LG 32LG30R Service Manual
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LG 32LG30R Service Manual

Lg 32lg30r lcd tv service manual
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See also: Owner's Manual
LCD TV

SERVICE MANUAL

CHASSIS : LP81A
MODEL : 32LG30R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only
website:http://biz.LGservice.com
32LG30R-MA

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Summary of Contents for LG 32LG30R

  • Page 1: Service Manual

    Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LP81A MODEL : 32LG30R 32LG30R-MA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    BLOCK DIAGRAM...................19 EXPLODED VIEW .................. 20 EXPLODED VIEW PARTS LIST ..............21 REPLACEMENT PARTS LIST ............... 22 SVC. SHEET ....................Copyright © 2008 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 © 2008 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    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 © 2008 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2008 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    0.17025 x 0.51075 Back Light 32” 12 EEFL Display Colors Coating 3H, AG/ 2H, AG LPL, CMO, AUO / Sharp Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 HDTV 1080I 1920*1080 56.25 148.5 HDTV 1080P 1920*1080 67.432 59.94 148.350 HDTV 1080P 1920*1080 67.5 60.00 148.5 HDTV 1080P Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 148.350 HDTV 1080P 1920*1080 67.5 60.00 148.5 HDTV 1080P 1920*1080 74.25 HDTV 1080P 1920*1080 33.75 74.25 HDTV 1080P Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...

  • Page 9: Adjustment Instruction

    ( 2 ) f i l ex x x .bi n (4) ..OK Double click Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 * Refer to Job Expression of each main chassis ass’y 0x02 instruction. (EBTxxxxxxxx) for Option value * Never push the IN-STOP KEY after completing the function inspection. Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 (For Automatic Adjustment) The data is same without Physical address -> Physical address(F) : HDMI 1 -> 10, HDMI 2 -> 20 Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 - In case of decreasing the x, decreasing the R : fix G - In case of decreasing the y, decreasing the G : fix R Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only...
  • Page 13 3-Page 0~7F Read 3-Page 80~FF Read * Purpose : To read(84h) the appointment Address of E2PROM by 128(80h)-byte Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Troubleshooting

    After all cables connect is removed to PSU, the AC voltage marking is authorized on manual. When ST-BY 5V is not operated. replace PSU. Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only...
  • Page 15 Check the power. Check the Tuner. Block A Is the LVDS Cable inserts well. Cable connected? well Change the IC(IC801) Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 Is video input of Check the input source. the S-Video Jack normal? (Check R8041/42) Same as Block A. Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 9. Unusual display from RGB model Is video input of the Com2 Check the input source. Jack normal? (Check R8035/37/39) Change IC801. Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...

  • Page 18: No Sound

    Check the Tuner In/Out. Only RF is no sound. Is IC601 operated Replace IC601 normality? Replace Main B/D. Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...

  • Page 19: Block Diagram

    BLOCK DIAGRAM Copyright © 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...

  • Page 20: Exploded View

    EXPLODED VIEW Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...

  • Page 21: Exploded View Parts List

    EAX40043808 MSTAR LP81A RS-232C COMPONENT1 JK101 COMPONENT2 JK100 *ONLY LG30 PPJ209-02 PPJ209-02 JK103 R148 R134 KCN-DS-1-0088 R146 R138 COMP2_R COMP1_R C115 C113 R119 R106 D115 R135 +5V_ST 1000pF R139 1000pF READY 5.6V 220K READY 220K RS232C IC101 MAX3232CDR C110 C109 0.1uF R140 R149...

  • Page 22: Replacement Parts List

    EAX40043808 MSTAR LP81A 4F [YL]CONTACT2 3F [YL]O_SPRING2 R210 CVBS_VIN D201 R208 C207 2F [YL]1P_CAN2 3E [WH]0_SPRING2 R222 CVBS_LIN R218 R209 C211 220K 100pF R219 2E [WH]1P_CAN2 READY 4D [RD]CONTACT2 3D [RD]O_SPRING2 R223 CVBS_RIN R220 R212 C212 220K R221 100pF 2D [RD]1P_CAN2 READY 4C [YL]CONTACT1 3C [YL]O_SPRING1...
  • Page 23 EAX40043808 +5V_ST HPD_S/W_3 MSTAR LP81A +5V_HDMI_3 +5V_ST OPTION +5V_HDMI_3 HPD_S/W_2 SIDE_HDMI R344 SW_HPD : USE SW HPD (Default) +5V_HDMI_2 SIDE_HDMI Q307 IC303 R335 2SC3875S 2SC3875S AT24C02BN-10SU-1.8 +5V_HDMI_2 HPD_MST_3 MST_HPD : USE MST HPD RT1C3904-T112 Q300 HPD_MST_2 R319 RT1C3904-T112 SIDE_HDMI IC301 R301 AT24C02BN-10SU-1.8 R349...
  • Page 24 EAX40043808 HD_ATN MSTAR LP81A P403-*1 TXCE0+,TXCE0-,TXCE1+,TXCE1-,TXCE2+,TXCE2-,TXCE3+,TXCE3-,TXCE4+,TXCE4-,TXCLKE+,TXCLKE- TXCE0+,TXCE0-,TXCE1+,TXCE1-,TXCE2+,TXCE2-,TXCE3+,TXCE3-,TXCLKE+,TXCLKE- SMAW200-24C HD_NORMAL P402 P403 SMAW200-40C SMW200-26C PANEL WAFER VCC_LCD VCC_LCD R438 R408 R428 R428 FHD 8BIT:NC FHD 8BIT:NC TXCE0+ TXCE0- R407 R424 TXCE0- TXCE0+ TXCE1+ TXCE1- TXCE1+ TXCE1- 3 2 s h a r p 4.7K TXCE2+ TXCE2-...
  • Page 25 EAX40043808 MSTAR LP81A TU500 NON EU TUNER TAFT-Z703D NTSC TUNER TU500-*1 TAFT-H703F NC_1 GND_1 1 NC_1 +B[5V] NC_2 2 GND_1 N e a r t h e p i n RF_AGC R514 +5V_TUNER TP[33V_OPTION] 3 +B[5V] NC_3 C503 C521 0.01uF GND_2 10uF 4 NC_2...
  • Page 26 EAX40043808 MSTAR LP81A +16V_NTP +16V_NTP +16V_NTP P601 +1.8V SMAW250-04 L614 C666 R604 C612 L611 120OHM C620 C615 C617 330uF 35V UBW2012-121F 3 . 3 330uF BG2012B121F 1000pF 0.1uF 0.1uF EAM38769506 +1.8V_AVDD SPK_L+ SPK_R- EAM38769505 C613 C639 0.01uF R607 R609 0.01uF L603 L615 SPK_R+...
  • Page 27 EAX40043808 MSTAR LP81A IC703_USB +3.3V_USB +1.8V L711 IC703 L713 +3.3VDDP +3.3VDDP 120OHM MX25L1605AM2C-15G +3.3VDDA +1.8VDDC 120OHM C714 UBW2012-121F +3.3VDDP C711 READY R729 SFCS C713 UBW2012-121F 22uF C754 0 . 1 u F 47uF 10nF C717 READY 0 . 1 u F C726 C727 C728...
  • Page 28 < M o d e S e l e c t i o n > MX25L1605AM2C-15G H/W OPTION #3 +3.3V_MST EAX40043808 R8171 +3.3V_MST #8. MSTAR +3.3V_MST SPI_CZ R8187 IC803 +3.3V_MST MSTAR LP81A R8001 +3.3V_MST R8173 R8172 FLASH_WP_ZORAN SPI_DO HOLD# 4.7K READY READY 120HZ: H...
  • Page 29 EAX40043807 MSTAR LP81A #9.DDR MDATA[0-15] MDATA[0-15] +2.5V_VDDM_MST IC900 HYB25DC256163CE-4 AR902 AR901 C902 0 . 1 u F VDD_1 VSS_3 1/16W 1/16W MDATA[8] DQ15 MDATA[7] MDATA[9] VDDQ_1 VSSQ_5 MDATA[6] MDATA[10] DQ14 MDATA[5] MDATA[11] DQ13 MDATA[4] VSSQ_1 VDDQ_5 C903 0 . 1 u F C908 DQ12 0 .
  • Page 30 EAX40043807 MSTAR LP81A L1000 UBW2012-121F +1.8V +1.8V_AVD C1010 120OHM 47uF16V MAX 1A X1000 27MHz R1005 +1.8V_AVD +3.3V C1000 0.1uF AR1000 DEC_656[0-7] VDDE_1 VD[7] SCLK VD[8] SCL_Part R1003 DEC_656[0] +3.3V SDAT VD[9] R1002 DEC_656[1] SDA_Part VD[10] DEC_656[2] READY R1001 IC1000 4.7K RSTB SW_RESET R1004...
  • Page 31 EAX40043807 MSTAR LP81A LED Block +5V_ST P_16V P_16V *PANEL OPTION R1189 R1190 1.2K R1197 R1122 C1114 R1127 R1183 R1155 R1103 R1185 R1186 R1187 R1104 S h a r p 5 2 " P_12V P_12V AC_DET CMO 32/42/47 4.7K 0.47uF CMO 57" 4.7K 0.47uF +5V_ST...
  • Page 32 Feb., 2008 P/NO : MFL41394429 Printed in Korea...

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