LG 26LD330, Service Manual

Page 1: ...READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LP91H MODEL 26LD330 26LD330 MA 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 MFL63285205 1003 REV00 ...

Page 2: ...ly Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 SPECIFICATION 3 ADJUSTMENT INSTRUCTION 7 TROUBLE SHOOTING 14 BLOCK DIAGRAM 17 EXPLODED VIEW 18 SVC SHEET ...

Page 3: ...heck 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 to...

Page 4: ...parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC No Item Specification Measurement Remark 1 Screen Size 66 cm 26 inch wide Color Display Module Resolution 1366...

Page 5: ...rdinates White X Typ 0 278 Typ Sharp Y 0 03 0 285 0 03 RED X 0 642 Y 0 341 Green X 0 285 Y 0 603 Blue X 0 146 Y 0 066 White X Typ 0 280 Typ AUO Y 0 03 0 290 0 03 RED X 0 640 Y 0 330 Green X 0 281 Y 0 590 Blue X 0 150 Y 0 050 4 Module Contrast ratio 2 400 3 000 AUO 2 000 2 500 IPS 5 Luminance Variation 1 3 5 Chroma Brightness Optical 1 LCD Module The Color Coordinates check condition 50 cm from the...

Page 6: ...log PC RGB DTV NOT SUPPORT 6 Component Video Input Y PB PR No Specification Remarks Resolution H freq kHz V freq Hz Pixel Clock MHz 1 720 480 15 73 59 94 13 500 SDTV DVD 480I 525I 2 720 480 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720 576 15 625 50 00 13 500 SDTV DVD 576I 625I 50 Hz 4 720 480 31 47 59 94 27 000 SDTV 480P 5 720 480 31 50 60 00 27 027 SDTV 480P 6 720 576 31 25 50 00 27 000 SDTV 576P ...

Page 7: ...ification Proposed Remarks Resolution H freq kHz V freq Hz Pixel Clock MHz 1 720 x 480 15 73 59 94 13 500 SDTV DVD 480I 525I Spec out 2 720 x 480 15 75 60 00 13 514 SDTV DVD 480I 525I but display 3 720 x 576 15 625 50 00 13 500 SDTV DVD 576I 625I 50 Hz 4 720 x 480 31 47 59 94 27 SDTV 480P 5 720 x 480 31 5 60 00 27 027 SDTV 480P 6 720 x 576 31 25 50 00 27 SDTV 576P 7 1280 x 720 44 96 59 94 74 176 H...

Page 8: ...ms 1 Download the MSTAR main software IC800 Mstar ISP Utility 1 Using D L Jig 2 Using USB Memory Stick 2 Input Tool Option 3 Download the EDID EDID datas are automatically downloaded when adjusting the Tool Option2 4 ADC Calibration RGB Component 4 Check SW Version 3 2 SET assembly adjustment items 1 Input Area option 2 Adjustment of White Balance Auto Manual 3 Input Tool Option Area option 4 Inte...

Page 9: ...input menu can differ the model spec Refer to Job Expression of each main chassis assembly EBTxxxxxxxx for Option value Caution Don t Press IN STOP key after completing the function inspection 4 3 EDID D L method Recommend that don t connect HDMI and RGB D SUB cable when downloading the EDID If not possible recommend that connect the MSPG equipment There are two methods of downloading the edid dat...

Page 10: ...00 BC 88 21 00 00 18 00 00 00 FC 00 4C 60 47 20 54 56 0A 20 20 20 20 20 20 20 00 00 00 FD 70 00 3A 3F 1C 44 0F 00 0A 20 20 20 20 20 20 00 56 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 01 14 01 03 80 46 27 78 0A D9 B0 A3 57 49 9C 25 20 11 49 4B 21 08 00 45 40 01 01 61 40 01 01 01 01 30 01 01 01 01 01 01 01 1D 00 72 51 D0 1E 20 6E 28 40 55 00 C4 8E 21 00 00 ...

Page 11: ...djustment mode at the same time heat run mode when pushing the power on by power only key Maintain the DDC adjustment mode with same condition of Heat run Maintain after AC off on in status of Heat run pattern display 2 Release the DDC adjustment mode Release the adjust mode after AC off on or std by off on in status of finishing the Hear run mode Release the Adjust mode when receiving the aging o...

Page 12: ... and change Dynamic Contrast Off Dynamic Colour Off Picture Mode change Vivid Vivid User If you miss the upper condition the coordinates of W B can be lower than the spec 5 3 Checking the function of Local Dimming using adjusts Remote control Dimming checking is doing in Power Only mode Enter the signal of component Pattern 7 combination Time 225 1920 1080 Push the button Tilt Checking the functio...

Page 13: ...y A PROCESS Fail Fail Pass Pass Check LED Assy Change IC1002 IC1008 Q1003 Pass Check short of IC1001 IC1005 IC1007 Fail Re soldering or Change defect part of IC1001 IC1005 IC1007 Fail No Raster B Process Check LED status On Display Unit Repeat A PROCESS Pass Fail Check Output of IC802 Change IC802 Fail Change Inverter Connector or Inverter Fail Pass Fail Pass Change LVDS cable Fail Check LVDS Cabl...

Page 14: ...ct part Pass No Raster on COMMPONENT Signal Check Input source Cable and Jack Pass Re soldering or Change the defect part Pass Check the Input Output Of IC800 Fail Re soldering or Change the defect part Repeat A B Process Check the Input Output of JK101 Fail Pass No Raster on HDMI Signal Check Input source Cable And Jack Pass Check the Input Output of JK301 JK302 JK303 Fail Re soldering or Change ...

Page 15: ...nput Fail No Raster On AV Video S Video Signal No Signal On TV RF Signal Check Input source Cable and Jack Pass Check Input source Cable and Jack Pass Check The Input Output of JK101 Pass Re soldering or Change the defect part Pass Fail Pass Repeat A B Process Check the Input Output Of IC800 Fail Re soldering or Change the defect part Pass Check The Input Output Of TU500 Pass Re soldering or Chang...

Page 16: ...WC08 EEP_SCL SDA EEP_SCL SDA TXCE2 TXCE3 TXCLKE TXCE1 TXCE0 TXCO1 TXCO3 TXCO2 TXCO0 TXCLKO M_SCL SDA MAIN SCLAER Matrix HD LGE 4765A FHD LGE 4767A IC800 EEPROM 24C02 IC302 TU500 IC802 IC803 IC801 IC600 P402 P403 M_SCL SDA SIDE REAR HDMI3 JK303 USB JK204 RS 232C JK200 USB SVC JK205 HDMI1 JK301 HDMI2 JK302 EEPROM 24C02 IC301 EEPROM 24C02 IC300 DDC_SCL1 SDA1 DDC_SCL2 SDA2 DDC_SCL3 SDA3 Contr oller ST...

Page 17: ...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 18: ...119 12K R120 12K R113 10K R115 10K R116 10K R100 220K R111 220K R112 220K R110 75 R114 10K JK101 PPJ238 01 5D GN2 O SPRING 6D GN2 E LUG 4D GN2 CONTACT 7E BL2 E LUG S 5E BL2 O SPRING 7F RD2 E LUG S 5F RD2 O SPRING_1 5G WH2 O SPRING 4H RD2 CONTACT 5H RD2 O SPRING_2 6H RD2 E LUG 6A YL1 E LUG 5A YL1 O SPRING 4A YL1 CONTACT 5B WH1 O SPRING 4C RD1 CONTACT 5C RD1 O SPRING 6C RD1 E LUG R121 75 JP102 Q102 ...

Page 19: ... OCP_READY C209 10uF 16V OCP_READY L200 120OHM OCP_READY 5V_USB R209 1K OCP_READY R210 4 7K OCP_READY R237 0 Non_OCP C210 10uF 6 3V R207 68 R208 68 C213 68pF 50V C211 68pF 50V R219 4 7K READY L201 500 C212 220uF 16V C214 100uF 16V D213 OCP_READY A AC C R238 510 OCP_READY R224 10K SIDE_AV R225 10K SIDE_AV JK200 SPG09 DB 009 1 2 3 4 5 6 7 8 9 10 JK201 PPJ235 01 SIDE_AV 4A YL O SPRING 5A YL E LUG 3A ...

Page 20: ...F R327 100 R308 10K R310 10K R309 10K R311 10K R316 56K READY JK302 YKF45 7058V 14 NC 13 CEC 5 DATA1_SHIELD 20 SHIELD 12 CLK 11 CLK_SHIELD 2 DATA2_SHIELD 19 HPD 18 5V_POWER 10 CLK 4 DATA1 1 DATA2 17 DDC CEC_GND 9 DATA0 8 DATA0_SHIELD 3 DATA2 16 SDA 7 DATA0 6 DATA1 15 SCL JK301 YKF45 7058V 14 NC 13 CEC 5 DATA1_SHIELD 20 SHIELD 12 CLK 11 CLK_SHIELD 2 DATA2_SHIELD 19 HPD 18 5V_POWER 10 CLK 4 DATA1 1 ...

Page 21: ... R402 0 READY C403 470pF 50V NON_19_22INCH SUB_SCL LED_R P404 12507WR 03L 19_22INCH 1 KEY1 2 KEY2 3 GND 4 P403 FF10001 30 19_22INCH 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 5V_ 12V_LCD TXCE0 TXCE0 TXCE1 TXCE1 TXCE2 TXCE2 TXCE3 TXCE3 SMALL_NC2 SMALL_NC1 SMALL_OPC_OUT SMALL_NC3 SMALL_OPC_EN SMALL_NC4 R414 0 HD_normal R418 0 OPC_ENABLE R419 0 LVDS_SEL R415 0...

Page 22: ...507 82pF 50V READY C508 10uF 16V L500 120 ohm READY Q502 ISA1530AC1 E B C R502 4 7K R506 220 R507 220 C505 100uF 16V READY C506 100uF 16V READY R505 47 R504 47 C503 0 1uF 50V R500 0 R501 0 TU500 TAFJ Z001D PAL_TUNER 5 MOPLL_AS 11 VIDEO 2 NC_2 10 NC_4 4 RF_AGC 1 NC_1 9 SIF 8 NC_3 3 B 5V 7 SDA 6 SCL 12 GND 13 SHIELD TU500 1 TAFJ H001F 5 MOPLL_AS 11 VIDEO 2 NC_2 10 NC_4 4 RF_AGC 1 NC_1 9 SIF 8 NC_3 3...

Page 23: ...03 100 R658 12 R653 12 R621 12 R654 12 R628 4 7K R667 4 7K R671 3 3 R635 3 3 IC600 NTP 3100L 1 BST1A 2 VDR1A 3 RESET 4 AD 5 DVSS_1 6 VSS_IO 7 CLK_I 8 VDD_IO 9 DGND_PLL 10 AGND_PLL 11 LFM 12 AVDD_PLL 13 DVDD_PLL 14 TEST0 15 DVSS_2 16 DVDD 17 SDATA 18 WCK 19 BCK 20 SDA 21 SCL 22 MONITOR_0 23 MONITOR_1 24 MONITOR_2 25 FAULT 26 VDR2B 27 BST2B 28 PGND2B_1 29 PGND2B_2 30 OUT2B_1 31 OUT2B_2 32 PVDD2B_1 3...

Page 24: ...R2 63 AUOUTL1 64 AUOUTR1 65 AUL0 66 AUR0 67 AUL1 68 AUR1 69 AUL2 70 AUR2 71 AUL3 72 AUR3 73 AUCOM 74 AUL4 75 AUR4 76 GND_4 77 AUVRP 78 AUVAG 79 AVDD_AU 80 GND_5 81 VDDC_2 82 DDCA_CK 83 DDCA_DA 84 DDCDA_CK 85 DDCDA_DA 86 DDCDB_CK 87 DDCDB_DA 88 GPIO20 89 VDDP_1 90 VDDC_3 91 UART2_RX 92 UART2_TX 93 DDCDC_CK 94 RXCCKN 95 RXCCKP 96 DDCDC_DA 97 RXC0N 98 RXC0P 99 GND_6 100 RXC1N 101 RXC1P 102 AVDD_DM 10...

Page 25: ...F C906 0 01uF C907 0 01uF C908 0 01uF C909 0 01uF C910 0 01uF C911 0 01uF C912 0 01uF C913 0 01uF C914 0 01uF C915 0 01uF C916 0 01uF C917 0 01uF 1 8V_DDR R906 150 READY V_REF C918 0 1uF 50V C919 10uF 10V R907 1K R908 1K IC900 H5PS5162FFR S6C J2 VREF J8 CK H2 VSSQ2 B7 UDQS N8 A4 P8 A8 L1 NC4 L2 BA0 R8 NC3 K7 RAS F8 VSSQ3 F3 LDM P3 A9 M3 A1 N3 A5 K8 CK R3 NC5 L3 BA1 J7 VSSDL L7 CAS F2 VSSQ4 B3 UDM ...

Page 26: ... 3 5V_MULTI 0 R1021 BIG_NON_AUO 0 R1017 BIG_AUO IPS DISP_EN VAVS_ON 3 3V_MULTI_MST 0 R1035 BIG_LGD SHARP FHD R1029 100 EXCEPT_BIGCMO E DIM C1012 1uF 25V OPT R1030 100 BIG_CMO Q1002 2SC3052 E B C I DIM C1008 0 1uF 16V OPT R1047 10K 0 R1034 BIG_AUO PANEL_STATUS R1031 0 BIG_CMO R1046 3 3K R1032 0 19_22INCH R1040 4 7K READY P1001 SMAW200 12 19_22INCH 1 15V 2 15V 3 GND 4 GND 5 3 5V 6 3 5V 7 GND 8 OLP 9...

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