LG Electronics 32LT380C/380H-ZA Extspk Amp, UART/I2C SWITCH, Extspkcontrol/Debug, Extspk Out

Page 33
EXT_SPK AMP

EXT_SPK AMP

 

400mA

 

+5V_Normal

 

 

 

 

+5V_SUB_AMP

+5V_SUB_AMP

 

EXT_SPK

 

 

 

 

 

 

 

 

 

 

L1704

 

 

 

BLM18PG121SN1D

 

 

 

 

 

 

 

EXT_SPK

EXT_SPK

 

EXT_SPK

 

 

 

 

C1700

C1701

 

IC1700

 

 

 

 

22uF

0 . 1 u F

 

 

 

 

 

16V

TPA6011A4PWPRG4

 

 

 

 

 

 

 

 

 

 

 

PGND_1

ROUT+

 

 

 

 

 

 

1

24

EXT_SPK

 

EXT_SPK_R+

 

 

 

 

EXT_SPK

 

 

 

 

 

 

R1711

 

 

 

 

ROUT-

SE/BTL

R1714

 

 

 

 

100

1K

 

 

EXT_SPK_R-

 

2

23

 

 

 

 

 

EXT_SPK

 

 

 

 

 

 

 

R1700

PVDD_1

HP/LINE

EXT_SPK

+5V_SUB_AMP

 

 

 

1K

 

 

 

 

 

3

22

 

EXT_SPK

 

 

 

 

 

 

R1708

 

 

 

 

RHPIN

VOLUME

0

R1712

 

 

 

 

 

3.3K

+3.5V_ST

 

C1702

4

21

 

 

 

 

 

1uF

 

 

 

 

 

 

 

10V

RLINEIN

SEDIFF

 

 

 

EXT_SPK

 

 

 

 

 

EXT_AMP_R_IN

 

5

20

 

 

EXT_SPK

R1718

 

EXT_SPK

 

 

 

 

4.7K

 

 

 

 

 

R1717

 

 

 

RIN

SEMAX

 

 

100

 

 

 

6

19

 

 

 

 

 

 

 

 

 

EXT_SPK

 

EXT_SPK

 

 

 

 

 

C

100

 

 

VDD

AGND

 

R1715

 

 

7

18

 

10K

 

R1719

 

 

 

 

 

 

B

 

 

 

 

 

 

 

SUB_AMP_MUTE

 

 

LIN

BYPASS

 

 

 

Q1700

 

 

8

17

 

EXT_SPK

E

MMBT3904(NXP)

 

 

 

 

 

C1709

OPT

EXT_SPK

 

 

 

 

 

R1716

 

 

LLINEIN

FADE

 

1uF

 

 

 

 

100

 

EXT_AMP_L_IN

 

9

16

 

25V

 

 

 

C1703

 

 

 

 

 

 

 

1uF

LHPIN

SHUTDOWN

 

 

 

 

10V

10

15

 

 

 

 

 

EXT_SPK

 

 

 

 

 

 

 

 

PVDD_2

LOUT+

 

 

 

 

 

 

11

14

 

 

EXT_SPK_L+

 

 

 

 

 

EXT_SPK

 

 

 

 

LOUT-

PGND_2

 

R1713

 

 

EXT_SPK_L-

 

12

13

 

1K

 

 

 

 

EXT_SPK

 

 

 

 

 

 

 

R1701

 

 

 

 

 

 

 

1K

 

 

 

 

 

UART/I2C SWITCH

 

 

 

 

 

UART_SW1

 

CONNECTION

 

UART_SW2

CONNECTION

 

 

L

A - B0

MSTAR ADJ

L

A - B0

INTERACTIVE

 

H

A - B1

MSTAR DEBUG

H

A - B1NEC USB_DOWNLOAD

 

 

 

 

R1720

 

 

 

 

 

R1728

 

 

 

 

 

100

 

 

 

 

 

 

 

 

 

 

 

 

 

UART_SW1

 

 

100

 

UART_SW2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC1703

 

 

 

 

 

 

 

+3.5V_ST

 

NLASB3157DFT2G

 

 

 

IC1707

 

 

 

 

 

 

 

 

+3.5V_ST

 

 

 

 

 

 

 

 

 

NLASB3157DFT2G

 

 

SELECT

6

 

 

1

B1

 

 

 

 

 

 

 

 

 

MST_DBG_TX

 

SELECT

 

B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON SEMICONDUCTOR

 

 

 

6

1

MST_NEC_TX

C1710

VCC

ANALOG SWITCH

GND

 

 

ON SEMICONDUCTOR

 

0 . 1uF

 

5

 

 

2

 

C1712

VCC

 

 

 

 

 

 

 

 

0 . 1uF

ANALOG SWITCH

GND

 

 

 

 

 

 

 

 

 

 

5

2

 

 

A

4

 

 

3

B0

R1726

 

 

 

 

MST_TX

 

 

 

UART_TX

A

 

B0

 

 

 

 

 

 

 

 

100

4

 

 

 

 

EAN38256201

 

NEC_RX

 

3

UART_RX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EAN38256201

 

 

 

 

 

R1723

 

 

 

 

 

 

 

 

 

 

0

 

OPT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC1708

 

 

 

 

 

IC1704

 

 

 

 

NLASB3157DFT2G

 

 

 

NLASB3157DFT2G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SELECT

6

B1

 

 

SELECT

 

 

 

 

B1

 

 

1

MST_NEC_RX

 

6

 

 

1

 

 

 

 

 

 

 

 

MST_DBG_RX

 

 

ON SEMICONDUCTOR

 

 

 

 

 

 

 

 

 

 

 

 

ON SEMICONDUCTOR

 

 

VCC

ANALOG SWITCH

GND

 

 

VCC

ANALOG SWITCH

GND

 

 

5

2

 

 

 

5

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

R1727

 

 

 

 

 

 

 

 

 

 

100

A

4

B0

 

 

A

 

 

 

 

B0

NEC_TX

 

3

UART_TX

 

4

 

 

3

 

 

 

MST_RX

 

 

 

UART_RX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EAN38256201

 

 

 

 

 

EAN38256201

 

 

 

 

 

 

 

 

 

R1722

 

 

 

 

 

 

 

 

 

 

0

OPT

 

 

 

 

 

 

EXT_SPK_CONTROL/DEBUG

 

 

DBG_SW

CONNECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1704

 

 

 

 

 

 

 

 

L

A - B0DEBUG_NEC/MSTAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

A - B1EXT_SPK CONTROL

 

 

 

 

 

100

 

 

 

 

DBG_SW

 

 

 

 

 

 

 

 

 

 

+3.5V_ST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC1701

 

 

 

 

 

+3.5V_ST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1705

 

 

 

 

 

 

 

 

NLASB3157DFT2G

 

 

 

R1709

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 . 1 u F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1706

3.6K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SELECT

 

 

B1

0

 

 

 

 

 

 

 

JK1701

 

 

 

 

 

 

 

 

 

6

 

 

 

1

 

 

 

 

 

 

EXT_VOL+

 

 

 

PEJ027-04

 

 

 

 

 

 

 

 

 

 

ON SEMICONDUCTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC ANALOG SWITCH

 

 

GND

 

 

 

 

 

 

 

3

E_SPRING

 

 

 

 

5

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UART_SW CONNECTION

LA - B0 NEC DEBUG

H A - B1 MSTAR DEBUG

EEPROM_SW

CONNECTION

L

A - B0 NEC-EEPROM

H

A - B1MSTAR-EEPROM

 

R1731

 

22

 

EEPROM_SW

 

C1714

 

6A

T_TERMINAL1

 

A

4

3

B0

 

 

 

 

 

DBG_TX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7A

B_TERMINAL1

 

 

EAN38256201

 

+3.5V_ST

 

 

 

 

 

 

 

 

 

4

R_SPRING

 

 

 

IC1702

 

 

 

 

 

 

 

NLASB3157DFT2G

 

R1710

 

 

 

 

 

 

 

 

 

5

T_SPRING

 

 

 

 

 

3.6K

 

 

 

 

SELECT

 

 

B1

R1707

 

 

 

 

6

1

0

 

7B

B_TERMINAL2

 

 

 

EXT_VOL-

 

 

 

 

 

 

 

 

 

 

 

ON SEMICONDUCTOR

 

 

 

6B

T_TERMINAL2

 

VCC

ANALOG SWITCH

GND

 

 

 

 

5

2

 

 

 

 

 

 

 

 

 

 

 

 

 

A

4

3

B0

 

 

 

 

 

 

 

DBG_RX

 

 

 

 

 

 

 

 

 

 

 

 

 

EAN38256201

 

 

EXT_SPK OUT

 

 

 

 

EXT_SPK

 

 

 

 

 

 

 

 

JK1700

 

 

 

 

 

 

 

 

PEJ029-02

 

 

 

 

 

 

 

 

8

G_SPRING

 

 

 

L1700EXT_SPK

 

 

 

 

 

 

 

 

EXT_SPK_R-

 

 

 

 

 

 

 

 

3

E_SPRING

 

 

 

L1701EXT_SPK

 

 

 

 

 

 

 

 

EXT_SPK_R+

 

 

 

 

 

 

 

 

4

R_SPRING

 

 

 

L1702EXT_SPK

 

 

 

 

 

 

 

 

 

EXT_SPK_L-

5

T_SPRING

 

 

 

L1703 EXT_SPK

 

 

 

 

 

 

 

 

EXT_SPK_L+

 

 

 

 

 

 

 

 

 

B_TERMINAL

C1704

C1706

C1707

C1708

 

 

7

39pF

39pF

39pF

39pF

 

 

 

 

 

 

 

 

 

OPT

OPT

OPT

OPT

 

 

6

T_TERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+3.3V_Normal

 

 

 

 

 

 

 

OPT

 

 

 

 

 

 

 

 

R1702

 

EXT_SPK

 

 

 

 

 

51K

 

 

 

 

 

 

 

 

R1705

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

 

 

 

EXT_SPK_DET

 

 

 

EXT_SPK

 

 

 

 

 

 

 

R1703

 

 

 

 

 

 

 

 

4.7K

 

 

 

 

 

DBG_TX

DBG_RX

 

 

R1721

 

 

 

 

100

UART_DBG_SW

 

 

 

 

 

 

 

+3.5V_ST

 

 

IC1705

 

 

+3.5V_ST

 

NLASB3157DFT2G

 

 

 

 

R1724

 

 

 

 

 

 

 

 

4.7K

 

SELECT

6

1

B1

 

 

MST_DBG_TX

C1711

 

ON SEMICONDUCTOR

R1725

 

0

0 . 1 u F

VCC

ANALOG SWITCH

2

GND

 

 

5

 

 

A

4

3

B0

 

 

NEC_DBG_TX

 

 

 

 

 

 

EAN38256201

 

 

 

 

IC1706

 

 

 

 

NLASB3157DFT2G

 

 

SELECT

6

1

B1

 

 

MST_DBG_RX

 

 

 

 

 

 

ON SEMICONDUCTOR

 

 

VCC

ANALOG SWITCH

2

GND

 

 

5

 

 

A

4

3

B0

 

 

NEC_DBG_RX

 

 

 

 

 

 

EAN38256201

 

 

 

 

 

 

 

 

 

 

 

 

1uF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50V

 

 

 

 

 

+3.5V_ST

 

 

 

 

 

IC1709

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NLASB3157DFT2G

 

 

 

 

 

 

 

 

 

 

 

SELECT

6

 

 

 

1

B1

 

 

C1713

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON SEMICONDUCTOR

 

 

 

 

0 . 1uF

 

 

 

 

 

VCC

ANALOG SWITCH

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

4

 

 

 

3

B0

 

 

EEPROM_SCL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EAN38256201

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1730

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC1710

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NLASB3157DFT2G

 

 

 

 

 

 

 

 

 

 

 

SELECT

6

 

 

 

1

B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON SEMICONDUCTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

ANALOG SWITCH

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

4

 

 

 

3

B0

 

 

EEPROM_SDA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EAN38256201

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1729

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPT

 

 

 

 

 

UART/I2C SWITCH I2C_SCL

EXT_SPK_CONTROL/DEBUG NEC_EEPROM_SCL

EXT_SPK OUT I2C_SDA

Manual background NEC_EEPROM_SDA

THE Manual backgroundSYMBOL 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXT SPK

 

 

 

 

 

 

 

 

 

 

 

 

1 7

2 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents http//aic.lgservice.com READ THE SAFETY PRECAUTIONS IN THIS MANUALhttp//eic.lgservice.com http//biz.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 methodRGB-PC RGB InputAnalogD-SUB 15PIN HDMI1-DTV/DVI5. Video resolutions 2D 5.1. Component Input Y, CB/PB, CR/PR5.2. RGB Input PC PCDVI 5.3. HDMI InputPC/DTVBoot file Download ADJUSTMENT INSTRUCTIONAfter downloading, have to adjust Tool Option again 1. Application Range4.1. Adjustment Preparation 4. Total Assembly line process3.1. ADC Process 3.2. Function Check4.2. DDC EDID Write RGB 128Byte 4.4. EDID data4.3 DDC EDID Write HDMI 256Byte Manual W/B process using adjust Remote control4.6. HI-POT Test 4.5. Outgoing condition Configuration4.6.1. HI-POT auto-check preparation 4.6.2. HI-POT auto-check5. Model name & Serial number D/L 5.1. Signal Table5.2. Comand Set 5.3. Method & notice6.1. Download Procedure 6. CI+ Key Download methodCI+ Key Value S7LR BLOCK DIAGRAMAll rights reserved HalfEXPLODED VIEW GP4MSTAR EMEA INTERACTIVE2011 . 08 Copyright 2012 LG Electronics. Inc. All rights reservedOLED THERMAL Step Up regulator 3 . 3V to 5VMAX 250mAPowerDET FROM LIPS & POWER B/D+1.5VDDR +3.3VNormalNTP-7500L IC501CONTROL IR & LED 30Pin LVDS Connector For HD 60HzNormal 51Pin LVDS ConnectorFor FHD 60/120Hz MIRROR Pol - changeFor CEC HDMI1HDMI2 SIDEHDMI0 . 3 3 u F USBDIODES RGB/SPDIF/PC/HP/USBS7LRDIVXMS10 MX25L8006EM2I-12G IC1300IC1300-*1 W25Q80BVSSIGP4RGLOBALTUNERBLOCK SI2176ATSC1INPUTHSI2156DVB1INPUTH IC1501 LGDT1001PILG1001 A2 Full Scart/ Comp1 EXTSPK AMP UART/I2C SWITCHEXTSPKCONTROL/DEBUG EXTSPK OUTREAL TIME CLOCKRTC EXTERNALPOWER OUT 5V/12VOption name of this page CI SLOT because of Hong Kong CI RegionSMD GASKET Page 1. Trouble Shooting Contents of LCD TV Standard Repair ProcessMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A. Video errorLCD TV A2 Check Power Board 24V,12V,3.5V outputCheck various voltages of PowerNo Video BoardBy using Digital signal level meter A. Picture ProblemBy using Diagnostics menu on OSD Menu→Setup→Manual Tuning Signal strength Normal over 30% Signal Quality Normal over 30%※ Check Check color by input -External Input COMPONENT -RGBand replace Link CableExternal device screen error-Color error Connect other external device and cableVertical/Horizontal bar, residual image, light spot Check color condition by input -External Input -Component RGBStand-By Red Operating white B. Power errorCheck Power LED Check Power On ‘”High”If Power Off mode is not displayed Check Power B/D voltage Check Power Off Starusinstart menuPOWEROFFABNORMAL1 POWEROFFCPUABNORMALPower Board C. Audio errorCheck user menu Speaker off Check audio B+Check audio B+ Voltage 20V or In case of External Input signal error Check and fix external device1. Remote controlR/C operating error D. General Function ProblemCheck & Repair Cable connection Connector solder Output signalCheck input signal D. Function errorY Check technical Signal information input? - Fix information S/W VersionIdentify nose type E. NoiseF. Exterior defect MENU -Æ red keycustomer support -Æ signal test -Æ select channel A. Video errorVideo error, video lag/stopWhen the signal is strong, use the attenuator -10dB, -15dB, -20dB etc Standard Repair Process Detail Technical ManualPress the IN-START with the remote controller for adjustment 1. Checking method for remote controller for adjustmentALL MODELS VersionYou can view 6 types of patterns using the ADJ Key A. Video errorColor errorAppendix Exchange T-Con Board Appendix Exchange T-Con Board No Light Appendix Exchange PSULED driverDim Light No picture/Sound Ok A - 3/5Un-repairable Cases In this case please exchange the module Appendix Exchange the ModulePanel Mura, Light leakage Press damageUn-repairable Cases In this case please exchange the module 2. Check the entry into adjustment item 1. Press the IN-START button of the remote controller for adjustmentB. Power error Off when on, off whiling viewing Entry method1. Press the MENU button on the remote controller C. Audio errorNo audio/Normal videoChecking method 2. Select the AUDIO function of the Menu
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