LG Electronics 32LS679C-ZC service manual AUDIO AMPSTA380BWE, LGE Internal Use Only

Page 36
AUDIO AMP(STA380BWE)

AUDIO AMP(STA380BWE)

+24V+24V_AMP

 

L3400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CIS21J121

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3.3V_AMP

 

12

11

10

9

8

7

 

6

5

4

3

 

2

 

1

 

 

 

 

 

 

 

 

 

 

 

C3400

 

C3402

 

 

 

 

NC

NC

NC

NC

NC

NC

 

NC

NC

NC

NC

 

NC

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

0.1uF

 

0.1uF

 

 

 

24

23

22

21

20

19

 

18

17

16

15

 

14

 

13

 

50V

 

50V

 

 

 

 

NC_13

25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C3403

 

 

 

NC_14

26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.1uF

 

 

 

NC_15

27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VDDDIG1

28

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GNDDIG1

29

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FFX3A

30

 

 

IC3400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FFX3B

31

 

 

 

 

 

 

 

+3.3V_Normal

+3.3V_AMP

 

 

EAPD/FFX4A

32

 

 

STA380BW

 

 

 

 

 

 

 

 

 

C3404

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L3401

 

 

 

TWARNEXT/FFX4B

33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.2uF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VREGFILT

34

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLM18PG121SN1D

 

10V

 

 

AGNDPLL

35

 

 

 

 

 

 

 

 

 

49

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THERMAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MCLK

36

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

37

38

39

40

41

42

43

44

45

46

47

48

+3.5V_ST

 

AUD_MASTER_CLK

 

 

 

 

 

 

BICKI

LRCKI

SDI

RESET

PWDN

INTLINE

 

SDA

SCL

SA

TESTMODE

GNDDIG2

VDDDIG2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

GND_REG

 

C3409

11

VDD_REG

0.1uF

16V

10OUT1A

9GND1

8VCC1

7OUT1B

6OUT2A

5VCC2

4 GND2

3 OUT2B

2

VSS_REG

C3408

1

VCC_REG

 

 

0.1uF

 

 

 

16V

[EP]

 

 

 

 

+3.3V_AMP

L3402

10.0uH

R3407

R3408

43

43

C3413 L3403 Manual background 330pF 10.0uH

50V

L3404

10.0uH

C3414

330pF

50V

R3409

R3410

43

43

L3405

10.0uH

 

C3420

 

C3424

 

0.22uF

 

1000pF

C3418

50V

 

50V

0.22uF

 

 

 

50V

C3421

 

C3425

 

0.22uF

 

1000pF

 

50V

 

50V

 

C3422

 

C3426

 

 

 

0.22uF

 

1000pF

C3419

50V

 

50V

0.22uF

 

 

 

50V

C3423

 

C3427

 

0.22uF

 

1000pF

 

50V

 

50V

Manual background SPK_L+

SPEAKER_L

Manual background SPK_L-

Manual background SPK_R+

SPEAKER_R

Manual background SPK_R-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUD_SCK

 

 

 

 

 

 

 

 

 

 

NON_LIPS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUD_LRCK

 

 

 

 

 

 

 

 

 

 

R3412

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUD_LRCH

 

 

 

 

 

 

 

 

 

 

 

 

NON_LIPS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R3401

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10K

 

NON_LIPS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R3402

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NON_LIPS

 

 

 

100

 

 

 

AMP_RESET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R3400

 

 

 

C

 

 

 

 

 

 

 

R3403

0

 

 

 

 

 

 

 

 

 

 

 

 

NON_LIPS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10K

B

 

Q3400

 

C3401

AMP_SDA

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MMBT3904(NXP)

 

1000pF

 

 

 

R3404

 

 

 

 

 

 

 

AMP_MUTE

 

 

 

 

AMP_SCL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E

 

50V

 

 

 

 

OPT

OPT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C3405

C3406

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

33pF

33pF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50V

50V

 

 

 

 

 

 

 

 

LIPS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R3411

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER_DET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C3407

0.1uF

16V

 

 

 

 

+24V_AMP

 

 

 

 

 

 

 

 

 

 

 

 

 

C3411

C3412

C3415

C3416

C3417

 

0.1uF

1uF

1uF

0.1uF

10uF

 

50V

50V

50V

50V

35V

 

 

 

 

 

 

 

 

 

 

 

 

SPK_L+ Manual background

SPK_L- Manual background

SPK_R+ Manual background

SPK_R- Manual background

P3400

WAFER-ANGLE

4

3

2

1

THE Manual background 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 Manual background SYMBOL MARK OF THE SCHEMETIC.

GP4L_S7LR22011/11/16

Manual backgroundAMP_STA380BWEManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual backgroundManual background 34

Copyright © 2012 LG Electronics. Inc. All rights reserved.

LGE Internal Use Only

Only for training and service purposes

 

Page 35 Page 37
Image 36
Page 35 Page 37
Contents CHASSIS LD21B SERVICE MANUALREAD THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comCONTENTS SAFETY PRECAUTIONSSERVICING PRECAUTIONS SPECIFICATIONSAFETY PRECAUTIONS IMPORTANT SAFETY NOTICESERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesIC Remove/Replacement ReplacementSmall-Signal Discrete Transistor Removal/Replacement RemovalSPECIFICATION 4. Model General Specification1. Application range 3. Test methodSymbolrate 4.0Msymbols/s to 7.2Msymbols/s symbolrateDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s DVB-S QPSK 2 ~ 45Msymbol/s5. Video resolutions 2D 5.1. Component Input Y, CB/PB, CR/PR5.2. RGB Input PC 5.3. HDMI InputPC/DTV PCDVIADJUSTMENT INSTRUCTION Boot file Download1. Application Range 2. Designation3.1. ADC Process 3.3. EDID data3.2. EDID Download 7. ADC Calibration4. Total Assembly line process 4.1. Adjustment Preparation3.4 Function Check 4.3. Outgoing condition Configuration 6.1. Signal Table5. HI-POT Test 6. Model name & Serial number D/L7. MAC Address & CI+ key download 6.3. Method & notice7.1 MAC Address GP4LOW7.2 LAN Inspection 7.3. LAN PORT INSPECTIONPING TESTSCREW ASSEMBLY WORKING GUIDE Screw specification and application situationח ͷͲͳͤͤͤͪͥͣ͢͡ ͙;ͤ͛ͽͥͦ͑͟͝ͳͼ͑͝;ΒΔΙΚΟΖ͚ ח ͣ͢ͶͲ ח ͷͲͳͤͨͩͩͣ͑͢͡͡ ͙;ͧ͛ͽ͑͢͡͝ͳͼ͑͝;ΒΔΙΚΟΖ͚BLOCK DIAGRAM RearSide LG2111 AEXPLODED VIEW GP4LS7LR22011.12.01 Copyright 2012 LG Electronics. Inc. All rights reservedto delete CI or gate for for SYSTEM EEPROMNormal Power VDDCNormal DDR3FROM LIPS & POWER B/D PowerDET+3.3VNormal +1.5VDDRIR/LED and control for normal models USB SIDE USB1DIODESUSB2DIODES HDMI RGB-PC / SPDIF THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF ISRS-232C COMMERCIAL/NonOS MODEL OPTION COMMERCIAL MODEL OPTIONFor Comsumer model, use 4PIN Wafer LVDS for large inch S7LR2DIVXMS10 GP4LS7LR22011/06/03 DDR25612IC1201 H5TQ1G63DFR-H9CSerial Flash for SPI boot SFLASHMAINMACRONIXSFLASHMAINWINBOND IC1401-*1 W25Q80BVSSIG Headphone *Option HEADPHONE PHONEHEAD CI Region Option name of this page CISLOT because of Hong Kong10067972-0500LF H/W option ETHERNET GP4LS7LR22011/06/14 ETHERNET21ETHERNET GP4RGLOBALTUNERBLOCK TU2602TU2603 TDSS-G101D TDSN-G301DTU2601 TDSQ-G001DDVB-S2 LNB Part Allegro OptionLNBGP4LS7LR22011/11/02 DVBS27 DCDCGND and AGND are connectedSCART / COMPONENT&COMPSIT FULL SCART / COMPONENT1JK2801 PSC008-01AUDIO AMPSTA380BWE Page Contents of LCD TV Standard Repair Process Contents of LCD TV Standard Repair Process Detail Technical Manual Continue to the next pageError symptom ContentA. Video error LCD TVMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24v outputvoltages of Power Check variousBoard 3.5V,12V,20V or 24V…By using Digital signal level meter By using Diagnostics menu on OSD Menu→ Set up→ Support → Signal Test Signal strength Normal over 50%Signal Quality Normal over 50% → Set-Top-Box, Different maker TV etc A8/ A9 Check color by input -External Input COMPONENT -RGB※ Check Link CableExternal device screen error-Color error Vertical/Horizontal bar, residual image, light spotConnect other external device and cable Check color condition by input -External Input -Component RGBB. Power error Check Power LEDCheck Power On ‘”High” Measure voltage of each output of Power B/DCheck Power Off Mode If Power Off mode is not displayed Check Power B/D voltagePOWEROFFABNORMAL1 POWEROFFCPUABNORMALC. Audio error 24V of PowerCheck user menu Speaker off Check audio B+In case of External Input signal error Check and fix external device Check audio B+ VoltageD. Function error 1. Remote controlR/C operating errorCheck & Repair Check input signal Y Check technical Signal information input? - Fix informationRecognition error Replace Main B/DE. Noise Identify nose typeF. Exterior defect
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