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LG 26LG3DDH-UA Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LA96D
MODEL : 26LG3DDH
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62195509 (1006-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
26LG3DDH-UA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 26LG3DDH-UA

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD TV SERVICE MANUAL CHASSIS : LA96D MODEL : 26LG3DDH 26LG3DDH-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62195509 (1006-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    CONTENTS ....................2 SAFETY PRECAUTIONS ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............8 EXPLODED VIEW .................. 13 SVC. SHEET ....................Copyright LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 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 Copyright LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    Temp : 0 ~ 40 deg Humidity : ~ 80 % Storage Environment Temp : -20 ~ 50 deg Humidity : 10 ~ 90 % Copyright LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 HDTV 720P 1920*1080 33.72 59.94 74.17 HDTV 1080I 190*1080 33.75 60.00 74.25 HDTV 1080I 1920*1080 67.5 60.00 148.50 HDTV 1080P Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8: Adjustment Instruction

    Configuration). Push the START button (4) after file saving, then it execute download. 3.2. Execution of download program (SAP Configuration) Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 5) Click “Auto” tab and set as below 6) click “Run”. 7) After downloading, check “OK” message. filexxx.bin (7) ..OK 4) Updating is staring. Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 5. 2HOUR OFF : ON 6. OAD 7. UART DOWNLOAD 8. FACTORY MODE : ON 9. DEBUG MODE : OFF 10. TVLINK-COMM.ADJUST Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 5. 2HOUR OFF : ON 6. OAD 7. UART DOWNLOAD 8. FACTORY MOD : ON 9. DEBUG MODE : OFF 10. TVLINK-COMM.ADJUST Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 - Internal pressure test = between power cord GND and AC input Live. 3) leakage current: 0.5mArms (but, 32LG3DCH as hospital TV limited by 0.1mArms.) Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 PStoPDF trial version. http://www.oakdoc.com SIDE_AV L1208 +5V_ST_PTC BG2012B080TF 008:D26 SIDEAV_CVBS_IN JK1202 R,G,B PC&DDC PPJ218-01 C1227 +3.3V 100pF [YL]O_SPRING R1254 [YL]CONTACT 009:AA29 SIDEAV_SW [YL]U_CAN C1219 100pF D1223 ENKMC2838-T112 [WH]C_LUG L1206 BG2012B080TF 008:R33 [WH]U_CAN SIDEAV_L_IN C1224 100pF D1213 [RD]O_SPRING 5.6V L1207 [RD]CONTACT BG2012B080TF 008:R33 IC1200...
  • Page 15 PStoPDF trial version. http://www.oakdoc.com EDID HDMI1 +3.3V_ST 5V_HDMI_1 R556 R513 Q504 2SC3052 008:D37 R552 +5V_GENERAL 5V_HDMI_1 C501 0 . 1 u F R510 0 0 8 : D 3 8 ; 0 0 2 : S 2 0 R511 0 0 8 : D 3 7 ; 0 0 2 : S 2 0 R509 R569 008:D39...
  • Page 16 PStoPDF trial version. http://www.oakdoc.com EXTERNAL SPEAKER OUT +1.8V_AMP & +24V_AMP +5V_GENERAL L300 CB3216PA501E C2143 C2144 10uF 0 . 1 u F IC300 TPA6011A4PWPRG4 PGND_1 ROUT+ IC601 SHIELD_PLATE 2SA1530A-T112-1R ROUT- SE/BTL R2235 Q1104 AZ1117H-1.8TRE1(EH13A) +1.8V_AMP BTL Type SUB_MUTE T_TERMINAL2 008:AB19;003:AC20 PVDD_1 HP/LINE B_TERMINAL2 R2231...
  • Page 17 PStoPDF trial version. http://www.oakdoc.com +3.5V_ST R2550 +5V_ST_PTC +5V_ST_PTC FROM LIPS & POWER B/D R1403 5V/5V_G/PANEL/1.26/3305 IC706 4.7K 74LVC1G32GW R1406 +12V RT1P141C-T112 L1402 RL_ON Q1409 L708 BG2012B121F 008:AR33 R2541 CB3216PA501E 5V_ST R1404 RELAY_PTC L715 +5V_ST_PTC R1402 5V_ST C749 4.7K CB3216PA501E 009:AF28 R2540 R1407 C1410...
  • Page 18 PStoPDF trial version. http://www.oakdoc.com LGDT3305 TUNER +5V_TU L1003 C1007 C1005 C1011 C1013 C1008 C2250 +3.3V_AVDD_PVSB 0 . 1 u F 0 . 1 u F 10uF 220uF 0 . 0 1 u F 220uF TU1001 TDVW-H104P 1N4148W +5V_TU R1074 D1000 NC_1 C1071 C1072...
  • Page 19 PStoPDF trial version. http://www.oakdoc.com DDR2 1.8V By CAP - Place these Caps near Memory +1.8V_DDR +1.8V_S_DDR BLM18PG121SN1D 0 . 1 u F 0 . 1 u F +1.8V_S_DDR +1.8V_S_DDR +1.8V_S_DDR 1G_HYNIX 512M_HYNIX IC100 0 . 1 u F 1000pF HY5PS1G1631CFP-S6 LGE3369A (SATURN6 NON RM) H5PS5162FFR-S6C VREF...
  • Page 20 PStoPDF trial version. http://www.oakdoc.com LVDS P800 FI-X30SSL-HF R858 PWM_DIM 008:AF11;004:R21 R857 OPC_OUT 004:R20 LVDS_TXA3+ R847 TXA1-[9] LVDS_TXA3+ LVDS_TXA3- R848 TXA1+[8] LVDS_TXA3- LVDS_TXAC+ R849 TXA2-[7] LVDS_TXAC+ LVDS_TXAC- R850 TXA2+[6] LVDS_TXAC- LVDS_TXA2+ R851 TXAC-[5] LVDS_TXA2+ LVDS_TXA2- R852 TXAC+[4] LVDS_TXA2- LVDS_TXA1+ R853 TXA3-[3] LVDS_TXA1+ LVDS_TXA1- TXA3+[2]...
  • Page 21 +3.3V +3.3V_VDDP PStoPDF trial version. http://www.oakdoc.com L101 BLM18PG121SN1D +1.26V_VDDC C164 C167 C170 C173 C176 C179 C184 C189 C195 C196 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 . 1 u F 0 .
  • Page 22 PStoPDF trial version. http://www.oakdoc.com UPDATE SW900 SKHMPWE010 R2324 R2335 Pillow_POWER_MANAGE 5VST UART_SWA 009:V24;014:R12 012:AA5 R2332 R2325 R2291 012:O6 R2333 2.2K UART_SWB R2300 4.7K 5VST SAM2333 A1[GN] R2323 5VST LD904 A2[RD] SAM2333 R2342 A1[GN] LD903 R2322 R2338 A2[RD] R2343 011:N19 R2301 LED_AM IC1203 011:N19...
  • Page 23 PStoPDF trial version. http://www.oakdoc.com FPGA 3 . 3 V _ P r o i d i o m +VCCINT_1.5V FPGA POWER +VCCINT_1.5V +3.3V 3 . 3 V _ P r o i d i o m MLB-201209-0120P-N2 MLB-201209-0120P-N2 L1231 L1227 L1230 0 1 0 : T 2 5 ;...
  • Page 24 PStoPDF trial version. http://www.oakdoc.com IR & LED & CONTROL P1100 12505WS-15A00 +5V_ST_PTC UPPER SMT R1119 L1103 R1115 BG2012B080TF KEY_CTL_0 009:AO30 KEY0 L1104 R1116 BG2012B080TF KEY_CTL_1 R1118 KEY1 009:AO29 +5V_ST_PTC L1102 CB3216PA501E ZD1110 C1108 C1106 5 . 6 B ZD1112 0 . 1 u F 1000pF 5 .
  • Page 25 PStoPDF trial version. http://www.oakdoc.com UART R925 +5V_ST_PTC +5V_ST_PTC Q903 2SC3875S(ALY) S e r i a l P o r t R923 Q902 2SC3875S(ALY) R917 012:C9 PTC_TX_1 +5V_ST_PTC +5V_ST_PTC Q904 +5V_ST_PTC 2SC3875S(ALY) +5V_ST_PTC R924 +3.3V_ST IC902 Q901 ST3232CDR 2SC3875S(ALY) P900 C907 KCN-DS-1-0088 R912 0 0 9 : A Q 2 6 ;...
  • Page 26 PStoPDF trial version. http://www.oakdoc.com USB JACK (DOWN LOAD ONLYU) +3.3V +5V_EXT IC1304 MIC2009YM6-TR VOUT ILIMIT C2248 C2251 C2252 USB_CTL FAULT/ ENABLE 10uF 47uF 47uF R2514 USB_OCD 008:AQ34 USB_DM 008:AQ34 USB_DP ADMC5M03200L ADMC5M03200L U S B + 5 V O v e r C u r r e n t P r o t e c t i o n - - > U S B J a c k THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
  • Page 27 PStoPDF trial version. http://www.oakdoc.com PILLOW_OUT +12V JK1500 T1501 12VD AT2812A R1528 PILLOW_OUT 2 . 2 ON/OFF PILLOW_OUT CH_UP CH_DN C1509 C1503 AUDIO 0 . 1 u F 0 . 0 2 2 u F 5VST UPS_Power L2704 +5V_GENERAL DA-8580 C2712 C2714 L2703 EAP38319001...
  • Page 29 P1408 18pin : Low or Module P1408 20pin : high ↓ OK → Check Mstar LVDS output Replace Mstar(IC100) R847,R848….R856 or Main board Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 30 Check CVBS signal. → Bad Tuner. Replace Tuner. TU1001 #19 Pin ↓ OK → Replace Mstar(IC100) Check Mstar LVDS output or Main board Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 31 Check other set. R/G/B/H/V-Sync If no problem, check signal line. C113,C108,C114,R146,R149 ↓ OK → Replace Mstar(IC100) Check Mstar LVDS output or Main board Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 32 Replace Main board If no problem, check signal line. ↓ OK → Replace Mstar(IC100) Check Mstar LVDS output or Main board Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 33 Replace connector Check Connector & P600 if found to be damaged. ↓ OK → Check speaker resistance Replace speaker. and connector damage. Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 34 Replace connector Check Connector & P600 if found to be damaged. ↓ OK → Check speaker resistance Replace speaker. and connector damage. Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 11. Pillow Speaker Audio Check Switch SW1500 Location(Pillow Speaker) ↓ OK → Replace Connector if found to be Check Connection & JK1500 damaged Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 36 IO Expander SDA_3.3V CVBS, L/R Side AV JACK PACK JACK PACK CLK,TDI,TDO,MS,RST at SIDE at SIDE JTAG Audio L/R H/P Amp. Headphone(opt) Copyright ⓒ 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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