LG Electronics 55LA625C-ZA Extspeakeramp, Speaker Out Jack, 2013 S7LR2, 2012 . 11, Extspk, IC1800

Page 35
EXT_SPEAKER_AMP

EXT_SPEAKER_AMP

 

 

 

 

 

 

 

 

 

+12V

 

 

 

 

 

 

 

 

 

 

 

L1802

EXT_SPK

 

 

 

 

 

 

 

 

 

 

EXT_SPK

 

 

 

 

 

 

 

 

 

 

L1803

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLM18PG121SN1D

 

 

 

 

 

 

 

 

 

 

 

C1806

 

 

C1809

C1810

C1811

 

 

 

 

 

 

0 . 1 u F

 

 

 

 

 

 

 

 

16V

 

 

10uF

10uF

0 . 1 u F

 

 

 

 

 

 

EXT_SPK

 

25V

25V

16V

 

 

 

 

EXT_SPK

 

 

 

 

OPT

EXT_SPK EXT_SPK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1803

 

 

 

 

 

 

 

 

 

AMP_RESET

 

100

 

EXT_SPK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC1800

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3.5V_ST

TPA3124D2PWPR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PVCCL_1

1

PGNDL_2

 

 

 

 

 

EXT_SPK

 

 

R1802

 

24

 

 

 

 

 

EXT_SPK

 

10K

 

 

 

 

 

 

 

 

C1816

 

 

 

 

 

 

 

 

 

100uF

R1800

 

EXT_SPK

 

 

 

 

 

 

 

 

 

SD

 

PGNDL_1

 

 

 

 

 

25V

100

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

23

 

EXT_SPK

 

EXT_SPK

EXT_SPK_L

R1801

 

C

 

 

 

 

L1804

EXT_SPK

EXT_SPK

 

OPT

PVCCL_2

 

LOUT

 

22.0uH

R1808

C1812

C1814

10K

B

Q1800

 

 

1uF

0 . 4 7 u F

3

 

 

 

4.7K

SUB_AMP_MUTE

 

MMBT3904(NXP)

 

22

 

 

 

50V

50V

 

 

 

 

C1807

 

 

 

OPT

 

 

 

 

 

 

 

 

 

 

 

 

E

MUTE

 

BSL

0 . 2 2 u F

 

 

EXT_SPK

EXT_SPK EXT_SPK

 

 

4

50V

 

 

 

 

 

 

21

 

 

R1809

C1813

C1815

 

 

C1800

 

 

 

EXT_SPK

L1805

1uF

0 . 4 7 u F

 

 

 

 

 

4.7K

 

 

1uF

 

 

 

 

50V

50V

 

 

LIN

 

AVCC_2

 

22.0uH

 

 

 

10V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXT_AMP_L

 

EXT_SPK

 

5

20

 

EXT_SPK

 

 

EXT_SPK_R

 

 

 

 

 

 

 

 

 

 

C1817

 

 

EXT_SPK

 

 

 

 

 

 

 

 

 

 

RIN

 

AVCC_1

 

 

 

 

 

100uF

EXT_AMP_R

 

 

 

6

19

 

 

 

 

 

25V

 

 

C1801

 

 

 

 

 

R1804

 

 

EXT_SPK

 

 

1uF

BYPASS

 

GAIN0

 

 

10K

R1806

 

 

 

 

10V

7

 

 

OPT

 

 

 

 

 

18

 

 

10K

 

 

 

 

EXT_SPK

 

 

 

 

 

 

OPT

 

 

 

 

C1804

AGND_1

8

GAIN1

 

 

 

 

 

 

 

 

1uF

 

17

 

 

 

 

 

 

 

 

50V

 

 

 

 

 

R1805

 

 

 

 

 

 

AGND_2

 

BSR

 

 

R1807

 

 

 

 

 

9

EXT_SPK

 

10K

10K

 

 

 

 

 

 

16

 

EXT_SPK EXT_SPK

 

 

 

 

 

 

 

 

C1808

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PVCCR_1

 

ROUT

0 . 2 2 u F

 

 

 

 

 

 

 

 

10

50V

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

VCLAMP

11

PGNDR_2

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

EXT_SPK

 

 

 

 

 

 

 

 

 

 

 

C1802

PVCCR_2

12

PGNDR_1

 

 

 

 

 

 

 

 

1uF

 

13

 

 

 

 

 

 

 

 

50V

 

 

 

 

 

 

 

 

 

 

 

C1803

C1805

 

 

 

 

 

 

 

 

 

 

10uF 0 . 1 u F

 

 

 

 

 

 

 

 

 

 

25V

16V

 

 

 

 

 

 

 

 

 

 

EXT_SPK

EXT_SPK

 

 

 

 

 

 

 

 

SPEAKER OUT JACK

JK1800

 

 

 

 

PEJ034 - 01

 

 

 

 

EXT_SPK

E_SPRING

 

 

 

3

 

 

 

 

 

 

 

 

 

OPT

 

EXT_SPK_R

 

 

 

 

 

 

C1818

R1811

 

 

 

100pF

 

 

 

10K

 

 

 

50V

 

 

 

EXT_SPK

 

 

 

4

R_SPRING

 

 

 

 

 

 

 

5

T_SPRING

 

 

 

 

 

 

EXT_SPK_L

 

 

 

 

7B

B_TERMINAL2

 

OPT

R1812

 

 

C1819

 

 

 

 

 

+3.3V_Normal

100pF

10K

6B

T_TERMINAL2

50V

EXT_SPK

 

 

 

 

 

 

 

EXT_SPK

 

 

 

 

R1813

 

 

 

 

68K

R1815

 

 

 

 

 

 

 

 

100

 

 

 

 

EXT_SPK

EXT_SPK_DET

 

 

 

 

 

 

R1814

 

 

 

 

4.7K

 

 

 

 

OPT

 

 

THE IC1800SYMBOL 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.

 

 

 

 

 

 

 

2013 S7LR2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2012 . 11 . 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXT_SPK

 

 

 

 

 

 

 

 

 

 

 

18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copyright © 2013 LG Electronics. Inc. All rights reserved.

LGE Internal Use Only

Only for training and service purposes

 

Image 35
Contents MODEL 55LA625C 55LA625C-ZA SERVICE MANUALREAD THE SAFETY PRECAUTIONS IN THIS MANUAL LED TVLGE Internal Use Only Only for training and service purposesCopyright LG Electronics. Inc. All rights reservedLeakage Current Cold CheckAntenna Cold Check SAFETY PRECAUTIONSGeneral Guidance Before returning the receiver to the customerElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSRemoval IC Remove/ReplacementReplacement Small-Signal Discrete Transistor Removal/Replacement3. Test method SPECIFICATION4. Model General Specification 1. Application range1/4, 1/8, 1/16, 1/32 Symbolrate 4.0Msymbols/s to 7.2Msymbols/sDVB-T Guard IntervalBitrateMbit/s5.3. RGB Input PC - FHD Model 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 5.2. RGB Input PC - HD ModelPCDVI 5.3. HDMI InputPC/DTV3. Main PCB check process ADJUSTMENT INSTRUCTION1. Application Range 2. Designation3.3. EDID data After downloading, have to adjust Tool Option again3.1. ADC Process 3.2. EDID Download3.4 Function Check 4. Total Assembly line process4.1. White Balance adjustment 4.5. Outgoing condition Configuration 5. GND and HI-POT Test6. Model name & Serial number D/L 6.1. Signal Table7.2. CI+ Key Download 7. CI+ key download6.3. Method & notice 7.1. Communication Prot connection8.2. IR OUT 8. Check Commercial Features8.1. External speaker8OHM, 1W, Single-End 2. Digital TV Video TROUBLE SHOOTING GUIDE1. Check the booting Voltage 4. AV Video 3. Analog TV Video6. HDMI Video 5. RGB Video8. TV Audio 7. Audio of All iput10. RGB Audio 9. AV AudioTuner DVB- T/C BLOCK DIAGRAMS7LR2 LGE211A-T8 EXPLODED VIEW Copyright 2013 LG Electronics. Inc. All rights reserved 2013 S7LR22012 . 11 Normal SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS VDDC+3.3VNormal780 mA FROM LIPS & POWER B/DPowerDET +1.5VDDRNTP-7500L IC501CONTROL IR & LED THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETICFOR FHD REVERSE10bit Change in S7LR LVDS51Pin LVDS Connector For FHD 60Hz 30Pin LVDS ConnectorFor CEC HDMI EEPROMHDMI1 HDMI2RS - 232C RS232CPC AUDIO HEADPHONERGB PC SIDE USBEAN61828901 S7LRDIVXMS10DDR256 DDR13331GHYNIXSFLASH SCART AUDIO MUTE REAR COMPONENT PHONE JACKF u l l S c a r tIC1800 EXTSPEAKERAMPSPEAKER OUT JACK EXTSPKPCMCI CI POWER ENABLE CONTROLCI Region Option name of this page CI SLOT because of Hong KongTDSS-G101D GP4RGLOBALTUNERBLOCKTU2602 TU2603