHASSIS:LB3AX) - LG TV Service Manual (repair manual). Page 32

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.

10K

R936

EXT_SPK

+3.5V_ST

22.0uH

L904

EXT_SPK

EXT_OUT_L

EXT_OUT_R

10K

R922

EXT_SPK

4.7K

R923

EXT_SPK

EXT_AMP_L

0 . 2 2 u F
50V

C917

EXT_SPK

BLM18PG121SN1D

L902

EXT_SPK

4.7K

R935

EXT_SPK

47uF

25V

C923

EXT_SPK

+3.3V_Normal

EXT_AMP_R

10K

R933

EXT_SPK

4 . 7 u F
50V

C916

EXT_SPK

EXT_SPK_DET

1uF

10V

C928

EXT_SPK

4.7K

R934

EXT_SPK

TPA3124D2PWPR

IC901

EXT_SPK

3

PVCCL_2

2

SD

4

MUTE

1

PVCCL_1

6

RIN

5

LIN

7

BYPASS

8

AGND_1

9

AGND_2

10

PVCCR_1

11

VCLAMP

12

PVCCR_2

13

PGNDR_1

14

PGNDR_2

15

ROUT

16

BSR

17

GAIN1

18

GAIN0

19

AVCC_1

20

AVCC_2

21

BSL

22

LOUT

23

PGNDL_1

24

PGNDL_2

1uF

OPT

C925

0 . 2 2 u F
50V

C918

EXT_SPK

22.0uH

L905

EXT_SPK

0 . 1 u F
50V

C915

EXT_SPK

10K

OPT

R932

EXT_OUT_R

SUB_AMP_MUTE

001:AB13

EXT_OUT_L

1uF

10V

C927

EXT_SPK

10K

R931

EXT_SPK

P E J 0 3 4 - 0 1  

JK902

EXT_SPK

6B

T_TERMINAL2

7B

B_TERMINAL2

5

T_SPRING

4

R_SPRING

3

E_SPRING

100

R938

EXT_SPK

47uF

25V

C924

EXT_SPK

1uF

OPT

C926

+24V

0 . 1 u F

50V

C914

EXT_SPK

10K

OPT

R930

10K

R937

EXT_SPK

0 . 1 u F

50V

C913

EXT_SPK

100K

R939

EXT_SPK

MMBT3904(NXP)

Q903

EXT_SPK

E

B

C

10K

R924

EXT_SPK

4.7K

EXT_SPK

R920

+3.5V_ST

10K

OPT

R921

0 . 4 7 u F
50V

C921

EXT_SPK

0 . 4 7 u F
50V

C919

EXT_SPK

0 . 4 7 u F
50V

C920

EXT_SPK

0 . 4 7 u F
50V

C922

EXT_SPK

1uF
50V

C911

EXT_SPK

1uF
50V

C912

EXT_SPK

RJP / EXT AMP

9

LA2AW

2 0 1 2 . 0 9 . 1 1

EXT_SPEAKER

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