LG 42PT250 Service Manual Download Page 21

Page: 21 / 72

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.

C_DDR_A[11]

C_DDR_A[7]

C_DDR_A[6]

C_DDR_A[5]

C_DDR_A[3]

C_DDR_DQ[3]

C_DDR_DQ[4]

C_DDR_DQ[5]

C_DDR_DQ[6]

C_DDR_DQ[7]

C_DDR_DQ[8]

C_DDR_DQ[11]

C_DDR_DQ[14]

C_DDR_A[0]

C_DDR_A[1]

C_DDR_A[2]

C_DDR_A[4]

C_DDR_A[9]

C_DDR_A[10]

C_DDR_A[12]

C_DDR_A[8]

C_DDR_DQ[0]

C_DDR_DQ[1]

C_DDR_DQ[2]

C_DDR_DQ[9]

C_DDR_DQ[10]

C_DDR_DQ[12]

C_DDR_DQ[13]

C_DDR_DQ[15]

+1.0V_LTX

+3.3V_VDD

+3.3V_LRX

+3.3V_LTX

+3.3V_PLL

UART_RXD_3D

TCLK2N

C766

0.1uF

TE3N

/C_DDR_CS

C_DDR_DQ[15-0]

TMODE[2]

LVDS_DATA_1_E-

R776

3.3K

SPI_CK

LVDS_D

R764

3.3K

LVDS_D

+3.3V_3D

TC4N

C_DDR_DQS0P

C782

0.1uF

16V

C757

0.1uF

16V

JTAG_TDO

TB1P

R722

TE1P

UART_TXD_3D

TE2N

TD3P

/C_DDR_CAS

LVDS_D

TMODE[0]

TB4P

LVDS_DATA_2_E-

LVDS_D

C777

0.1uF

16V

R725

C756

0.1uF

16V

C_DDR_DQS1M

R758

10K

C765

0.1uF

16V

TA1P

TCLK1N

P_SCL

R761

3.3K

READY

TB2P

TD3N

TC3P

C_DDR_BA[0]

LG8300_RESET

C759

0.1uF

TE4N

TB4N

/C_DDR_RAS

LVDS_D

TMODE[1]

LVDS_D

LVDS_DATA_2_D-

L704

BLM18PG121SN1D

C804

0.1uF

16V

R768

3.3K

L707

BLM18PG121SN1D

L706

BLM18PG121SN1D

TCLK1P

C796

0.1uF

16V

TB1N

C_DDR_DQS1P

C778

0.1uF

16V

C764

0.1uF

16V

P_SDA

TA2P

TCLK3P

TCLK4P

TA4P

C_DDR_BA[1]

TMODE[0]

/C_DDR_WE

LVDS_CLK_1-

LVDS_D

C811

0.1uF

16V

TMODE[3]

LVDS_DATA_2_A-

TD1N

C735
0.1uF
16V

C_DDR_DQS0M

C758

0.1uF

16V

TC2N

LG8300_RESET

TA3P

TCLK4N

R744

TA4N

C808

0.1uF

16V

C_DDR2_CKE

R763

3.3K

TMODE[1]

L705

BLM18PG121SN1D

JTAG_TMS

LVDS_DATA_1_D-

SPI_DO

+3.3V_3D

LVDS_DATA_1_A-

TC1N

LVDS_CLK_2-

BOOT_SEL

C816

0.1uF

16V

R770

C812

0.1uF

16V

TD2P

TB3P

TC4P

C_DDR_DQM0

TA3N

TE4P

/C_DDR2_CLK

/JTAG_TRST

JTAG_TDI

TMODE[2]

TC1P

LVDS_DATA_1_C-

LVDS_DATA_1_B-

R726

SPI_DO

SPI_CSZ

LVDS_DATA_2_B-

C800

0.1uF

16V

TC2P

C795

0.1uF

16V

TE3P

C_DDR_DQM1

C772

0.1uF

16V

TB3N

C803

0.1uF

16V

C771

0.1uF

16V

C770

0.1uF

16V

C785

0.1uF

16V

JTAG_TCLK

TE1N

C773

0.1uF

C_DDR2_CLK

TE2P

TMODE[3]

R765

3.3K

LVDS_D

LVD

SPI_DI

LVDS_DATA_2_C-

SPI_CK

TB2N

TC3N

C815

0.1uF

16V

R723

TD4N

R721

R759

/JTAG_TRST

C798

0.1uF

16V

+3.3V_3D

TD4P

SW700

JTP-1127WEM

+1.0V

TA1N

JTAG_TDI

TD2N

R708

C_DDR2_ODT

BOOT_SEL

TCLK2P

TCLK3N

LVDS_D

SPI_CSZ

LVD

LVDS_D

SPI_DI

C790

0.1uF

16V

+3.3V_3D

C813

0.1uF

16V

JTAG_TCLK

C763

0.1uF

16V

TD1P

JTAG_TDO

C781

0.1uF

16V

TA2N

+3.3V_3D

3D_L/R_SYNC

R1438

100

R1439

100

R896

100

R894

100

R891

100

R883

100

R878

100

R874

100

R845

100

R840

100

R897

100

R895

100

FLASH_WP

X700

25MHz

C821

0.1uF

16V

C828

0.1uF

16V

L712

BLM18PG121SN1D

C829

0.1uF

16V

C831

0.1uF

16V

C834

0.1uF

C817

0.1uF

16V

C837

0.1uF

16V

C835

0.1uF

16V

R1450
0

R1452
0

Q703
KRC103S
READY

FLASH_WP

C818

10uF

6.3V

C791

10uF

6.3V

C820

10uF

6.3V

C794

10uF

6.3V

C839

10uF

C833

10uF

6.3V

C832

10uF

6.3V

C836

10uF

6.3V

+3.3V

3D_RF_TXD

3D_RF_RXD

3D_RFMODULE_RESET

+3.3V

R1454

2.7K

READY

R1456
100

R1455 22

C_DDR_A[12-0]

TP1

TP2

TP3

TP4

TP5

TP6

TP7

R1445

R905

R1446

R902

R903

R904

R1443

R1448

R1444

R1449

R910

R909

R907

R908

R911

R753
3.3K

READY

R754
3.3K

R752

3.3K

R749
3.3K

READY

R750
3.3K

R748
3.3K

R751
3.3K

READY

R747
3.3K

READY

R745
3.3K

READY

R746

3.3K

C737
0.1uF
16V

3D_L/R_SYNC

R1470 100

R1453

100

R1469

100

3D_RF_GPIO2

3D_RF_GPIO1

3D_RF_GPIO0

R739

4.7K

IC702

W25X20BVSNIG

GND

DIO

CLK

HOLD

VCC

R772
10K

R757
0

P704

12507WS-12L

C722

27pF

50V

C721

27pF

50V

C767

0.1uF

16V

C810

0.1uF

16V

C783

0.1uF

16V

C802

0.1uF

16V

C787

0.1uF

16V

C760

0.1uF

16V

C779

0.1uF

16V

C838

10uF

6.3V

C793

0.1uF

16V

C774

0.1uF

16V

C814

0.1uF

16V

C792

10uF

6.3V

+3.3V_3D

+1.0V

+1.8V

DDR_VREF_LG8300

R1477
1K

R1478

R1479
1K

R1480
1K

C842

1000pF

+1.8V

DDR_VREF_LG8300

C840

0.1uF

C841

1000pF

+1.8V

DDR_VREF_DDR

R998

4.7K
1%

R999

4.7K
1%

R996

4.7K
1%

R997

4.7K
1%

C843

0.1uF

IC700

LG8300

TE4P

TE4N

TD4P

TD4N

TCLK4P

TCLK4N

TC4P

TC4N

TB4P

TB4N

TA4P

TA4N

TE3P

TE3N

TD3P

TD3N

TCLK3P

TCLK3N

TC3P

TC3N

TB3P

TB3N

TA3P

TA3N

TE2P

TE2N

TD2P

TD2N

TCLK2P

TCLK2N

TC2P

TC2N

TB2P

TB2N

TA2P

TA2N

TE1P

TE1N

TD1P

TD1N

TCLK1P

TCLK1N

TC1P

TC1N

TB1P

TB1N

TA1P

TA1N

DDR_ADDR[0]

DDR_ADDR[1]

DDR_ADDR[2]

DDR_ADDR[3]

DDR_ADDR[4]

DDR_ADDR[5]

DDR_ADDR[6]

DDR_ADDR[7]

DDR_ADDR[8]

DDR_ADDR[9]

DDR_ADDR[10]

DDR_ADDR[11]

DDR_ADDR[12]

DDR_BA[0]

DDR_BA[1]

DDR_CK

DDR_CK_N

DDR_CKE

DDR_CS_N

DDR_ODT

DDR_RAS_N

DDR_CAS_N

DDR_WE_N

R10

DDR_DQS[0]

V14

DDR_DQS[1]

V12

DDR_DQS_N[0]

U14

DDR_DQS_N[1]

U12

DDR_DM[0]

R15

DDR_DM[1]

T12

DDR_DQ[0]

V15

DDR_DQ[1]

T15

DDR_DQ[2]

U16

DDR_DQ[3]

T16

DDR_DQ[4]

R16

DDR_DQ[5]

V16

DDR_DQ[6]

T14

DDR_DQ[7]

U15

DDR_DQ[8]

T13

DDR_DQ[9]

V11

DDR_DQ[10]

U13

DDR_DQ[11]

U11

DDR_DQ[12]

T11

DDR_DQ[13]

V13

DDR_DQ[14]

R12

DDR_DQ[15]

R13

DDR_TAOUT

U10

DDR_TDOUT[0]

T10

DDR_TDOUT[1]

V10

RA1N

U18

RA1P

U17

RB1N

T18

RB1P

T17

RC1N

R18

RC1P

R17

RCLK1N

P18

RCLK1P

P17

RD1N

N18

RD1P

N17

RE1N

M18

RE1P

M17

RA2N

L18

RA2P

L17

RB2N

K18

RB2P

K17

RC2N

J18

RC2P

J17

RCLK2N

H18

RCLK2P

H17

RD2N

G18

RD2P

G17

RE2N

F18

RE2P

F17

CLK_XIN

A17

CLK_XOUT

B18

PO_RST_N

B17

LR_SYNC

EMITTER_PULSE

UART_TXD

A16

UART_RXD

B16

SPI_CS

C16

SPI_SCLK

D16

SPI_DO

A15

SPI_DI

B15

SCL

C15

SDA

D15

SCL_M

A14

SDA_M

B14

GPIO[0]

C14

GPIO[1]

D14

GPIO[2]

A13

GPIO[3]

B13

GPIO[4]

C13

GPIO[5]

D13

GPIO[6]

A12

GPIO[7]

B12

GPIO[8]

C12

GPIO[9]

D12

GPIO[10]

A11

GPIO[11]

B11

GPIO[12]

C11

GPIO[13]

D11

GPIO[14]

A10

GPIO[15]

B10

GPIO[16]

C10

GPIO[17]

D10

GPIO[18]

GPIO[19]

GPIO[20]

GPIO[21]

GPIO[22]

GPIO[23]

GPIO[24]

GPIO[25]

GPIO[26]

GPIO[27]

GPIO[28]

GPIO[29]

GPIO[30]

GPIO[31]

TDI

TMS

TRST

TDO

TCK

TEST_SE

TMODE[0]

TMODE[1]

TMODE[2]

TMODE[3]

BOOT_SEL

LG8300

IC700

VDD10_1

VDD10_2

F13

VDD10_3

VDD10_4

VDD10_5

VDD10_6

VDD10_7

G10

VDD10_8

G11

VDD10_9

G12

VDD10_10

G13

VDD10_11

VDD10_12

H13

VDD10_13

VDD10_14

J13

VDD10_15

VDD10_16

K13

VDD10_17

VDD10_18

VDD10_19

VDD10_20

VDD10_21

L10

VDD10_22

L11

VDD10_23

L12

VDD10_24

L13

VDD10_25

VDD10_26

M13

LTX_VDD10_1

LTX_VDD10_2

LTX_VDD10_3

LTX_VDD10_4

LTX_VDD10_5

VDD33_1

VDD33_2

VDD33_3

VDD33_4

VDD33_5

VDD33_6

E10

VDD33_7

E11

VDD33_8

E12

VDD33_9

E13

VDD33_10

E14

VDD33_11

E15

VDD33_12

F15

VDD33_13

G15

LRX_AVDD33_1

L16

LRX_AVDD33_2

N16

LTX_AVDD33_1

LTX_AVDD33_2

LTX_AVDD33_3

LTX_AVDD33_4

LTX_AVDD33_5

DDR_VREF0

DDR_VREF1

R11

DDR_VREF2

V17

DDR_VDDQ_1

DDR_VDDQ_2

DDR_VDDQ_3

DDR_VDDQ_4

N10

DDR_VDDQ_5

N11

DDR_VDDQ_6

N12

DDR_VDDQ_7

N13

DDR_VDDQ_8

N14

DDR_VDDQ_9

DDR_VDDQ_10

DDR_VDDQ_11

DDR_VDDQ_12

DDR_VDDQ_13

P10

DDR_VDDQ_14

P12

DDR_VDDQ_15

P13

DDR_VDDQ_16

P14

DDR_VDDQ_17

P15

GND_1

GND_2

GND_3

GND_4

GND_5

F10

GND_6

F11

GND_7

F12

GND_8

F14

GND_9

GND_10

G14

GND_11

G16

GND_12

GND_13

GND_14

GND_15

H10

GND_16

H11

GND_17

H12

GND_18

H14

GND_19

H15

GND_20

H16

GND_21

GND_22

GND_23

GND_24

J10

GND_25

J11

GND_26

J12

GND_27

J14

GND_28

J15

GND_29

J16

GND_30

GND_31

GND_32

GND_33

K10

GND_34

K11

GND_35

K12

GND_36

K14

GND_37

K15

GND_38

K16

GND_39

L14

GND_40

L15

GND_41

GND_42

GND_43

GND_44

M10

GND_45

M11

GND_46

M12

GND_47

M14

GND_48

M15

GND_49

GND_50

GND_51

N15

GND_52

GND_53

P11

GND_54

GND_55

R14

LRX_AVSS33_1

M16

LRX_AVSS33_2

P16

LTX_AVSS33_1

LTX_AVSS33_2

LTX_AVSS33_3

LTX_AVSS33_4

LTX_AVSS33_5

DDRPLL_AVSS33

C17

SYSPLL_AVSS33

D17

ADPLL_AVSS33

E16

SSPLL_AVSS33

F16

DDRPLL_AVDD33

C18

SYSPLL_AVDD33

D18

SSPLL_AVDD33

E17

ADPLL_AVDD33

E18

GND_0

ZD701

5.6B

ZD702

5.6B

ZD703

5.6B

ZD704

5.6B

ZD705

5.6B

ZD706

5.6B

3D_RFMODULE_DC

3D_RFMODULE_DD

R1481

2.7K

READY

R1482

2.7K

READY

ZD707

5.6B

ZD708

5.6B

R1483
100

R1484
100

3DF

GP2R_S7R

L/R_DETECT

2010-08-31

LG8300_RESET

EJTAG

Serial Flash
2MBit

RF Emiiter Interface

Close to LG8300

Close to DDR2(IC701)

LGE Internal Use Only

Summary of Contents for 42PT250

Page 1: ...S READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS PD13K MODEL 42PT250 42PT250 ZG 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 MFL67289503 1108 REV00 ...

Page 2: ...right 2011 LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 6 BLOCK DIAGRAM 13 EXPLODED VIEW 14 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...t s Neck 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 turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed met...

Page 4: ... 1 2D 42 HD No Item Specification Remark 1 Display Screen Device 106 cm 42 inch wide Color Display Module PDP 2 Aspect Ratio 16 9 3 PDP Module PDP42T3 RGB Closed Well Type Glass Filter 38 Pixel Format 1024 horiz By 768 ver 4 Operating Environment 1 Temp 0 deg 40 deg 2 Humidity 20 80 5 Storage Environment 3 Temp 20 deg 60 deg LGE SPEC 4 Humidity 10 90 6 Input Voltage AC 100 V 240 V 50 60 Hz Maker L...

Page 5: ... Portugal Romania Russia Serbia Slovenia Spain Sweden Slovakia Switzerland Turkey Ukraine UK 2 Broadcasting system 1 PAL SECAM BG EU PAL Market 2 PAL SECAM DK 3 PAL Ⅰ Ⅱ 4 SECAM L L 5 DVB T 6 DVB C 3 Receiving system Analog Upper Heterodyne Digital COFDM 4 Scart Jack 1EA PAL SECAM 5 Video Input 1EA PAL SECAM NTSC Side AV 6 Component Input 1EA Y Cb Cr Y Pb Pr 7 RGB Input RGB PC Analog D Sub 15Pin 8 ...

Page 6: ...HEAT RUN MODE 1 Press the POWER ON KEY on R C for adjustment 2 OSD display and screen display PATTERN MODE Set is activated HEAT run without signal generator in this mode Single color pattern WHITE of HEAT RUN MODE uses to check panel Caution If you turn on a still screen more than 20 minutes Especially digital pattern cross hatch pattern an after image may be occur in the black level part of the ...

Page 7: ...ushing ADJ key Enter Internal ADC mode by pushing G key at 5 ADC Calibration Caution Using power on button of the Adjustment R C power on TV ADC Calibration Protocol RS232 Adjust Sequence aa 00 00 Enter 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 6 Function ...

Page 8: ...Illumination is less than 10ux 2 Measure and adjust after sticking the Color Analyzer CA 100 CA210 to the side of the module 3 Aging time After aging start keep the Power on no suspension of power supply and heat run over 5 minutes O Auto adjustment Map RS 232C RS 232C COMMAND CMD ID DATA Wb 00 00 White Balance Start Wb 00 ff White Balance End Caution Color Temperature COOL Medium Warm One of R Ga...

Page 9: ...s y EDID have to be downloaded to Insert Process in advance 7 5 DDC EDID Write HDMI 256Byte Not used any more Use Auto D L 1 Connect HDMI Signal Cable to HDMI Jack 2 Write EDID DATA to EEPROM 24C02 by using DDC2B protocol 3 Check whether written EDID data is correct or not For SVC main Ass y EDID have to be downloaded to Insert Process in advance 7 6 EDID DATA 1 All Data HEXA Value 2 Changeable Da...

Page 10: ...e EYE Key on the adjustment remote controller 2 Check the Sensor DATA It must be under 10 and keep the data longer than 1 5s 3 Check OK Sensor DATA 0 4095 Power Saving Mode 0 12 IF you press IN STAP Button change Green Eye check OSD 9 Model name Serial number download 9 1 Model name Serial number D L 1 Press Power on key of service remocon Baud rate 115200 bps 2 Connect RS232 Signal Cable to RS 23...

Page 11: ...sible to download by bar code scan so It need Manual download 1 Press the instart key of ADJ remote controller 2 Go to the menu 5 Model Number D L like below photo 3 Input the Factory model name or Serial number like photo 4 Check the model name Instart menu Factory name displayed 5 Check the Diagnostics DTV country only Buyer model displayed 10 Download MAC Address CI Key and widevine Key Check w...

Page 12: ...ocket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t work But your downloaded version is High USB data is automatically detecting 3 Show the message Copying files from memory 4 Updating is staring 5 0 Updating Completed The TV will restart automatically After turn on TV Please press IN STOP button on ADJ Remote control IF you don...

Page 14: ... 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 A10 A9 LV1 A12 A21 A2...

Page 15: ...A 0 CI_ADDR 7 CI_DET CI_ADDR 8 PCM_A 1 CI_CD1 PCM_A 14 CI_CD2 CI_ADDR 5 CI_IOWR CI_DET CI_OE CI_TS_DATA 1 R113 100 EU BUF_FE_TS_CLK AR109 33 EU JK104 10067972 000LF EU EAG41860102 G1 G2 57 21 52 16 10 47 41 5 36 59 23 45 54 18 49 43 13 7 38 2 25 56 20 51 15 9 46 40 4 35 58 22 53 17 11 48 42 12 6 37 1 24 55 19 50 44 14 8 39 3 26 60 27 61 28 62 29 63 30 64 31 32 33 34 65 66 67 68 69 PCM_IOWR CI_TS_V...

Page 16: ...01 4A YL O SPRING 5A YL E LUG 3A YL CONTACT 4B WH O SPRING 3C RD CONTACT 4C RD O SPRING 5C RD E LUG C225 1000pF 50V R262 10K COMP2_R_IN C224 1000pF 50V 3 3V COMP2_L_IN R261 10K R259 470K COMP2_DET COMP2_Pb R265 12K COMP2_Pr R260 470K COMP2_Y R266 12K R264 10K COMP2_Y COMP2_Pb COMP2_Pr R286 0 R282 0 COMP2_Pr COMP2_Y COMP2_Y COMP2_Pb R284 0 R285 0 COMP2_Pr COMP2_Pb R283 0 R287 0 C228 10pF 50V READY ...

Page 17: ..._2_D R828 0 2D LVDS_DATA_2_A TE1P LVDS_DATA_1_C TB1N R800 0 2D TD1P R824 0 2D TA1N TC3P TC2N TD3N TA1N TC1N TC1P R815 0 2D PC_SER_CLK R833 0 2D TE2N TB1P TB2N R804 0 2D TE3P LVDS_DATA_1_E R812 0 2D R786 0 2D TE2P LVDS_DATA_1_C SDA_3 3V_MOD P_SCL R831 0 2D R830 0 2D LVDS_DATA_2_C R810 0 2D R822 0 2D TB1P LVDS_CLK_1 R789 0 2D TD2P UART_RXD TA2P PC_SER_DATA LVDS_DATA_2_D TCLK2N R785 0 2D 3 3V TCLK1P ...

Page 18: ... AE15 NC_33 AD2 NC_47 AD16 NC_46 AD15 NC_63 AE16 NC_66 AF3 NC_76 AF14 NC_32 AD1 NC_44 AD13 NC_61 AE14 NC_60 AE13 NC_51 AE4 NC_36 AD5 NC_67 AF4 NC_35 AD4 NC_49 AE2 NC_71 AF8 NC_40 AD9 NC_56 AE9 NC_72 AF9 NC_58 AE11 NC_69 AF6 NC_53 AE6 NC_74 AF11 NC_37 AD6 NC_43 AD12 NC_52 AE5 NC_75 AF12 NC_68 AF5 NC_59 AE12 NC_57 AE10 NC_70 AF7 NC_42 AD11 NC_38 AD7 NC_41 AD10 NC_54 AE7 NC_73 AF10 NC_39 AD8 NC_55 AE...

Page 19: ...SSQ_3 D1 VSSQ_4 D8 VSSQ_5 E2 VSSQ_6 E8 VSSQ_7 F9 VSSQ_8 G1 VSSQ_9 G9 B MDQSLB B MDQL3 B MDML B MA0 B MA7 B MWEB B TMA13 B MBA1 B TMA11 B MDMU B TMA5 B MCK B MA9 B MDQL6 B MDQSU B MDQSLB B MA1 B MBA0 B MDQU3 B MDQU5 B TMDQL0 B TMDQL1 B MA7 B TMDQU2 B MDQL5 B MDQL5 B MDQU7 B TMA2 B TMDQSLB B TMA3 B MDQL6 B TMDQSL B MDQSUB B MCKE B MCASB B MA12 B MWEB B TMBA0 B MDQU3 B MA11 B MA2 B MCKE B TMCKE B MDQ...

Page 20: ...63 10uF 16V READY C633 22uF 16V C632 22uF 16V R613 10K READY R638 10K READY C662 10uF 10V C607 47uF 6 3V C616 47uF 6 3V C659 47uF 6 3V IC606 AZ1085S 3 3TR E1 1 ADJ GND 2 OUTPUT 3 INPUT L709 BLM18PG121SN1D 3D 3 3V_3D C740 0 01uF 3D C746 10uF 10V 3D 1 8V C755 0 1uF 16V 3D C751 0 1uF 16V 3D C747 10uF 10V 3D L703 BLM18PG121SN1D 3D L710 BLM18PG121SN1D 3D C745 22uF 10V 3D 0 1uF C728 3D R775 330K 3D C739...

Page 21: ... TE4P B2 TE4N B1 TD4P B3 TD4N C3 TCLK4P C1 TCLK4N C2 TC4P D2 TC4N D1 TB4P D3 TB4N E3 TA4P E1 TA4N E2 TE3P F2 TE3N F1 TD3P F3 TD3N G3 TCLK3P G1 TCLK3N G2 TC3P H2 TC3N H1 TB3P H3 TB3N J3 TA3P J1 TA3N J2 TE2P K2 TE2N K1 TD2P K3 TD2N L3 TCLK2P L1 TCLK2N L2 TC2P M2 TC2N M1 TB2P M3 TB2N N3 TA2P N1 TA2N N2 TE1P P2 TE1N P1 TD1P P3 TD1N R3 TCLK1P R1 TCLK1N R2 TC1P T2 TC1N T1 TB1P T3 TB1N U3 TA1P U1 TA1N U2...

Page 22: ......

Page 24: ...oken Freezing 4 5 Vertical bar Horizontal Bar 5 6 B Power Problem No Power Not turn on 6 7 Turn off Instant under watching 7 8 C Sound Problem No sound Sound distortion 8 10 E General function Problem RF emitter checking 10 First of all Check whether there is SVC Bulletin in GCSC System for these model Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE...

Page 25: ...tal X2 3 3V 5V Rom update 2 Replace Control B D A3 A5 A6 SVC R C Pattern Check Sound Sound OK Y Close Y Move No Picture No sound Section A2 Check LVDS Cable Replace Main B D Normal N Y N Move Power problem Section Normal Normal Move Power problem Section N A4 A8 A11 A12 A13 First of all Check whether all of cable between board was inserted properly or not Main B D Power B D Power B D Y sus B D Pow...

Page 26: ...mal Sound N Check Speaker ON Off setting in OSD Menu Close Y Normal Sound N Close Check Speaker jack connection Speaker Cable open Y Normal voltage N Check 17V Audio IC B on Power B D Check Power B D Replace Power B D Check Audio IC Short Replace Main B D SVC Bulletin Apply SVC Bulletin S W Upgrade etc N Normal Sound N Y Close Y Check Video A6 Copyright 2011 LG Electronics Inc All rights reserved ...

Page 27: ...Sus B D A5 Normal Picture Replace Y Sus B D Normal Picture Y N 1 Check Control B D 2 Replace Board Normal Picture A13 Check Y Drive B D Replace B D Y Close N Dark Picture Normal Picture Y Replace Module N Close 1 Check Z Sus Board 2 Replace Board A9 Check Picture mode setting Picture Noise Normal Picture Y N Close Y N Check RF Cable Connection Check Tuner Replace Normal Picture Close Close 3 A16 A...

Page 28: ...evel meter By using Diagnostics menu on OSD Menu Press red key on R C Signal TEST Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y N Normal Picture Y Close N N Check S W Version Booster menu On Off Check Off On Check S W Upgrade SVC Bulletin Check Tuner replace Main B D Normal Picture Y N Y Close Normal Picture Y Close N A6 1 2 Normal Picture N Contact with signal dist...

Page 29: ...liminate foreign material on Connector N A13 CTRL B D Control board Check connection of Connector COF TCP on CTRL B D X B D Check connection of Connector FFC on Y Drive B D A20 A20 1 Connector re connection 2 Eliminate foreign material on FFC 1 Check Y Drive B D 2 Replace Board A16 Normal Picture N Y Close Replace Module 1 Check CTRL B D 2 Replace Board Normal Picture N Y Close N Y Normal Horizont...

Page 30: ...heck Power cord was inserted properly N Normal Close Y Check ST BY 5V on Power Board Normal Voltage A22 N Normal Signal Y Check Power B D Replace Power B D Check AC DET Signal on Power B D A22 Check RL_ON Signal on Power B D N Normal Signal Y Check Main B D Replace Main B D Check the other pin s Output voltage on Power B D Normal Close Y N Replace Power B D A22 A22 A23 Copyright 2011 LG Electronic...

Page 31: ...Z Sus Board especially Short or Open 2 Replace defective B D A8 A11 To check Power B D Protection Check Power Off History RCU Off 7 Turn off Under watching Off Timer Set A24 Off timer Function off KEY Off 2HOUR Off NO Signal Off Y N Don t appear Power Off History Move No Power problem Section This is not problem Normal operation Copyright 2011 LG Electronics Inc All rights reserved Only for traini...

Page 32: ...heck Input signal Cable connection Cable open RF external HDMI SCART Normal Sound Y Close Check AVL off on Clear voiceⅡ off on Y Normal Sound N Close N Problem in all input Problem in only DTV Problem in external input SCART HDMI Check whether Problem happen in same output of other equipments or not By connecting same output cable of other equipment DVD Player Set Top Box different maker TV etc Y ...

Page 33: ...onnector solder Normal operating Check B 5V On Main B D A26 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 A12 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A26 Replace Main B D Y Y N Check local key Operation Normal operating Check Repair Cable connection Connector solder A26 A27 Check Key Output signal Y Normal...

Page 34: ...ck Repair Cable connection Connector solder A28 Replace RF emitter board Y Display normally Close N Normal operating N Replace Main B D Y A28 Check the signal between the RF emitter and Mani board Normal Signal Check the RF emitter SW Ver at SVC menu Normal operating Close Y N Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 35: ...A7 7 Y Sus Board Checking Method 50R3 A8 8 Z Sus Board Checking Method 50R3 A9 11 Check 5V on Power B D A12 12 Control Board Checking Method 50R3 A13 13 Mal discharge Symptom Picture A14 14 PDP Module Rom Ver Checking method A15 15 Y Drive B D Checking method A16 17 Half picture X B D Checking method 50R3 A18 Next page Continued PDP TV Repair Process Reference data Index Copyright 2011 LG Electron...

Page 36: ...ethod A21 21 Power Problem Check voltage on Power board A22 22 Power board Checking Method A23 23 Check Power off History A24 24 Sound Problem Speaker cable checking method A25 25 Check Remote control IR operation A26 27 Check RF emitter operation A28 PDP TV Repair Process Reference data Index Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal...

Page 37: ...r H Line Bar 5 In case of no picture you can judge defect cause Module or Main B D If patterns appear defect cause is Main B D Tilt Key Making Revision PDP TV Symptom A Picture Problem Check Module pattern by Tilt key Repair Process Reference data Item A1 A1 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 38: ...tion 1 Check Audio output by using oscilloscope GND R or R or L or L Audio output waveform 2 Check whether speaker jack was inserted properly or not Repair Process Reference data A2 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 39: ...R360 N Y Check IC700 Status PDN 23 Reset 31 is High Check Reset R380 PDN R374 They must be High 3 3V Y N Check IC303 Power 17V C340 3 3V R365 R374 Check 17V P600 1 2 3 3V IC606 2 Y N Y Check Mstar I2S Output 27 28 29 30 on IC303 Replace MSTAR IC400 N Replace AMP IC303 Y Repair Process Reference data A2 1 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes L...

Page 40: ...igital TV Check video output Follow procedure All source audio trouble shooting Follow procedure digital TV video trouble shooting Y N HDMI Y N Check video output Follow procedure HDMI video trouble shooting Y N Repair Process Reference data A2 2 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 41: ...ooting Y Follow procedure analog TV video trouble shooting N Replace MSTAR IC IC400 Check 3 on TU300 for 5V Check IC605 output Voltage N Y Check SIF signal C301 Replace TU300 N Y Check SIF signal C301 Check SIF line N Y Y Repair Process Reference data A2 3 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 42: ...02 Replace the Resistor Check IC400 signal JK210 Component C441 C442 JK100 JK101 SCART C435 C436 C437 C438 JK208 RGB C443 C444 JK207 Side AV C439 C440 Replace the Capacitor Follow procedure All source audio trouble shooting Making Revision PDP TV Input Block Component AV RGB Audio Problem Y Y Y N N N Repair Process Reference data A2 4 Copyright 2011 LG Electronics Inc All rights reserved Only for ...

Page 43: ...ical Audio Problem N Check Signal JK204 3 Check SPDIF signal R296 Replace MSTAR IC400 Check 5V 2 on JK204 Y N Check P601 Output L604 L605 Y A2 5 Repair Process Reference data Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 44: ...fer to the Module label for Va specification Check Vs Adjust Vs Voltage Refer to the Module label for Vs specification Repair Process Reference data A3 A3 Control Board Power Board Y Sus Board Z Sus Board PDP Module Label Main Board Check Vs Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ... Code 128 Contains the manugacture No Manugacture No Adjusting Voltage DC Va Vs Adjusting Voltage Set up Vy Vsc Ve Vzb The trade name of LG Electronics Manufactured date Year Month Warning UL Approval Mark UL Approval No Model Name Max Watt Max Volts Max Amps Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 46: ...djustment 50R3 1 Vsc 150V on Y Sus B D Check Point R324 Adjustment Point VR301 2 Vy 190V on Y Sus B D Check Point R334 Adjustment Point VR302 A5 Module Label A5 Vy adjustment YSUS board Fuses Vsc adjustment Vzb Vy Vsc Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ...ocess Reference data 3 VZB 115V on Z Sus B D Check Point R156 Adjustment Point VR204 Voltage Check Adjustment 50R3 Module Label A5 A5 ZSUS board Vzb Vy Vsc ZSUS board Vzb adjustment Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 48: ...IC600 Output 1 2V IC301 Output Y N Check Video color Check Monitor Out Video Scart out Check other input OSD Check IIC Line Check TU_SCL SDA Line N Replace Tuner N Y N Y Check Module N Y Change MSTAR IC400 Y A6 1 Repair Process Reference data A6 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ...heck RF Cable Check CVBS signal TU601 11 Pin Replace Tuner TU300 Y N Check IC605 Output Voltage L610 Y N Y Replace MSTAR IC400 Check 5V voltage on TU300 Pin3 A6 2 Repair Process Reference data A6 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...al on R411 C413 C415 Y Check the damage of JK210 And Replace Connector N Y Replace MSTAR IC400 Y Check Component Cable Measured signals depend on the input signal A6 3 Repair Process Reference data Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ...signal R404 R406 R408 Y Check P205 Replace connector P205 Y N Y Replace R404 R406 R408 N Replace MSTAR IC400 Y Check RGB Cable conductors for damage Y Measured signals depend on the input signal A6 4 Repair Process Reference data Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...423 CVBS Replace Capacitor Check AV port of JK207 Side JK100 JK101 Rear Replace connector N Replace MSTAR IC400 Check AV Cable for damage or open conductors Measured signals depend on the input signal Y Y Y Y N A6 5 Repair Process Reference data A6 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ...ownload EDID Check HDMI Cable for damage or open conductors Replace Connector Replace MSTAR IC400 Y Y Y Y N N Check JK200 J201 J202 for proper connection or damage A6 6 Repair Process Reference data A6 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ... If Fuse is defects it should check again voltage of 5V Va Va after replacing the fuse 3 In case there are no voltage of 5V Va Vs the board is failure it need to replace the board Pic 2 Pic 1 DMM mode A7 Pic 1 Fuse check Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ... Measurement method 0 4V 0 5V Q610 Q612 0 45V 0 55V Q608 Q609 0 45V 0 55V Q601 Q602 0 35V 0 45V Q603 Q605 D604 D605 HS602 0 35V 0 45V Forward O L Overload Reverse D602 HS603 0 35V 0 45V Forward O L Overload Reverse Position Direction Circuit No HS601 D610 Q606 Q607 Forward 0 35V 0 45V 0 45V 0 55V Reverse O L Overload Specifications Diode FET HS603 HS601 HS602 YSUS board FS202 5V fuse FS203 Vs fuse...

Page 56: ...de FET by using digital multi meter Measuring Method Specifications 0 45V 0 55V Q102 Q103 0 5V 0 6V 0 35V 0 45V Q106 Q109 Position Direction Circuit No HS101 D114 D118 Q107 Q110 Forward 0 35V 0 45V 0 35V 0 45V Reverse O L Overload HS102 D109 D110 D108 D111 Q104 Q113 Q114 Forward 0 35V 0 45V Reverse O L Overload Diode FET ZSUS board FS202 5V fuse P203 HS102 HS101 Copyright 2011 LG Electronics Inc A...

Page 57: ...Check 5V 17V on Power B D Repair Process Reference data A12 Measure 5V voltage Power Board P813 P600 P813 Measure 17V voltage A12 17 02 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...heck crystal X1 output Check 3 3V 5V IC Check MCM at VS_DA by using digital multi meter Check Crystal X1 Check Input voltage Check IC IC53 IC51 Check oscillation of Crystal Normal 25 MHZ MCM Check point VS_DA GND Normal 3 3V Check MCM 3 3V Pin 14 15 18V IC51 IC53 P2 18V Pin14 15 5V 3 3V GND P105_FL1 FL2 5V Check LED On Copyright 2011 LG Electronics Inc All rights reserved Only for training and ser...

Page 59: ...e Symptom Repair Process Reference data Dark picture caused by Mal discharge A14 Dot type Mal discharge symptom Scan type Mal discharge symptom A14 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 60: ... Rom Label on control board Rom ver Label Check by using SVC Remote controller Press In start Press 0413 Select Panel Control Check Module Rom ver Refer to the Module Rom upgrade manual for Rom upgrade USB Type Jig A15 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ...hod 50R1 Repair Process Reference data A16 Y drive board Check all output pins of scan IC connector using DMM Input signal connector Scan IC DMM Digital Multi Meter Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...RL board and X board Replace the X B D Check TCP connection after X B D replacement Connections between panel and X B D Right display Picture 1 Check replace right X B D Both ends display Picture 2 Check replace center X B D Left display Picture 3 Check replace left X B D Picture 1 Picture 2 Picture 3 Half display abnormal Partly display abnormal abnormal abnormal Va Va Va from CTRL from CTRL from...

Page 63: ...B D X B D 2 Check CTRL B D 3 Replace CTRL B D Many irregular vertical lines 1 Check connection CTRL B D X B D 2 Check CTRL B D 3 Replace CTRL B D Horizontal Line or Bar 1 Check connection Y Sus B D Panel 2 Check Y Sus B D 3 Replace Y Sus B D First of all Check whether all of cable between board was inserted properly or not Next Check whether there is foreign material on connector A19 Copyright 201...

Page 64: ...ck bad soldering on Chip resistance Defect symptom 192 Out Put TCP Type TCP Tape Carrier Package is film for IC connect with Electrode pattern Direct Bonding on X B D FFC Type Connector to connect between Electrode PAD Of PANEL and Y Drive B D Z Sus B D A20 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ... Red Button on R C Æ Singal TEST Diagnostics 1 Check whether Signal Strength Signal Quality is over 50 or not 2 If Signal Strength Signal Quality is under 50 install the Booster to increase signal level A21 A21 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...blem Checking Order Checking Order Pin Map Power B D Main B D No Checking Point Spec Remark 1 STBY 5V 2 5V 5V 3 17V 17V 4 AC DET High 3 3V 5V 5 RL_ON High 3 3V 5V 6 M_ON High 3 3V 5V A22 P813 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ...3 YUYANG If happen Power board Protection check whether there is Short or Open on Y SUS Z SUS B D or not Checking Method Va Voltage ADJ value value Adjust way Check 5V Va Vs voltage For Voltage specification refer to the PDP Module Label SC101 Vs Voltage ADJ Adjust Va Vs voltage Vs adjust Va adjust A23 P811 Power B D Y Sus B D P811 P813 NAME PIN 7 6 5 4 3 2 1 VS VS NC GND GND VA M5V Copyright 2011...

Page 68: ... Pop up Module Rom ver LAST HISTORY 1 5 Appear Power off history 5ea 1 is the latest history RCU OFF Power off by Remote control KEY OFF Mechanical power switch off 2HOUR OFF After turn on by OnTimer There is no operation for 2hours NO SIGNAL OFF In case that there is no signal for 15minutes A24 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Intern...

Page 69: ...r side or not 2 Check whether speaker cable have problem disconnection wire or not A25 Making Revision PDP TV Symptom Repair Process Reference data Speaker cable checking method C Sound Problem A25 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 70: ...lti meter when operate remote control Test Condition for case 3 Check Point Pin 1 IR TV power on status Multi meter Select DC 10V Checking method Check Remote control IR operation IR Local key Board for 2 3 4 550 TOOL IR Board A26 A26 TOUCH_VER_CHK NC NC IR GND KEY1 KEY2 LED RED GND SCL SDA GND 3 3V ST NC NC Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purpos...

Page 71: ...e 3 Check Point Pin 2 3 Key1 Key2 TV power on status Multi meter Select DC 10V A27 P P Vol Vol OK Menu Input Power D General function defect Check Local Key operation Symptom A27 TOUCH_VER_CHK NC NC IR GND KEY1 KEY2 LED RED GND SCL SDA GND 3 3V ST NC NC IR Local key Board for 2 3 4 550 TOOL Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Us...

Page 72: ...ion for case 3 Check Point Pin 12 TV power on status Multi meter Select DC 10V A28 D General function defect Check RF emitter operation Symptom A28 3D_L R_SYNC 3D_RF_GPIO2 3 3V GND 3D_RF_RXD 3D_RF_TXD 3D_RFMODULE_RESET 3D_RFMODULE_DC 3D_RFMODULE_DD GND 3D_RF_GPIO0 3D_RF_GPIO1 RF emitter Board Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal ...

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