LG 42LF7700 Service Manual Download Page 40

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+3V3_A

+1V2

Title

Size

Document Number

Rev

Date:

Sheet

71-00144MA

1.0

Douglas Power

LGE freesat

42_47LF7700

Monday, March 16, 2009

Title

Size

Document Number

Rev

Date:

Sheet

71-00144MA

1.0

Douglas Power

LGE freesat

42_47LF7700

Monday, March 16, 2009

Title

Size

Document Number

Rev

Date:

Sheet

71-00144MA

1.0

Douglas Power

LGE freesat

42_47LF7700

Monday, March 16, 2009

C293

105p/16V/1005

C293

105p/16V/1005

C315

104p/16V/1005

C315

104p/16V/1005

C302

104p/16V/1005

C302

104p/16V/1005

C291

226p/6.3V/2012

C291

226p/6.3V/2012

C298

104p/16V/1005

C298

104p/16V/1005

C308

105p/16V/1005

C308

105p/16V/1005

C307

105p/16V/1005

C307

105p/16V/1005

C299

104p/16V/1005

C299

104p/16V/1005

C301

104p/16V/1005

C301

104p/16V/1005

C305

226p/6.3V/2012

C305

226p/6.3V/2012

C295

105p/16V/1005

C295

105p/16V/1005

C316

104p/16V/1005

C316

104p/16V/1005

C312

104p/16V/1005

C312

104p/16V/1005

C311

104p/16V/1005

C311

104p/16V/1005

C310

104p/16V/1005

C310

104p/16V/1005

U102K

FLI10620H

U102K

FLI10620H

CVSS

L13

CVSS

L14

CVSS

L15

CVSS

L16

CVDD12

L17

CVSS

M13

CVSS

M14

CVSS

M15

CVSS

M16

CVSS

N11

CVSS

N12

CVSS

N13

CVSS

N14

CVSS

N15

CVSS

N16

CVSS

N17

CVSS

N18

CVSS

N19

CVSS

P11

CVSS

P12

CVSS

P13

CVSS

P14

CVSS

P15

CVSS

P16

CVSS

P17

CVSS

P18

CVSS

P19

CVSS

R11

CVSS

R12

CVSS

R13

CVSS

R14

CVSS

R15

CVSS

R16

CVSS

R17

CVSS

R18

CVSS

R19

CVSS

T11

CVSS

T12

CVSS

T13

CVSS

T14

CVSS

T15

CVSS

T16

CVSS

T17

CVSS

T18

CVSS

T19

CVSS

U11

CVSS

U12

CVSS

U13

CVSS

U14

CVSS

U15

CVSS

U16

CVSS

U17

CVSS

U18

CVSS

U19

CVSS

V14

CVSS

V15

CVSS

V16

CVSS

V17

CVDD12

W13

CVSS

W14

CVSS

W15

CVSS

W16

CVSS

W17

CVDD12

L11

CVDD12

L12

CVDD12

L18

CVDD12

L19

CVDD12

M11

CVDD12

M12

CVDD12

M17

CVDD12

M18

CVDD12

M19

CVDD12

V11

CVDD12

V12

CVDD12

V13

CVDD12

V18

CVDD12

V19

CVDD12

W11

CVDD12

W12

CVDD12

W18

CVDD12

W19

IOVDD33

F12

IOVDD33

F13

IOVDD33

F14

IOVDD33

F15

IOVDD33

F16

IOVDD33

F18

IOVDD33

F19

IOVDD33

AA6

IOVDD33

AB6

IOVDD33

AD8

IOVDD33

AD10

IOVDD33

AD11

IOVDD33

AD12

IOVDD33

AD14

IOVDD33

AD16

IOVDD33

AD17

IOVDD33

AD18

C318

104p/16V/1005

C318

104p/16V/1005

C300

104p/16V/1005

C300

104p/16V/1005

C292

105p/16V/1005

C292

105p/16V/1005

C314

104p/16V/1005

C314

104p/16V/1005

C309

105p/16V/1005

C309

105p/16V/1005

C317

104p/16V/1005

C317

104p/16V/1005

C303

104p/16V/1005

C303

104p/16V/1005

C306

105p/16V/1005

C306

105p/16V/1005

C313

104p/16V/1005

C313

104p/16V/1005

C304

104p/16V/1005

C304

104p/16V/1005

C297

104p/16V/1005

C297

104p/16V/1005

C294

105p/16V/1005

C294

105p/16V/1005

C296

104p/16V/1005

C296

104p/16V/1005

AHDMI_SCL

AHDMI_SDA

AHDMI_SCL

AHDMI_SDA

AHPD

ATX0+

ATX1+

ATX0-

ATXC+

ATX2-

ATX1-

ATXC-

ATX2+

AHDMI_SCL

AHDMI_SDA

AHPD

ATX0+

ATX1+

ATX0-

ATXC-
ATXC+

ATX2-

ATX1-

ATX2+

+1V2

+3V3_A

+3V3H

+1V8H

+3V3H

+1V8H

+3V3H

+5V

+3V3H

2D2-

[14]

1CK+

[14]

1D1-

[14]

1CK-

[14]

2D0+

[14]

1D0+

[14]

1D0-

[14]

1D2+

[14]

2CK-

[14]

2D1+

[14]

2D2+

[14]

2D0-

[14]

3D2+

[14]

3D2-

[14]

2CK+

[14]

1D1+

[14]

2D1-

[14]

1D2-

[14]

D2SDA

[14]

3D0+

[14]

3D0-

[14]

D1SCL

[14]

3D1-

[14]

3CK+

[14]

3CK-

[14]

D3SDA

[14]

D2SCL

[14]

3D1+

[14]

D1SDA

[14]

HPD1

[14]

HPD2

[14]

HPD3

[14]

D3SCL

[14]

FLI_SCL1

[2,4,18,20]

FLI_SDA1

[2,4,18,20]

HDMI1VCC

[14]

HDMI2VCC

[14]

HDMI3VCC

[14]

PD_RESET

[5]

Title

Size

Document Number

Rev

Date:

Sheet

71-00144MA

1.0

HDMI SWITCH(TDA9996)

LGE freesat

42_47LF7700

Monday, March 16, 2009

Title

Size

Document Number

Rev

Date:

Sheet

71-00144MA

1.0

HDMI SWITCH(TDA9996)

LGE freesat

42_47LF7700

Monday, March 16, 2009

Title

Size

Document Number

Rev

Date:

Sheet

71-00144MA

1.0

HDMI SWITCH(TDA9996)

LGE freesat

42_47LF7700

Monday, March 16, 2009

U102J

FLI10620H

U102J

FLI10620H

DVI_ARXCM

A10

DVI_ARXCP

B10

DVI_ARX0M

DVI_ARX0P

DVI_ARX1M

DVI_ARX1P

DVI_ARX2M

DVI_ARX2P

HDMI_AHPD

B11

HDMI_CEC

A11

2WIRE_S1_SDA

D12

2WIRE_S1_SCL

C12

DVI_BRXCM

DVI_BRXCP

DVI_BRX0M

DVI_BRX0P

DVI_BRX1M

DVI_BRX1P

DVI_BRX2M

DVI_BRX2P

DVI_REXT

HDMI_BHPD

C11

2WIRE_S2_SDA

E11

2WIRE_S2_SCL

D11

HDMI_GNDA

HDMI_VDDA33

HDMI_VDD12

D10

HDMI_VDD12

ADC_VDD12

ADC_GND12

HDMI_VDDA33

HDMI_VDD12

E10

HDMI_GNDA

C10

HDMI_GNDA

C355

104p/16V/1005

C355

104p/16V/1005

TP323
TP08

C338

104p/16V/1005

C338

104p/16V/1005

R340

330/1005

R340

330/1005

C329

104p/16V/1005

C329

104p/16V/1005

C339

104p/16V/1005

C339

104p/16V/1005

C330

106p/16V/2012

C330

106p/16V/2012

TP322
TP08

R330
2490/F/1005

C344

104p/16V/1005

C344

104p/16V/1005

R333

330/1005

R333

330/1005

C347

106p/16V/2012

C347

106p/16V/2012

TDA9996

U321

TDA9996

U321

TEST

I2C_SCL

I2C_SDA

OUT_CN

OUT_CP

OUT_D1N

OUT_D1P

OUT_D0N

100

OUT_D0P

RXA_CN

RXA_CP

VSS

VDDC_1V8

INT_HP_CTRL

RXA_HPD

R12K

OUT_DDC_DAT

OUT_DDC_CLK

VSS

RXA_5V

RXA_DDC_DAT

RXA_DDC_CLK

RXA_D0N

RXA_D0P

RXA_D1N

RXA_D1P

RXA_D2N

RXA_D2P

RXB_HPD

RXB_5V

RXB_DDC_DAT

RXB_DDC_CLK

RXB_CN

RXB_CP

RXB_D0N

RXB_D0P

RXB_D1N

RXB_D1P

RXB_D2N

RXB_D2P

RXC_HPD

RXC_5V

RXC_DDC_DAT

RXC_DDC_CLK

RXC_CN

RXC_CP

RXC_D0N

RXC_D0P

RXC_D1N

RXC_D1P

RXC_D2N

RXC_D2P

RXD_HPD

RXD_5V

RXD_DDC_DAT

RXD_DDC_CLK

RXD_CN

RXD_CP

RXD_D0N

RXD_D0P

RXD_D1N

RXD_D1P

RXD_D2N

RXD_D2P

OUT_D2N

OUT_D2P

CEC

XTAL_IN

XTAL_OUT

CDEC_STBY

CDEC_DDC

MODE

VSS

VDDC_1V8

VDDH_1V8

VDDC_1V8

VDDO_3V3

VDDH_3V3

VDDC_3V3

VDDH_3V3

VDDS_3V3

L321
BLM18PG121SN1D

U322
LD1117AL-ADJ

VIN

ADJ

TAP

C336

104p/16V/1005

C336

104p/16V/1005

R339

330/1005

R339

330/1005

C335

103p/50V/1005

C335

103p/50V/1005

C331

104p/16V/1005

C331

104p/16V/1005

C343

104p/16V/1005

C343

104p/16V/1005

R336
560/F/1005

C326

103p/50V/1005

C326

103p/50V/1005

C350

104p/16V/1005

C350

104p/16V/1005

C333

104p/16V/1005

C333

104p/16V/1005

R335
121/F/1005

C353

106p/16V/2012

C353

106p/16V/2012

R332

330/1005

R332

330/1005

C356

106p/16V/2012

C356

106p/16V/2012

TP324
TP10

C328

104p/16V/1005

C328

104p/16V/1005

R327

330/1005

R327

330/1005

C351

104p/16V/1005

C351

104p/16V/1005

R338

330/1005

R338

330/1005

C325

103p/50V/1005

C325

103p/50V/1005

C349

104p/16V/1005

C349

104p/16V/1005

C348

104p/16V/1005

C348

104p/16V/1005

C327

103p/50V/1005

C327

103p/50V/1005

C341

106p/16V/2012

C341

106p/16V/2012

R324

472/1005

R324

472/1005

C337

104p/16V/1005

C337

104p/16V/1005

C332

104p/16V/1005

C332

104p/16V/1005

C323

104p/16V/1005

C323

104p/16V/1005

R326

330/1005

R326

330/1005

C345

104p/16V/1005

C345

104p/16V/1005

R337

330/1005

R337

330/1005

R322

330/1005

R322

330/1005

C324

104p/16V/1005

C324

104p/16V/1005

C357

104p/16V/1005

C357

104p/16V/1005

C342

104p/16V/1005

C342

104p/16V/1005

R341

330/1005

R341

330/1005

TP325
TP10

R328

123/1005

R328

123/1005

C352

104p/16V/1005

C352

104p/16V/1005

C322

104p/16V/1005

C322

104p/16V/1005

C334

103p/50V/1005

C334

103p/50V/1005

R321

330/1005

R321

330/1005

C321

106p/16V/2012

C321

106p/16V/2012

R323

472/1005

R323

472/1005

R325

472/1005

R325

472/1005

C340

106p/16V/2012

C340

106p/16V/2012

L322
BLM18PG121SN1D

C346

104p/16V/1005

C346

104p/16V/1005

R334

330/1005

R334

330/1005

Summary of Contents for 42LF7700

Page 1: ...S READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS MODEL 42LF7700 42LF7700 ZC North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL42349003 0903 REV00 ...

Page 2: ...t reserved 2 LGE Internal Use Only Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 14 TROUBLE SHOOTING 23 BLOCK DIAGRAM 31 WIRING DIAGRAM 32 EXPLODED VIEW 34 SCHEMATIC DIAGRAMME ...

Page 3: ... such as antennas terminals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in ...

Page 4: ... on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge...

Page 5: ...the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replac...

Page 6: ...formance of each parts are followed each drawing and specification by part number in accordance with BOM 2 5 The receiver must be operated for about 5 minutes prior to the adjustment 4 General Specification No Item Specification Remark 1 Display Screen Device 32 37 42 47 wide Color Display Module 2 Aspect Ratio 16 9 MAKER 32 LGD 37 LGD 42 LGD 47 LGD 3 Operating Environment Temp 5 35 deg Humidity 1...

Page 7: ... Jack 2EA PAL SECAM SCART1 Jack is Full SACRT and support RF OUT TV OUT SCART2 jack is Half SCART and support MNT OUT 4 Video Input RCA 1EA PAL SECAM NTSC Side 5 Component Input 1EA Y Cb Cr Y Pb Pr 6 RGB Input RGB PC Analog D SUB 15PIN 7 HDMI Input 3EA HDMI1 DTV DVI HDMI2 DTV HDMI3 DTV PC HDMI version 1 3 Support HDCP 8 Audio Input 3EA L R Input 9 SDPIF out 1EA In digital mode only 10 Headphone ou...

Page 8: ...k environment at 25 2_ 3 The values specified are at approximate distance 50Cm from the LCD surface 4 Ta 25 2 C VLCD 12 0V fV 60Hz Dclk 72 4MHz VBR_A 1 65V ExtVBR_B 100 6 2 37 LCD Module No Item Min Typ Max Unit Remark 1 Luminance white Luminance white 400 500 cd m PSM Vivid CSM Cool White 100 IRE Dynamic contrast off Dynamic color L off Variation 1 3 2 View angle R L U D 178 178 degree 3 Contrast...

Page 9: ...t at 25 2_ 3 The values specified are at approximate distance 50Cm from the LCD surface 4 Ta 25 2 C VLCD 12 0V fV 60Hz Dclk 72 4MHz VBR_A 1 65V ExtVBR_B 100 6 4 47 LCD Module No Item Min Typ Max Unit Remark 1 Luminance white Luminance white 400 500 cd m PSM Vivid CSM Cool White 100 IRE Dynamic contrast off Dynamic color L off Variation 1 3 2 View angle R L U D 178 178 degree 3 Contrast ratio 900 1...

Page 10: ...t Y PB PR No Resolution H freq kHz V freq kHz Pixel clock MHz Proposed Remark 1 720 480 15 73 59 94 13 500 SDTV DVD 480I 525I 2 720 480 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720 576 15 625 50 00 13 500 SDTV DVD 576I 625I 50Hz 4 720 480 31 47 59 94 27 000 SDTV 480P 5 720 480 31 50 60 00 27 027 SDTV 480P 6 720 576 31 25 50 00 27 000 SDTV 576P 50Hz 7 1280 720 44 96 59 94 74 176 HDTV 720P 8 1280 720...

Page 11: ...q kHz Pixel clock MHz Proposed Remark 1 640 480 31 649 59 94 25 175 SDTV 480p 60Hz 2 640 480 31 469 60 25 20 SDTV 480p 60Hz 3 720 480 31 47 59 94 27 00 SDTV 480p 60Hz 4 720 480 31 50 60 27 027 SDTV 480p 60Hz 5 720 576 31 25 50 00 27 00 SDTV 576p 50Hz 6 1280 720 37 50 50 00 74 176 HDTV 720p 50Hz 7 1280 720 44 96 59 94 74 176 HDTV 720p 60Hz 8 1280 720 45 00 60 74 250 HDTV 720p 60Hz 9 1920 1080 28 12...

Page 12: ...Hz Proposed Remark 1 720 400 31 468 70 08 28 32 HDCP 2 640 480 31 469 59 94 25 17 VESA HDCP 3 800 600 37 879 60 31 40 00 VESA HDCP 4 1024 768 48 363 60 00 65 00 VESA XGA HDCP 5 1280 768 47 78 59 87 80 125 VESA WXGA HDCP 6 1360 768 47 72 59 80 84 625 VESA WXGA HDCP 7 1280 1024 63 98 60 02 108 SXGA HDCP 8 1400 1050 65 317 59 979 121 75 SXGA HDCP 9 1920 1080 66 587 59 934 138 5 WUXGA HDCP ...

Page 13: ... Remark 1 Product Dimension Width W Length D Height H mm Before Packing 918 6 293 8 684 8 mm With Stand After Packing 1015 0 253 0 881 0 mm Box Out Size 2 Product Weight Only SET 17 3 Kg With Stand With BOX 21 1 Kg No Item Content Unit Remark 1 Product Dimension Width W Length D Height H mm Before Packing 1026 2 293 8 734 0 mm With Stand After Packing 1330 0 257 0 772 0 mm Box Out Size 2 Product W...

Page 14: ...ownload a Put the hmx_lf7700 hdf in the USB b Connect the USB device to the USB IN jack on the side of the TV 32LF7700 ZC 37LF7700 ZC 42LF7700 ZC 47LF7700 ZC c Power Off and Power On d Waiting until the new software upgrade is finished e Fishing the version uploading you have to put USB stick and AC Power off f After putting AC Power on and check updated version on your TV z If downloading version...

Page 15: ...ce c Power Off and Power On d Waiting until the new software upgrade is finished e Fishing the version uploading you have to put USB stick and AC Power off f After putting AC Power on and check updated version on your TV z If downloading version is more high than your TV have TV can lost all channel data In this case you have to channel recover if all channel data is cleared you didn t have a DTV ...

Page 16: ...starts c 3 Select No c 4 OTA process does not start d The TV is reboot and OTA process starts e If not the OTA not detection message is shown Manual Update Case a Click the Software Update b Click the Manual Update c Change Frequency Polarization Symbol Rate FEC for OTA TP d Click Search button e If found the OTA detection message is shown e 1 Select Yes e 2 The tv is reboot and OTA process starts...

Page 17: ... The TV is reboot and OTA process starts c 3 Select No c 4 OTA process does not start d The TV is reboot and OTA process starts e If not the OTA not detection message is shown Manual Update Case a Click the Software Update b Click the Manual Update c If found the OTA detection message is shown e 1 Select Yes e 2 The tv is reboot and OTA process starts e 3 Select No e 4 OTA process does not start d...

Page 18: ...You should change the panel size by going to the Factory Mode press Menu 1 2 4 7 and 5 keys on a remote b You have to select 32 37 or 42 47 panel in Factory mode 32LF7700 ZC Panel Select Æ LG_1080P_LC320WUN_50 37LF7700 ZC Panel Select Æ LG_1080P_LC370WUE_50 42LF7700 ZC Panel Select Æ LG_1080P_LC420WUF_100 47LF7700 ZC Panel Select Æ LG_1080P_LC470WUF_100 ...

Page 19: ...ess Menu 1 2 4 7 and 5 keys on a remote b You have to select Engineering Menu in Factory mode c Enter EDID Download by pushing OK key 32LF7700 ZC Factory mode Æ Engineering menu Æ EDID Download select 37LF7700 ZC Factory mode Æ Engineering menu Æ EDID Download select 42LF7700 ZC Factory mode Æ Engineering menu Æ EDID Download select 47LF7700 ZC Factory mode Æ Engineering menu Æ EDID Download selec...

Page 20: ...5 40 61 40 01 01 90 40 81 80 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 35 00 A2 0B 32 00 00 1A 16 21 50 A0 51 00 1E 30 48 88 35 00 A2 0B 32 00 00 1C 00 00 00 FD 00 39 3E 1F 54 12 00 0A 20 20 20 20 20 20 Model Nameⓓ 00 C Sⓔ d 47LF7700 ZC 00 FF FF FF FF FF FF 00 1E 6D Product IDⓐ Serial Noⓑ Week Yearⓒ 01 03 80 46 27 78 2A 60 00 A3 55 4A 9B 25 10 47 4A A1 08 00 31 40 45 40 61 40 01 01 90 40 81 80 01 ...

Page 21: ... 30 20 35 00 33 CC 31 00 00 1A 16 21 50 A0 51 00 1E 30 48 88 35 00 33 CC 31 00 00 1C 00 00 00 FD 00 39 3E 1F 54 12 00 0A 20 20 20 20 20 20 Model Nameⓓ 01 C Sⓔ 02 03 28 F1 50 81 02 03 06 07 15 16 12 13 04 14 05 20 22 1F 10 26 15 07 50 09 57 07 83 01 00 00 67 03 0C 00 Portⓕ 00 B8 2D 01 1D 00 80 51 D0 1C 20 40 80 35 00 BC 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 02 3A 80 1...

Page 22: ...00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 02 3A 80 18 71 38 2D 40 58 2C 45 00 06 44 21 00 00 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C Sⓔ ⓐ Product ID MODEL NAME PRODUCT ID HEX EDID Table 32LF7700 30384 76B0 B076 37LF7700 30376 76A8 A876 42LF7700 40441 9DF9 F99D 47LF7700 30374 76A6 A676 ⓑ Serial No Controlled on produc...

Page 23: ...Line Filter and Power Board Cable Plug in power cord Is normal the Fuse on Power Board Connect cable Is connect the Power Board and 24P of Main Board Cable Replace fuse Connect Cable After remove the cable connect to Power Board except the SC100 connection cable authorizes the AC voltage marking on manual When ST BY 5V does not operate replace Power Board Yes No Is plug in power cord Yes No No No ...

Page 24: ...lor where the front LED is red from blue 2 Check follow Is normal the Power Board Is normal the each connector Is output the normality Low High voltage except Stand by 5V Is normal the Main Board Yes Yes No No No No Replace Power Board After connecting well each connector the normality it operates Replace Power Board After remove JP1 normal operation Replace Main Board Is normal the output voltage...

Page 25: ...at screen 2 It maintains the condition where the front LED is blue 2 Check follow Does minute discharge At Module Is the LVDS cable normal Is the U102 FLI10620H Output normal Yes Yes No No No Is output the normality Low High voltage except stand by 5V Reconnect the LVDS cable No Yes Yes Is the inverter on Replace Main Board Replace Main Board Check the LCD Module ...

Page 26: ...OSD 1 Symptom 1 LED is blue 2 The minute discharge continuously becomes accomplished from module 2 Check follow Is normal the LVDS cable Is the LVDS cable normal Is normal the T Con Board of Module Yes Yes No No No No Yes Is the LVDS cable connected well Replace Power Board Replace T Con Board or LCD Module Cable inserts well No Yes Operates the U102 FLI10620H Replace Main Board Replace U102 FLI10...

Page 27: ...e of becomes unusual display from A V mode 5 In case of becomes unusual display from Component RGB mode Is normal the Tuner D A Freesat Is normal the U102 FLI10620H Yes No No No Yes Is the Tuner cable connected well Is normal the Input voltage IIC Communication and AV2 CVBS output Cable inserts well Yes Is normal the Input voltage IIC Communication and HV sync Replace IC or Main Board No Replace T...

Page 28: ...play from SCART1 mode 8 In case of becomes unusual display from SCART2 mode No Is normal the TDA9996 U321 Same as Block A Yes Check the input source Is normal the Input voltage IIC Communication and HV sync No Is Video input of A V Jack normal JP401 Same as Block A Yes Check the input source No Is Video input of A V Jack normal JP431 Same as Block A Yes Check the input source Replace IC or Main Bo...

Page 29: ...but sound is not output 2 Check follow All input mode is no sound No Is VCC 16V or 20V Normal JP1 1pin Yes No Replace Power Board Yes Is the speaker Cable normal No Check the Speaker Cable Only HDMI is no sound Download the EDID data No No Only DTV is no sound No Yes Check the Tuner In Out Yes Only AV component PC input is no sound No Check the input source Yes Replace Main Board ...

Page 30: ... 30 LGE Internal Use Only Only for training and service purposes 6 Exterior view defectiveness 1 Check follow Damage LCD module Replace LCD Module No Damage cabinet No Yes Yes Replace cabinet Yes Damage RCU Replace RCU No Replace stand Scratch Stand Yes ...

Page 32: ... TV AV Menu V V CON P No EBR48847001 IR Intelligent BOARD P No EBR42600102 CON CON JP471 JP2 JP261 Intelligent B D to Bar Shield Left P No COV30100401 JP1 P201 LIPS to MAIN B D P No COV30100302 Speaker Woofer P No EAB41280401 SC101 Noise Filter P No EAM36140904 Inverter Master Cable Contact with P402 P No COV30100502 Speaker Twitter P No EAB41284401 SPK Cable P No COV30100701 STBY LCD T CON BOARD ...

Page 33: ...CON JP471 JP2 JP641 Intelligent B D to Bar Shield Left P No COV30100401 JP1 P201 LIPS to MAIN B D P No COV30100302 Speaker Woofer P No EAB41280401 SC101 Noise Filter P No EAM36140904 Inverter Master Cable Contact with P402 P No COV30100502 Speaker Twitter P No EAB41284401 SPK Cable P No COV30100701 STBY LCD T CON BOARD P No EAT60663701 CON P402 CON P401 CON LCD PANEL LC420WUF SBB1 P No EAJ60138601...

Page 34: ...is have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE ...

Page 35: ...3p 50V 1005 C20 103p 50V 1005 R28 102 1005 R28 102 1005 TP17 TP10 TP17 TP10 1 Q3 MMBT4401 Q3 MMBT4401 1 2 3 TP9 TP10 TP9 TP10 1 C1 100uF 25V BXE S C1 100uF 25V BXE S TP21 TP10 TP21 TP10 1 TP3 TP10 TP3 TP10 1 R24 102 1005 R24 102 1005 R40 153 1005 R40 153 1005 C18 104p 16V 1005 C18 104p 16V 1005 C27 104p 50V C27 104p 50V C11 105p 25V 2012 C11 105p 25V 2012 Q6 FDV301N_NL Q6 FDV301N_NL 1 3 2 C12 106p...

Page 36: ...700 4 50 Monday March 16 2009 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 Douglas_USB I2C JTAG LGE freesat 42_47LF7700 4 50 Monday March 16 2009 C114 5R0p 50V 1005 C114 5R0p 50V 1005 U103 24LC256 U103 24LC256 A0 1 A1 2 A2 3 VSS 4 VCC 8 SCL 6 SDA 5 WP 7 TP101 TP08 TP101 TP08 1 Y101 19 6608MHZ 20PF SX 1 SMD Y101 19 6608MHZ 20PF SX 1 SMD 1 2 JP101 OPEN 2110 DS14 G JP101 OPEN 2110 DS14...

Page 37: ...e after hard reset A1 A0 00 Function test vendor mode A1 A0 01 Function test vendor mode A1 A0 10 Boot from FLASH A1 A0 11 Boot from IROM Pin POD_HOST_A2 indicates 0 Internal osc 1 External osc Pin POD_HOST_A3 indicates type of memory for external boot FLASH 0 8 bit FLASH 1 16 bit FLASH Pin PODREG_HOST_A4 indicates type of memory for external boot FLASH 0 NOR FLASH 1 NAND FLASH Pin POD_IOWR_HOST_A...

Page 38: ...1 8 2 7 3 6 4 5 PRD257 100 4 1005 PRD257 100 4 1005 1 8 2 7 3 6 4 5 CD295 102p 50V 1005 CD295 102p 50V 1005 CD262 226p 6 3V 2012 CD262 226p 6 3V 2012 RD256 100 1005 RD256 100 1005 RD276 103 1005 RD276 103 1005 PRD262 100 4 1005 PRD262 100 4 1005 1 8 2 7 3 6 4 5 RD272 100 1005 RD272 100 1005 CD280 104p 16V 1005 CD280 104p 16V 1005 CD290 102p 50V 1005 CD290 102p 50V 1005 LD251 BLM18PG121SN1D LD251 B...

Page 39: ...p 16V 1005 C212 104p 16V 1005 C212 104p 16V 1005 C194 104p 16V 1005 C194 104p 16V 1005 R203 200 1005 R203 200 1005 R221 103 1005 R221 103 1005 R182 200 1005 R182 200 1005 R190 200 1005 R190 200 1005 C216 104p 16V 1005 C216 104p 16V 1005 C181 226p 6 3V 2012 C181 226p 6 3V 2012 TP182 TP08 TP182 TP08 1 C200 104p 16V 1005 C200 104p 16V 1005 R183 200 1005 R183 200 1005 R229 392 1005 R229 392 1005 C238 ...

Page 40: ...DVI_ARX2P B7 HDMI_AHPD B11 HDMI_CEC A11 2WIRE_S1_SDA D12 2WIRE_S1_SCL C12 DVI_BRXCM A6 DVI_BRXCP B6 DVI_BRX0M A5 DVI_BRX0P B5 DVI_BRX1M A4 DVI_BRX1P B4 DVI_BRX2M A3 DVI_BRX2P B3 DVI_REXT D9 HDMI_BHPD C11 2WIRE_S2_SDA E11 2WIRE_S2_SCL D11 HDMI_GNDA C9 HDMI_GNDA C8 HDMI_GNDA C7 HDMI_GNDA C6 HDMI_GNDA C5 HDMI_GNDA A2 HDMI_VDDA33 C4 HDMI_VDDA33 D5 HDMI_VDDA33 D6 HDMI_VDDA33 E6 HDMI_VDD12 D10 HDMI_VDD1...

Page 41: ... JST1223 001 GND 1 Vcc 2 Vinput 3 SH1 4 SH2 5 R361 750 F 1005 R361 750 F 1005 R363 750 F 1005 R363 750 F 1005 Q365 MMBT4401 Q365 MMBT4401 1 2 3 R425 OPEN 000 1005 R425 OPEN 000 1005 U363 ILX232 U363 ILX232 T1IN 11 T2IN 10 R1O 12 R2O 9 C1 1 C1 3 C2 4 C2 5 V 6 V 2 GND 15 VCC 16 R2IN 8 R1IN 13 T2O 7 T1O 14 5 5 4 4 3 3 2 2 1 1 D D C C B B A A HDMI_CEC HDMI1_PWR DDC1_SCL DDC1_SDA HDMI_CEC DDC2_SCL DDC2...

Page 42: ...3 1005 C407 47uF 25V BLA S C407 47uF 25V BLA S R410 4021 F 1005 R410 4021 F 1005 RV405 SV060314B431N RV405 SV060314B431N U401A LM393MX U401A LM393MX 3 2 1 8 4 JP401 PSC003 01 JP401 PSC003 01 AOR 1 AIR 2 AOL 3 GND A 4 GND B 5 AIL 6 BLUE 7 FNS 8 GND G 9 DATA2 10 GREEN 11 DATA1 12 GND R 13 GND D 14 R CHROMA 15 RGBC 16 GND V 17 GND R 18 C LUMA 19 CVBSI 20 GND 21 GND 22 GND 23 R419 683 F 1005 R419 683 ...

Page 43: ... C507 104p 16V 1005 C490 102p 50V 1005 C490 102p 50V 1005 C501 106p 16V 2012 C501 106p 16V 2012 R478 472 R478 472 C512 104p 16V 1005 C512 104p 16V 1005 C492 103p 50V 1005 C492 103p 50V 1005 C488 104p 16V 1005 C488 104p 16V 1005 L474 BLM18PG300SN1D L474 BLM18PG300SN1D R471 3R3 R471 3R3 R510 222 F R510 222 F R501 102 1005 R501 102 1005 R477 5R6 F R477 5R6 F C474 105p 50V 3216 C474 105p 50V 3216 R502...

Page 44: ...005 C555 103p 50V 1005 C555 103p 50V 1005 R541 562 1005 R541 562 1005 R549 243 F 1005 R549 243 F 1005 1 1 2 2 3 3 4 4 5 5 6 6 A A B B C C D D SPI_CZ MST_WP SPI_DO RESET SPI_CK SPI_CZ MST_MSCL MST_MSCL SPI_DI MST_MSDA SPI_DO S_SCL S_SDA MST_MSDA RESET SPI_CK SPI_DI S_SDA S_SCL 3V3DIG 3V3DIG 3V3DIG 3V3DIG 3V3DIG 3V3DIG 3V3DIG 3V3DIG FRC_RST 4 FLI_SCL1 2 4 12 18 FLI_SDA1 2 4 12 18 BIT_SEL 5 10 Title ...

Page 45: ...MDATA 30 K2 MDATA 31 M3 DQS 2 L2 DQSB 2 L3 DQS 3 M1 DQSB 3 M2 DQM 3 K3 DQM 2 L1 MCLK 0 R2 MCLKZ 0 P2 MADR 0 P3 MADR 1 P6 MADR 2 T4 MADR 3 P8 MADR 4 R4 MADR 5 R7 MADR 6 P4 MADR 7 R8 MADR 8 T5 MADR 9 P7 MADR 10 T7 MADR 11 R5 MADR 12 T8 BADR 1 T6 BADR 0 R6 MVREF N5 ODT N4 RASZ T3 CASZ R3 WEZ P5 MCLKE N8 CD147 226p 6 3V 2012 CD147 226p 6 3V 2012 CD139 103p 50V 1005 CD139 103p 50V 1005 CD131 226p 6 3V ...

Page 46: ...L235 BLM18PG300SN1D L235 BLM18PG300SN1D CF276 104p 16V 1005 CF276 104p 16V 1005 CF240 103p 50V 1005 CF240 103p 50V 1005 CF232 103p 50V 1005 CF232 103p 50V 1005 CF261 103p 50V 1005 CF261 103p 50V 1005 CF258 103p 50V 1005 CF258 103p 50V 1005 CF231 104p 16V 1005 CF231 104p 16V 1005 CF233 104p 16V 1005 CF233 104p 16V 1005 CF239 104p 16V 1005 CF239 104p 16V 1005 CF281 103p 50V 1005 CF281 103p 50V 1005 ...

Page 47: ... 31 LED_LD_7 36 EBI_nRD 33 34 42 EBI_TSIZE_1 33 LED_LD_5 36 LED_LD_4 36 LED_LD_3 36 LED_LD_1 36 LED_LD_2 36 RMX0_DATA 28 RMX0_SYNC 28 VO_656_D2 31 RMX0_CLK 28 EBI_ADDR25 33 34 EBI_ADDR24 33 34 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 BCM7404 Strapping LGE freesat 42_47LF7700 26 50 Monday March 16 2009 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 BCM7404 Strapping ...

Page 48: ...SPI_M_MISO ALT2_MPOD_SCLK C22 GPIO_43 ENET_LINK C9 GPIO_44 CODEC_SCLK Ext IRQb_14 F10 GPIO_45 ENET_ACTIVITY D9 GPIO_46 CODEC_SDO E10 GPIO_47 CODEC_MCLK E8 GPIO_48 CODEC_SDI Ext IRQb_12 E9 GPIO_49 UART_TXD_0 ALT_IR_INT C8 GPIO_50 UART_RXD_0 Alt_Ext IRQb_12 D8 GPIO_51 Ext IRQb_13 PPKT_DATA5 M21 GPIO_52 PKT_CLK4 ALT_SC_RST_1 MII_TX_EN PPKT_SYNC M26 GPIO_53 PKT_VALID1 DVO_HSYNC K23 GPIO_54 PKT_SYNC4 A...

Page 49: ...1 2 2 3 3 4 4 5 5 6 6 A A B B C C D D VDD_DDR VDD_1V2 3V3_D_CPU VDD_1V2 VDD_DDR 3V3_D_CPU VDD_DDR VDD_1V2 3V3_D_CPU Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 BCM7404 Digital Power LGE freesat 42_47LF7700 30 51 Monday March 16 2009 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 BCM7404 Digital Power LGE freesat 42_47LF7700 30 51 Monday March 16 2009 Title Size Documen...

Page 50: ...1005 R964 37R4 F 1005 C975 104p 16V 1005 C975 104p 16V 1005 VIDEO AMP with FILTER U961 FMS6363 VIDEO AMP with FILTER U961 FMS6363 IN1 1 IN2 2 IN3 3 VCC 4 GND 5 OUT3 6 OUT2 7 OUT1 8 C973 104p 16V 1005 C973 104p 16V 1005 R965 37R4 F 1005 R965 37R4 F 1005 1 1 2 2 3 3 4 4 5 5 6 6 A A B B C C D D DP DN VBUS0 GND0 DP DN 2V6_LAN VDD_DDR 3V3_D_CPU 3V3_D_CPU VDD5 ENET_ACTIVITY 27 ENET_LINK 27 Title Size Do...

Page 51: ...DDR14 AA22 PCI_AD31 EBI_ADDR15 Y24 PCI_CBE00 EBI_ADDR16 AE22 PCI_CBE01 EBI_ADDR17 AF24 PCI_CBE02 EBI_ADDR18 AF26 PCI_CBE03 EBI_ADDR19 AB24 PCI_INT_A2 Y21 PCI_RSTb Y22 PCI_GNT0b AA17 PCI_TRDYb EBI_TAb AC23 PCI_FRAMEb AA21 PCI_IRDYb EBI_ADDR21 AE25 PCI_STOPb EBI_ADDR22 AF25 PCI_DEVSELb EBI_ADDR23 AB21 PCI_CLK_IN Y23 PCI_PERRb AE24 PCI_REQ1b AB17 PCI_PAR EBI_ADDR20 AC21 PCI_SERRb EBI_TEAb AD23 PCI_IN...

Page 52: ...6 LED_LD_6 26 LED_LD_5 26 LED_LD_1 26 LED_LD_7 26 LED_LD_2 26 LED_LS_3 26 LED_LD_4 26 LED_LS_0 26 LED_LD_0 26 IR_IN 1 2 5 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 BCM7404 Miscellaneous LGE freesat 42_47LF7700 36 50 Monday March 16 2009 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 BCM7404 Miscellaneous LGE freesat 42_47LF7700 36 50 Monday March 16 2009 Title Size D...

Page 53: ...1005 PRD1172 220 4 1005 1 8 2 7 3 6 4 5 CD1167 104p 16V 1005 CD1167 104p 16V 1005 PRD1160 220 4 1005 PRD1160 220 4 1005 1 8 2 7 3 6 4 5 64Bit DDR SDRAM U841 13 BCM7404ZKPB1G 64Bit DDR SDRAM U841 13 BCM7404ZKPB1G DDR0_DATA62 C1 DDR0_DQS6 G5 DDR0_DQS5 H5 DDR0_DQS4 K5 DDR0_DQS3 U5 DDR0_DM6 F4 DDR0_DM5 J5 DDR0_DM4 K4 DDR0_DM3 U4 DDR0_DATA61 D3 DDR0_DATA60 C3 DDR0_DATA59 B1 DDR0_DATA58 A2 DDR0_DATA57 B...

Page 54: ...1 MB_DDR_DQ 63 0 DDR_ADD9 DDR_CKE MB_DDR_DQ11 DDR_WE_N MB_DDR_DQ13 MB_DDR_DQ5 DDR_ADD12 MB_DDR_DQ17 MB_DDR_DQ23 DDR_ADD2 DDR_RAS_N DDR_ADD7 DDR_ADD5 MB_DDR_DQ37 DDR_ADD12 MB_DDR_DQM 7 0 DDR_ADD3 MB_DDR_DQ47 DDR_ADD2 DDR_ADD10 MB_DDR_DQ18 MB_DDR_DQ39 DDR_CKE DDR_ADD 12 0 DDR_ADD9 MB_DDR_DQ 63 0 MB_DDR_DQ46 MB_DDR_DQ43 MB_DDR_DQ44 MB_DDR_DQ45 MB_DDR_DQ41 MB_DDR_DQ40 MB_DDR_DQ42 MB_DDR_DQ 63 0 38 MB_...

Page 55: ...4 CI_OUTEN_N 27 nCI_IRQ 27 nCI_CD2 27 nCI_CD1 27 RMXP_CLK 27 PPKT_SYNC 27 RMXP_SYNC 27 RMXP_D 7 0 27 PPKT_VAL 27 RMXP_VAL 27 PPKT_CLK 27 PPKT_D 7 0 27 CI_RESET 27 CI_PWR 27 EBI_DS_N 26 33 EBI_WE1_N 33 EBI_nWE 33 34 EBI_nRD 26 33 34 EBI_CS2_CI1A_N 33 EBI_IOREADY_N 33 EBI_DATA 15 0 33 34 EBI_RW_N 26 33 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 BCM7404 CI Interface LGE freesat 42_47...

Page 56: ...6V 1005 R1123 132 F 1005 R1123 132 F 1005 U1125 LD1117AL 1 2 SOT 223 U1125 LD1117AL 1 2 SOT 223 ADJ 1 TAP 4 VIN 3 VO 2 C1128 226p 6 3V 2012 C1128 226p 6 3V 2012 U1126 RT9018B25PSP U1126 RT9018B25PSP EN 2 VDD 4 VIN 3 NC 5 PGOOD 1 VOUT 6 ADJ 7 GND 8 TAP 9 R1125 103 F 1005 R1125 103 F 1005 C1131 OPEN 105p 16V 1005 C1131 OPEN 105p 16V 1005 TP1127 TP10 TP1127 TP10 1 U1124 LD1117AL ADJ U1124 LD1117AL AD...

Page 57: ...ze Document Number Rev Date Sheet of 71 00144MA 1 0 CH BCM4505_DEMOD LGE freesat 42_47LF7700 46 50 Monday March 16 2009 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 CH BCM4505_DEMOD LGE freesat 42_47LF7700 46 50 Monday March 16 2009 Title Size Document Number Rev Date Sheet of 71 00144MA 1 0 CH BCM4505_DEMOD LGE freesat 42_47LF7700 46 50 Monday March 16 2009 BBS STRAP FUNCTION BCM45...

Page 58: ...04p 16V 1005 C1200 106p 16V 2012 C1200 106p 16V 2012 C1243 475p 6 3V 2012 C1243 475p 6 3V 2012 C1215 102p 50V 1005 C1215 102p 50V 1005 C1241 103p 50V 1005 C1241 103p 50V 1005 C1222 103p 50V 1005 C1222 103p 50V 1005 C1237 104p 16V 1005 C1237 104p 16V 1005 C1196 106p 16V 2012 C1196 106p 16V 2012 C1232 102p 50V 1005 C1232 102p 50V 1005 C1198 104p 16V 1005 C1198 104p 16V 1005 C1230 104p 16V 1005 C1230...

Page 59: ...4p 16V 1005 C1298 104p 16V 1005 C1299 104p 16V 1005 C1299 104p 16V 1005 R1297 101 1005 R1297 101 1005 C1301 104p 16V 1005 C1301 104p 16V 1005 L1295 BLM18PG121SN1D L1295 BLM18PG121SN1D R1296 330 1005 R1296 330 1005 C1304 104p 16V 1005 C1304 104p 16V 1005 U1291 TDA10048HN U1291 TDA10048HN VDDA_3V3 1 VIM 2 VIP 3 VSSA_3V3 4 VDDD_3V3 5 VSSA_3V3 6 XIN 7 XOUT 8 VDDA_1V2 9 VSSA_1V2 10 VDDA_1V2 11 VDDDC_1V...

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