50PK750-TA (CHASSIS:PA02A) - LG TV Service Manual (repair manual). Page 18

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.

ISA1530AC1

Q604

E

B

C

82

R616

100K

R622

+3.3V_TU

SDA0_3.3V

0 . 1 u F
16V

C608

READY

100pF
50V

C603

TU_IF_P_BCM

100pF
50V

C602

+5V_TU

SCL0_3.3V

TU_SIF

4.7K

R626

0 . 1 u F

16V

C610

0 . 1 u F
16V

READY

C615

+5V_TU

0

READY

R608

+1.2V_TU

TU_CVBS

TUNER_RESET

TU_IF_AGC_BCM

10uF
10V

READY

C619

0 . 1 u F

16V

C612

100

R617

0 . 1 u F

16V

C607

470

R625

IF_AGC_SEL

0 . 1 u F
16V

C616

+5V_TU

10K

READY

R621

TU_IF_N_BCM

2SC3052

READY

Q600

E

B

C

+3.3V_TU

ISA1530AC1

Q602

E

B

C

+3.3V_TU

GND

0 . 1 u F
16V

C618

10

R613

1.2K

R623

READY

0 . 1 u F

16V

C606

+1.2V_TU

AZ1117H-ADJTRE1(EH11A)

IC600

2

OUTPUT

3

INPUT

1

ADJ/GND

CIC21J501NE

L602

22uF

10V

C620

10uF
10V

C621

0 . 1 u F

16V

C611

0

READY

R605

0

R607

0 . 1 u F
16V

C617

0 . 1 u F
16V

C3062

READY

+3.3V_TU

+3.3V_MULTI

TDTJ-S001D

TU600

14

3.3V

13

1.2V

5

AS

12

GND

11

VIDEO

2

BST_CNTL

10

NC

4

NC[RF_AGC]

1

ANT_PWR[OPT]

17

DIF_1

9

S I F

8

NC[IF_TP]

3

+B

16

IF_AGC_CNTL

7

SDA

6

SCL

15

RESET

18

DIF_2

SHIELD

19

200

1/8W

R600

200

1/8W

R602

100uF
16V

C699

100uF
16V

C613

100uF

16V

C609

0 . 1 u F
16V

C604

+3.3V_TU

+3.3V_TU

0

R612

4.7K

R1323

4.7K

R1324

0

R618

READY

20pF
50V

C697

20pF
50V

C698

62pF
50V

C600

62pF
50V

C601

270nH

L603

270nH

L604

1 1             1 3

TUNER

EAX61354901

OPTION : RF AGC

CAN H-NIM/NIM TUNER for EU

close to TUNER

close to TUNER

R2

V_OUT=V_REF(1+R2/R1)

R1