LG 29FU1RL/RG Service Manual
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LG 29FU1RL/RG Service Manual

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P/NO : MFL62077307
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May., 2010
Printed in China
COLOR TV
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SERVICE MANUAL
CHASSIS : CW91A
MODEL : 29FU1RL/RG
MODEL :
29FU1RL/RG-TK
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CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Internal Use Only
North/ Latin America
http://aic.lgservice.com
Europe/Africa
http://eic.lgservice.com
Asia/Oceania
http://biz.lgservice.com
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  • Page 1 Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com COLOR TV tu2522 tu2522 tu2522 tu2522 SERVICE MANUAL CHASSIS : CW91A MODEL : 29FU1RL/RG MODEL : 29FU1RL/RG-TK tu2522 tu2522 tu2522 tu2522 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. tu2522 tu2522...

  • Page 2: Table Of Contents

    T rouble Shooting....................10 Printed circuit board..................14 tu2522 tu2522 tu25 Block Diagram ......................16 Exploded View.....................18 SVC. Sheet........................tu2522 tu2522 tu25 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. premature 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

    Testing should be done at given condition if no condition is specified Testing and Inspection Method 1) Ambient Temperature : 25±5 ° C (CST 40±5 ° C) 1) Performance Testing --- According to LG TV Testing Standard 2) Ambient Humidity : 65±10% 2) Required Regulations...

  • Page 5: Adjustment Instructions

    Y-Axis Adjustment :Adjust convergence of Y-axis(vertical) 3.1.1.Adjustment (Use factory remote control) by moving the deflection yoke(DY) left and right. (1) Input in the 75Ω cable LG standard signal b. X-axis Adjustment : Adjust convergence of X-axis(horizontal) (Digital Pattern,480NC) by moving the deflection yoke(DY) up and down.
  • Page 6 Win31_wb Win31_wb TWB Adjustment Sub Add 3.6.1. Adjustment preparation Start Bit (1).NTSC Stop Bit -. Received LG standard Mono scope pattern (CH14). tu2522 tu2522 tu25 Offset -. Set the picture condition on “APC ON” (CLEAR) mode. (2). PAL Polarity -. Received PAL B/G 5CH pattern.
  • Page 7 This adjustment has to be done only if the picture has bad (US13CH) tint otherwise, it can be omitted if the picture has good tint. (1). Received LG standard pattern signal (SMPTE, 2CH). (7) EW PARAB (East-west PARABOLA) Adjust so that middle portion of the outer most left and (2).
  • Page 8 Enable AVL on EW pin AMLOW AM sound output gain BPB2 Bypass second BPF Fast filter IF-PLL DCXO AVL DCXO value Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 8 - Only for training and service purposes.
  • Page 9 (1) Remote controller (with AIR/CABLE TV button) 2. Checking (1) Check receiver channel operation for some abnormality by pressing AIR/CABLE TV button continuously. Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes.

  • Page 10: Trouble Shooting

    Check FBT T402 Check 200V line of CPT Board & Check FR901, P403, P403 if no problem check and Replace P902B, FR401 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 10 - Only for training and service purposes.
  • Page 11 Check Fuse and Diode of secondary waveform tu2522 tu2522 tu25 Load of SMPS trans(T801) Check/ Replace Q401 Check & Replace Check/ Replace IC501 T402 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes.
  • Page 12 SCL, SDA & SCL, SDA, Line Replace IC501 P20A (R, G, B out of P20A (R, G, B out of IC501) IC501) Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 12 - Only for training and service purposes.
  • Page 13 9, 11, 12 of IC601 pin5, 7 of IC601 R822, D827 Check the connection of side Correct the Board AV Board P201A Replace IC601 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes.

  • Page 14: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN tu2522 tu2522 tu25 tu2522 tu2522 tu25 tu2522 tu2522 tu25 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 14 - Only for training and service purposes.
  • Page 15 CONTROL Power tu2522 tu2522 tu25 tu2522 tu2522 tu25 tu2522 tu2522 tu25 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes.

  • Page 16: Block Diagram

    BLOCK DIAGRAM tu2522 tu2522 tu25 tu2522 tu2522 tu25 tu2522 tu2522 tu25 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 16 - Only for training and service purposes.
  • Page 17 MEMO tu2522 tu2522 tu25 tu2522 tu2522 tu25 tu2522 tu2522 tu25 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes.

  • Page 18: Exploded View

    Do not modify the original design without permission of manufacturer. tu2522 tu2522 tu25 tu2522 tu2522 tu25 option option tu2522 tu2522 tu25 Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 18 - Only for training and service purposes.
  • Page 19 tu2522 tu2522 tu2522 tu2522 tu2522 tu2522 tu2522 tu2522 tu2522 tu2522 tu2522 tu2522 P/N:3854VA0196H...
  • Page 20 tu2522 tu2522 tu25 tu2522 tu2522 tu25 SVC. SHEET : 3854V A0196H-S tu2522 tu2522 tu25...

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