LG Electronics CS26460T-ZA, 26CS460T AUDIO AMPSTA380BWE, GP4LS7LR22011/11/16 AMPSTA380BWE

Page 29
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 GP4L_S7LR22011/11/16 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

 

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Page 28 Page 30
Contents SERVICE MANUAL CHASSIS LD21CREAD THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comSAFETY PRECAUTIONS CONTENTSSERVICING PRECAUTIONS SPECIFICATIONIMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSReplacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Removal4. Model General Specification SPECIFICATION1. Application range 3. Test methodsymbolrate Symbolrate 4.0Msymbols/s to 7.2Msymbols/sDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s DVB-S QPSK 2 ~ 45Msymbol/s5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR PCDVI 5.3. HDMI InputPC/DTVBoot file Download ADJUSTMENT INSTRUCTION1. Application Range 2. Designation3.3. EDID data 3.1. ADC Process3.2. EDID Download 7. ADC Calibration3.4 Function Check 4. Total Assembly line process4.1. Adjustment Preparation 4.2. EYE-Q function check 4.5. Outgoing condition Configuration4.3. 3D function test 4.4. IR emitter inspection5. HI-POT Test 6.1. Signal Table6. Model name & Serial number D/L 5.1. HI-POT auto-check preparation7.1 MAC Address 7. MAC Address & CI+ key download7.2 LAN Inspection 7.3. LAN PORT INSPECTIONPING TESTSide RearLG2111 A IC101LS350T/CS460T Applied Model **LM580T, **560T, **LS350T, **CS460TTDSN G301DG001D 560S, **LS350S, **CS460SLS350S/CS460S EXPLODED VIEW PowerDET FROM LIPS & POWER B/D+3.3VNormal +1.5VDDR51Pin LVDS Connector For FHD 60Hz LVDS for large inch30Pin LVDS Connector FOR FHD REVERSE10bitGP4LS7LR22011/06/03 DDR25612 S7LR2DIVXMS10IC1201 H5TQ1G63DFR-H9CGP4LS7LR2 Serial Flash for SPI boot2011/06/03 SFLASH1MB10067972-0500LF CI RegionOption name of this page CISLOT because of Hong Kong ETHERNET H/W option ETHERNETGP4LS7LR22011/06/14 ETHERNET21 IR/CONTROLW/OIROUT IR/LED and control for on.y ’12 sub without IR-OUTTU2602TU2603 TDSS-G101D TDSN-G301D GP4RGLOBALTUNERBLOCKTU2601 TDSQ-G001DOptionLNB DVB-S2 LNB Part AllegroGP4LS7LR22011/11/02 DVBS27 DCDCGND and AGND are connectedGP4LS7LR22011/11/16 AMPSTA380BWE AUDIO AMPSTA380BWENAND FLASH MEMORY VDDC Normal PowerNormal DDR3USB1DIODES USB SIDEHDMI1 HDMI2EANON SIDE HDMIFor CEC HDMI2COMPONENT Full ScartSCART AUDIO OUT SCART AUDIO MUTEGP4LS7LR22011/09/26 RS-232C 4PINMSTAR DEBUG4PIN MSTART DEBUG4PIN2011/09/05 Page Contents of LCD TV Standard Repair Process Continue to the next page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom ContentLCD TV A. Video errorMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24v outputCheck various voltages of PowerBoard 3.5V,12V,20V or 24V…Signal Quality Normal over 50% By using Digital signal level meter By using Diagnostics menu on OSDMenu→ Set up→ Support → Signal Test Signal strength Normal over 50% → Set-Top-Box, Different maker TV etc Check color by input -External Input COMPONENT -RGB A8/ A9※ Check Link CableVertical/Horizontal bar, residual image, light spot External device screen error-Color errorConnect other external device and cable Check color condition by input -External Input -Component RGBCheck Power LED B. Power errorCheck Power On ‘”High” Measure voltage of each output of Power B/DIf Power Off mode is not displayed Check Power B/D voltage Check Power Off ModePOWEROFFABNORMAL1 POWEROFFCPUABNORMAL24V of Power C. Audio errorCheck user menu Speaker off Check audio B+Check audio B+ Voltage In case of External Input signal error Check and fix external deviceCheck & Repair D. Function error1. Remote controlR/C operating error Y Check technical Signal information input? - Fix information Check input signalRecognition error Replace Main B/DIdentify nose type E. NoiseF. Exterior defect
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