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LG Electronics 3450-ZC, 42LS340S, 42LS340T, 42LS3450-ZC AUDIO AMP(STA380BWE)

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THERMAL

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.

2011/11/16

AMP_STA380BWE 34

GP4L_S7LR2

SPK_R-

+3.3V_AMP

R3402

100

NON_LIPS

C3421

0.22uF

50V

+3.3V_AMP

C3420

0.22uF

50V

C3405

33pF

50V

OPT

R3408

43

C3406

33pF

50V

OPT

R3411

0

LIPS

AMP_SCL

C3409

0.1uF

16V

R3407

43

L3402

10.0uH

SPK_R+

+3.3V_Normal

AMP_RESET

L3403

10.0uH

C3401

1000pF

50V

C3404

2.2uF

10V

C3418

0.22uF

50V

R3404 0

AMP_SDA

P3400

WAFER-ANGLE

1

2

3

4

SPK_L-

SPK_R+

C3408

0.1uF

16V

SPK_L+

AUD_LRCH

R3401

10K

NON_LIPS

SPK_R-

L3401

BLM18PG121SN1D

C3402

0.1uF

50V

R3403 0

L3405

10.0uH

R3400

10K

NON_LIPS

SPK_L+

C3423

0.22uF

50V

+24V_AMP

AUD_MASTER_CLK

AUD_LRCK

SPK_L-

C3403

0.1uF

16V

C3407

0.1uF

16V

AUD_SCK

C3417

10uF

35V

C3400

0.1uF

50V

C3411

0.1uF

50V

R3410

43

C3422

0.22uF

50V

+24V

C3416

0.1uF

50V

+3.3V_AMP

C3419

0.22uF

50V

L3404

10.0uH

+3.5V_ST

Q3400

MMBT3904(NXP)

NON_LIPS

E

B

C

R3409

43

AMP_MUTE

+24V_AMP

C3413

330pF

50V

C3414

330pF

50V

C3426

1000pF

50V

C3427

1000pF

50V

C3425

1000pF

50V

C3424

1000pF

50V

C3415

1uF

50V

C3412

1uF

50V

L3400

CIS21J121

IC3400

STA380BW

1 VCC_REG

2 VSS_REG

3 OUT2B

4 GND2

5 VCC2

6 OUT2A

7 OUT1B

8 VCC1

9 GND1

10 OUT1A

11 VDD_REG

12 GND_REG

13 NC_1

14 NC_2

15 NC_3

16 NC_4

17 NC_5

18 NC_6

19 NC_7

20 NC_8

21 NC_9

22 NC_10

23 NC_11

24 NC_12

25NC_13 26NC_14 27NC_15 28VDDDIG1 29GNDDIG1 30FFX3A 31FFX3B 32EAPD/FFX4A 33TWARNEXT/FFX4B 34VREGFILT35AGNDPLL 36MCLK

37

BICKI

38

LRCKI

39

SDI

40

RESET

41

PWDN

42

INTLINE

43

SDA

44

SCL

45

SA

46

TESTMODE

47

GNDDIG2

48

VDDDIG2

49

[EP]

POWER_DET

R3412

10K

NON_LIPS

SPEAKER_L

AUDIO AMP(STA380BWE)

SPEAKER_R

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

Only for training and service purposes

LGE Internal Use Only

Contents

Main Page SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE General Guidance Before returning the receiver to the customer, Leakage Current Cold Check(Antenna Cold Check) SERVICING PRECAUTIONS Page SPECIFICATION 1. Application range 2. Requirement for Test 3. Test method 4. Model General Specification Page 5. Video resolutions (2D) 5.1. Component Input (Y, CB/PB, CR/PR) 5.2. RGB Input (PC) - LS35/LS34/CS46 series models are not supported. 5.3. HDMI Input(PC/DTV) ADJUSTMENT INSTRUCTION 1. Application Range 2. Designation 3. Main PCB check process * Boot file Download 3.1. ADC Process 3.2. EDID Download 3.3. EDID data 3.4 Function Check 4. Total Assembly line process 4.1. Adjustment Preparation * Auto-control interface and directions * Manual W/B process using adjust Remote control. 4.2. EYE-Q function check 5. HI-POT Test 5.1. HI-POT auto-check preparation 5.2. HI-POT auto-check 5.3. Checkpoint 6. Model name & Serial number D/L 7. MAC Address & CI+ key download GP4_LOW 7.1 MAC Address 7.1.1 Equipment & Condition 7.1.2 Download method 7.2 LAN Inspection 7.3. LAN PORT INSPECTION(PING TEST) SET PC Except of LS3500/CS460 BLOCK DIAGRAM Applied Model : **LM5800, **LS5600, **LS3500, **CS460, **LS3400 Applied Model : **LM580T, **560T, **LS350T, **CS460T, **LS340T TDSN TDSN- G301D G301D Except of LS350T/CS460T Applied Model : **LM580S, **560S, **LS350S, **CS460S, **LS340T TDSQ TDSQ- G001D G001D Except of LS350S/CS460S EXPLODED VIEW FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS POWER_LARGE 2012/01/13 4 IC407 AP7173-SPG-13 HF(DIODES) FROM LIPS & POWER B/D Power_DET S7LR core 1.2V volt +1.5V_DDR ERROR_OUT is used for lamp(CCFL/EEFL) models. In other words, LED models need not use. LVDS for large inch [51Pin LVDS Connector] (For FHD 60Hz) FOR FHD REVERSE(8bit) MIRROR Pol-change Shift FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS K4B1G1646G-BCH9 H5TQ1G63DFR-H9C NT5CB64M16DP-CF H5TQ1G63DFR-H9C Serial Flash for SPI boot FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS CI TS INPUT CI POWER ENABLE CONTROL CI HOST I/F * Option name of this page : CI_SLOT CI Region (because of Hong Kong) CLOSE TO MSTAR CI DETECT GP4L_S7LR2 ETHERNET ETHERNET * H/W option : ETHERNET FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2011/08/17 23 IR/LED and control for on.y 12 sub without IR-OUT. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2011/12/23 TUNER_EU 26 +2.5V_TU Vo=0.8*(1+R2/R1) GP4R_GLOBAL_TUNER_BLOCK close to TUNER ERROR & VALID PIN Close to TUNER close to TUNER DVB-S2 LNB Part Allegro PCB_GND and A_GND are connected DCDC_GND and A_GND are connected in pin#27 Input trace widths should be sized to conduct at least 3A DCDC_GND and A_GND are connected AUDIO AMP(STA380BWE) FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS AR101 22 LOCAL DIMMING *Option : HDCP_EEPROM HDCP EEPROM EEPROM FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2011.08.24 POWER,IN/OUT,H/W OPT 51 MODEL_OPT_2 MODEL_OPT_3 USB (SIDE) USB1_DIODES FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS HDMI_2EA(NON SIDE HDMI) 2011/08/12 53 HDMI_2EA(NON SIDE HDMI) HDMI_2 HDMI_1 For CEC FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Full Scart COMPONENT SCART AUDIO OUT RS-232C 4PIN MSTART DEBUG_4PIN Page Contents of LCD TV Standard Repair Process First of all, Check whether there is SVC Bulletin in GCSC System for these model. Contents of LCD TV Standard Repair Process Detail Technical Manual Continue to the next page date Revised date 1/14 symptom A. Video error No video/ Normal audio First of all, Check whether all of cables between board is inserted properly or not. (Main B/DPower B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) A4 A5 A6 A5 A6 Color error A7 A8/ A9 A10 date Revised date 5/14 symptom 2012. 01 .14 Vertical/Horizontal bar, residual image, light spot Vertical / Horizontal bar, residual image, light spot, external device color error A10 External device screen error-Color error device and cable B. Power error Off when on, off while viewing, power auto on/off A13 A14 date Revised date 8/14 C. Audio error A15 A16 abnormal audio/discontinuation/noise is same after Check input signal compared to No audio C. Audio error A16 Wrecked audio/ discontinuation/noise date Revised date 10/14 D. Function error 1. Remote control(R/C) operating error A4 D. Function error E. Noise F. Exterior defect