22LN4060 (CHASSIS:LM91P) - LG TV Service Manual (repair manual). Page 23

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.

TUNER & IR

IC401

AP1117E18G-13 

2

OUT

3

IN

1

ADJ/GND

+3.3V_TU

TU401
TDSH-G501D(B) 

PAL

5

+B1[3.3V]

11

DIF[N]

2

RESET

10

DIF[P]

4

SDA

1

NC

9

IF_AGC

8

CVBS

3

SCL

7

+B2[1.8V]

6

SIF

A1

A1

B1

B1

A2

A2

B2

B2

R413-*1
0

NTSC

R407
2.2K

1

/

1

6

W

5

%

R403
100

C402
47pF

50V

L401

BLM18PG121SN1D

C409
100pF

50V

C403
47pF
50V

IF_AGC

IF_N

TU402
TDSS-H501F(B) 

NTSC

5

+B1[3.3V]

11

DIF[N]

2

RESET

10

DIF[P]

4

SDA

1

NC_1

9

IF_AGC

8

NC_3

3

SCL

7

+B2[1.8]

6

NC_2

12

SHIELD

A1

A1

B1

B1

C411

0.1uF

16V

R404
100K

R412
100

R414

10

PAL

C412

10uF

16V

C407

10uF

16V

C408

0.1uF

16V

C401

0.1uF

16V

R411

1

C405

0.1uF

16V

+3.3V_TU

IF_P

+3.3V_TU

R408
2.2K

1

/

1

6

W

5

%

TUNER_SCL

TUNER_SDA

R405

33

R406

33

C404
22uF
10V

R401

0

READY

R410

1

1/10W

C410

0.1uF

16V

100pF

C406

50V

+3.3V_M

R414-*1
0

NTSC

R413

10

PAL

R402

0

PAL_NON_ISOLATOR

TUNER_RESET

R409

1

1/10W

TU402-*1
TDSS-G501D(B)

PAL_NON_ISOLATOR

5

3.3V

11

DLIF_[N]

2

RESET

10

DLIF_[P]

4

SDA

1

NC_1

9

IF_AGC

8

NC_3

3

SCL

7

1.8V

6

NC_2

12

SHIELD

A1

A1

B1

B1

TUNER

4  8

Near the pin

IF

should be guarded by ground

Size change,0929

Close to the tuner

EAX65303201

LN4050

2012/12/18