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LG RT-21FU1RLD-T3 Service Manual

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P/NO : MFL42451216
Feb., 2009
Printed in China
North/ Latin America
Europe/Africa
Asia/Oceania
COLOR TV

SERVICE MANUAL

CHASSIS : CW81A
MODEL : RT-21FU1RLD-T3/Z3
MODEL :
21FU1RLD-T3/Z3
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 RT-21FU1RLD-T3

  • 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 : CW81A MODEL : RT-21FU1RLD-T3/Z3 MODEL : 21FU1RLD-T3/Z3 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Feb., 2009 P/NO : MFL42451216 Printed in China...
  • Page 2: Table Of Contents

    CONTENTS ....................2 SAFETY PRECAUTIONS................3 SPECIFICATIONS ..................4 ADJUSTMENT ...................6 TROUBLE SHOOTING ................14 BLOCK DIAGRAM ...................18 PRINTED CIRCUIT BOARD ..............19 EXPLODED VIEW ..................21 Copyright©2009 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©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes.
  • Page 4: Specifications

    2) Humidity : ~ 85 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 90 % Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 4 - Only for training and service purposes.
  • Page 5 On/ Off Special Language English/ Indonesia/ Thai/ Vietnam East Asia Input TV/ AV/ Component Child lock On/ Off Etc. Sleep Review Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 5 - Only for training and service purposes.
  • Page 6: Adjustment

    These instructions are applied to CW81A Chassis. 4-1. Adjustment (Using Factory Remote Control) 1) Input in the 75Ω cable LG standard signal (Digital Pattern, 2. Notes 480NC). 1) Because this is a cold chassis, it is not necessary to use an 2) Press the “ADJ’...
  • Page 7: White Balance Adjustment

    6) Converge the R, G, B horizontal line in unity(same line) by turning the 2 tabs of the 6-pole magnet. At this time, do Receive the LG standard pattern (PAL: Digital pattern, not change the angle between the 2 tabs.
  • Page 8 CPT. 2) Vertical linearity Adjustment Select SVC02(V-LIN) and adjust so that the size of the upper circle is alike with the one of the lower circle at LG standard pattern (PAL: EU05CH, NTSC: 13CH) 3) Vertical Size Adjustment Select SVC02(VA) and adjust so that the middle circle of the...
  • Page 9 Nicamon cnt 0:NICAM ON TH Off; 1:NICAM ON TH On NICAM off 0:NICAM ON TH Off; 1:NICAM ON TH On <Table 2> Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes.
  • Page 10 Ultra HF CPT FLAT HF CPT FLAT IRICO CPT FLAT LG CPT Necessary EW COR 0:normal mode Unnecessary 1:corner pin gain up mode Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 10 - Only for training and service purposes.
  • Page 11 0: Output without LPF; 1: Output by LPF W/O TXT:0 W/O TXT:0 Unnecessary W/ TXT:1 W/ TXT:1 VIN/XRGB 0: FBP/EXT RGB IN; 1: YC-C/DVD-Y/CR-IN/CB-IN Unnecessary Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes.
  • Page 12 200KHz (4.5-0.5v change); 1: 150KHz (4.5-0.5v change) Unnecessary AFT SENS ± ± 100KHz (4.5-0.5v change); 3: 50KHz (4.5-0.5v change) Unnecessary VCO ADJ Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 12 - Only for training and service purposes.
  • Page 13 Clock recovery count level1 (0~127) Unnecessary CKRVCNT2 Clock recovery count level2 (0~127) Unnecessary NICAM ON TH Unnecessary BERSEL Unnecessary AGCEN Unnecessary Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes.
  • Page 14: Trouble Shooting

    TROUBLE SHOOTING 1. TV FUNCTIONAL 2. TU / IF SECTION 3. VIDEO PROCESSING Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 14 - Only for training and service purposes.
  • Page 15 4. SMPS PRIMARY SECTION 5. SMPS SECONDARY SECTION Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes.
  • Page 16 6. VERTICAL SECTION 7. HORIZONTAL SECTION Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 16 - Only for training and service purposes.
  • Page 17 8. SOUND PROCESSING SECTION 9. CPT DRIVE SECTION > > CPT / e-GUN > Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes.
  • Page 18: Block Diagram

    BLOCK DIAGRAM Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 18 - Only for training and service purposes.
  • Page 19: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 19 - Only for training and service purposes.
  • Page 20 CONTROL PIP (option) LED+PRE AMP Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 20 - 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. (option) Copyright©2009 LG Electronics.Inc. All right reserved. LGE Internal Use Only - 21 - Only for training and service purposes.
  • Page 22 P/NO.:3854VA0196E (08.05.21)
  • Page 23 SVC. SHEET : 3854VA0196E-S...

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