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LED LCD TV
SERVICE MANUAL
CHASSIS : LM93B
MODEL : 24MN42A
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67580632 (1208-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
M2442A
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
24MN42A-PMN
M2442A-PMN
Printed in Korea
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Summary of Contents for LG 24MN42A
- Page 1 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 : LM93B MODEL : 24MN42A 24MN42A-PMN M2442A M2442A-PMN CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67580632 (1208-REV00) Printed in Korea...
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Page 2: Table Of Contents
ADJUSTMENT INSTRUCTION ............... 8 TROUBLE SHOOTING GUIDE ............... 12 BLOCK DIAGRAM ................. 23 EXPLODED VIEW .................. 24 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: Servicing Precautions
- 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes... - Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
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Page 6: Specification
Temp : -10 °C ~ 60 °C non condensing Storage Environment Humidity : 5 % ~ 90 % non condensing - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes... - Page 7 HDTV 1080P 1920*1080 67.5 148.5 HDTV 1080P 1920*1080 56.250 148.5 HDTV 1080P 50Hz * HDMI jack is for AV(video signal) - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
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Page 8: Adjustment Instruction
Impress Resolution XGA (1024 x 768 @ 60Hz) Model: 60 in Pattern Generator (1024X768@60Hz 16 step Gray Pattern) Pattern: 29 in Pattern Generator (MSPG-925 Series) - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes... - Page 9 Click “(1) Browse” tab, and then load download file (XXXX. bin) by clicking and open. (2) Connect the PC to USB jack - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 10 Year 2012 Analog : 1 Version Digital : 1 Analog : 3 Revision Digital : 3 Model Name M2442A - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 11 * W/B condition - Ambient Humidity : 20 % ~ 80 % - Ambient Temperature : 25 ± 5 °C - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
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Page 12: Trouble Shooting Guide
3pin of P200, change IR board when use remote controller? Or check Line short or open of P200 Insert F/W X600 - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes... - Page 13 If is under 4.8V at L710, Check open and short Of line between L710 and P201. Insert the F/W back or REPLACE LCD MODULE - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 14 21,25,26,27,28,29,30) Another is change IC600. Change module WAVEFORMS 8,9,12,13,15,16,18,19,20,21, 10,11,22,23Pin of P201 25,26,27,28,29,30Pin of P201 (Clock line) (Data Line) - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 15 IC600 or TU401 Change Main PCBA WAVEFORMS 67, 68pin of IC600 6Pin of TU401 (SDA) 7Pin of TU401 (SCL) - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 16 Another is Is wavef orm at R651 change AV cable Change IC600 WAVEFORMS R651 (CVBS) - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 17 Is wavef orm at R628, is open or short, Another is R630, R634 Change RGB cable Change IC600 WAVEFORMS R634(R) R628(B) R630(G) - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 18 7. Abnormal screen (HDMI)-Main PCBA - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 19 Another is change IC502 Change speaker and wire R513(SDO) 23pin of IC502 R511(WS) R512(SCK) 24pin of IC502 1pin of P501(Audio out) R510(MCLK) - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 20 IC600 or TU401 Change Main PCBA WAVEFORMS 7Pin of TU401 (SCL) 67,68 pin of IC604 6Pin of TU401 (SDA) - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 21 Another is Is wavef orm at C688,C689 change AV cable Change IC600 WAVEFORMS C688,C689 (audio in) - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
- Page 22 Check Line between JK301 and IC600 Is wavef orm at R321,R322, is open or short, Another is R323,R324,R325,R326 Change HDMI cable Change IC600 - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
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Page 23: Block Diagram
BLOCK DIAGRAM - 23 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes... -
Page 24: Exploded View
X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 24 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes... - Page 25 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 26 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 27 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 28 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 29 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 30 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 31 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...