LG Electronics 55LA625C-ZA service manual IC501, NTP-7500L

Page 26

IC501

AMP_RESET

+24V

+24V_AMP

R521

C516

10K

1000pF

+3.3V_Normal

50V

L501

MLB-201209-0120P-N2

50V

L502

+24V_AMP

BLM18PG121SN1D

22000pF

AUD_MASTER_CLK

C517

C501

C502

0 . 1 u F

0 . 1 u F

50V

50V

[ E P ] VDD IO

GND IO

/RESET

PGND1A

OUT1A 2

OUT1A 1

PVDD1 3

PVDD1 2

PVDD1 1

C519

C521

C523

C514

C515

BST1A

0 . 1 u F

0 . 1 u F

10uF

CLK I

50V

50V

35V

10uF

0 . 1 u F

10V

16V

AD

R508

R515

12

12

C506

C510

C512

C504

C508

C530

10uF

10uF

0 . 1 u F

1000pF

10V

0 . 1 u F

10V

16V

390pF

50V

16V

48

47

46

45

44

43

42

41

40

39

38

37

50V

C503

C531

AGND_PLL

OUT1B_2

390pF

100pF

1

36

50V

50V

R509

R513

AVDD_PLL

OUT1B_1

R505

2

THERMAL

35

12

12

3.3K

DVDD_PLL

3

34

PGND1B

49

C526

LF

BST1B

22000pF

4

IC501

33

50V

DGND_PLL

5

32

VDR1

NTP-7500L

DELETE

GND_1

6

31

VCC_5

C511

10uF

C513

10V

0 . 1 u F

DGND

AGND

16V

7

30

DVDD

8

29

VDR2

C528

C529

C534

SDATA

BST2A

9

28

1uF

1uF

1uF

AUD_LRCH

25V

25V

25V

WCK

PGND2A

10

27

C527

AUD_LRCK

BCK

OUT2A_2

22000pF

11

26

50V

AUD_SCK

SDA

OUT2A_1

R503

100

12

25

AMP_SDA

R504

100

13

14

15

16

17

18

19

20

21

22

23

24

AMP_SCL

+3.5V_ST

C507

C509

33pF

33pF

L505

10.0uH

L506

10.0uH

C535

0 . 4 7 u F

50V

C537

0 . 1 u F 50V

C538

0 . 1 u F 50V

SPK_L+

R516

4.7K

SPEAKER_L

R517

4.7K

SPK_L-

SPK_L+

SPK_L-

SPK_R+

SPK_R-

WAFER-ANGLE

4

3

2

1

P501

50V

50V

SCL

/FAULT

MONITOR0

MONITOR1

MONITOR2

BST2B

PGND2B

OUT2B 1

OUT2B 2

PVDD2 1

PVDD2 2

PVDD2 3

+24V_AMP

R510

R514

R502

12

12

R520

10K

R506

10K

C532

C

100

C505

390pF

50V

R501

1000pF

B

Q501

C520

C522

C524

AMP_MUTE

50V

C533

MMBT3904(NXP)

0 . 1 u F

0 . 1 u F

10uF

10K

390pF

E

50V

50V

35V

50V

C518

22000pF

R511

R512

50V

12

12

R522

0

POWER_DET

DELETE

L503

10.0uH

L504

10.0uH

C536

0 . 4 7 u F

50V

C539

0 . 1 u F

50V

C540

0 . 1 u F

50V

SPK_R+

R518

4.7K

SPEAKER_R

R519

4.7K

SPK_R-

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.

Copyright © 2013 LG Electronics. Inc. All rights reserved. Only for training and service purposes

2013 S7LR2

2012 . 11 . 12

POWER

5

LGE Internal Use Only

Image 26

Contents LED TV SERVICE MANUALREAD THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL 55LA625C 55LA625C-ZALG Electronics. Inc. All rights reserved Only for training and service purposesCopyright LGE Internal Use OnlyBefore returning the receiver to the customer SAFETY PRECAUTIONSGeneral Guidance Leakage Current Cold CheckAntenna Cold CheckSERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesSmall-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Removal1. Application range SPECIFICATION4. Model General Specification 3. Test methodGuard IntervalBitrateMbit/s Symbolrate 4.0Msymbols/s to 7.2Msymbols/sDVB-T 1/4, 1/8, 1/16, 1/325.2. RGB Input PC - HD Model 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 5.3. RGB Input PC - FHD Model5.3. HDMI InputPC/DTV PCDVI2. Designation ADJUSTMENT INSTRUCTION1. Application Range 3. Main PCB check process3.2. EDID Download After downloading, have to adjust Tool Option again3.1. ADC Process 3.3. EDID data3.4 Function Check 4. Total Assembly line process4.1. White Balance adjustment 6.1. Signal Table 5. GND and HI-POT Test6. Model name & Serial number D/L 4.5. Outgoing condition Configuration7.1. Communication Prot connection 7. CI+ key download6.3. Method & notice 7.2. CI+ Key Download8.2. IR OUT 8. Check Commercial Features8.1. External speaker8OHM, 1W, Single-End 2. Digital TV Video TROUBLE SHOOTING GUIDE1. Check the booting Voltage 3. Analog TV Video 4. AV Video5. RGB Video 6. HDMI Video7. Audio of All iput 8. TV Audio9. AV Audio 10. RGB AudioTuner DVB- T/C BLOCK DIAGRAMS7LR2 LGE211A-T8 EXPLODED VIEW Copyright 2013 LG Electronics. Inc. All rights reserved 2013 S7LR22012 . 11 VDDC SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Normal+1.5VDDR FROM LIPS & POWER B/DPowerDET +3.3VNormal780 mAIC501 NTP-7500LTHE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION CONTROL IR & LED30Pin LVDS Connector LVDS51Pin LVDS Connector For FHD 60Hz FOR FHD REVERSE10bit Change in S7LRHDMI2 HDMI EEPROMHDMI1 For CECRS232C RS - 232CSIDE USB HEADPHONERGB PC PC AUDIODDR13331GHYNIX S7LRDIVXMS10DDR256 EAN61828901SFLASH S c a r t REAR COMPONENT PHONE JACKF u l l SCART AUDIO MUTEEXTSPK EXTSPEAKERAMPSPEAKER OUT JACK IC1800Option name of this page CI SLOT because of Hong Kong CI POWER ENABLE CONTROLCI Region PCMCITU2603 GP4RGLOBALTUNERBLOCKTU2602 TDSS-G101D