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Summary of Contents for LG 21FU3RL
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Page 1: Service Manual
Internal Use Only website:http://biz.LGservice.com COLOR TV SERVICE MANUAL CHASSIS : CW81A MODEL : 21FU3RL 21FU3RL-T3 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
Trouble Shooting ..................8 Block Diagram..................13 Exploded View..................14 Exploded View Parts List ...............15 Replacement Parts List ................16 SVC. Sheet....................Copyright © 2008 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only 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 © 2008 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes... -
Page 4: Specifications
2) Humidity : ~ 85 % Storage Environment 3) Temp : -20 ~ 60 deg 4) Humidity : ~ 90 % Copyright © 2008 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes... -
Page 5: Adjustment Instructions
4-1. Adjustment (Use factory remote control) These adjustment instructions are applicable to CW81A/B Chassis. (1) Input in the 75Ω cable LG standard signal (Digital Pattern,480NC) (2) Press the “ADJ” key of factory remote control once to make the TV set display horizontal line. -
Page 6: Auto Adjustment
(vertical) by moving the deflection yoke(DY) left and right. 7-1. Adjustment Preparation Received the LG standard pattern (PAL : Digital Pattern, 2) X-axis Adjustment : Adjust convergence of X-axis 480NC, 13CH, NTSC : Crosshatch pattern, Ch.09 ) and set (horizontal) by moving the deflection the picture condition on “APC ON”... -
Page 7: Deflection Setting Data Adjustment
(See figure 2) 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 signal (PAL : EU05CH, NTSC : 13CH). (3) Vertical Size Adjustment. -
Page 8: Trouble Shooting
TROUBLE SHOOTING 1. TV FUNCTIONAL 2 TU/IF SECTION J512, J544 Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes... -
Page 9: Video Processing
Maneuver defectiveness Maneuver defectiveness Maneuver defectiveness No color 4. SMPS PRIMARY DB801(TS4805G), DB802(D5SB60) IC810(STR-W6553A(MONO)), (STR-W6554A(STEREO)) C852, R808, ZD851 Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes... - Page 10 5. SMPS SECONDARY SECTION DB801(TS4805G), DB802(D5SB60) IC810(STR-W6553A(MONO)), (STR-W6554A(STEREO)) C852, R808, ZD851 6. VERTICAL SECTION , STV9326 Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
- Page 11 7. HORIZONTAL SECTION L402, L403, L404, C401, C402, C412 8. SOUND PROCESSING SECTION (LC75024/LA72702) (LV762xx) Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
- Page 12 9. CPT DRIVE SECTION D902 D902 Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
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Page 13: Block Diagram
BLOCK DIAGRAM Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes... -
Page 14: 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. - 14 - LGE Internal Use Only Only for training and service purposes... -
Page 15: Exploded View Parts List
6700NFNS11H(NTSC DIN TYPE) SCAL E UNIT D ate TITLE '07.05.08 CIRCUIT DIAGRAM DSGD. CHKD. APPD. CW-81A CHASSIS 08/02/29 17:01:33 DWG NO. EBY41778501 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 16: Replacement Parts List
May, 2008 P/NO : MFL41322905 Printed in Korea...
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