LG 37LH50YD Page 16 Service Manual Download

Page: 16 / 66

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.

MAIN_2

+3.3V_AVDD

+1.8V_DDR

+3.3V_S6

L209

BLM18PG121SN1D

+3.3V

+3.3V_S6

L206

BLM18PG121SN1D

+3.3V_S6

L210

BLM18PG121SN1D

+3.3V_VDDP

+3.3V

+1.8V_DDR

+3.3V_AVDD_MPLL

+1.26V_VDDC

+3.3V_VDDP

C281
0.1uF

C2003
0.1uF

C297
0.1uF

C275
0.1uF

C2001
0.1uF

C246
0.1uF

C249
0.1uF

C243
0.1uF

C289
0.1uF

C2005
0.1uF

C252
0.1uF

C2000
0.1uF

C2026
0.1uF

C250
0.1uF

C276
0.1uF

C258
0.1uF

C244
0.1uF

C265
0.1uF

C2004
0.1uF

C241
0.1uF

C247
0.1uF

C253
0.1uF

C259
0.1uF

C254
0.1uF

C283
0.1uF

C291
0.1uF

C242
0.1uF

C245
0.1uF

C248
0.1uF

C251
0.1uF

C296
0.1uF

C277
0.1uF

C266
0.1uF

C2027
0.1uF

C293

0.1uF

C263

0.1uF

C267

0.1uF

C284

0.1uF

C279

0.1uF

C256

0.1uF

C262

0.1uF

C274

0.1uF

C273

0.1uF

C269

0.1uF

C260

0.1uF

C271

0.1uF

C286

0.1uF

C261
0.1uF

C268
0.1uF

C290
0.1uF

C219
0.1uF

C282
0.1uF

C280
0.1uF

C299
0.1uF

C295
0.1uF

C278
0.1uF

C220
0.1uF

C240
330uF
4V

OPT

C2010
330uF
4V

OPT

C294
0.1uF

C257
0.1uF

C264
0.1uF

+3.3V_S6

C2029

0.1uF

C2030

0.1uF

C270
0.1uF

C298
0.1uF

C2002
10uF

C2028
10uF

C2025
10uF
6.3V

SPDIF_OUT

004:T7

R2025

AV1_R_IN

004:N17

FE_SIF

011:G26

C218

0.047uF

5V_HDMI_3

R2008

100

MEMC_RXE4-

009:P27

MEMC_RXO4-

009:S27

HDMI_RX2-

C212

0.047uF

SCL_HDMI_SW

COMP1_R_IN

004:N21

R2019

470

R2030

R2024

C2007

2.2uF

DSUB_VSYNC

004:S20

DSUB_G

004:S22

AV2_L_IN

004:AM5

C222

0.047uF

D2+_HDMI4

R2005

100

009:P27

C205

0.047uF

R2015

AV1_CVBS_IN

004:N9

C208

1000pF

50V

R2020

R2011

D0+_HDMI4

C238
22pF

OPT

C204

0.047uF

PC_L_IN

004:I26

R2016

C2008

2.2uF

COMP2_Pr_IN

004:W12

C216

0.047uF

C230

2.2uF

R2046

MEMC_RXEC-

009:Q27

C2014

2.2uF

C214

0.047uF

R2000

10K

C2009

2.2uF

C201

0.047uF

D0-_HDMI4

COMP1_Pb_IN

004:W12

MEMC_RXO3-

009:S27

C2012

2.2uF

R2033

390

Check

009:T27

C2015

2.2uF

R2001

10K

COMP2_L_IN

004:N15

009:R27

MEMC_RXE3-

009:P27

C221

0.047uF

MS_LRCH

007:K17

R2047

PC_R_IN

004:I25

R2038

R2013

COMP2_R_IN

004:N19

009:S27

R2010

R2037

R2009

C225

10uF 6.3V

SDA_HDMI_SW

AUDIO_MASTER_CLK

007:K12

AV1_L_IN

004:N13

MEMC_RXE1-

009:R27

R2049
0

D1-_HDMI4

MEMC_RXO1-

009:T27

C239
22pF

OPT

C231

0.1uF

009:Q27

HDMI_CEC

006:AN24

R2002

C200

0.047uF

COMP2_Y_IN

004:W10

R2031

HDMI_CLK-

HPD4

MS_LRCK

007:K17

C236
22pF

OPT

DSUB_B

004:S21

C227

1uF

R2022

009:Q27

R2036

MEMC_RXO2-

009:T27

C215

0.047uF

HDMI_RX0-

COMP1_Pr_IN

004:W13

C233

0.1uF

DSUB_R

004:S24

HDMI_RX1-

R2039

C2011

2.2uF

D2-_HDMI4

C2006

2.2uF

MEMC_RXE0-

009:R27

C232

0.1uF

009:T27

MEMC_RXO0-

009:U27

CK-_HDMI4

R2014

FE_VMAIN

011:Q21

C217

0.047uF

C206

0.047uF

R2004

100

C2016

2.2uF

COMP1_L_IN

004:N16

MEMC_RXOC-

009:T27

MEMC_RXE2-

009:Q27

R2007

C235

0.1uF

C223

0.1uF

MS_SCK

007:K17

R2018

R2021

+3.3V_AVDD

AV2_R_IN

004:AM6

C237
22pF

OPT

C211

0.047uF

009:P27

C202

0.047uF

R284

HPD2

C213

0.047uF

R2003

C226

0.1uF

AV2_CVBS_IN

004:AM4

C228

4.7uF

CK+_HDMI4

C2013

2.2uF

DSUB_HSYNC

004:S20

R2026

100

COMP2_Pb_IN

004:W11

C229

2.2uF

009:U27

D1+_HDMI4

C207

0.047uF

R285

100

009:Q27

C234

0.1uF

R2017

C224

0.1uF

COMP1_Y_IN

004:W11

009:S27

R283

009:S27

R2012

470

C203

1000pF

50V

R2023

470

C209

1000pF

50V

DDC_SDA_4

DDC_SCL_4

C210
2.2uF
16V

HPD1

R201

100

LGE3369A (Saturn6 Non RM)

IC100

RXACKP

RXACKN

RXA0P

RXA0N

RXA1P

RXA1N

RXA2P

RXA2N

DDCD_A_DA

DDCD_A_CK

HOTPLUG_A

RXBCKP

RXBCKN

RXB0P

RXB0N

RXB1P

RXB1N

RXB2P

RXB2N

DDCD_B_DA

DDCD_B_CK

HOTPLUG_B

RXCCKP

AE8

RXCCKN

AD8

RXC0P

AD9

RXC0N

AF8

RXC1P

AF9

RXC1N

AE9

RXC2P

AE10

RXC2N

AD10

DDCD_C_DA

AE7

DDCD_C_CK

AF7

HOTPLUG_C

AD7

CEC

HSYNC0/SC1_ID

VSYNC0/SC1_FB

RIN0P/SC1_R

GIN0P/SC1_G

BIN0P/SC1_B

SOGIN0/SC1_CVBS

RINM

BINM

GINM

HSYNC1/DSUB_HSYNC

VSYNC1/DSUB_VSYNC

RIN1P/DSUB_R

GIN1P/DSUB_G

BIN1P/DSUB_B

SOGIN1

RIN2P/

GIN2P/

BIN2P/

SOGIN2

VSYNC2

CVBS1/SC1_CVBS

CVBS2/SC2_CVBS

CVBS3/SIDE_CVBS

VCOM1

CVBS4/S-VIDEO_Y

CVBS6/S-VIDEO_C

CVBS5

CVBS7

CVBS0/RF_CVBS

VCOM0

CVBSOUT0/SC2_MNTOUT

CVBSOUT1

AA2

LVA0P

AE16

LVA0M

AD16

LVA1P

AD15

LVA1M

AF16

LVA2P

AF15

LVA2M

AE15

LVA3P

AD13

LVA3M

AF14

LVA4P

AF13

LVA4M

AE13

LVACKP

AE14

LVACKM

AD14

LVB0P

AE20

LVB0M

AD20

LVB1P

AD19

LVB1M

AF20

LVB2P

AF19

LVB2M

AE19

LVB3P

AD17

LVB3M

AF18

LVB4P

AF17

LVB4M

AE17

LVBCKP

AE18

LVBCKM

AD18

AUR0

AA3

AUL0

AUR1

AE1

AUL1

AF3

AUR2

AE3

AUL2

AE2

AUR3

AA1

AUL3

AB1

AUR4

AB2

AUL4

AC2

AUR5

AB3

AUL5

AC3

SIF0P

SIF0M

SPDIF_IN

F11

SPDIF_OUT

AUOUTR0/HP_ROUT

AF1

AUOUTL0/HP_LOUT

AF2

AUOUTR1/SC1_ROUT

AD3

AUOUTL1/SC1_LOUT

AD1

AUOUTR2/SC2_ROUT

AC1

AUOUTL2/SC2_LOUT

AD2

I2S_OUT_MCK

I2S_OUT_WS

I2S_OUT_BCK

I2S_OUT_SD

I2S_IN_SD

VCLAMP

REFP

REFM

REXT

AUCOM

AE5

AUVRM

AE4

AUVRP

AF4

AUVAG

AD4

IC100

LGE3369A (Saturn6 Non RM)

VDDC_1

D16

VDDC_2

D17

VDDC_3

D18

VDDC_4

D19

VDDC_5

D20

VDDC_6

H18

VDDC_7

H19

VDDC_8

H20

VDDC_9

J20

VDDC_10

K20

VDDC_11

L20

VDDC_12

M20

VDDC_13

VDDC_14

VDDC_15

VDDC_16

T22

VDDC_17

VDDC_18

U20

VDDC_19

U22

VDDC_20

VDDC_21

V22

VDDC_22

W11

VDDC_23

W12

VDDC_24

W19

VDDC_25

W20

VDDC_26

W22

VDDC_27

Y22

VDDP_1

VDDP_2

H10

VDDP_3

H11

VDDP_4

H12

VDDP_5

N20

VDDP_6

P20

VDDP_7

VDDP_8

W10

AVDD_AU

AVDD_DDR_1

G12

AVDD_DDR_2

G13

AVDD_DDR_3

H13

AVDD_DDR_4

H14

AVDD_DDR_5

H15

AVDD_DDR_6

H16

AVDD_DDR_7

W14

AVDD_DDR_8

W15

AVDD_DDR_9

W16

AVDD_DDR_10

W17

AVDD_DDR_11

W18

AVDD_MEMPLL_1

H17

AVDD_MEMPLL_2

T20

AVDD_MEMPLL_3

V20

AVDD_LPLL

R20

AVDD_MPLL

AVDD_33_1

AVDD_33_2

AVDD_33_3

AVDD_33_4

AVDD_33_5

AVDD_DM

AVDD_USB

GND_2

E16

GND_3

E17

GND_4

E18

GND_5

GND_6

GND_7

L10

GND_8

L11

GND_9

L12

GND_10

L13

GND_11

L14

GND_12

L15

GND_13

L16

GND_14

L17

GND_15

L18

GND_16

GND_17

M10

GND_18

M11

GND_19

M12

GND_20

M13

GND_21

M14

GND_22

M15

GND_23

M16

GND_24

M17

GND_25

M18

GND_26

GND_27

GND_28

N10

GND_29

N11

GND_30

N12

GND_31

N13

GND_32

N14

GND_33

N15

GND_34

N16

GND_35

N17

GND_36

N18

GND_37

GND_38

GND_39

P10

GND_40

P11

GND_41

P12

GND_42

P13

GND_43

P14

GND_44

P15

GND_45

P16

GND_46

P17

GND_47

P18

GND_48

GND_49

GND_50

R10

GND_51

R11

GND_52

R12

GND_53

R13

GND_54

R14

GND_55

R15

GND_56

R16

GND_57

R17

GND_58

R18

GND_59

GND_60

GND_61

T10

GND_62

T11

GND_63

T12

GND_64

T13

GND_65

T14

GND_66

T15

GND_67

T16

GND_68

T17

GND_69

T18

GND_70

GND_71

W13

GND_72

Y21

GND_73

AA23

R2035

100

R2034

100

EAX60148002-0(LH50)

2 11

MAIN_2

2009.01.19

VDDC : 970mA

VDDP : 102.3mA

AVDD_AU : 36.11mA

AVDD_MEMPLL : 23.77mA

AVDD_LPLL : 4.69mA

AVDD_33 : 281mA

AVDD_DM : 0.03mA

AVDD_OTG : 22.96mA

PI_080719

DSUB

HDMI

to Ursa

TV/MNT

COMP1

AUDIO IN

Close to IC
as close as possible

COMP2

rev 1

rev 0

CVBS

AUDIO OUT

Close to IC
as close as possible

$8.966

LGE Internal Use Only

Summary of Contents for 37LH50YD

Page 1: ...EAD THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LB91B MODEL 37LH50YD 37LH50YD AA North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only P NO MFL60020305 0903 REV00 Printed in Korea ...

Page 2: ...nly Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 BLOCK DIAGRAM 13 EXPLODED VIEW 14 SVC SHEET ...

Page 3: ...d 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 turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path...

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: ...erformance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety IEC EN60065 EMI EN55013 No Item Specification Remark 1 Screen Device 37 wide Color Display module LCD 2 Aspect Ratio 16 9 3...

Page 7: ...480 31 47 59 94 480p 4 720x480 31 50 60 00 480p 5 720x576 15 625 50 00 SDTV DVD 625 Line 6 720x576 31 25 50 00 HDTV 576p 7 1280x720 45 00 50 00 HDTV 720p 8 1280x720 44 96 59 94 HDTV 720p 9 1280x720 45 00 60 00 HDTV 720p 10 1920x1080 31 25 50 00 HDTV 1080i 11 1920x1080 33 75 60 00 HDTV 1080i 12 1920x1080 33 72 59 94 HDTV 1080i 13 1920x1080 56 250 50 HDTV 1080p 14 1920x1080 67 43 67 5 59 94 60 HDTV ...

Page 8: ...emark 1 720 400 31 468 70 08 28 321 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 79 5 WXGA HDCP 6 1360 768 47 72 59 8 84 75 WXGA HDCP 7 1280 1024 63 595 60 0 108 875 SXGA HDCP 8 1920 1080 67 5 60 148 5 WUXGA HDCP 2 PC Mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720...

Page 9: ...ct and check OK message If Error is displayed Check connection between computer jig and set 3 Click Read tab and then load download file XXXX bin by clicking Read 4 Click Connect tab If Can t is displayed check connection between computer jig and set 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message USB DOWNLOAD epk file download 1 Put the USB Stick to the USB sock...

Page 10: ...t 1024 768 ad 00 10 Adjust 1024 768 RGB aa 00 90 End Adjust mode Required equipment factory Service Remote control 3 2 Function Check 1 Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV 1 2 3 COMPONENT 480i 4 RGB PC 1024 x 768 60hz 5 HDMI 6 PC Audio In Display and Sound check is executed by remote control 10 LGE Internal Use Only Copyright 2009 LG Electronics Inc ...

Page 11: ...le from factory JIG model Push The IN STOP KEY after completing the function inspection 4 2 DDC EDID Write RGB 128Byte Connect D sub Signal Cable to D sub Jack Write EDID Data to EEPROM 24C02 by using DDC2B protocol Check whether written EDID data is correct or not For SVC main Ass y EDID have to be downloaded to Insert Process in advance 4 3 DDC EDID Write HDMI 256Byte Connect HDMI Signal Cable t...

Page 12: ...F FF FF FF FF FF FF FF FF FF FF FF FF F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 12 EZ ADJUST 0 Tool Option1 1 Tool Option2 2 Tool Option3 3 Tool Option4 4 Country Group 5 ADC Calibration 6 White Balance 7 Test Pattern 8 EDID D L 9 Sub B C HDMI1 NG HDMI2 NG HDMI3 NG RGB NG Star...

Page 13: ...SDA_3 3V CVBS LCD Module 120Hz MST7323 FRC IC DDR2 256M Qimonda Hynix LVDS Buffer CE6355 Intel Demod CVBS Y Pb Pr RGB H V EEPROM Compone nt 2 AV 1 AV 2 RGB Audio L R USB2 0 USB DP DM MIC2019 O C Protector 5V 5V Serial Flash 2Mbit Serial Flash 32Mbit SPI EEPROM 512K CM3212 Sensor SCL SDA_3 3V SCL SDA HDMI 1 TDA9996 4x1 HDMI Switch HDMI 2 HDMI 3 HDMI 4 5V_HDMI1 HPD1 DDC SCL SDA CLK DATA 5V_HDMI2 HPD...

Page 14: ...electrical and mechanical parts in this chassis 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 manufa...

Page 15: ...1 2 4 3 S6_Reset Q1002 2SC3052 12V_DIP_DET E B C R114 1K 12V_DIP_DET R142 0 R150 30K OPT 3 3V_ST 24V R131 10K R132 OPT POWER_DET 001 V19 001 AL11 12V R115 2 2K 12V_DIP_DET 5V_GENERAL R112 1K 12V_DIP_DET Q1001 2SC3052 12V_DIP_DET E B C R139 OPT PWM1 PWM2 PWM2 R175 100 R177 0 HDMI_EQ_SEL R178 100 C110 1uF OPT BIT_SEL 009 AH21 R182 100 R155 100 NTP_MUTE 007 X18 R117 2 2K R116 2 2K MODEL_OPT_1 001 Q19...

Page 16: ...F 50V DDC_SDA_4 DDC_SCL_4 C210 2 2uF 16V HPD1 R201 100 LGE3369A Saturn6 Non RM IC100 RXACKP F1 RXACKN F2 RXA0P G2 RXA0N G3 RXA1P H3 RXA1N G1 RXA2P H1 RXA2N H2 DDCD_A_DA A1 DDCD_A_CK B2 HOTPLUG_A A2 RXBCKP C3 RXBCKN B1 RXB0P C1 RXB0N C2 RXB1P D2 RXB1N D3 RXB2P E3 RXB2N D1 DDCD_B_DA E1 DDCD_B_CK F3 HOTPLUG_B E2 RXCCKP AE8 RXCCKN AD8 RXC0P AD9 RXC0N AF8 RXC1P AF9 RXC1N AE9 RXC2P AE10 RXC2N AD10 DDCD_...

Page 17: ...V_DDR R307 22 R301 1K 1 R312 56 R315 56 AR310 56 AR301 56 R347 4 7K OPT R325 56 R338 56 1 8V_DDR 1 8V_DDR R329 56 OPT IC301 1 HYB18TC512160B2F 2 5 Qimonda_512M_DDR J2 VREF J8 CK H2 VSSQ2 B7 UDQS N8 A4 P8 A8 L1 NC4 L2 BA0 R8 NC3 K7 RAS F8 VSSQ3 F3 LDM P3 A9 M3 A1 N3 A5 K8 CK R3 NC5 L3 BA1 J7 VSSDL L7 CAS F2 VSSQ4 B3 UDM M2 A10 AP K2 CKE R7 NC6 M7 A2 N7 A6 M8 A0 J1 VDDL K3 WE E8 LDQS P7 A11 K9 ODT A...

Page 18: ... C404 1000pF 50V R442 0 COMP2_R_IN 002 R16 D404 30V AMOTECH COMP2_Pr 004 U12 AV1_CVBS_IN R422 0 D403 5 6V AMOTECH D414 5 6V AMOTECH R418 1K R425 10K D406 30V AMOTECH C409 47pF 50V D409 5 6V AMOTECH D426 5 6V ADMC5M03200L_AMODIODE OPT JK405 KCN DS 1 0089 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DSUB_B 002 D19 DSUB_HSYNC 002 D18 D418 30V EDID_WP 001 AJ20 006 AK7 006 AN3 006 AN12 006 AN17 C412 18pF OPT...

Page 19: ...003 0 1uF 16V P5001 12507WS 12L 1 SCL 2 SDA 3 GND 4 KEY1 5 KEY2 6 5V_ST 7 GND 8 WARM_ST 9 IR 10 GND 11 3 3V 12 PWR_ON 13 GND R5002 100 L5002 BLM18PG121SN1D R5005 0 C5004 100pF 50V C5007 1000pF 50V KEY2 D5001 5 6V AMOTECH SDA_SUB AMP C5002 0 1uF C5005 0 1uF 16V R5003 4 7K C500 0 1uF 16V R508 10K R506 100 Q502 2SC3052 IR_OUT E B C R503 10K IR_OUT IR_OUT R505 47K IR_OUT R504 10K IR_OUT R501 22 IR_OUT...

Page 20: ..._3 16 VSADJ 17 Y4 18 Z4 19 VCC_3 20 Y3 21 Z3 22 GND_4 23 Y2 24 Z2 25 VCC_4 26 Y1 27 Z1 28 GND_5 29 SCL_SINK 30 SDA_SINK 31 HPD_SINK 32 S1 33 S2 34 EQ 35 HPD1 36 SDA1 37 SCL1 38 B11 39 A11 40 VCC_5 41 B12 42 A12 43 GND_6 44 B13 45 A13 46 VCC_6 47 B14 48 A14 49 VDD 50 HPD2 51 SDA2 52 SCL2 53 B21 54 A21 55 VCC_7 56 B22 57 A22 58 GND_7 59 B23 60 A23 61 VCC_8 62 B24 63 A24 64 HPD3 CK _HDMI3 D1 _HDMI1 D...

Page 21: ...06 100V 1N4148W OPT D707 100V 1N4148W OPT C704 10uF 6 3V C700 10uF 6 3V C760 10uF 6 3V L700 BLM18PG121SN1D L701 BLM18PG121SN1D AMP_VCC L703 CB3216PA501E 24V C725 68uF 35V R701 100 R702 100 R705 100 R725 12 R726 12 R714 12 R712 12 R727 12 R728 12 R713 12 R711 12 IC701 NTP 3100L EAN60664001 1 BST1A 2 VDR1A 3 RESET 4 AD 5 DVSS_1 6 VSS_IO 7 CLK_I 8 VDD_IO 9 DGND_PLL 10 AGND_PLL 11 LFM 12 AVDD_PLL 13 D...

Page 22: ...47 10nF 50V 3 3V_ST 12V GND PANEL_CTL 001 AK10 R831 75K 1 8W 1 Q804 2SC3052 E B C C838 0 01uF 25V 3 3V_MEMC Q805 2SC3052 E B C 5V_ST C837 OPT C854 22uF 16V L812 CIC21J501NE POWER_ON RL_ON 5V_USB_SIDE L814 BLM18AG121SN1D L802 BLM18AG121SN1D C890 22uF 16V 5V_TUNER C886 0 1uF 16V C872 0 1uF 16V C883 22uF 16V OPT 3216 C809 0 1uF 16V 3 3V L820 BLM18PG121SN1D 3 3V_AVDD C808 10uF 6 3V L821 BLM18PG121SN1D...

Page 23: ...SET X900 12MHz OPC_EN M_SPI_DO C921 0 1uF R934 1M C902 15pF C900 15pF R935 100 R939 100 R942 100 R945 100 R930 100 R946 100 R929 100 R938 100 R931 100 R943 100 R936 100 R928 100 R965 22 R966 22 R969 22 R974 22 Scanning R982 OPT R970 OPT R980 OPT R986 OPT R984 OPT R985 OPT R981 OPT R973 OPT R971 OPT R979 0 R983 OPT R975 0 Non_Scanning R955 OPT R987 OPT R988 OPT R989 OPT R972 510 OPC_EN_PULL_UP R978...

Page 24: ...09 R4 010 U11 A_URSA_MCLKE 010 U9 A_URSA_BA1 010 AA16 C1022 0 1uF B_URSA_CASZ AR1005 22 1 8V_FRC_DDR URSA_A 0 12 URSA_DQM1 009 W4 C1019 0 1uF A_URSA_CASZ 1 8V_FRC_DDR C1031 0 1uF AR1004 56 AR1010 22 B_URSA_RASZ 010 R17 AR1002 56 URSA_DQSB1 009 X4 B_URSA_BA0 R1071 1K 1 AR1003 56 C1038 0 1uF URSA_RASZ C1011 0 1uF C1035 0 1uF 1 8V_FRC_DDR C1029 0 1uF 1 8V_FRC_DDR AR1001 56 URSA_MCLK1 009 AA4 C1015 0 ...

Page 25: ... C1152 0 1uF 16V C1151 0 1uF 16V 1 8V_TUNER C1148 0 1uF 16V 3 3V_TUNER C1153 0 1uF 16V IC1105 AZ1117H 1 8TRE1 EH13A 2 OUTPUT 3 INPUT 1 ADJ GND IC1103 AZ1117H 3 3 2 OUTPUT 3 INPUT 1 ADJ GND C1155 22uF 16V GND C1147 0 1uF 16V C1154 22uF 16V L1112 BLM18AG121SN1D C1150 22uF 16V L1111 BLM18AG121SN1D 5V_TUNER C1149 0 1uF 16V IC1102 XC5000 1 VDDA_1 2 IN1 3 GND_1 4 IN2 5 GND_2 6 EXTCHOKE 7 GND_3 8 VDDA_2 ...

Page 26: ......

Page 27: ...ff when on off while viewing power auto on off 8 C Audio error No audio Normal video 9 Wrecked audio discontinuation noise 10 D Function error No response in remote controller key error recording error memory error 11 External device recognition error 12 E Noise Circuit noise mechanical noise 13 F Exterior error Exterior defect First of all Check whether there is SVC Bulletin in GCSC System for th...

Page 28: ...nd Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Electronics 6 3 Standard Repair Process Revised date 2008 3 26 1 13 LCD TV Error 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 D Power B D LVDS C...

Page 29: ... MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio Established date Electronics 6 3 Revised date 2008 3 26 2 13 LCD TV Error symptom Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 30: ...Normal Picture Y N Y Close Normal Picture Y Close Menu Setup Booster By using Digital signal level meter By using Diagnostics menu on OSD Menu Setup Diagnostic Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N N Normal Picture Y Close N Standard Repair Process Established date Electronics 6 3 Revised date 200...

Page 31: ...device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error N Y End Replace module Request repair for external device cable Replace T Con Board N Y Color error Other Module Color error Check Test pattern Standard Repair Process Established date Electronics 6 3 Revised date 2008 3 26 4 13 LCD TV Error symptom Copyright ⓒ 200...

Page 32: ... etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen normal N Y Check S W Version Y N Che...

Page 33: ...mal voltage Replace Power B D Y Standard Repair Process Established date Electronics 6 3 Revised date 2008 3 26 6 13 LCD TV Error symptom 09 years new model apply mechanical power switch to reduce power consumption in stand by status If mechanical power switch off Doesn t turn on by remote control Doesn t appear LED light Please refer to the A21 Page Stand By Red Operating Blue Check Repair Mechan...

Page 34: ...ower off by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reservated Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Downloa...

Page 35: ...d and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video Disconnection Established date Electronics 6 3 Revised date 2008 3 26 8 13 LCD TV Error symptom Standard Repair Process Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 36: ...ck other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 20V or 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Established ...

Page 37: ... Normal Voltage Close N N Check 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem Check IR Output signal Normal Signal N Y Repair Replace IR B D N Replace Main B D Y Y N Check R C Operation Normal operating Y Check Repair Cable connection Connector solder Normal operating Close N Check Replace Assembly status Key PCB tool Check Key Output signal Y Normal operating ...

Page 38: ...cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Electronics 6 3 Revised date 2008 3 26 11 13 LCD TV Error symptom Standard Repair Process Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 39: ...models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise With Inverter Module Without Inverter Module Established date Electronics 6 3 ...

Page 40: ...oller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Electronics 6 3 Revised date 2008 3 26 13 13 LCD TV Error symptom Standard Repair Process Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 41: ...alog TV 5 AV Scart CVBS S Video 6 Component 7 RGB D SUB 8 HDMI 9 Audio Problem All Input 10 Digital TV 11 Analog TV 12 AV Component RGB HDMI PC HDMI DTV 13 AV Audio out No Audio Headphone SPDIF 14 USB Remocon Problem USB no connect Remocon 15 Intelligent Sensor Intelligent Sensor Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 42: ...26V Replace MAIN B D IC805 YES NO MAIN B D L809 1 8V Replace MAIN B D IC807 YES NO Check MAIN B D X100 Clock 12MHz Replace MAIN B D IC100 YES NO Replace MAIN B D IC102 NAND FLASH YES Replace MAIN B D IC103 Serial Flash NO Replace MAIN B D IC300 IC301 DDR2 Memory NO Replace MAIN B D IC100 NO Making Revision 2009 2 1 1 25 LCD TV Symptom Power Up Boot Fail Copyright ⓒ 2009 LG Electronics Inc All righ...

Page 43: ...AIN B D L810 12V Replace MAIN B D Q805 NO Replace Main Board YES P800 Pin 13 14 12V P800 Pin 17 18 24V Check LVDS Cable OK YES Replace LVDS Cable NO Making Revision 2009 2 1 LCD TV Symptom No OSD 2 25 Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 44: ...AIN B D IC808 MAIN B D L1113 1 8V Replace MAIN B D IC1105 YES NO YES MAIN B D X1101 Clock NO Replace MAIN B D X1101 Making Revision 2009 2 1 LCD TV Symptom Digital TV Video Problem 3 25 Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ...5V YES MAIN B D L1112 3 3V NO Replace MAIN B D IC1103 YES NO Replace MAIN B D IC808 MAIN B D L1113 1 8V Replace MAIN B D IC1105 YES NO YES MAIN B D X1101 Clock NO Replace MAIN B D X1101 Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 46: ...Check MAIN B D R420 Video Signal NO YES Check MAIN B D C217 Video Signal Replace MAIN B D C217 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 LCD TV Symptom AV1 CVBS No Video Problem 5 25 Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ...Check MAIN B D R465 Video Signal NO YES Check MAIN B D C211 Video Signal Replace MAIN B D C211 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 LCD TV Symptom AV2 CVBS No Video Problem 6 25 Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 48: ...Signal NO YES Check MAIN B D C200 C203 Y C201 Pb C202 Pr Video Signal Replace MAIN B D C200 or C203 or C201 or C202 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 7 25 LCD TV Symptom Component1 No Video No Color Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ...Signal NO YES Check MAIN B D C214 C209 Y C215 Pb C216 Pr Video Signal Replace MAIN B D C214 or C209 or C215 or C216 NO Replace MAIN B D IC 100 YES Making Revision 2009 2 1 8 25 LCD TV Symptom Component2 No Video No Color Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...eo R2030 HSYNC R2031 VSYNC Replace MAIN B D C207 or R2030 or R2031 NO Replace MAIN B D IC 100 YES MAIN B D JK405 Pin 2 Video signal R446 has Vsync R447 has Hsync Making Revision 2009 2 1 9 25 LCD TV Symptom RGB No Video Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ...17 GREEN C2018 BLUE Video Signal Replace MAIN B D C2016 or C2017 or C2018 NO Replace MAIN B D IC 100 YES MAIN B D JK405 Pin 3 BLUE Pin 2 GREEN Pin 1 RED Video signal Making Revision 2009 2 1 10 25 LCD TV Symptom RGB No Color Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...the ADJUST MENU EDID OK YES Download EDID Refer to Adjustment Spec NO NO Replace MAIN B D IC601 HDCP KEY Making Revision 2009 2 1 11 25 LCD TV Symptom HDMI 1 4 All No Video Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ...N B D JACK Check JK600 HDMI1 JK601 HDMI2 JK602 HDMI3 JK603 HDMI4 YES Making Revision 2009 2 1 12 25 LCD TV Symptom HDMI1 or 2 or 3 or 4 No Video Problem Check MAIN B D IC600 YES Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...Replace Speaker Cable NO Replace MAIN B D IC807 NO YES MAIN B D L824 1 8V MAIN B D Check R701 R702 R705 Signal YES Replace MAIN B D IC100 NO Replace MAIN B D IC701 NO Making Revision 2009 2 1 13 25 LCD TV Symptom All Source no Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ...K YES Replace MAIN B D IC 100 Making Revision 2009 2 1 14 25 LCD TV Symptom Digital TV No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ... Video OK YES Check MAIN B D R2046 Signal SIF NO Replace MAIN B D IC100 YES Making Revision 2009 2 1 15 25 LCD TV Symptom Analog TV No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ...nd signal YES NO Replace MAIN B D IC 100 AV1 Video OK YES Check MAIN B D JK402 Replace MAIN B D JK402 NO YES Making Revision 2009 2 1 16 25 LCD TV Symptom AV1 No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...und signal YES NO Replace MAIN B D IC 100 AV2 Video OK YES Check MAIN B D JK402 Replace MAIN B D JK402 NO YES Making Revision 2009 2 1 17 25 LCD TV Symptom AV2 No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 59: ...ignal YES NO Replace MAIN B D IC 100 Component Video OK YES Check MAIN B D JK402 Replace MAIN B D JK402 NO YES Making Revision 2009 2 1 18 25 LCD TV Symptom Component1 No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 60: ... signal YES NO Replace MAIN B D IC 100 Component Video OK YES Check MAIN B D JK402 Replace MAIN B D JK402 NO YES Making Revision 2009 2 1 19 25 LCD TV Symptom Component2 No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ...nd signal YES NO Replace MAIN B D IC 100 RGB Video OK YES Check MAIN B D JK401 Replace MAIN B D JK401 NO YES Making Revision 2009 2 1 20 25 LCD TV Symptom RGB HDMI PC No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...D Refer to Adjustment Spec NO Check the HDMI Cable Replace MAIN B D IC100 YES Making Revision 2009 2 1 21 25 LCD TV Symptom HDMI DTV No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 63: ...ES Check MAIN B D JK403 Replace MAIN B D JK403 NO YES NO Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009 2 1 22 25 LCD TV Symptom SPDIF No Audio Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ... YES Check MAIN B D R826 5V Replace MAIN B D IC808 YES NO Replace POWER B D YES YES Replace MAIN B D IC 100 Check MAIN B D JK406 OK YES NO Replace MAIN B D JK406 Making Revision 2009 2 1 23 25 LCD TV Symptom USB No Connect Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ... D P5001 Wafer Connector YES NO Replace it YES Replace IR B D Making Revision 2009 2 1 24 25 LCD TV Symptom Remote Control Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ... P5001 Wafer Connector YES YES NO Replace it Replace IR B D Making Revision 2009 2 1 25 25 LCD TV Symptom Intelligent Sensor Problem Copyright ⓒ 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

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