LG 32LV3000 Service Manual

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LED LCD TV

SERVICE MANUAL

CHASSIS : LB01V

MODEL : 32LV3000

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL62865338 (1105-REV00)

North/Latin America

Europe/Africa

Asia/Oceania

32LV3000-TA

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 32LV3000

Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LB01V MODEL : 32LV3000 32LV3000-TA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62865338 (1105-REV00) Printed in Korea...
Page 2 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ............... 9 BLOCK DIAGRAM ................. 14 EXPLODED VIEW .................. 15 SCHEMATIC CIRCUIT DIAGRAM .............. Copyright © 2011 LG Electronics. Inc. All rights reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
Page 3 An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2011 LG Electronics. Inc. All rights reserved. - 3 - 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 © 2011 LG Electronics. Inc. All rights reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 6 Support HDCP Audio Input RGB/DVI Audio Component SDPIF out SPDIF out For My Media(Movie/Photo/Music List) or For SVC Copyright © 2011 LG Electronics. Inc. All rights reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7 47.72 59.8 84.75 WXGA 1280*1024 63.981 60.02 108.875 SXGA FHD Model 1920*1080 66.587 59.93 138.5 WUXGA FHD model Copyright © 2011 LG Electronics. Inc. All rights reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 59.8 84.75 WXGA HDCP 1280*1024 63.981 60.02 108.875 SXGA HDCP/FHD model 1920*1080 67.5 60.00 138.625 WUXGA HDCP/FHD model Copyright © 2011 LG Electronics. Inc. All rights reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9 3) Click “Read” tab, and then load download file(XXXX.bin) by clicking “Read”. fi lexxx.bin Copyright © 2011 LG Electronics. Inc. All rights reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 Module Tool option1 Tool option2 Tool option3(AU,TS) Tool option4 Tool option5 18432 18954 53545(-) 26904 4) Completed selecting Tool option. Copyright © 2011 LG Electronics. Inc. All rights reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11 * For Service main Assembly, EDID have to be downloaded to check the back light on. Insert Process in advance. Copyright © 2011 LG Electronics. Inc. All rights reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12 (dc) for one second. Item Condition Data(Hex) Manufacturer ID 1E6D Version Digital : 1 Revision Digital : 3 Copyright © 2011 LG Electronics. Inc. All rights reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13 2) Go to the menu ‘6.Model Number D/L’ like below photo. 3) Input the Factory model name(ex 32LV2510-TB) or Serial number like photo. Copyright © 2011 LG Electronics. Inc. All rights reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 15 X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All rights reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 16 Ver. 0.1 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. FLASH/EEPROM/GPIO Copyright © 2011 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 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN2, HW OPT Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 18 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Rev.4 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 19 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. USB_OCP_DIODE Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 20 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 21 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. RGB/SPDIF/HP Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 22 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. RS232C_9PIN Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS_LARGE Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 24 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR DDR_256 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 25 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SFLASH_1MB Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 26 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. WOOFER_NTP Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. AMP_NTP Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 28 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. REAR_JACK Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SMD_GAS THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 30 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR IR/CONT_SMALL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR TUNER_SMALL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 32 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON_L/DIM THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 33 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 34 Ver. 1.0 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON_Option THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 35 20101023 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR POWER_SMALL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 37 LCD TV Repair Guide III `11 years New Models ( GP2R MSTAR) Trouble Shooting Guide Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 38 D. Function error External device recognition error E. Noise Circuit noise, mechanical noise F. Exterior error Exterior defect Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 39 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 40 Power Normal No Video/ replace Board voltage? No audio MAIN B/D ( 3.5V,12V,20V or 24V…) Replace Power Board and repair parts Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 41 Tuner soldering S/W Upgrade Normal Contact with signal distributor Picture? or broadcaster (Cable or Air) Normal Replace Picture? Main B/D Close Close Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 42 Request repair for external device/cable RGB/ Check external External device device and Replace Main B/D HDMI/DVI /Cable error cable normal Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 43 (Check normal operation of Main B/D normal? External Input, Component, HDMI/ RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 44 Measure voltage of each output of Power B/D Normal? ※ Normal Replace Main B/D voltage? Close Normal Check ST-BY 3.5V voltage? ☞A18 Replace Power B/D Replace Power Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 45 Power off by unknown status except listed case "POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble Abnormal "POWEROFF_CPUABNORMAL" Power off by CPU Abnormal Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 46 Speaker off Power Board Cancel OFF Replace Power Board and repair parts Check Disconnection Replace MAIN Board Speaker disconnection Replace Speaker Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 47 External Input Connect and check Normal signal error) other external audio? Check and fix device external device Check and fix external device Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 48 (Power B/D don’t have problem) If R/C operate, Normal Close Explain the customer operating? cause is interference from light in room. Replace R/C Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 49 - S/W Version RGB,HDMI/ Check and fix DVI, Optical Replace Main B/D Fix in external device/cable Recognition error accordance with technical information Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 50 ※ Describe the basis of the description (For models without any fix information, in “Part related to nose” in the Owner’s provide the description) Manual. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 51 Zoom part with Replace module exterior damage damage Cabinet Replace cabinet damage Remote controller Replace remote controller damage Stand Replace stand dent Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 52 Defected Type caused by T-Con/ Inverter/ Exchange Module itself (1) A-2/3 Module Exchange Module itself (2) A-3/3 Continue to the next page Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 53 Voltage and speaker checking method in case of audio/discontinuation audio error D. Function error_ No response in remote Remote controller operation checking method controller, key error Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 54 After turning on the power and disassembling the case, check with the naked eye, whether you can see light from 4 locations. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 55 Edge LED : PSU + LED Driver Type Check the DC 24V and Inverter on P202 P203 6~10 6~10 Inverter ON PWM Dim#1 A2-1 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 56 LED driver B+ 24V measuring method date Edge LED / LAMP : PSU Type Check the DC 24V and Inverter on A2-1 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 57 3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 58 3.5V 3.5V 3.5V 3.5V Inverter ON PWM Dim #1 Error-out Lamp : PSU, LIPS (Lamp SCANNING 모델: PWM Dim #2) A4-1 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 59 LCD TV Revised Content Power Board voltage measuring method date Check the DC 15V, 3.3V, 3.5V. LAMP : LIPS (Only 22LK33) A4-1 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 60 MENU red key (customer support signal test select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 61 <ALL MODELS> 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 62 A. Video error _Vertical/Horizontal bar, Established symptom residual image, light spot date LCD TV Revised Content LCD TV connection diagram (1) date Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 63 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only...
Page 64 Check Link Cable (LVDS) reconnection condition date Check the contact condition of the Link Cable, especially dust or mis insertion. A10-1 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 65 Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D!) Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 66 Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Solder defect, Short/Crack A - 1/5 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 67 Abnormal Power Section Solder defect, Short/Crack Abnormal Display Fuse Open, Abnormal power section Solder defect, Short/Crack Noise GRADATION GRADATION A - 2/5 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 68 Appendix : Exchange PSU(LED driver) No Light Dim Light Dim Light Dim Light No picture/Sound Ok A - 3/5 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 69 Panel Mura, Light leakage Press damage Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Press damage A - 4/5 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 70 Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect A - 5/5 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 71 Check front display LED date Front LED control : Menu Option Power Indicator Standby light ON ST-BY condition: Red Power ON condition: white Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 72 LED : NC PWM Dim #1 Edge LED LAMP Edge LED : PSU Error-out 32/37 PSU (Lamp Scanning Model : PWM Dim #2) Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 73 LED : NC PWM Dim #1 Error-out Edge LED (Lamp Scanning Model LAMP Edge LED : PSU 32/37 PSU : PWM Dim #2) Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 74 Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 75 1. Press the MENU button on the remote controller 2. Select the AUDIO function of the Menu 3. Select TV Speaker from Off to On Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 76 - MCLK ( master clock) : 12.288 MHz - RESET : normal status is high - VDD (Power) - LRCLK : 48KHz - SCLK : 3.072MHz Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 77 4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog Tester needle moves slowly, and defective when it does not move at all. Copyright © 2011 LG Electronics. Inc. All rights reserved. LGE Internal Use Only...

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