LG 26LV2500 Page 1 Service Manual Download

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LED LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LB01S

MODEL : 26LV2500

26LV2500-CC

Internal Use Only

P/NO : MFL67002103 (1103-REV00)

http://biz.lgservice.com

Summary of Contents for 26LV2500

Page 1: ... TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LB01S MODEL 26LV2500 26LV2500 CC Internal Use Only P NO MFL67002103 1103 REV00 http biz lgservice com ...

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 14 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: ...awing and specification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC No Item Specification Measurement Result Remarks 1 Market Hong Kong DTV Analog China Hong Kong 2 Broadcasting system 1 PAL DK 2 PAL I 3 ...

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 6 RGB Input PC No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remarks 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 60Hz 852 480 60Hz 640 480 60Hz Display 3 800 600 37 87...

Page 8: ...08 875 SXGA HDCP FHD model 7 1920 1080 67 5 60 00 138 625 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 ...

Page 9: ... 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 detec...

Page 10: ...ut 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 remote control 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 contro...

Page 11: ...20 Offset adj internal white pattern wb 00 2f Offset adj completed wb 00 ff End White Balance adj internal pattern disappears Ex wb 00 00 Begin white balance auto adj wb 00 10 Gain adj ja 00 ff Adj data jb 00 c0 4 4 Adj Command Protocol Command Format START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP LEN Number of Data Byte to be sent CMD Command VAL FOS Data value CS Checksum of sent data A A...

Page 12: ...329 1 0 2 279 288 295 308 319 338 2 3 5 278 286 294 306 318 336 3 6 9 277 285 293 305 317 335 4 10 19 276 283 292 303 316 333 5 20 35 274 280 290 300 314 330 6 36 49 272 277 288 297 312 327 7 50 79 271 275 287 295 311 325 8 80 149 270 274 286 294 310 324 9 Over 150 269 273 285 293 309 323 O S Edge LED Models Coordinate Mode x y Temp uv Cool 0 276 0 002 0 283 0 002 11000K 0 0000 Medium 0 285 0 002 ...

Page 13: ...nly Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes 13 D sub to D sub DVI D to HDMI or HDMI to HDMI For HDMI EDID For Analog EDID 4 7 Outgoing condition Configuration Push IN STOP key then in stop processing will start If processing is complete TV will turn off automatically Must not AC power OFF during processing 4 8 Internal pressure Confirm whether i...

Page 14: ...T Y Pb Pr 2 Comp _R L _IN JK1604 2 CVBS_DET CVBS IN 2 CVBS _R L _IN EEPROM 2K IC1105 EEPROM 2K IC1105 JK1104 JK1102 9 R G B H V sync DET ISP_RXD TXD 2 RGB_DDC_SCL SDA 2 PC _R L _IN JK1101 MAX3232 IC1101 MAX3232 MAX3232 IC1101 IC1101 2 SIDE_USB_DM DP 1 5V_USB 2 USB_CTL USB_OCD AP2191DSG IC1450 AP2191DSG AP2191DSG IC1450 IC1450 RGB In PC Audio AV1 COMP1 COMP2 USB Side JK1450 SPDIF Digital JK1103 1 S...

Page 15: ...01 SPI Flash SPI Flash 8M IC1401 8M IC1401 5 SCK SDI SDO CS WP 2 NEC_EEPROM_SCL SDA 2 LED_R B 3 KEY1 2 IR EEPROM 16K IC1001 EEPROM 16K IC1001 NEC_Micom IC1002 NEC_Micom NEC_Micom IC1002 IC1002 Control SOFt touch P2401 Control Control SOFt SOFt touch touch P2401 P2401 2 NEC_SCL SDA Power B D P403 Power B D Power B D P403 P403 2 INV_CTL RL_ON Debugger P1001 Debugger Debugger P1001 P1001 6 NEC_ISP_TX...

Page 16: ...he 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 16 LGE Internal Use Only Copyright LG Electronics Inc All rights reserved Only for training and...

Page 17: ...P BLUE 5 AE26 C0M LLV0N BLUE 4 AE25 C1P LLV1P BLUE 3 AF26 C1M LLV1N BLUE 2 AF25 C2P LLV2P BLUE 1 AE24 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 GP...

Page 18: ...IO19 E6 B_RXCP D3 B_RXCN C1 B_RX0P 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...

Page 19: ...P RLV3P RED 3 W26 ACKM RLV3N RED 2 W25 A0P RLV0P RED 9 U26 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...

Page 20: ...DEBUG R1012 10K B L_LAMP OCD1B R1001 47K NEC_EEPROM_SCL R1048 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_...

Page 21: ... SYMBOL MARK OF THE SCHEMETIC SIGN6409 C1453 0 1uF C1452 10uF 10V USB1_OCD SIDE_USB_DP C1451 22uF 16V R1459 2K 1 8W 1 D1451 5 6V CDS3C05HDMI1 OPT 5V_USB USB1_CTL R1458 2K 1 8W 1 R1455 4 7K OPT SIDE_USB_DM L1451 MLB 201209 0120P N2 120 ohm D1452 5 6V CDS3C05HDMI1 OPT R1454 10K 3 3V_Normal R1451 47 L1451 1 CIS21J121 JK1450 3AU04S 305 ZC LG 1 2 3 4 5 IC1450 AP2191DSG EAN61849601 3 IN_2 2 IN_1 4 EN 1 ...

Page 22: ...D0_GND 3 D2 16 7 D0 6 D1 15 HDMI_CEC R881 22 D802 OPT GND 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_AT...

Page 23: ... DB 010 1 RED 2 GREEN 3 BLUE 4 GND_1 5 DDC_GND 6 RED_GND 7 GREEN_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...

Page 24: ...MPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC R1124 100 JK1101 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 C1...

Page 25: ...DDR2_A6 B25 B_DDR3_A9 DDR2_A12 T26 B_DDR3_A10 DDR2_RASZ D24 B_DDR3_A11 DDR2_A11 A26 B_DDR3_A12 DDR2_A0 C25 B_DDR3_A13 DDR2_A7 T25 B_DDR3_BA0 DDR2_BA2 P24 B_DDR3_BA1 DDR2_CASZ C26 B_DDR3_BA2 DDR2_A5 R26 B_DDR3_MCLK DDR2_MCLK D26 B_DDR3_MCLKZ DDR2_MCLKZ D25 B_DDR3_CKE DDR2_DQ5 E24 B_DDR3_ODT DDR2_ODT N25 B_DDR3_RASZ DDR2_WEZ M26 B_DDR3_CASZ DDR2_BA1 N24 B_DDR3_WEZ DDR2_BA0 N26 B_DDR3_RESETB R25 B_DD...

Page 26: ...CAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 3 3V_Normal 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...

Page 27: ...0pF 50V 0 1uF C515 50V 24V 0 1uF C537 50V C520 1uF 25V 3 5V_ST 0 1uF 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 ...

Page 28: ...5 10uF 16V EU_OPT C1625 0 1uF 50V EU_OPT COMP2_DET R1672 470K 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 R168...

Page 29: ... SIDE_AV_3HOLE 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 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_DETE...

Page 30: ...1 0 1uF OPT R1920 100 R1909 0 OPT 5V_CI_ON AR1905 33 CI_OE 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 ...

Page 31: ... MDS61887708 GAS3 4 12 5T_GAS MDS62110205 GAS1 2 7 5T_GAS 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 MDS621...

Page 32: ...5V 12V 15V C7540 3 3uF 50V Adapter R464 10K Q7522 AO3438 FRC G D S R7505 4 7K C7570 0 1uF 16V R7559 12K TP5303 12V 15V C7526 0 1uF 16V C7511 0 1uF 16V NON_Adapter C468 0 1uF 16V PWM_DIM L413 C7867 0 1uF 16V R7560 10K R7582 100 1 C7925 2 2uF Adapter 50V R7558 10K R7500 10K Adapter R7529 100K Adapter 3 5V_Normal L7511 OLP C7957 0 1uF 16V OPT C7952 10uF 25V R7572 0 NON_Adapter R455 15K 1 16W 5 C7567 ...

Page 33: ...601 0 1uF 16V 19 22_LAMP D7601 5 6V 19 22_LAMP LED_B LG_LOGO D902 5 6V CDS3C05HDMI1 NEW_SUB R2427 0 R2413 1 5K L2401 BLM18PG121SN1D C907 18pF 50V OPT R2402 100 L7600 BLM18PG121SN1D 19 22_LAMP NEC_EEPROM_SDA L2404 BLM18PG121SN1D P2401 12507WR 12L OLD_SUB 1 2 3 4 5 6 7 8 9 10 11 12 13 R2425 47K OPT LED_R BUZZ C2403 0 1uF 16V S T_SCL C2404 1000pF 50V S T_SDA KEY1 3 3V_Normal C2406 1000pF 50V P7600 12...

Page 34: ... RXA2 RXA0 RXACK L7902 120 ohm HD_60Hz_SMALL RXA2 SMALL_NC2 3 3V_Normal TP722 RXB0 SMALL_NC1 R7914 0 HD_60Hz_NORMAL PANEL_VCC R7915 0 OPT C7903 0 1uF 16V HD_60Hz_NORMAL RXA3 C7905 10uF 16V OPT RXA2 RXB3 SMALL_OPC_EN RXA3 RXA0 RXA2 C710 0 1uF 16V WAFER_FHD R705 3 3K OPT RXA3 SMALL_OPC_OUT RXB4 SCAN_BLK1 OPC_OUT C7904 1000pF 50V OPT SCAN_BLK2 SMALL_NC1 RXB4 SMALL_NC3 RXA1 RXACK PWM_DIM RXACK RXB3 RX...

Page 35: ...D 2 OUTPUT 3 INPUT 1 ADJ GND R3706 0 FULL_NIM_BR TU3702 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 ...

Page 36: ... SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED 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 ...

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