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LG 50PA6500 Service Manual
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LG 50PA6500 Service Manual

LG 50PA6500 Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : PD23A
MODEL : 50PA6500
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67564705 (1205-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
50PA6520
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
50PA6500-ZG
50PA6520-ZM
Printed in Korea

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Summary of Contents for LG 50PA6500

  • Page 1 North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com PLASMA TV SERVICE MANUAL CHASSIS : PD23A MODEL : 50PA6500 50PA6500-ZG MODEL : 50PA6520 50PA6520-ZM CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67564705 (1205-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    SPECIFICATION ..................4 ADJUSTMENT INSTRUCTION ..............6 BLOCK DIAGRAM .................. 13 EXPLODED VIEW .................. 14 SCHEMATIC CIRCUIT DIAGRAM .............. - 2 - Copyright © LG Electronics. Inc. All rights reserved. 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. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specification

    Humidity : 10 % ~ 90 % Input Voltage AC100 V~ 240 V, 50 / 60 Hz Maker LG - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 SPDIF Out (1 EA) SPDIF Out USB (1EA) for SVC, S/W Download, DivX only DVB-T2 models PCMCI (1EA) DVB-T/C Decryption Interface, CI+ - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: Adjustment Instruction

    -> If you push “Power on” key, TV set will recover channel information by itself. 3) After function inspection, Push “In-stop” key. - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 ■ Enter Service Mode by pushing “ADJ” key, ■ Enter Internal ADC mode by pushing “►” key at “5. ADC Calibration” - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 ■ When the adjustment is completed, Enter “COPY ALL”. ■ Exit adjustment mode using EXIT key on R/C. - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 NG is displayed. Manufacturer ID 1E6D (5) If Download is failure, Re-try downloads. Version Digital : 1 Revision Digital : 3 - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 (Sensor DATA 0 ~ 4095, Power Saving Mode 0 ~ 12) * IF you press IN-STAP Button, change Green Eye-check OSD. - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0, Phase Data write : Model Name and Serial Number write in EEP- ROM,. - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 (6) When TV turn on, check the Updated version on Diagnos- i 01 OK 1d1852d21c1ed5dcx tics MENU. CMD1 CMD2 Data 0 └──> CI+ Key Value - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Block Diagram

    BLOCK DIAGRAM - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 14: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 14 - Only for training and service purposes...
  • Page 15 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART,CI Slot Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. JACK INTERFACE Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Tuner block THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 2011-10-20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 2011-10-20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Memory.LVDS,IR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 2011-04-01 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Power,AMP Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 2011/06/03 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR DDR_256 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 3. GP2R. (Block, Power, I2C) 4. LM1. (Block, Power, I2C) 5. LM1 SOC Power sequence. 6. Memory test. 7. Pen touch overview. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 ※ LM1 use internal EDID&HDCP. (LM1 is Removing the EEPROM for EDID&HDCP) LM1 is optimizing Power block. (LM1 is reducing DC/DC, LDO, power application) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 Stand by 3.5V . 12V_secondary Not use 12V. IR Wafer LM1 not support 3D. SIDE USB. Memory DDR3 DDR3 DDR3 1Gbit . 2ea Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 17.03 1.09A 1.420 +5V_TU 4.75~5.25 4.99 None 0.170 4.845~5.355 5.03 2.600 +3.3V_TU 3.15~3.46 3.26 None 0.320 +1.2V_TU 1.20~1.32 1.27 None 0.300 Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 5V_TU TPA54319 C634 C635 C636 C641 C642 C304 C307 0.1u 4.7u 4.7u 0.01u IC303 Audio AMP C341 C344 C340 STA338BWG13TR 0.1u Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 IC303 Audio AMP C332 0.1u +3.3V_TU L300 +3.3V_TU C302 0.1u +1.2V_TU IC301 C309 +1.2V_TU C313 C325 C322 C300 AZ1117H 0.1u 0.1u 0.1u Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 3-3. LDO/DC-DC Start up ■ IC600 (+3.3V_AVDD/AZ1085S) ■ IC602 (+1.5V_DDR_IN/TPS54319) Vout ■ IC604(+2.5V_AVDD/TJ3964S) ■ IC603 (+1.26V_VDDC/TPS54319) Vout Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 3-4. LDO/DC-DC Start up ■ IC606 (+3.3V/AZ1085S) Vout ■ IC605 (+5V_TU/TPS54231) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 0x1C 0x74 0x1C (B5) <RGB_DDC_SCL> <DDC_SCL/UART_RX> +5.0 <DDC_SDA/UART_TX> (A5) <RGB_DDC_SDA> 10K (R237,R247) V_ST DDCA_CK/UART0_RX DDCA_DA/UART0_TX EEPROM EEPROM RGB 0xA0 RGB 0xA0 Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 3.3V ST 3.5V AP2121 DC/DC : 4 DC/DC : 2 GP2R Power Block LM1 Power Block LDO : 7 LDO : 4 Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 Spec) 165mV↓ 1005 0.1uF 3216 8.5mVrms Audio →1608 186.6mVpp change C711 C712 1608 10uF 0.1uF C638 C646 3216 1608 0.1uF 1608 Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 →6.3V Spec) 165mV↓ 1005 C552 2012 8.5mVrms C684 C685 →1608 0.1uF 45mVpp 0.1uF 10uF 0.00636↓ 6.3V 1005 change 1005 1608 NOT_HNIM Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 L100 135.4mVpp 120 Ohm MOFET PCMCI Switch C104 C100 C101 1608 0.1uF 22uF 0.1uF →16V 1005 1005 3216 →3225 0.017↓ change Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 Spec) 55mV↓ L500 19.69mVrms 500 Ohm 120.8mVpp DDR1/2 C544 C545 10uF 0.1uF 1000pF 0.1uF →6.3V 1005 1005 1005 2012 →1608 change Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 2012 →3216 0.0005↓ L406 change 120 Ohm C469 1608 0.1uF 1005 Serial Flash C556 0.1uF 1005 SUB Ass’y C547 0.1uF 1005 Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 I2S_IN_SD/GPIO151 SUB_SCL P501 I2S_IN_BCK/GPIO150 SUB_SDA KEY/IR PIN8 +3.3V_AVDD R468 2.2K R469 2.2K I2C_SCKM2/DDCR_CK/GPIO72 I2C_SCL IC503 EEPROM I2C_SDAM2/DDCR_DA/GPIO71 I2C_SDA IC502 HDCP (OTP) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 [Spec] before all pwr input raise SOC_RESET +3.3V_AVDD +1.10V_VDDC Multi_PWR +1.5V_DDR_IN SOC_RESET Threshold +3.3V_AVDD +1.10V_VDDC +1.5V_DDR_IN ◈ SOC_RESET timing and Power sequence are ok. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 ◈ Solution █ Value of Capacitor and resister. ① Cap 22uF. 0CK226DC67A 22uF 6.3V $0.0117 ② Resister 100㏀. +3.3V_AVDD Threshold SOC_RESET Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 6. Memory margin test. (DDR) STEP1. Setting like below. (Red box) STEP2. Call “direct MIU Auto BIST” function from Menu. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 STEP4. below picture is test result. Red box is timing margin. ※Normal operating board has timing margin 7~9. If timing margin under 7 ,it’s some problem DDR or Main MIU. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only...
  • Page 43 7. Pen touch overview. (Installation_Pentouch Program.) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 7. Pen touch overview. (Installation_Pentouch Program.) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 7-1. Pen touch overview. (Check the installation status.) Currently installed programs Check USB Dongle Driver in Device Manager Check the LG Pentouch Multi-touch Driver or Pentouch TV -LG Pentouch Multi-touch Driver(MultiTouch) -LG Pentouch Multi-touch Driver(BUS) -LG Pentouch Multi-touch Driver(Dongle) the Dongle Driver should be displayed when connected USB Dongle Copyright ©...
  • Page 46 7-2. Pen touch overview. (Pairing between Touch Pen and Dongle) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 7-3. Pen touch overview. (Pairing between Touch Pen and Dongle) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 ① The text "Pentouch" should be displayed to indicate that the Pentouch mode is activated. If not, restart the Pentouch mode. ② "1365x768 " should be displayed to indicate that the resolution has been set successfully. If not, set the monitor resolution again.(See p.38) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only...
  • Page 49 - It can be using internet for web surfing , Flash Game etc. The HDMI or RGB signal is PC’s output that configuration set by clone mode. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only...

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