LG 42LG61YD Service Manual

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

LCD TV

SERVICE MANUAL

CHASSIS : LB81C

MODEL : 42LG61YD

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

Internal Use Only

website:http://biz.LGservice.com

42LG61YD-AC

Table of Contents

Need help?

Do you have a question about the 42LG61YD and is the answer not in the manual?

Questions and answers

Summary of Contents for LG 42LG61YD

Page 1: Service Manual
Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LB81C MODEL : 42LG61YD 42LG61YD-AC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Page 2: Table Of Contents
PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............12 TROUBLE SHOOTING ................18 BLOCK DIAGRAM...................22 EXPLODED VIEW .................. 34 SVC. SHEET ....................Copyright © 2008 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
Page 3: Product Safety
An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2008 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 © 2008 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2008 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 6: Specification
2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7 (With PWM Dimiming) RGB/HDMI-PC (Without PWM Dimining) Color Distortion, DG Color Distortion, DP Color S/N, AM/FM Color Killer Sensitivity Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 (With PWM Dimiming) RGB/HDMI-PC (Without PWM Dimining) Color Distortion, DG Color Distortion, DP Color S/N, AM/FM Color Killer Sensitivity Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9 (With PWM Dimiming) RGB/HDMI-PC (Without PWM Dimining) Color Distortion, DG Color Distortion, DP Color S/N, AM/FM Color Killer Sensitivity Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 84.75 WXGA 1280*1024 63.595 60.0 108.875 SXGA FHD Model only 1920*1080 66.647 59.988 138.625 WUXGA FHD Model only Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11 148.500 HDTV 1080P 50Hz HDCP 1920*1080 67.433 59.94 148.352 HDTV 1080P HDCP 1920*1080 67.500 148.500 HDTV 1080P HDCP Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 12: Adjustment Instruction
“AC Power” off. filexxx.bin 6) After putting “AC Power” on and check updated version on your TV. Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13 MODEL : 209 in Pattern Generator(480i Mode) Pattern : 65 in Pattern Generator (MSPG-925 Series, MPSG-1025D) - 7 color bar. Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 16 Confirm whether is normal or not when between power board's ac block and GND is impacked on 1.5kV(dc) or 2.2kV(dc) for one second Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
Page 17 PC. (128th Data is the CheckSum of 127-bytes data : That’s OK if the value of adding 128-bytes Data is Zero) START Data 1 Data 128 STOP Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 21: Hdmi Doesn't Display
Afte r c hecking thoro ugh ly all pa th onc e again, You sh ou ld decid e to rep lace Main Bo ard or no t. Copyright © 2008 LG Electronics. Inc. All right reserved. - 21 -...
Page 34: Exploded View
EXPLODED VIEW EXPLODED VIEW EXPLODED VIEW EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts Many electrical and mechanical parts in this chassis have special safety-related characteristics.
Page 35: Schematic Diagram
R1139 4.7K R1138 4.7K R1130 4.7K R1129 4.7K R1128 4.7K R1127 4.7K R1124 EAN42961201 EAN42961201 0.1uF C164 NON_YAMAHA 0.01uF C1003 R1185 NON_YAMAHA Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 36 470pF C214 470pF C213 470pF C212 0.1uF C222 0.1uF C208 0.1uF C207 0.1uF C206 470pF C205 470pF C204 470pF C203 470pF C202 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 38 3.3V NC_6 NC_5 NC_4 NC_3 AIF_2 AIF_1 SCL_T SDA_T GND_2 NC_2 TP[VT] RF_AGC NC_1 +B[5V] GND_1 BB[CTR] ANT[5V] TDFV-D135F EBL42367001 TU401-*1 TAIWAN_TUNER Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 40 MBW3216-501TF L606 JP6020 470pF C619 USB DOWN STREAM P602 KJA-UB-4-0004 C618 470pF JP6019 JP6018 DOUT1 RIN1 ROUT1 DIN1 DOUT2 DIN2 RIN2 ROUT2 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41 R751 1K 3.6K R741 MMBD301LT1G EAG42025501 EEPROM_WP R726 1K R724 1K R722 1K 3.6K 3.6K R704 R702 3.6K R701 EAG39789401 EAG39789401 EAG39789401 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 42 PROTECT OUT1B_2 PWM_3A/PWM_HP1 PVDD1B_1 PWM_3B/PWM_HP2 PVDD1B_2 PVDD1A_1 PVDD1A_2 OUT1A_1 OUT1A_2 SDATA PGND1A_1 DVDD PGND1A_2 DVSS R859 Fiber Optic R860 MLB-201209-0120P-N2 JP8004 JP8001 Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 45 Jun., 2008 P/NO : MFL42276206 Printed in Korea...

This manual is also suitable for:

42lg61yd-ac

LG 42LG61YD Service Manual

Quick Links

SERVICE MANUAL

Need help?

Questions and answers

Summary of Contents for LG 42LG61YD

Page 1: Service Manual

Page 2: Table Of Contents

Page 3: Product Safety

Page 4: Servicing Precautions

Page 6: Specification

Page 12: Adjustment Instruction

Page 18: Troubleshooting

Page 21: Hdmi Doesn't Display

Page 22: Block Diagram

Page 34: Exploded View

Page 35: Schematic Diagram

This manual is also suitable for:

LG 42LG61YD Service Manual

Quick Links

SERVICE MANUAL

Need help?

Questions and answers

Related Manuals for LG 42LG61YD

Summary of Contents for LG 42LG61YD

This manual is also suitable for:

Table of Contents