LG 42PN4500-SA Service Manual
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LG 42PN4500-SA Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : PB31A
MODEL : 42PN4500
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67648804 (1301-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42PN4500-SA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com PLASMA TV SERVICE MANUAL CHASSIS : PB31A MODEL : 42PN4500 42PN4500-SA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67648804 (1301-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    SPECIFICATION ..................4 ADJUSTMENT INSTRUCTION ..............5 BLOCK DIAGRAM .................. 12 EXPLODED VIEW .................. 13 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

    2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 5: Adjustment Instruction

    ● ad 00 10: Adjust 1080p RGB ■ Make sure RS-232C control ● xb 00 90: Endo of Adjustmennt ■ Selection Factory output option - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 ● RGB 1080p adjustment in RGB input mode ● If you success RGB 1080p Adjust. You can see “ADC RGB-DTV Success” - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 ■ It only needs to PCM EDID D/L for North America Product. ■ EDID data (Model name = LG TV) - MODEL NAME : 42/50PN4### - HD_HDMI 1 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01...
  • Page 8 R Cut ● Connect RS-232C cable to set ● Connect HDMI cable to set G Cut B Cut - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 ● When tester will measure on medium condition, adjust 0 on TV display menu. ● When tester will measure on warm condition, adjust W30 on TV display menu. - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 (3) After turning VR502,voltage of D.M.M adjustment as same as Va voltage which on label of panel left/top (deviation; ±0.5V) - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 5392 Tool option 3 3313 Tool option 4 50310 Tool option 5 2058 Country Group Code Country Group Country - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 12: Block Diagram

    BLOCK DIAGRAM - 12 - Copyright © LG Electronics. Inc. All rights reserved. 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. - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART,CI Slot Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only 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. JACK INTERFACE Copyright © 2013 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 Tuner block THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 2012-06-201 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 2012-06-01 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Memory.LVDS,IR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 2012-06-01 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Power,AMP Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 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 © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 1. L13 Concept(’12 Vs. ’13) 2. L13 Power On/Off sequence 3. L13 Power Block 4. L13 I2C MAP 5. L13 Front End Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 1) RGB ,RS-232C and PC-Audio is removed Tuner 2) Comp./Comp. Hybrid Comp. Hybrid (1ea) LVDS Wafer 3) HDMI 1 Jack is removed HDMI Block Tact Key+LED+EYE+IR Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 40ms M_On 80ms 700ms VS_On 250ms 260ms VS_DET Signal Spec.(min) Measure Graph Remark VS_On 40ms RL_On 200ms 335ms M_On 30ms 56ms Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 Graph Remark RL_On M_On 80ms 87ms VS_On 250ms 280ms VS_DET Signal Spec.(min) Measure Graph Remark M_On 2500ms 3000ms RL_On 30ms 56ms Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 2. Screen On/Off sequence Signal Spec.(min) Measure Graph Remark VS_On 250ms 247ms VS_DET 400ms Signal Spec.(min) Measure Graph Remark M_On 2530ms 2600ms Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 Spec) 850mV↓ 12mVrms 116mVpp L616 L616 Audio 17.07V 120 Ohm C680 C686 C681 C690 C695 0.1uF 0.1uF 68uF 2012 1608 1608 8PI/6.3H Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 10uF 10uF 0.1uF 0.1uF 0.1uF 0.1uF Input Input Comp HDMI 2012 1005 1005 Comp HDMI 910mA 900mA 850mA 750mA 630mA 650mA Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 5V to 1.25V Tuner AP1117EG-13 C614 C625 C315 C314 (850mW) 10uF 10uF 0.1uF 10uF 6.3V 6.3V 1608 1608 1005 1005 1608 1608 Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 74mVpp 1.50V 120 Ohm C432 C436 C446 1608 0.1uF 10uF 0.1uF 1005 2012 1005 1005 Input Comp HDMI Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only 145mA 105mA 105mA Only for training and service purposes...
  • Page 31 400mA(?) 1500mW LDO(T2) 1.25V(400mA) 850mW 3.3V 300mA 510mW 850mW 3.3V(300mA) 3.3V 300mA 510mW 850mW 1.5V(300mA) 3.3V 3.3V 1.5V 300mA 480mW 850mW Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 R453 2.2K R452 2.2K AA21 I2C_SCL I2C_SCKM2/DDCR_CK/GPIO72 AB21 AB21 I2C SDA I2C_SDA IC503 EEPROM (0xA0) IC503 EEPROM (0xA0) I2C SDAM2/DDCR DA/GPIO71 I2C_SDAM2/DDCR_DA/GPIO71 Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 Si2176 : With Analog Demod (Half NIM) SI2169 : ISDB-T Demod SI2169 : ISDB T Demod SIF/IF 2012 Tuner Block Diagram Tuner TDSS-H001F Tuner TDSN-B001F Tuner TDSH-T1001F Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 Digital DemodS : NO_DEMOD_S dS NO DEMOD S Analog Demod : SI2178 ISDB-T ATSC Tuner Area Brazil/Chile/Peru DVB-T Tuner Area Ecuador/COSTARICA ISDB-T Tuner Area Copyright © 2013 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

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