LG 26LV255C Service Manual Download | Manualshive

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LGE Internal Use Only

Copyright ©2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

7. HDMI Input

(1) DTV Mode

No.

Resolution

H-freq(kHz)

V-freq.(Hz)

Pixel clock(MHz)

Proposed

Remark

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*720

45

60

74.25

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

74.17/74.25

HDTV

1080I

6.

1920*1080 28.125

50.00

74.25

HDTV

1080I

7.

1920*1080 26.97/27

23.97/24

74.17/74.25

HDTV

1080P

8.

1920*1080

33.716/33.75

29.976 /30.00

74.25

HDTV 1080P

9.

1920*1080 56.250

50

148.5

HDTV

1080P

10.

1920*1080 67.43/67.5

59.94/60

148.35/148.50

HDTV

1080P

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Summary of Contents for 26LV255C

Page 1: ...SIS LD01U MODEL 42LV3500 3550 3551 MODEL 42LV355A 355C 355N 355U MODEL 42LV3500 ZA 42LV3551 ZD MODEL 42LV3550 355A 355C 355N 355U ZB 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 MFL62863058 1103 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: ...herlands Switzerland Hungary Austria Slovenia Sweden Denmark Finland Norway Bulgaria DTV T Analog UK France Spain Italy Belgium Russia Luxemburg Greece Czech Croatia Turkey Morocco 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 A...

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: ...nt1 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 is executed by Remote control 10...

Page 11: ...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 Service main Assembly EDID have to be...

Page 12: ...g 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 80 61 40 45 40 31 40 01 01 30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 45 00 A0 5A 00 00 00 1E 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 1E 53 10 00 0A 20 20 20 20 20 20 d 70 d 00 e 80 FF FF FF FF FF FF F...

Page 13: ...5200 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 ...

Page 14: ...Gset 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 meth...

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: ...any 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 ma...

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: ...6 A0M RLV0N RED 8 U25 A1P RLV1P RED 7 U24 A1M RLV1N RED 6 V26 A2P RLV2P RED 5 V25 A2M RLV2N RED 4 V24 A3P RLV4P RED 1 W24 A3M RLV4N RED 0 Y26 A4P RLV5P GREEN 9 Y25 A4M RLV5N GREEN 8 Y24 BCKP TCON13 GREEN 1 AC26 BCKM TCON12 GREEN 0 AC25 B0P RLV6P GREEN 7 AA26 B0M RLV6N GREEN 6 AA25 B1P RLV7P GREEN 5 AA24 B1M RLV7N GREEN 4 AB26 B2P RLV8P GREEN 3 AB25 B2M RLV8N GREEN 2 AB24 B3P TCON11 BLUE 9 AC24 B3M...

Page 20: ... 24 25 C442 10uF 16V OPT R425 100 POWER_24_INV_CTL 0 R471 POWER_22_PWM_DIM C426 68uF 35V R402 100 C436 0 01uF 25V 0 01uF L406 3 6uH NR8040T3R6N R412 0 POWER_16_GND 12V 15V C424 0 1uF 16V R429 47K C485 0 1uF 16V IC402 AZ2940D 2 5TRE1 2 GND 3 VOUT 1 VIN R441 75K 1 8W 1 Q405 2SC3052 E B C R430 10K OPT 1 26V_VDDC C418 0 1uF 50V R435 22K L421 3 6uH NR8040T3R6N R423 10K 1 R418 6 8K OPT C447 0 1uF 16V IC...

Page 21: ...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 22: ... R2416 10K OPT R2405 10K 1 NEC_EEPROM_SCL D2402 5 6V AMOTECH R2411 100 EYEQ TOUCH_KEY IR C2401 0 1uF R2412 100 EYEQ TOUCH_KEY S T_SDA JP2409 C2406 1000pF 50V R2425 47K OPT 3 5V_ST Q2405 2SC3052 OPT E B C C2410 0 1uF 16V OPT C2405 0 1uF 16V C2407 100pF 50V L2403 BLM18PG121SN1D R2404 10K 1 R2430 10K OPT R2413 1 5K JP2408 C2404 1000pF 50V JP2411 D2401 5 6V AMOTECH 3 5V_ST 3 5V_ST L2402 BLM18PG121SN1D...

Page 23: ... 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 24: ... 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 25: ...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 26: ...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 27: ..._DIM C700 10uF 16V OPT RXD1 RXA0 RXC1 R710 10K OPT PWM_DIM RXBCK C710 0 1uF 16V WAFER_FHD SCAN_BLK1 OPC_OUT RXA2 RXB2 RXD2 P705 FF10001 30 HD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 RXD1 P703 FI RE51S HF J R1500 WAFER_FHD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48...

Page 28: ..._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 29: ...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 30: ...U3702 3 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 S...

Page 31: ...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 32: ...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 33: ... WH O SPRING 3C RD CONTACT 4C RD O SPRING 5C RD E LUG D9906 30V SIDE_COMP R9914 10K SIDE_CVBS C9906 100pF 50V SIDE_CVBS SIDEAV_R_IN R9906 470K SIDE_CVBS D9908 5 6V OPT R9905 470K SIDE_CVBS R9912 1K SIDE_COMP L9902 BLM18PG121SN1D SIDE_CVBS C9905 100pF 50V SIDE_CVBS R9916 12K SIDE_CVBS SIDEAV_L_IN JK9901 KJA PH 1 0177 SIDE_AV_GENDER 3 M3_DETECT 4 M4 5 M5_GND 1 M1 6 M6 SIDEAV_DET R9909 75 SIDE_COMP L...

Page 34: ... 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 35: ... 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 36: ...8pF 50V OPT R2100 2 2K LED_DRIVER_D L C2102 18pF 50V OPT C2100 18pF 50V OPT V_SYNC L DIM_MOSI C2104 18pF 50V OPT C2101 18pF 50V OPT R2101 2 2K LED_DRIVER_D L LED_DRIVER_D L_SDA P2100 12507WR 08L L DIM_LED DRIVER 1 2 3 4 5 6 7 8 9 3 3V_Normal LED_DRIVER_D L_SCL 3 3V_Normal R2103 10K FRC_L DIM_REVERSE_SEL R2102 10K OPT R4029 22 LED_DRIVER_D L R4028 22 LED_DRIVER_D L L DIM_LED 20101023 21 GP2R Copyri...

Page 37: ...06 22 3D_SG M_REMOTE_RX R3405 22 3D_SG R3402 100 3D_SG R3408 100 3D_SG L3401 120 ohm 3D_SG R3411 2 7K 3D_SG 3 3V_Normal R3410 2 7K 3D_SG R3412 2 7K 3D_SG DD_MREMOTE M_RFModule_RESET R3403 22 3D_SG 3 3V_Normal M_REMOTE_TX R3401 100 3D_SG 3D_GPIO_2 3D_GPIO_1 R3404 22 3D_SG R3409 100 3D_SG DC_MREMOTE R3407 100 3D_SG 1 1 1 0 0 1 RESERVED GPOIO_0 0 ALL 3D SG OPTION 1 RESERVED 1 GPOIO_2 3D Off 50Hz FREQ...

Page 38: ......

Page 39: ... 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 40: ...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 41: ...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 42: ...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 43: ... 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 44: ...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 45: ...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 46: ... 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 47: ...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 48: ... 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 49: ...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 50: ...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 51: ...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 52: ...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 53: ...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 54: ...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 55: ...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 56: ...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 57: ...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 58: ...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 59: ... 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 60: ...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 61: ...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 62: ...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 63: ...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 64: ...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 65: ...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 66: ...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 67: ...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 68: ...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 69: ...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 70: ...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 71: ...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 72: ...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 73: ... 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 74: ...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 75: ...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 76: ...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 77: ...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 78: ... 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 79: ...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 80: ...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 81: ... 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 82: ...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 83: ... 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 84: ...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 85: ...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 86: ...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 87: ...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 88: ...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 89: ... 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 90: ...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 91: ...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 92: ...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 93: ...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 94: ...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 95: ...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 96: ...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 97: ...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 98: ...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 99: ...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...

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