LG 32LG710H Service Manual

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Owner's manual (207 pages)

Specifications (4 pages)

Setup manual (48 pages)

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SERVICE MANUAL

CHASSIS : LA95A

MODEL : 32LG710H

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL62439602 (0912-REV00)

North/Latin America

Europe/Africa

Asia/Oceania

32LG710H-UA

Internal Use Only

http://aic.lgservice.com

http://eic.lgservice.com

http://biz.lgservice.com

Printed in Korea

Table of Contents

Summary of Contents for LG 32LG710H

Page 1: Service Manual
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 : LA95A MODEL : 32LG710H 32LG710H-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62439602 (0912-REV00) Printed in Korea...
Page 2: Table Of Contents
CONTENTS ....................2 SAFETY PRECAUTIONS ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 EXPLODED VIEW .................. 14 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: 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 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 1280*720 45.00 60.00 HDTV 720P 1280*720 44.96 59.94 HDTV 720P 1920*1080 33.75 60.00 HDTV 1080I 1920*1080 33.72 59.94 HDTV 1080I Copyright LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 HDTV 1080P 1920*1080 26.97 23.94 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9: Adjustment Instruction
- xb 00 60 [Change input source to RGB(1024*768)] - ISP Download(Option) - ad 00 10 [Adjust 1024*768 RGB] - ad 00 90 End adj. Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 6) If ADC calibration is failure, after recheck ADC pattern or condition retry calibration. Error message refer to (v) Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11: White Balance Adjustment
- EDID Block 0 table = *(wb 00 20(start), wb 00 2f(end)) -> Off-set adj. wb 00 ff -> End white balance auto adj. Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12 Adj. menu 6.White Balance, you can select one of 2 Test-pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can adjust using RF signal in 216 Gray pattern. Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13 1) Push "IN-START" key in service remote controller. 2) Select "Tool Option 1" and Push “OK” button. 3) Punch in the number. (Each model has their number.) Copyright LG Electronics. Inc. All right reserved. - 13 - 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 right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 33 Serial TP MNT OUT PROiDIOM MCLK AUDIO ADC TUNER CVBS Digital Input UART0 RS-232 HD_DVI(24b) UART[0-2] UART1 (LGDT3305) TUNER IF_N/P (TDVW- H104P) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 34 MC33078_R_OUT Audio_AMP_MUTE CS5340_I2S_LRCLK_OUT BCM3553_SPDIF_OUT TMDS_RXC_BCM HDMI BCM_L_OUT1 BCM_R_OUT1 BCM_L_OUT BCM_R_OUT TPA6011 SPEAK_OUT_L- MNT_L_OUT BCM_L_OUT2 SPEAK_OUT_L+ MNT_R_OUT BCM_R_OUT2 MUTE2 MUTE2 Audio_MNT_MUTE Audio_MNT_MUTE Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 41 IC1500 4.7K SGPIO6 : K3 SCL3_3.3V SGPIO7 : K2 SDA3_3.3V 22Ω M24512 NVRAM IC900 4.7K 22Ω EEPROM EDID GPIO_IIC_SCL IC1700 GPIO_IIC_SDA Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 42 Communication PTC_RX_BCM_5V R1OUT R1IN PTC_TX_BCM GPIO31-P25 PTC_RX_BCM_3.3V GPIO30-P26 UART_SWA Debugging BCM Debuging BCM_TX GPIO16-P24 BCM_RX PTC Download / Debugging GPIO15-P23 Monitoring Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 43 Check IC502 IIC communication Check IIC line or replace IC501 state Check IR input state of IC501 Check IR board 23pin Re-download PTC Micom Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 44 Check Q401 application circuit Check Q401 output or replace Q401 Voltage(12V) Replace Cable Check LVDS Cable Check LCD Module Control board Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 45 After checking thoroughly all path once again, You should decide to replace BCM3549 or not. Can you see the normal waveform? Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 46 Check LGDT3305 Output Maybe LGDT3305(IC1001) has Clock(R141), Data(R142) problems , Sync(R140) Check X100 Replace X1200 and application circuit Replace IC101 Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 47 After checking thoroughly all path once again, You should decide to replace BCM3549 or Measure waveform at C1109 because it’s more easy to check. not. Can you see the normal waveform? Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 48 After checking thoroughly all path once again, You should decide to replace BCM3549 or not. because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 49 After checking thoroughly all path once again, You should decide to replace BCM3549 or not. because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 50 Can you see the normal waveform? After checking the Power of this chip, you should decide to replace this or not. Check HDCP communication lines(IC100) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 51 After checking audio signal line, you should decide to replace item or not. Measure waveform at C636 because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 52 After checking audio signal line, you should decide to replace item or not. C1004,C1005,C1006,C1007,C1008,C1009,C1010,C1011 because it’s more easy to check. Can you see the normal waveform? Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 53 Can you see the normal waveform? After checking the Power of this chip, you should decide to replace this or not. Check HDCP communication lines(IC100) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 54 After checking audio signal line, you should decide to replace item or not. Can you see the normal waveform? Check the connector & Speaker Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Page 55 After checking audio signal line, you should decide to replace item or not. Can you see the normal waveform? After checking the Jack, you should decide to replace item or not. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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LG 32LG710H Service Manual

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