manualshive.com logo in svg

LG 19LV2500, Service Manual

The LG 19LV2500 is an exceptional television with a compact design perfect for smaller spaces. With its crystal-clear display and advanced features, this TV provides an immersive viewing experience. Discover the full potential of this product with the free Owner's Manual, available for download from manualshive.com.

Share
Download
background image

THERMAL

THERMAL

THERMAL

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.

SMALL_TN_POWER

R7511

6.8K

OPT

C7864

100pF

50V

OPT

C7547
0.1uF
16V

C7542
3.3uF
50V

Adapter

POWER_ON/OFF2_1

R432

330K

1/10W

5%

C7959
0.1uF
16V

R7544
105K

1/10W
1%

Adapter

C7550
10uF
25V

+3.5V_ST

C7559
4.7uF

16V

L7505

POWER_ON/OFF2_1

R7540
120K

1%

Adapter

L7914

BLM18PG121SN1D

NON_Adapter

1608

L7514
3.6uH

NR8040T3R6N

+3.5V_ST

C439

100pF

50V

R444

22K

1

%

+2.5V_Normal

C7561

1uF
25V

C7527

0.1uF

50V

Adapter

L423

3.6uH

NR8040T3R6N

R7515
10K

C7953

2200pF

IC7861

AOZ1072AI-3 

3

AGND

2

VIN

4

FB

1

PGND

5

COMP

6

EN

7

LX_1

8

LX_2

R7548

2.7K

1%

Adapter

R7542

22K

OPT

R7955

10K

1%

C7867
0.1uF
16V

R7547-*1

11K

1%

LIPS

C7923
0.1uF
50V

+5V_USB

IC407

TPS54319TRE

1

VIN_1

3

GND_1

7

COMP

9

SS/TR

10

PH_1

11

PH_2

12

PH_3

13

BOOT

14

PWRGD

15

EN

16

VIN_3

5

AGND

8

RT/CLK

6

VSENSE

4

GND_2

2

VIN_2

17

EP[GND]

L7511

R7567

10K

1%

C472
22uF

10V

C7862
10uF
25V

R7832

10K

NON_Adapter

R7551

22K

R7864

2.2K

PANEL_DISCHARGE_RES

POWER_ON/OFF2_2

R445

10K

IC7506

AOZ1073AIL-3 

3

AGND

2

VIN

4

FB

1

PGND

5

COMP

6

EN

7

LX_1

8

LX_2

C7958
0.1uF
16V

R7572

0

NON_Adapter

R7953

51K

1%

+3.5V_ST

R7522
10K

OPT

R7581

1.6K

1/8W

1%

Adapter

+12V/+15V

C7922
0.1uF
50V

C7865
22uF
16V

C7569
0.1uF
16V

+1.5V_DDR

C7957
0.1uF
16V

OPT

Q7521

Adapter

AO3407A

G

D

S

C7529
10uF
16V

OPT

R455
15K

1/16W

5%

Q7505
2SC3052

E

B

C

+5V_Normal

C7933
0.01uF
50V

C7578
0.1uF
16V

IC7509

NCP803SN293

PWR_DET_ON_SEMI

1

GND

3

VCC

2

RESET

R7559

12K

C7525

0.01uF

25V

R7538

6.8K

1%

Adapter

R442

24K

1%

R7862
22K

Adapter

+12V/+15V

L420

Q7522
AO3438

FRC

G

D

S

C7519
1uF
25V

Adapter

L7508
4.7uH

SP-7850_4.7

Adapter

R7525

68K

1/16W

5%

Adapter

C7861
10uF
25V

C7502
0.1uF
50V

R7586
100

1%

LIPS

Q7500

E

B

C

+12V/+15V

L413

C467

4700pF

50V

Q7503
2SC3052

E

B

C

C7552
10uF
25V

R7565

51K

1%

C453
22uF

10V

C7541

1uF
25V

OPT

POWER_ON/OFF2_2

+3.5V_ST

POWER_ON/OFF2_2

+12V/+15V

+24V/+15V

R7558

10K

+1.5V_FRC_DDR

R7552

1

+3.3V_Normal

L7504

MLB-201209-0120P-N2

Adapter

C7581

4.7uF

OPT

R7583

0

1/16W

5%

LIPS

POWER_ON/OFF1

INV_CTL

RL_ON

IC7505

AZ2940D-2.5TRE1

2

GND

3

VOUT

1

VIN

+3.5V_ST

C7551
10uF
25V

R7529
100K

Adapter

R452

330K

1/16W

5%

C7526
0.1uF
16V

WLED_ENABLE

R7562

27K

1%

R7564

10K

1%

R7866

12K

L7509
3.6uH

NR8040T3R6N

Adapter

C7567
0.1uF
16V

C7570
0.1uF
16V

C7533
0.1uF
50V

Adapter

C7532

10uF

25V

Adapter

C7863

2200pF

PANEL_VCC

R7570

18K

Adapter

Q7507
2SC3052

E

B

C

R7548-*1

3.6K

1%

LIPS

L7513
3.6uH

NR8040T3R6N

R7585
100K LIPS

C456
22uF

10V

POWER_DET

RL_ON

C7956
0.1uF
16V

C7538
10uF
10V

Adapter

R7860

10K

Adapter

POWER_ON/OFF2_2

C7562

100pF

50V

OPT

D7500

MBRA340T3G

Adapter

L7912

MLB-201209-0120P-N2

Adapter

+1.26V_VDDC

R7543

30K

1/10W

1%

Adapter

R7537
200K

1/8W
1%

Adapter

+5V

+3.5V_Normal

R7870

10K

1%

R436
7.5K

1/16W

5%

Q7520

Adapter

E

B

C

C444
0.1uF
16V

Q7508

AO3407A

G

D

S

R7867

10K

IC7507

AOZ1072AI-3 

3

AGND

2

VIN

4

FB

1

PGND

5

COMP

6

EN

7

LX_1

8

LX_2

C7537
10uF

25V

Adapter

R7590

120K

OPT

R7582
100

1%

+24V/+15V

C7557
0.1uF
16V

C463
100pF
50V

L7862
3.6uH

NR8040T3R6N

C7568

0.1uF

16V

RL_ON

C461
10uF
10V

C7555

0.1uF

C468
0.1uF
16V

C470
0.1uF
16V

+24V/+15V

L7951

R7521
10K

C430
10uF
10V

C7524
220pF

50V

Adapter

C7545

0.1uF

50V

Adapter

R7545
10K

C7514
0.1uF

50V

+3.5V_ST

+1.5V_DDR

C7924
0.1uF
50V

Adapter

R7523

22K

PANEL_CTL

C7952
10uF
25V

R7516
10K

+24V_LED_driver

Q7502
2SC3052

E

B

C

L415

3.6uH

NR8040T3R6N

C7955
22uF
16V

R7519

22

1/16W

5%

Adapter

+24V/+15V

R464

10K

C7932
3.3uF
50V

IC7512

NCP803SN293

LIPS_PWR_DET_ON_SEMI

1

GND

3

VCC

2

RESET

C448

3300pF

50V

C7540
3.3uF
50V

Adapter

POWER_ON/OFF2_1

R7954

1.5K

1%

C447

0.1uF

16V

R7527

22K

C7560

2200pF

R7861
27K

Adapter

C7517

68uF
35V

Q7506

AO3407A

G

D

S

R441
75K

1/8W

1%

C7522
1uF
50V

Adapter

R7561
100K

+12V/+15V

R7571

22

Adapter

C7531
4.7uF

16V

C7549
10uF
25V

R7500
10K

Adapter

R7555
10K

C441

0.1uF

16V

R7569

10K

OPT

R7503
22K

L7515

CIC21J501NE

+3.3V_Normal

+3.5V_ST

R7566

1.5K

1%

+5V_Normal

C7556
10uF
10V

C7536
3.3uF
50V

Adapter

C7580
4.7uF

10V

OPT

POWER_ON/OFF2_2

Q7504

SI4124DY-T1-GE3(VISHAY)

Adapter

3

S_3

2

S_2

4

G

1

S_1

5

D_1

6

D_2

7

D_3

8

D_4

C475

0.1uF

16V

+24V/+15V

IC7502

MP8670DN-LF-Z

Adapter

3

VCC

2

BST

4

BG

1

SW

5

GND

6

FB

7

EN/SYNC

8

IN

+12V/+15V

R7531

2.7K

C7926
0.01uF

50V

Adapter

C476
22uF

10V

C7951
10uF
25V

C7554

0.01uF

C7544
0.1uF
50V

Adapter

R7501
27K

R7547

15K

1%

Adapter

R7560

10K

R7865
0

Adapter

R7591

10K

FRC

IC7503

MP4460DQ-LF-Z

Adapter

3

EN

2

SW_2

4

COMP

1

SW_1

5

FB

6

GND

7

FREQ

8

VIN_1

9

VIN_2

10

BST

11

EP_GND

L7952
3.6uH

NR8040T3R6N

C7571
10uF
10V

Adapter

C7503
2.2uF

50V

C7925
2.2uF

Adapter

50V

JK7500

JPD003N-M432-4F

Adapter

GND

SW

24V

+3.5V_Normal

C7866
0.1uF
16V

R7530

22K

C431
0.1uF
16V

R7584

27K

1/16W

1%

OPT

IC7951

AOZ1073AIL-3 

3

AGND

2

VIN

4

FB

1

PGND

5

COMP

6

EN

7

LX_1

8

LX_2

R457

47K

1%

C7505

0.01uF

50V

R449
56K

1/16W

1%

C7565
100pF

50V

R7517

10K

OPT

L7861

R7863

2.2K

PANEL_DISCHARGE_RES

R7563

4.7K

1%

+24V

R7514
1K

C462

0.1uF

16V

L7913

CPI2520NHL3R3ME

Adapter

2520

3.3uH

R7952

10K

+24V_LED

C7954

100pF

50V

OPT

C7543
0.1uF
50V

Adapter

R7556

0

C7501
0.1uF
50V

+24V_LED

C7553
0.1uF
16V

Q7501

AO3407A

G

D

S

C7868

0.1uF

50V

C7869

0.1uF

50V

C7566
22uF
16V

C7563
22uF
16V

R7557

12K

C7558

2200pF

R7951

12K

IC403

SN1007054RTER

1

VIN_1

3

GND_1

7

COMP

9

SS

10

PH_1

11

PH_2

12

PH_3

13

BOOT

14

PWRGD

15

EN

16

VIN_3

5

AGND

8

RT/CLK

6

VSENSE

4

GND_2

2

VIN_2

17

EP[GND]

C7961
22uF
16V

C7960
0.1uF
16V

+5V

C7962
0.1uF
16V

IC7952

AP1117EG-13 

1

ADJ/GND

2 OUT

3

IN

R7869

51K

1%

R7868

24K

1%

110

R7956

R7957

330

R7958

1

1/10W

+5V_General

C488

0.01uF

50V

C465

0.01uF

50V

$0.37

Vout=(1+R1/R2)*0.8

2A

24V-->3.48V

+2.5V

2000 mA

+5V_USB

Switching noise reducing [MPS recommend]

R1

Vd=550mV

$ 0.145

3A

Vout=(1+R1/R2)*0.8

4A -> 3A modify 090916

15V-->3.56V

close to pin

New item

AO3407A Vgs : 10.8V(24V input)

2A

R1

24V->15V

+3.5V_Normal

+3.3V_Normal

3A

1074 mA

LED Driver Power

300 mA

+15V Control

S7M core 1.26V volt

3A

2A

$0.148

close to IC7502

090916

R2

MAX 1A

R2

1934 mA

+5V to LDO(IC7952)

R2

R2

Vout=(1+R1/R2)*0.8

S7M DDR 1.5V

+5V_Normal

Vout=0.8*(1+R1/R2)

$0.17

R1

Vout=0.827*(1+R1/R2)=1.521V

 Max 1A

R2

R1

AMP_VCC

real output : 12.3V

UNDER CHECKING

R1

$0.21

R2

Vout=0.8*(1+R1/R2)

AO3407A Vgs : 8.3V(15V input)

3A

$ 0.165

R1

R2

ST_3.5V-->3.5V --> 3.375V

PANEL_POWER

24V->3.5V

R1

Placed on SMD-TOP

Power_DET

AO3407A Vgs : 10.8V

+1.5V_DDR_FRC

3.3K -> 1K (threshold voltage up)

POWER_TN

20101115

32

GP2R

LDO for Tuner, Hongsu, 1115

6.8V

Copyright © 2011 LG Electronics. Inc. All rights reserved. 

Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 19LV2500

Page 1: ...RECAUTIONS IN THIS MANUAL CHASSIS LD01S MODEL 19LV2500 250A 250N 250U MODEL 19LV2500 250A 250N 250U ZA 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 MFL67002102 1102 REV00 ...

Page 2: ...right 2011 LG Electronics Inc All rights reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 BLOCK DIAGRAM 15 EXPLODED VIEW 16 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...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 t...

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 repla...

Page 6: ...Netherlands Switzerland Hungary Austria Slovenia Sweden Denmark Finland Norway Bulgaria DTV T Analog UK France Spain Italy Belgium Russia Luxemburg Greece Czech Croatia Turkey Moroco Ireland Latvia Estonia Lithuania Poland Portugal Romania Ukraine Analog Only Kazakhstan Albania Bosnia Serbia Slovakia 2 Broadcasting system 1 PAL BG 2 PAL DK 3 PAL I I 4 SECAM L L 5 DVB T C S ID TV 3 Receiving system...

Page 7: ...x1080 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 5 60 HDTV 1080p No Specification Proposed Remark Resolution H freq kHz V freq Hz Pixel Clock MHz 1 720 400 31 468 70 08 28 321 For only DOS mode 2 640 480 31 469 59 94 25 17 VESA Input 848 480 60 Hz 852 480 60 Hz 640 480 60 Hz Display 3 800 600 37 8...

Page 8: ...4 25 HDCP 8 1280 1024 63 981 60 02 108 875 SXGA HDCP FHD model 9 1920 1080 67 5 60 148 5 WUXGA HDCP FHD model 2 PC Mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 480 31 469 31 5 59 94 60 27 00 27 03 SDTV 480P 2 720 576 31 25 50 54 SDTV 576P 3 1280 720 37 500 50 74 25 HDTV 720P 4 1280 720 44 96 45 59 94 60 74 17 74 25 HDTV 720P 5 1920 1080 33 72 33 75 59 94 60 74 17 7...

Page 9: ... 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 1 Put the USB Stick to the USB socket 2 Automatically d...

Page 10: ...er Adjust Mode xb 00 40 Component1 Input 480i ad 00 10 Adjust 480i Comp1 xb 00 60 RGB Input 1024 768 ad 00 10 Adjust 1024 768 RGB aa 00 90 End Adjust mode Required equipment Adjustment R C 3 2 Function Check Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV SCART1 SCART2 CVBS 3 COMPONENT 480i 4 RGB PC 1024 x 768 60 Hz 5 HDMI 6 PC Audio In Display and Sound check i...

Page 11: ...and unplug AC cable For correct it to the model s module from factory Jig model Push the IN STOP key after completing the function inspection And Mechanical Power Switch must be set ON 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 Assembly EDID have to be...

Page 12: ... EDID For Analog EDID 0 1 2 3 4 5 6 7 8 9 A B C D E F 00 00 FF FF FF FF FF FF 00 1E 6D a b 10 c 01 03 68 10 09 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 81 C0 61 40 45 40 31 40 01 01 30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88 40 35 00 A0 5A 00 00 00 1C 01 1D 00 72 51 D0 1E 20 50 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A 60 3E 1F 46 10 00 0A 20 20 20 20 20 20 d 70 d 00 e 80 FF F...

Page 13: ...bps Connect RS232 Signal Cable to RS 232 Jack Write Serial number by use RS 232 Must check the serial number at the Diagnostics of SET UP menu Refer to below 5 1 Signal TABLE CMD A0h LENGTH 85 94h 1 16 bytes ADH EEPROM Sub Address high 00 1F ADL EEPROM Sub Address low 00 FF Data Write data CS CMD LENGTH ADH ADL Data_1 Data_n Delay 20ms 5 2 Command Set Description FOS Default write 7mode data write...

Page 14: ... in LGset 1 check the method of CI Key value a check the method on Instart menu b check the method of RS232C Command 1 into the main ass y mode RS232 aa 00 00 2 check the key download for transmitted command RS232 ci 00 10 3 result value normally status for download OKx abnormally status for download NGx 2 Check the method of CI Key value RS232 1 into the main ass y mode RS232 aa 00 00 2 Check the...

Page 15: ... 41P SPI Flash 2Mb SYSTEM DDR3 X 16 X 1 1Gb Tuner_SI F SCL SDA CI _TS_DATA 7 0 CLK Valid Sync CI _DATA 7 0 CI _ADDR 14 0 FE_TS_DATA 0 CLK Valid Sync USB_DM DP HP_OUT DSUB_RGB HVsync DDC_SDA UART_TX PC_ Audio I N SPDI F_OUT Debug _TX RX SC_CVBS RGB LR_I N SC_VI DEO LR_OUT AV_CVBS LR_I N COMP_ YPbPr LR_I N HDMI _TMDS HPD CEC HDMI _TMDS HPD CEC HDMI _TMDS HPD CEC I 2S_I F SCL SDA 30P Side Rear DATA V...

Page 16: ...l 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 manufacturer IM...

Page 17: ...E24 C2M LLV2N BLUE 0 AF24 C3P LLV4P AF23 C3M LLV4N AD22 C4P LLV5P AE22 C4M LLV5N AF22 DCKP TCON5 AD19 DCKM TCON4 AE19 D0P LLV6P AD21 D0M LLV6N AE21 D1P LLV7P AF21 D1M LLV7N AD20 D2P LLV8P AE20 D2M LLV8N AF20 D3P TCON3 AF19 D3M TCON2 AD18 D4P TCON1 AE18 D4M TCON0 AF18 GPIO0 TCON15 HSYNC VDD_ODD AB22 GPIO1 TCON14 VSYNC VDD_EVEN AB23 GPIO2 TCON7 LDE GCLK4 AC23 GPIO3 TCON6 LCK GCLK2 AC22 FRC_GPIO0 UAR...

Page 18: ...D1 B_RX0N D2 B_RX1P E2 B_RX1N E3 B_RX2P F3 B_RX2N E1 DDCDB_DA GPIO26 D4 DDCDB_CK GPIO25 E4 HOTPLUGB GPIO20 D5 C_RXCP AA2 C_RXCN AA1 C_RX0P AB1 C_RX0N AA3 C_RX1P AB3 C_RX1N AB2 C_RX2P AC2 C_RX2N AC1 DDCDC_DA GPIO28 AB4 DDCDC_CK GPIO27 AA4 HOTPLUGC GPIO21 AC3 D_RXCP A2 D_RXCN A3 D_RX0P B3 D_RX0N A1 D_RX1P B1 D_RX1N B2 D_RX2P C2 D_RX2N C3 DDCDD_DA GPIO30 B4 DDCDD_CK GPIO29 C4 HOTPLUGD GPIO22 E5 CEC G...

Page 19: ...048 22 3 5V_ST R1019 22 R4035 4 7K NEW_SUB R4034 4 7K NEW_SUB C1008 15pF R1006 10K OPT R1011 10K TACT_KEY 3 5V_ST 3 5V_ST R1076 22 MICOM_DEBUG AMP_MUTE POWER_ON OFF1 LED_R BUZZ LED_B LG_LOGO C1006 0 1uF S7_NEC_TXD R1052 10K NEC_SCL R1018 22 R1074 10K GP3 MICOM_RESET FLMD0 R1047 20K 1 16W 1 R1041 22 R1056 22 R1037 22 NEC_ISP_Rx S T_SCL 3 5V_ST RL_ON NEC_EEPROM_SDA MICOM_RESET EDID_WP R1055 22 R1043...

Page 20: ... USB1_OCD SIDE_USB_DP C1451 22uF 16V R1459 2K 1 8W 1 5V_USB USB1_CTL R1458 2K 1 8W 1 R1455 4 7K OPT SIDE_USB_DM L1451 MLB 201209 0120P N2 120 ohm R1454 10K 3 3V_Normal R1451 47 L1451 1 CIS21J121 JK1450 3AU04S 305 ZC LG USB_JACK 1 2 3 4 5 IC1450 AP2191DSG EAN61849601 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_1 7 OUT_2 8 NC JK1450 1 3AU04S 345 ZC H LG USB_JACK_LV3400 1 2 3 4 5 D1451 RCLAMP0502BA OPT 0 07...

Page 21: ... DDC_SCL_2 BSS83 Q805 S B D G CEC_REMOTE_NEC DDC_SCL_4 GND HDMI_CEC CK _HDMI4 JP806 R854 68K R875 22 R835 3 3K HPD1 HPD4 D0 _HDMI1 R878 22 HDMI_CEC D0 _HDMI2 R804 1 8K R897 1K C810 0 1uF 16V C801 0 1uF 16V D0 _HDMI4 D803 AVRL161A1R1NT OPT 5V_HDMI_1 BSS83 Q806 S B D G R876 22 C805 0 1uF 16V DDC_SDA_1 R893 10K IC804 AT24C02BN SH T HDMI_SIDE_ATMEL 3 A2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC JK801 EAG...

Page 22: ...N_GND 8 BLUE_GND 9 NC 10 SYNC_GND 11 GND_2 12 DDC_DATA 13 H_SYNC 14 V_SYNC 15 DDC_CLOCK 16 SHILED R1107 15K JK1103 JST1223 001 1 GND 2 VCC 3 VINPUT 4 FIX_POLE 3 3V_Normal R1135 75 R1155 1K HP_LOUT 002 V7 C1126 68pF 50V OPT C1119 10uF 16V SPDIF_OUT 002 T18 D1109 30V C1129 0 1uF 16V PC_R_IN 002 S12 R1129 3 3K R1137 75 3 3V_Normal D1101 5 6V OPT AMOTECH EDID_WP R1147 1K SIDE_HP_MUTE IC1105 AT24C02BN ...

Page 23: ...1101 SPG09 DB 009 1 2 3 4 5 6 7 8 9 10 JP1121 IC1101 MAX3232CDR EAN41348201 3 C1 2 V 4 C2 1 C1 6 V 5 C2 7 DOUT2 8 RIN2 9 ROUT2 10 DIN2 11 DIN1 12 ROUT1 13 RIN1 14 DOUT1 15 GND 16 VCC S7_NEC_TXD D1108 30V CDS3C30GTH OPT C1102 0 1uF JP1122 C1106 0 1uF S7_NEC_RXD C1103 0 1uF C1101 0 33uF C1104 0 1uF 3 5V_ST D1107 30V CDS3C30GTH OPT R1123 100 C1105 0 1uF RS232C 20101023 GP2R RS232C_9PIN 10 Copyright 2...

Page 24: ..._DQU5 DDR2_DQ12 K26 B_DDR3_DQU6 DDR2_DQM0 G25 B_DDR3_DQU7 DDR2_DQ14 K24 H5TQ1G63DFR H9C IC1202 DDR_1333_HYNIX EAN61828901 A0 N3 A1 P7 A2 P3 A3 N2 A4 P8 A5 P2 A6 R8 A7 R2 A8 T8 A9 R3 A10 AP L7 A11 R7 A12 BC N7 A13 T3 NC_5 M7 BA0 M2 BA1 N8 BA2 M3 CK J7 CK K7 CKE K9 CS L2 ODT K1 RAS J3 CAS K3 WE L3 RESET T2 DQSL F3 DQSL G3 DQSU C7 DQSU B7 DML E7 DMU D3 DQL0 E3 DQL1 F7 DQL2 F2 DQL3 F8 DQL4 H3 DQL5 H8 ...

Page 25: ...ormal IC1401 1 W25Q80BVSSIG S_FLASH_MAIN_WINBOND 3 WP IO2 2 DO IO1 4 GND 1 CS 5 DI IO0 6 CLK 7 HOLD IO3 8 VCC R1401 0 OPT FLASH_WP SPI_SDI R1405 33 SPI_SDO SPI_SCK SPI_CS 3 3V_Normal 3 3V_Normal R1404 4 7K R1403 10K Q1401 KRC103S OPT E B C C1401 0 1uF IC1401 MX25L8006EM2I 12G S_FLASH_MAIN_MACRONIX 3 WP 2 SO SIO1 4 GND 1 CS 5 SI SIO0 6 SCLK 7 HOLD 8 VCC SFLASH_1MB 20101023 13 GP2R Copyright 2011 LG...

Page 26: ...F C539 50V 0 1uF C509 C528 10uF 35V R520 12 0 1uF C526 50V C511 10uF 10V OPT C545 22pF 50V OPT C434 0 1uF 16V 0 1uF C538 50V SPK_L R503 100 C531 390pF 50V 1 8V_AMP R514 100 C522 1uF 25V 0 1uF C527 50V POWER_DET C525 22000pF 50V Q501 2SC3052 E B C D501 100V 1N4148W OPT C503 10uF 10V OPT AUD_LRCH R508 3 3K C530 390pF 50V C534 0 47uF 50V 1 8V_AMP SPK_R C546 22pF 50V OPT C517 1uF 25V L502 BLM18PG121SN...

Page 27: ...70K REAR_AV R1664 33K EU_OPT C1618 4700pF EU_OPT R1668 10K EU_OPT SC1 COMP1_DET C1644 10uF 16V EU_OPT R4221 0 EU_OPT C1662 330pF 50V REAR_AV AV_L_IN D1607 5 6V NON_EU C1612 330pF 50V DTV MNT_L_OUT D1601 5 6V OPT COMP2_Pb D1716 30V OPT D1602 30V OPT 12V 15V C1621 47uF 16V EU_OPT 0 R4210 EU_OPT C1620 100uF 16V EU_OPT DTV MNT_R_OUT SC_RE1 R1685 10K REAR_AV AV_CVBS_DET REC_8 R1626 470K C1664 0 01uF 2S...

Page 28: ... L1902 BLM18PG121SN1D R1901 47 CI_MDI 6 CI_MDI 2 PCM_WAIT CI_ADDR 4 C1903 0 1uF 16V CI_TS_DATA 5 PCM_IOWR PCM_A 12 R1924 10K CI_TS_DATA 1 CI_ADDR 12 R1923 10K OPT GND AR1906 33 PCM_A 11 CI_CD1 PCM_OE CI_IORD R1913 10K CI_IOWR AR1909 33 CI_MISTRT R1915 47 R1917 10K 3 3V_CI 5V_Normal 5V_Normal CI_MDI 6 CI_ADDR 9 AR1907 33 R1912 10K OPT PCM_A 1 PCM_A 7 PCM_IRQA AR1904 33 R1908 100 R1906 10K CI_MCLKI ...

Page 29: ... MDS62110205 GAS3 2 7 5T_GAS MDS61887708 GAS2 4 12 5T_GAS MDS62110204 GAS1 1 5 5T_GAS MDS62110204 GAS2 1 5 5T_GAS MDS61887710 GAS2 3 9 5T_GAS MDS61887710 GAS5 3 9 5T_GAS MDS61887708 GAS5 4 12 5T_GAS MDS62110206 GAS5 6 5T_GAS MDS62110205 GAS5 2 7 5T_GAS MDS62110204 GAS5 1 5 5T_GAS MDS62110209 GAS1 5 8 5T_GAS MDS62110209 GAS2 5 8 5T_GAS MDS62110209 GAS3 5 8 5T_GAS MDS62110209 GAS4 5 8 5T_GAS MDS6211...

Page 30: ... UDA55AL GP3_ATSC_1INPUT_H_SANYO 14 3 3V 13 1 2V 5 AS 12 GND 11 VIDEO 2 NC_2 10 NC_3 4 NC RF_AGC 1 NC_1 17 DIF_1 9 SIF 8 NC IF_TP 3 B 5V 16 IF_AGC_CNTL 7 SDA 6 SCL 15 RESET 18 DIF_2 19 SHIELD TU3701 2 TDFR B036F FULL_NIM_BR 1 RF_S W_CNTL 2 BST_CNTL 3 B1 5V 4 NC_1 RF_AGC 5 NC_2 6 SCLT 7 SDAT 8 NC_3 9 SIF 10 NC_4 11 VIDEO 12 GND 13 B2 1 2V 14 B3 3 3V 15 RESET 16 NC_5 17 SCL 18 SDA 19 ERR 20 SYNC 21 ...

Page 31: ... PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC V_SYNC L DIM_SCLK LED_DRIVER_D L_SCL L DIM_MOSI LED_DRIVER_D L_SDA 3D_SYNC_RF 3D_GPIO_2 DD_MREMOTE 3D_GPIO_1 M_REMOTE_RX M_RFModule_RESET DC_MREMOTE M_REMOTE_TX NON_L DIM_LED DRIVER NON_L DIM 20101023 26 GP2R NON_3D_SG Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Inter...

Page 32: ... 1 10W 5 AUO_CMI R10021 0 1 10W 5 AUO_CMI R10022 0 1 10W 5 LGD R10023 0 1 10W 5 LGD C10022 10uF 100V OPT C10007 0 33uF 50V R10011 1 27K 1 10W 1 LGD R10013 1 27K 1 10W 1 LGD R10011 47K 1 10W 1 AUO R10013 51K 1 10W 5 AUO P7701 12507WR 06L AUO_CMI 1 2 3 4 5 6 7 R10010 10K 1 8W JP10004 JP10005 R10024 3 9K PWM_PULL_DOWN R10011 2 59K 1 16W 1 CMI R10013 2 59K 1 16W 1 CMI R10019 2 13K 1 10W CMI_21 5 R1001...

Page 33: ...5 26 27 28 29 30 31 RXC2 RXA2 RXA4 RXB0 RXACK RXC0 RXB3 C10031 10uF 16V OPT FRC_PWM1 RXB1 PANEL_VCC RXACK RXA1 RXA0 C10032 1000pF 50V OPT PANEL_VCC RXA0 RXA2 RXB4 RXA1 RXCCK RXD1 RXDCK RXC4 RXC0 RXCCK A_DIM RXA1 RXBCK RXC4 RXB4 RXD3 D9904 5 6V SIDE_CVBS ADMC5M03200L_AMODIODE JK9901 KJA PH 1 0177 SIDE_CVBS 3 M3_DETECT 4 M4 5 M5_GND 1 M1 6 M6 D9901 30V SIDE_CVBS ADUC30S03010L_AMODIODE C9906 100pF 50...

Page 34: ...BLM18PG121SN1D C10052 0 1uF C10051 0 1uF C10054 1000pF 50V C10058 1000pF 50V KEY2 P7705 12507WR 15L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 C10062 0 1uF 16V OPT D10051 5 6V AMOTECH R10052 100 R10059 47K OPT S T_SDA LED_B LG_LOGO 3 5V_ST R10056 0 3 3V_Normal 3 5V_ST Q10051 2SC3052 OPT E B C R10057 47K OPT C10053 0 1uF 16V R10058 10K OPT L10053 BLM18PG121SN1D 3 5V_ST R10064 1 5K R10055 10K 1 C10061 1...

Page 35: ... 0 1uF 16V RL_ON C461 10uF 10V C7555 0 1uF C468 0 1uF 16V C470 0 1uF 16V 24V 15V L7951 R7521 10K C430 10uF 10V C7524 220pF 50V Adapter C7545 0 1uF 50V Adapter R7545 10K C7514 0 1uF 50V 3 5V_ST 1 5V_DDR C7924 0 1uF 50V Adapter R7523 22K PANEL_CTL C7952 10uF 25V R7516 10K 24V_LED_driver Q7502 2SC3052 E B C L415 3 6uH NR8040T3R6N C7955 22uF 16V R7519 22 1 16W 5 Adapter 24V 15V R464 10K C7932 3 3uF 50...

Page 36: ...F12 FRC_DDR3_DQL6 DDR2_DQ3 AF5 FRC_DDR3_DQL7 DDR2_DQ5 AE12 FRC_DDR3_DQU0 DDR2_DQ8 AE10 FRC_DDR3_DQU1 DDR2_DQ14 AF7 FRC_DDR3_DQU2 DDR2_DQ13 AD11 FRC_DDR3_DQU3 DDR2_DQ12 AD7 FRC_DDR3_DQU4 DDR2_DQ15 AD10 FRC_DDR3_DQU5 DDR2_DQ9 AE7 FRC_DDR3_DQU6 DDR2_DQ10 AF10 FRC_DDR3_DQU7 DDR2_DQM1 AD8 FRC_DDR3_NC DDR2_DQM0 AE8 FRC_VSYNC_LIKE Y11 FRC_TESTPIN Y19 ACKP RLV3P RED 3 W26 ACKM RLV3N RED 2 W25 A0P RLV0P RE...

Page 37: ......

Page 38: ... TV Repair Guide 11 years New Basic Models Contents 1 Product Roadmap 2 Main PCB layout 3 Block Diagram 4 Interconnection 5 Standard Repair Process LCD TV EU Group LCD TV Research Department JAN 28th 2011 ...

Page 39: ...r training and service purposes LGE Internal Use Only LCD TV Repair Guide 11 years New Models Applicable Basic Model xxLK330 xxLK430 xxLK450 xxLK530 xxLK550 xxLV2300 xxLV2500 xxLV2540 xxLV3400 xxLV3500 xxLV3550 xxLV5500 xxLV4500 xxLW4500 3D Overview for 11 Year Model ...

Page 40: ...3 22 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Product Roadmap 3D 3D Edge LED Lamp 2011 2011 ...

Page 41: ...in processor DDR Memory Flash Memory 2 3 Micom for Key IR sensing Audio AMP 5W 5W 19 22 26LV2500_S7 Reused 11 Main IC LGE101_Mstar Tuner Type TDTJ S001D DVB T C Display Type Resolution LED TV 1366 x 768 Interface HDMI 2EA Component 1EA AV 1EA USB 1EA Difference Without FRC HDMI Position Resolution Interface Wafer Position Sub 19 22 26LV2500 50HZ Adapter ...

Page 42: ... Memory Flash Memory 2 3 Micom for Key IR sensing Audio AMP 5W 5W 2 3 To LCD Module 22 26LK330_S7 Reused 11 Main IC LGE101_Mstar Tuner Type TDTJ S001D DVB T C Display Type Resolution LCD TV 1366 x 768 Interface HDMI 2EA Component 1EA AV 1EA USB 1EA Difference Without FRC HDMI Position Resolution Interface Wafer Position Sub 22 26LK330 50HZ Adapter 1 ...

Page 43: ...sh Memory 2 3 Micom for Key IR sensing Audio AMP 10W 10W 1 2 3 To LCD Module 32 37 42 47LK450_S7 Reused 11 Main IC LGE101_Mstar Tuner Type TDTJ S001D DVB T C Display Type Resolution LCD TV 1920 x 1080 Interface HDMI 3EA Component 1EA AV 1EA USB 1EA Difference Without FRC HDMI Position Resolution Interface Wafer Position Sub 32 37 42 47LK450 50HZ LVDS IR Power ...

Page 44: ...7LW4500_S7 Reused 11 Main IC LGE107_Mstar Tuner Type TDTJ S001D DVB T C Display Type Resolution 3D LED TV 1920 x 1080 Interface HDMI 3EA Component 1EA AV 1EA USB 1EA Difference HDMI Position Interface Wafer Position LVDS Power Sub 32 37 42 47 55LW4500 100HZ LVDS IR Power Led Driver 2 3 1 Main processor DDR Memory Flash Memory 2 3 Micom for Key IR sensing Audio AMP 10W 10W 4 ...

Page 45: ... 41P SPI Flash 2Mb FRC DDR3 X 16 X 1 1Gb X 1 Tuner_SIF SCL SDA CI_TS_DATA 7 0 CLK Valid Sync CI_DATA 7 0 CI_ADDR 14 0 FE_TS_DATA 0 CLK Valid Sync USB_DM DP HP_OUT DSUB_RGB HVsync DDC_SDA UART_TX PC_ Audio IN SPDIF_OUT Debug _TX RX SC_CVBS RGB LR_IN SC_VIDEO LR_OUT AV_CVBS LR_IN COMP_ YPbPr LR_IN HDMI_TMDS HPD CEC HDMI_TMDS HPD CEC HDMI_TMDS HPD CEC I2S_I F SCL SDA 30P Side Rear DATA Video Audio Su...

Page 46: ...Only for training and service purposes LGE Internal Use Only Interconnection 1 2 1 1 2 3 4 1 Main PCB 2 Soft Touch Key IR PCB LED driver 1 2 3 4 Soft Touch key IR cable Main Module LVDS cable LED driver Module cable SPK cable PCBs Cables 19 22LV2500 LCD Module ...

Page 47: ... Only for training and service purposes LGE Internal Use Only Interconnection 2 2 1 1 2 3 4 LED driver 19 22LV5500 LCD Module 1 Main PCB 2 Soft Touch Key IR PCB 1 2 3 4 Soft Touch key IR cable Main Module LVDS cable LED driver Module cable SPK cable PCBs Cables ...

Page 48: ...d Only for training and service purposes LGE Internal Use Only Interconnection 3 PCBs Cables 26LV2500 LCD Module 2 1 1 2 3 4 LED driver 1 Main PCB 2 Soft Touch Key IR PCB 1 2 3 4 Soft Touch key IR cable Main Module LVDS cable LED driver Module cable SPK cable ...

Page 49: ...d Only for training and service purposes LGE Internal Use Only Interconnection 4 PCBs Cables 26LV5500 LCD Module 2 1 1 2 3 4 LED driver 1 Main PCB 2 Soft Touch Key IR PCB 1 2 3 4 Soft Touch key IR cable Main Module LVDS cable LED driver Module cable SPK cable ...

Page 50: ...LGE Internal Use Only Interconnection 5 2 1 3 4 1 2 3 4 5 1 Main PCB 2 PSU 3 4 1 2 3 4 5 Main PSU cable Main Module LVDS cable LED driver Module cable SPK cable PCBs Cables 32LV2500 LCD Module Soft Touch Key IR PCB Timing controller Soft Touch key IR cable 5 LED Driver 5 6 6 LED driver PSU cable 14P ...

Page 51: ...LGE Internal Use Only Interconnection 6 37LV3400 1 Main PCB 2 PSU 3 4 1 2 3 4 5 Main PSU cable Main Module LVDS cable LED driver Module cable SPK cable PCBs Cables Soft Touch Key IR PCB Timing controller Soft Touch key IR cable 5 LED Driver 6 LED driver PSU cable 14P 2 1 3 4 1 2 3 4 5 LCD Module 5 6 ...

Page 52: ...LGE Internal Use Only Interconnection 7 37LV3550 1 Main PCB 2 PSU 3 4 1 2 3 4 5 Main PSU cable Main Module LVDS cable LED driver Module cable SPK cable PCBs Cables Soft Touch Key IR PCB Timing controller Soft Touch key IR cable 5 LED Driver 6 LED driver PSU cable 14P 2 1 3 4 1 2 3 4 5 LCD Module 5 6 ...

Page 53: ...service purposes LGE Internal Use Only Interconnection 8 2 1 3 4 1 2 3 4 5 1 Main PCB 2 PSU LED driver 3 4 1 2 3 4 5 Main PSU cable Main Module LVDS cable LED driver Module cable SPK cable PCBs Cables 42LV4500 LCD Module Soft Touch Key IR PCB Timing controller Soft Touch key IR cable ...

Page 54: ...nal Use Only Interconnection 9 2 1 3 4 1 2 3 4 5 1 Main PCB 2 PSU LED driver 3 4 1 2 3 4 5 Main PSU cable Main Module LVDS cable LED driver Module cable SPK cable PCBs Cables 42LW4500 LCD Module Soft Touch Key IR PCB Timing controller Soft Touch key IR cable Local dimming signal cable Main LED driver 8pin 6 6 ...

Page 55: ...es LGE Internal Use Only Interconnection 10 2 1 4 3 1 2 3 4 1 Main PCB 2 PSU without inverter 3 IR Indicator PCB 4 1 2 3 4 Main PSU cable Main Module LVDS cable SPK cable IR Local key cable PCBs Cables 32LK530 LCD Module Local Key PCB 5 5 Inverter Inverter PSU cable 14pin 5 5 Timing controller 6 6 ...

Page 56: ...ng and service purposes LGE Internal Use Only Interconnection 11 37LK430 2 1 4 3 1 2 3 4 1 Main PCB 2 PSU without inverter 3 IR Indicator PCB 4 1 2 3 4 Main PSU cable Main Module LVDS cable SPK cable IR Local key cable PCBs Cables LCD Module Local Key PCB 5 5 Timing controller ...

Page 57: ...rposes LGE Internal Use Only Interconnection 12 2 1 4 3 1 2 3 4 1 Main PCB 2 PSU without inverter 3 4 1 2 3 4 Main PSU cable Main Module LVDS cable SPK cable PCBs Cables 42LK450 LCD Module 5 5 Inverter Inverter PSU cable 14pin 5 5 Timing controller Soft Touch Key IR PCB Soft Touch key IR cable ...

Page 58: ... Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Interconnection sub PCB LV LK450 Series SPK unit Soft Touch Key IR PCB To Main 15pin Cable ...

Page 59: ...yright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Interconnection sub PCB LK430 LK530 Series IR Sensor Tact key To Main SPK unit SPK unit 12pin Cable ...

Page 60: ...5 Vertical Horizontal bar residual image light spot external device color error 5 6 B Power error No power 6 7 Off when on off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error No response in remote controller key error recording error memory error 10 11 External device recognition error 11 12 E Noise Circuit noise...

Page 61: ...wer Board 20V 12V or 24v output Normal voltage Y Replace Inverter or module N Repair Power Board or parts End 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 Standard Repair Process Revised date 1 13 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A7 A3 First of all...

Page 62: ...rnal Use Only Normal voltage Check various voltages of Power Board 3 5V 12V 20V or 24V No Video No audio Check and replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 13 LCD TV Error symptom 2 2010 2 19 ...

Page 63: ...y connecting RF Cable at other equipment DVD Player Set Top Box Different maker TV etc SVC Bulletin Check Tuner soldering Normal Picture Y N Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Red key Signal test Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y ...

Page 64: ...rnal Input COMPONENT RGB HDMI DVI Y External device Cable normal External Input Component error Check external device and cable Y External 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 A8 N Y End Replace module Request repair for external device cable Color error Check Test pattern A12 A10 A11 Standard Repair ...

Page 65: ...ect 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 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 Ext...

Page 66: ...ion Check Power On High Check Power cord was inserted properly Check Power LED Replace Power B D Measure voltage of each output of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 5V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A19 A4 Standard Repair Process Established date Revised date 6 13 LCD TV Error symptom 6 Stand By Red Operat...

Page 67: ...D TV Error symptom Standard Repair Process 7 Status Power off List Explanation Normal POWEROFF_REMOTEKEY Power 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 b...

Page 68: ...enu Speaker off Off N Y Cancel OFF Check audio B 20V or 24V of Power Board Normal voltage Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 LCD TV Error symptom Standard Repair Process 8 2010 2 19 ...

Page 69: ...d audio Discontinuation Noise only for Analog Wrecked audio Discontinuation Noise only for External Input Connect and check 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 ...

Page 70: ...he customer cause is interference from light in room Check R C Operating When turn off light in room Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check voltage On Main B D A27 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 A4 Check IR Output signal Normal Signal N Y Repair Replace IR ...

Page 71: ...ormation Check input signal Signal input Y N External Input and Component Recognition error Check and fix external device 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 Revised date 11 13 LCD TV Error symptom Standard Repair Process 11 2010 2 19 ...

Page 72: ... the description OR If there is a Tak Tak noise from the cabinet refer to the KMS fix information and then proceed as shown in the solution manual For 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 rela...

Page 73: ...l Use Only Replace module Zoom part with exterior damage Module damage Cabinet damage Replace cabinet Replace remote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 13 13 LCD TV Error symptom Standard Repair Process 13 2010 2 19 ...

Page 74: ...7 LCD TV Version checking method A7 9 A Video error_Color error LCD TV connection diagram A8 10 Tuner Checking Part A9 11 Check Link Cable LVDS reconnection condition A10 A11 A10 Edge LED A11 Lamp 12 Adjustment Test pattern ADJ Key A12 13 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 14 Check Link Cable LVDS reconnection condition A10 A11 A10 Edge LED...

Page 75: ...ethod A4 25 26 B Power error_Off when on off while viewing POWER OFF MODE checking method A22 27 B Power error_Off when on off while viewing POWER BOARD PIN voltage checking method A19 28 C Audio error_No audio Normal video Checking method in menu when there is no audio A24 29 Voltage and speaker checking method when there is no audio A25 30 C Audio error_Wrecked audio discontinuation Voltage and ...

Page 76: ...lished date Standard Repair Process Detail Technical Manual Revised date A1 Error symptom Content Check LCD back light with naked eye A Video error_No video Normal audio After turning on the power and disassembling the case check with the naked eye whether you can see light from 4 locations ALL MODELS LCD TV A1 2011 2 07 ...

Page 77: ... lamp inverter B 24V measuring method A Video error_No video Normal audio A2 Established date Revised date Error symptom Content LCD TV A2 Check the DC 24V 12V 3 5V and Inverter on Edge LED PSU without LED Driver Lamp Power Board Inverter PSU 14 Pin 1 5 24V 6 10 GND 11 Detect 12 Inverter On Off 13 Int PWM 14 Ext PWM PDIM 26 47 11 Pin map Lamp PSU without inverter 2011 2 07 ...

Page 78: ...edium Warm re enter the value after replacing the MAIN BOARD Standard Repair Process Detail Technical Manual Check White Balance value A Video error_No video Normal audio ALL MODELS A3 Established date Revised date Error symptom Content LCD TV A3 Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 7 3 After recording the R G B GAIN Cut val...

Page 79: ...io A4 Established date Revised date Error symptom Content LCD TV A4 Check the DC 20Vor24V 12V 3 5V Edge LED PSU without LED Driver Lamp PSU without inverter 24 Pin Power Board Main Board FW20020 24SB FOOSUNG 1 Power on 2 20V 24V 3 20V 24V 4 20V 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 GND 17 12V 18 Inverter On off 19 12V 20 Lamp A Dim 21 12V 22 PWM Dim 1 2...

Page 80: ... customer support Æ signal test Æ select channel When the signal is strong use the attenuator 10dB 15dB 20dB etc Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A6 Established date Revised date Error symptom Content LCD TV A6 2011 2 07 ...

Page 81: ...rd Repair Process Detail Technical Manual LCD TV Version checking method A Video error_Video error video lag stop 1 Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Error symptom Content LCD TV A7 2011 2 07 ...

Page 82: ... Use Only Standard Repair Process Detail Technical Manual LCD TV connection diagram 1 A Video error _Vertical Horizontal bar residual image light spot As the part connecting to the external input check the screen condition by signal A8 Established date Revised date Error symptom Content LCD TV A8 2011 2 07 ...

Page 83: ...ngth or check whether the screen is normal when the external device is connected 2 After measuring each voltage from power supply finally replace the MAIN BOARD Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop ALL MODELS A9 Established date Revised date Error symptom Content LCD TV A9 2011 2 07 ...

Page 84: ...se Only Standard Repair Process Detail Technical Manual Check Link Cable LVDS reconnection condition A Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion LV Edge LED Series Models A10 Established date Revised date Error symptom Content LCD TV A10 2011 2 07 ...

Page 85: ...oses LGE Internal Use Only Standard Repair Process Detail Technical Manual Check Link Cable LVDS reconnection condition A Video error_Color error Check the contact condition of the Link Cable LK Lamp series Models A11 Established date Revised date Error symptom Content LCD TV A11 2011 2 07 ...

Page 86: ...Detail Technical Manual Adjustment Test pattern ADJ Key A Video error_Color error You can view 6 types of patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 4 Video error Classification of MODULE or Main B D A12 Established date Revised date Error symptom Content LCD TV A12 2011 2 07 ...

Page 87: ...efect CNT Broken T Con Defect CNT Broken T Con Defect CNT Broken T Con Defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange T Con Board 1 A 1 5 ...

Page 88: ... training and service purposes LGE Internal Use Only Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 A 2 5 ...

Page 89: ...ight 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Appendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 ...

Page 90: ...for training and service purposes LGE Internal Use Only Appendix Exchange the Module 1 Panel Mura Light leakage Press damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage A 4 5 Un repairable Cases In this case please exchange the module ...

Page 91: ...tal Block Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Vertical Line Source TAB IC Defect Vertical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 A 5 5 Un repairable Cases In this case please exchange the module ...

Page 92: ...ernal Use Only Standard Repair Process Detail Technical Manual Check front display LED B Power error _No power A17 Established date Revised date Error symptom Content LCD TV A17 ST BY condition Red Power ON condition white Front LED control Menu Æ Option Æ Power Indicator Æ Standby light ON 2010 2 19 ...

Page 93: ...mptom Content LCD TV A18 Check the 3 5V when st by For 11 models there is no voltage out for st by purpose When st by only 3 5V is normally on 2011 2 07 Edge LED PSU without LED Driver Lamp PSU without inverter 24 Pin Power Board Main Board FW20020 24SB FOOSUNG 1 Power on 2 20V 24V 3 20V 24V 4 20V 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 GND 17 12V 18 Inve...

Page 94: ...19 Established date Revised date Error symptom Content LCD TV A19 Check power on pin is high 2011 2 07 Edge LED PSU without LED Driver Lamp PSU without inverter 24 Pin Power Board Main Board FW20020 24SB FOOSUNG 1 Power on 2 20V 24V 3 20V 24V 4 20V 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 GND 17 12V 18 Inverter On off 19 12V 20 Lamp A Dim 21 12V 22 PWM Dim...

Page 95: ...hod 1 Press the IN START button of the remote controller for adjustment 2 Check the entry into adjustment item 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A22 Established date Revised date Error symptom Content LCD TV A22 2011 2 07 ...

Page 96: ...ss the MENU button on the remote controller 2 Select the AUDIO function of the Menu 3 Select TV Speaker from Off to On Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A24 Established date Revised date Error symptom Content LCD TV A24 2011 2 07 ...

Page 97: ...rd If there is no input voltage remove and check the connector Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal the speaker is normal Standard Repair Process Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video ALL MODELS A25 Established date Revised date E...

Page 98: ...mal when the Analog Tester needle moves slowly and defective when it does not move at all Standard Repair Process Detail Technical Manual Remote controller operation checking method D Function error_ No response in remote controller key error ALL MODELS A27 Established date Revised date Error symptom Content LCD TV A27 1 2 P2401 P2402 1 EYEQ_SCL 2 EYEQ_SDA 3 GND 4 KEY1 5 KEY2 6 St 3 3V 7 GND 8 LED...

Reviews:

No comments

Related manuals for 19LV2500

Zenith C27C35T Series Operating Manual & Warranty preview
C27C35T Series
Brand: Zenith Pages: 52
Zenith C27A25 Operating Manual & Warranty preview
C27A25
Brand: Zenith Pages: 52
Zenith A09A02X Operating Manual & Warranty preview
A09A02X
Brand: Zenith Pages: 26
Zenith A19A02D Operating Manual preview
A19A02D
Brand: Zenith Pages: 24
Daewoo DTH-14Q1FS Service Manual preview
DTH-14Q1FS
Brand: Daewoo Pages: 78
Hyundai H-LED29V17 Instruction Manual preview
H-LED29V17
Brand: Hyundai Pages: 29
Linsar 75UHD8050FP User Manual preview
75UHD8050FP
Brand: Linsar Pages: 38
Bang & Olufsen BeoVision 11-40 User Manual preview
BeoVision 11-40
Brand: Bang & Olufsen Pages: 80
ViewSonic VS12335-2M Service Manual preview
VS12335-2M
Brand: ViewSonic Pages: 102
TV Star LED24FV1 User Manual preview
LED24FV1
Brand: TV Star Pages: 21
Skyvue OBX-4270-P Owner'S Manual preview
OBX-4270-P
Brand: Skyvue Pages: 52
Citizen JCTV3245XA User Manual preview
JCTV3245XA
Brand: Citizen Pages: 28
Bush 55/148F User Manual preview
55/148F
Brand: Bush Pages: 37
Aiwa AW-LED32X6FL Operation Manual preview
AW-LED32X6FL
Brand: Aiwa Pages: 68
Zenith H25E37Y Installation And Operating Manual, Warranty preview
H25E37Y
Brand: Zenith Pages: 40
Magnavox 15MF400T - LCD TV FLAT PANEL MONITOR Specifications preview
15MF400T - LCD TV FLAT PANEL MONITOR
Brand: Magnavox Pages: 2
Zenith SENTRY 2 SL2067BT Operating Manual & Warranty preview
SENTRY 2 SL2067BT
Brand: Zenith Pages: 35
Hisense LCD2633EU Service Manual preview
LCD2633EU
Brand: Hisense Pages: 42

Brands by name

Popular brands

Load more brands