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LG 29FU1RG Service Manual

LG 29FU1RG Service Manual

Chassis : cw91a

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P/NO : MFL62077307
May., 2010
Printed in China
North/ Latin America
Europe/Africa
Asia/Oceania
COLOR TV
SERVICE MANUAL
CHASSIS : CW91A
MODEL : 29FU1RL/RG
MODEL :
29FU1RL/RG-TK
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 29FU1RG

  • Page 1 Internal Use Only North/ Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com COLOR TV SERVICE MANUAL CHASSIS : CW91A MODEL : 29FU1RL/RG MODEL : 29FU1RL/RG-TK CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. May., 2010 P/NO : MFL62077307 Printed in China...
  • Page 2 Contents ........................2 Safety Precautions....................3 Specifications......................4 Adjustment Instructions .................5 T rouble Shooting....................10 Printed circuit board..................14 Block Diagram ......................16 Exploded View.....................18 SVC. Sheet........................Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 2 - Only for training and service purposes.
  • Page 3 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 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 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 Adjustment Sub Add 3.6.1. Adjustment preparation Start Bit (1).NTSC Stop Bit -. Received LG standard Mono scope pattern (CH14). Offset -. Set the picture condition on “APC ON” (CLEAR) mode. (2). PAL Polarity -. Received PAL B/G 5CH pattern. EPRom_S -.
  • 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) (2). Set the picture condition on “APC ON” (CLEAR) mode.
  • Page 8 Enable AVL on EW pin AMLOW AM sound output gain BPB2 Bypass second BPF Fast filter IF-PLL DCXO value DCXO AVL 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 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 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 MAIN Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 14 - Only for training and service purposes.
  • Page 15 CONTROL Power Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes.
  • Page 16 BLOCK DIAGRAM 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 X-RADIATION,Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. option option Copyright©2010 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 18 - Only for training and service purposes.
  • Page 19 P/N:3854VA0196H...
  • Page 20 SVC. SHEET : 3854V A0196H-S...

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