LG 26LG30D Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LB81A

MODEL : 26LG30D

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

Internal Use Only

website:http://biz.LGservice.com

26LG30D-AA

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Page 1: Service Manual
Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LB81A MODEL : 26LG30D 26LG30D-AA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Page 2: Table Of Contents
PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................15 BLOCK DIAGRAM...................19 EXPLODED VIEW .................. 21 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 % LGE Spec 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 60.123 75.029 78.75 1280*768 47.78 59.87 79.5 WXGA 1360*768 47.72 59.8 84.75 WXGA 1366*768 47.56 59.6 84.75 WXGA Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 148.500 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. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9: 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. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 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. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11 - Set Input to RGB and connect D-sub cable to set - Measurement Condition: (100-240V@ 50/60Hz) - Confirm DPM operation at the state of screen without Signal Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only...
Page 13 60 : RGB 2-Page 0~7F Read 90 : HDMI 2-Page 80~FF Read 3-Page 0~7F Read 3-Page 80~FF Read Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 14 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. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 15: Troubleshooting
After checking thoroughly all path once again, You should decide to replace Main Board or not. Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 16 After checking thoroughly all path once again, You should decide to replace Main Board or not. Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
Page 17 After checking thoroughly all path once again, You should decide to replace Main Board or not. Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 18: Hdmi Doesn't Display
After checking thoroughly all path once again, You should decide to replace Main Board or not. Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
Page 21: 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. - 21 - LGE Internal Use Only Only for training and service purposes...
Page 32 Jun., 2008 P/NO : MFL42915904 Printed in Korea...

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LG 26LG30D Service Manual

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SERVICE MANUAL

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