LG Electronics 32LT380C/380H-ZA P4RGLOBALTUNERBLOCK, SI2176ATSC1INPUTH, SI2156DVB1INPUTH

Page 30
P4R_GLOBAL_TUNER_BLOCK

P4R_GLOBAL_TUNER_BLOCK

 

 

+3.3V_TU

 

 

 

 

 

 

 

 

 

 

 

 

R1402

R1403

 

 

 

 

 

 

 

 

 

 

 

 

 

100K

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

TUNER_RESET

 

+3.3V_TU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1404

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 . 1 u F

 

 

 

 

 

 

 

 

 

 

 

 

 

16V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1407

R1408

 

 

 

 

 

 

 

 

 

 

 

 

 

1K

1K

 

 

 

 

 

 

 

TU1400

 

 

R1405

33

 

 

 

 

 

 

 

 

 

 

TDSS-G101D

 

 

 

 

 

TU_SCL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SI2176_DVB_1INPUT_H

 

 

R1406

33

 

 

 

TU_SDA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1401

 

 

 

OPT

OPT

 

 

 

 

 

 

 

 

 

18pF

C1405

 

 

C1411

C1412

 

 

 

 

 

 

 

 

 

 

 

20pF

20pF

 

 

 

 

 

 

 

 

 

50V

18pF

 

 

 

 

 

 

 

 

 

 

 

 

 

50V

50V

 

 

 

 

 

 

 

 

 

 

50V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3.3V_TU

 

 

 

 

 

 

 

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RESET

 

OPT

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1402

C1407

C1409

 

 

 

 

 

+3.3V_TU

 

 

 

SCL

 

10uF

100pF

0 . 1 u F

 

 

 

 

 

 

 

 

 

6.3V

50V

16V

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SDA

 

 

 

 

 

 

 

 

 

 

NON_ASIA_TU

 

 

 

 

 

 

 

 

 

 

 

 

R1413

 

 

 

4

c l o s e t o t h e t u n e r p i n

 

 

 

 

 

OPT

470

NON_ASIA_TU

 

 

 

 

 

 

 

 

 

 

 

+3.3V

 

 

 

 

 

 

 

 

 

R1410

 

R1415

 

5

 

close to TUNER

 

 

 

 

 

0

 

82

 

TU_SIF

 

 

 

 

 

NON_ASIA_TU

 

 

 

 

SIF

 

NON_ASIA_TU

 

 

 

 

 

 

E

 

 

 

 

 

 

 

 

 

R1426

 

 

 

 

6

 

C1400

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+1.8V

 

0 . 1 u F

16V

 

 

 

 

 

NON_ASIA_TU

B

NON_ASIA_TU

 

 

 

 

 

 

 

 

C1420

 

R1409

 

Q1400

 

 

7

 

 

 

 

 

 

 

4.7K

 

C MMBT3906(NXP)

 

 

C1400-*1

 

 

 

10pF

 

 

 

 

 

 

 

 

 

 

 

50V

 

 

 

 

 

 

 

CVBS

 

0

 

 

 

 

 

 

 

 

 

 

 

 

ASIA_TU

 

 

 

ASIA_TU

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IF_AGC

 

 

 

 

+1.2V/+1.8V_TU

 

ASIA_TU

 

 

 

+3.3V_TU

 

 

 

 

 

 

 

R1421

 

 

 

9

 

 

 

 

 

 

 

390

 

 

 

 

 

 

DIF[P]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

C1406

C1408

C1410

 

 

 

 

 

 

 

 

 

 

 

100pF

0 . 1 u F

100uF

 

 

 

 

 

 

R1416

 

R1417

DIF[N]

 

50V

16V

16V

 

 

 

NON_ASIA_TU

 

 

220

 

220

 

 

 

 

 

 

 

 

 

NON_ASIA_TU

 

NON_ASIA_TU

11

 

 

 

 

 

 

 

 

R1427

OPT

 

 

 

 

 

 

 

 

 

 

 

 

 

0

R1411

0

 

 

TU_CVBS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

R1404

 

 

 

 

 

 

 

NON_ASIA_TU

 

E

 

 

100

IF_AGC_MAIN

 

C1421

 

R1424

R1412

0

 

 

NON_ASIA_TU

 

C1403

 

 

10pF

ASIA_TU

390

 

 

B

 

 

 

 

 

 

 

50V

ASIA_TU

 

R1414

 

Q1401

 

0 . 1 u F

s h o u l d b e g u a r d e d b y g r o u n d

 

ASIA_TU

R1423

 

 

1K

 

 

MMBT3906(NXP)

SHIELD

 

2K

 

 

 

C

16V

 

 

 

 

 

 

 

 

OPT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1422

R1425

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

 

 

 

 

 

 

R1400

 

 

 

 

 

 

ASIA_TU

ASIA_TU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

IF_P_MSTAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1401

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

IF_N_MSTAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C l o s e t o t h e t u n e r

 

 

 

 

 

 

 

 

 

 

 

 

1 . s h o u l d b e g u a r d e d

b y g r o u n d

2 . N o v i a o n b o t h o f t h e m

3 . S i g n a l W i d t h > =

1 2 m i l s

S i g n a l t o S i g n a l W i d t h = 1 2 m i l s

Ground Width >= 24mils

TUNER MULTI-OPTION

 

+3.3V_TU

 

 

 

 

 

 

 

 

 

 

+3.3V_Normal

 

 

 

 

 

 

 

 

 

 

 

 

L1400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CIS21J121

 

 

 

 

 

 

 

 

 

60mA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1414

 

 

 

C1415

 

 

 

C1418

 

 

 

C1419

 

 

 

 

 

 

 

22uF

 

 

 

0 . 1 u F

 

 

 

22uF

 

 

 

0 . 1 u F

 

 

 

 

 

 

 

10V

 

 

 

16V

 

 

 

10V

 

 

 

16V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3.3V_TU

 

 

 

 

 

+1.2V/+1.8V_TU

 

IC1400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AZ1117BH-1.8TRE1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN

 

 

 

 

 

OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

2

 

 

 

 

 

 

 

 

 

 

 

 

 

C1413

 

 

 

1

 

 

 

 

 

 

R1419

 

 

 

R1420

 

 

 

 

 

 

 

 

 

 

 

 

0 . 1 u F

 

 

 

 

 

 

ADJ/GND

1

 

 

 

 

 

 

 

 

16V

 

 

 

 

 

 

 

 

 

 

1/10W

150

 

 

 

 

 

 

 

 

 

 

C1416

 

 

 

 

 

 

 

C1417

 

 

OPT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 . 1 u F

 

 

 

 

 

 

10uF

 

 

 

 

 

 

 

 

 

 

16V

 

 

 

 

 

 

10V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SI2176_ATSC_1INPUT_H

TU1400-*1 TDSS-H101F

NC

1

RESET

2

SCL

3

SDA

4

+B1[3.3V]

5

SIF

6

+B2[1.8V]

7

CVBS

8

IF_AGC

9

DIF[P]

10

DIF[N]

11

12

SHIELD

SI2156_DVB_1INPUT_H

TU1400-*2 TDSS-G201D

NC_1

1

RESET

2

SCL

3

SDA

4

+B1[3.3V]

5

NC_2

6

+B2[1.8V]

7

NC_3

8

IF_AGC

9

DIF[P]

10

DIF[N]

11

12

SHIELD

THE SI2176_ATSC_1INPUT_HSYMBOL 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.

EMEA INTERACTIVE

 

 

 

 

 

 

 

GP4_MSTAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2011 . 08 . 21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUNER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 4

2 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

LGE Internal Use Only

Only for training and service purposes

 

Page 29 Page 31
Image 30
Page 29 Page 31
Contents http//eic.lgservice.com READ THE SAFETY PRECAUTIONS IN THIS MANUALhttp//aic.lgservice.com http//biz.lgservice.comSERVICING PRECAUTIONS CONTENTSSAFETY PRECAUTIONS SPECIFICATIONSAFETY PRECAUTIONS IMPORTANT SAFETY NOTICESERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesSmall-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Removal1. Application range SPECIFICATION4. Model General Specification 3. Test methodAnalogD-SUB 15PIN RGB InputRGB-PC HDMI1-DTV/DVI5. Video resolutions 2D 5.1. Component Input Y, CB/PB, CR/PR5.2. RGB Input PC 5.3. HDMI InputPC/DTV PCDVIAfter downloading, have to adjust Tool Option again ADJUSTMENT INSTRUCTIONBoot file Download 1. Application Range3.1. ADC Process 4. Total Assembly line process4.1. Adjustment Preparation 3.2. Function Check4.3 DDC EDID Write HDMI 256Byte 4.4. EDID data4.2. DDC EDID Write RGB 128Byte Manual W/B process using adjust Remote control4.6.1. HI-POT auto-check preparation 4.5. Outgoing condition Configuration4.6. HI-POT Test 4.6.2. HI-POT auto-check5.2. Comand Set 5.1. Signal Table5. Model name & Serial number D/L 5.3. Method & notice6.1. Download Procedure 6. CI+ Key Download methodCI+ Key Value All rights reserved BLOCK DIAGRAMS7LR HalfEXPLODED VIEW 2011 . 08 EMEA INTERACTIVEGP4MSTAR Copyright 2012 LG Electronics. Inc. All rights reservedOLED Step Up regulator 3 . 3V to 5VMAX 250mA THERMAL+1.5VDDR FROM LIPS & POWER B/DPowerDET +3.3VNormalIC501 NTP-7500LCONTROL IR & LED For FHD 60/120Hz 51Pin LVDS Connector30Pin LVDS Connector For HD 60HzNormal MIRROR Pol - changeHDMI2 HDMI1For CEC SIDEHDMI0 . 3 3 u F RGB/SPDIF/PC/HP/USB USBDIODESS7LRDIVXMS10 IC1300-*1 IC1300MX25L8006EM2I-12G W25Q80BVSSIGP4RGLOBALTUNERBLOCK SI2176ATSC1INPUTHSI2156DVB1INPUTH IC1501 LGDT1001PILG1001 A2 Full Scart/ Comp1 EXTSPKCONTROL/DEBUG UART/I2C SWITCHEXTSPK AMP EXTSPK OUTEXTERNALPOWER OUT 5V/12V REAL TIME CLOCKRTCCI Region Option name of this page CI SLOT because of Hong KongSMD GASKET Page Contents of LCD TV Standard Repair Process 1. Trouble ShootingLCD TV A. Video errorMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24V,12V,3.5V outputNo Video voltages of PowerCheck various BoardBy using Diagnostics menu on OSD Menu→Setup→Manual Tuning A. Picture ProblemBy using Digital signal level meter Signal strength Normal over 30% Signal Quality Normal over 30%and replace Check color by input -External Input COMPONENT -RGB※ Check Link CableVertical/Horizontal bar, residual image, light spot Connect other external device and cableExternal device screen error-Color error Check color condition by input -External Input -Component RGBCheck Power LED B. Power errorStand-By Red Operating white Check Power On ‘”High”POWEROFFABNORMAL1 Check Power Off Starusinstart menuIf Power Off mode is not displayed Check Power B/D voltage POWEROFFCPUABNORMALCheck user menu Speaker off C. Audio errorPower Board Check audio B+In case of External Input signal error Check and fix external device Check audio B+ Voltage 20V orCheck & Repair Cable connection Connector solder D. General Function Problem1. Remote controlR/C operating error Output signalY Check technical Signal information input? - Fix information D. Function errorCheck input signal S/W VersionE. Noise Identify nose typeF. Exterior defect When the signal is strong, use the attenuator -10dB, -15dB, -20dB etc A. Video errorVideo error, video lag/stopMENU -Æ red keycustomer support -Æ signal test -Æ select channel Standard Repair Process Detail Technical ManualALL MODELS 1. Checking method for remote controller for adjustmentPress the IN-START with the remote controller for adjustment VersionA. Video errorColor error You can view 6 types of patterns using the ADJ KeyAppendix Exchange T-Con Board Appendix Exchange T-Con Board Dim Light Appendix Exchange PSULED driverNo Light No picture/Sound Ok A - 3/5Panel Mura, Light leakage Appendix Exchange the ModuleUn-repairable Cases In this case please exchange the module Press damageAppendix Exchange the Module B. Power error Off when on, off whiling viewing 1. Press the IN-START button of the remote controller for adjustment2. Check the entry into adjustment item Entry methodChecking method C. Audio errorNo audio/Normal video1. Press the MENU button on the remote controller 2. Select the AUDIO function of the Menu
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