LG 14FU7RB Service Manual
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LG 14FU7RB Service Manual

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P/NO : MFL40183504
Feb., 2010
Printed in China
North/ Latin America
Europe/Africa
Asia/Oceania
COLOR TV

SERVICE MANUAL

CHASSIS : MC059D
MODEL : 14FU7RB
MODEL :
14FU7RB-T2
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com

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Summary of Contents for LG 14FU7RB

  • Page 1: Service Manual

    North/ Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com COLOR TV SERVICE MANUAL CHASSIS : MC059D MODEL : 14FU7RB MODEL : 14FU7RB-T2 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Feb., 2010 P/NO : MFL40183504 Printed in China...

  • Page 2: Table Of Contents

    CONTENTS ....................2 SAFETY PRECAUTIONS................3 SPECIFICATIONS ..................4 ADJUSTMENT ...................6 TROUBLE SHOOTING................11 BLOCK DIAGRAM ...................15 PRINTED CIRCUIT BOARD ..............16 EXPLODED VIEW ..................18 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 2 - Only for training and service purposes.

  • Page 3: Safety Precautions

    CONDUIT etc. component failure. To Instrument’s 0.15uF exposed METALLIC PARTS 1.5 Kohm/10W Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes.

  • Page 4: Specifications

    1) Temp : 0 ~ 45 deg Operating Environment 2) Humidity: Below 85 % 1) Temp: -20 ~ 60 deg Storage Environment 2) Humidity: Below 85 % Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 4 - Only for training and service purposes.
  • Page 5 No signal power off action Auto Sleep English English French France Language Parsi Parsi Special Arab Arab TV/AV Input On/Off Child lock On/Off Blue back Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 5 - Only for training and service purposes.

  • Page 6: Adjustment

    3-2. Adjustment Preparation 6) Pull the DY slowly backward and fix it when the whole 1) Input LG standard signal 65dB (±1dB) into 75Ω cable. screen becomes red. (The specified torque for fixing DY 2) Connect the digital multi-meter to J105. (AGC Check screw should be 10Kg/cm).

  • Page 7: White Balance Adjustment

    SCREEN Voltage ADJ receiver sufficiently. 7-1. Adjustment Preparation W/B Fix Received LG standard pattern (Digital Pattern, 480NC,13CH) and set the picture condition on " APC ON" (CLEAR) mode. 7-2. Adjustment FOCUS ADJ. Turn the focus volume on the FBT upper direction to have the best focus vertical line and horizontal line as below: STC ADJ.
  • Page 8 FM PRESCALER NICAM PRE NICAM PRESCALER SCART PRE SCART PRESCALER A2 FM TH A2 PRESCALER FIRST TH MONO THRESHOLD A2 THRESHOLD Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 8 - Only for training and service purposes.
  • Page 9 OVER MO SW OVER.MOD.SW Unnecessary VP52 OVER MO LE OVER.MOD.LEVEL 0 ~ 15 TINT TH Tint Through 0 / 1 Unnecessary VP53 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes.
  • Page 10 SECAM Killer circuit enable 0 / 1 Unnecessary OSD CONT OSD Contrast 0 ~ 7 Unnecessary OSD POS OSD Position 1 ~ 60 Unnecessary Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 10 - Only for training and service purposes.

  • Page 11: Trouble Shooting

    TROUBLE SHOOTING 1. TV FUNCTIONAL 2. TU / IF SECTION 3. VIDEO PROCESSING Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes.
  • Page 12 4. SMPS PRIMARY SECTION 5. SMPS SECONDARY SECTION Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 12 - Only for training and service purposes.
  • Page 13 6. VERTICAL SECTION 7. HORIZONTAL SECTION Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes.
  • Page 14 8. SOUND PROCESSING SECTION 9. CPT DRIVE SECTION Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 14 - Only for training and service purposes.

  • Page 15: Block Diagram

    BLOCK DIAGRAM Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes.

  • Page 16: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 16 - Only for training and service purposes.
  • Page 17 MEMO Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes.

  • Page 18: Exploded View

    X-RADIATION,Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. OPTION Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 18 - Only for training and service purposes.
  • Page 19 P/N: 3854VA0196C Copyright©2010 LG Electronics.Inc. All right reserved. LGE Inter nal Use Only Only for training and service purposes.
  • Page 20 SVC. SHEET : 3854VA0196C-S...

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