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LG 42LA69 Service Manual

42la69, 42la69**-z series, chassis : ld33b
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See also: Owner's Manual
LED TV
SERVICE MANUAL
CHASSIS : LD33B
MODEL : 42LA69**
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67727103(1301-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
42LA69**-Z*
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 42LA69

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED TV SERVICE MANUAL CHASSIS : LD33B MODEL : 42LA69** 42LA69**-Z* CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67727103(1301-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION .............. 14 BLOCK DIAGRAM ................. 21 EXPLODED VIEW .................. 22 SCHEMATIC CIRCUIT DIAGRAM .............. - 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    HOTBIRD 6/8/9, EUTELSAT-SESAT, ASTRA 1L/H/M/ KR, ASTRA 3A/3B, BADR 4/6, ASTRA 2D, EUROBIRD 3, EUTELSAT-W7, HELLASSAT 2, EXPRESS AM1, TURK- SAT 2A/3A, INTERSAT10 - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 SDPIF out (1EA) SPDIF out USB (1EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD Ethernet Connect(1EA) Ethernet Connect - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 HDTV 1080i 1920×1080 33.75 60.00 HDTV 1080i 1920×1080 33.72 59.94 HDTV 1080i 1920×1080 56.250 HDTV 1080p 1920×1080 67.5 HDTV 1080p - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Hdmi Input

    33.716 / 33.75 29.976 / 30.00 HDTV 1080P 1920*1080 56.250 HDTV 1080P 1920*1080 67.43 / 67.5 59.94 / 60 HDTV 1080P - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 Primary(HDTV 1080P) 56.250 148.5 Side-by-side(half) Secondary(HDTV 1080P) Top-and-Bottom Primary(HDTV 1080P) 67.43 / 67.5 59.94 / 60 148.35/148.50 Side-by-side(half) Secondary(HDTV 1080P) - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 (Photo : side by Side(half), Top & Bottom) 640*350 720*400 640*480 Others 2D to 3D 800*600 1152*864 1280*1024 (“*” 3D supported mode manually & automatically) - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 7.9. 3D Input mode Single Frame Frame Side by Side Top & Bottom Checker board 2D to 3D Sequential Packing iii. - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Adjustment Instruction

    Address at ‘in start’ menu mode. ▪ Play: Press Enter key ▪ Result: Ready, Test, OK or NG ▪ Printer Out (MAC Address Label) - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 Check whether the key was downloaded or not at ‘In Start’ menu. (Refer to below). => Check the Download to CI+ Key value in LGset. - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 LD33B 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 Transmission [A][I][][Set ID][][20][Cr] [O][K][X] or [NG] ⓔ Checksum(LG TV): Changeable by total EDID data. ⓔ1 ⓔ2 ⓔ2 ⓔ3 (2) Check the menu on in-start...

  • Page 16: White Balance Adjustment

    LD33B 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 Gain adjustment completed Offset adjustment(internal white pattern) ⓔ Checksum(LG TV): Changeable by total EDID data. Offset adjustment completed ⓔ1 ⓔ2 ⓔ3...

  • Page 17: Color Temperature

    ∆uv Cool 0.269 0.273 13000 K 0.0000 Medium 0.285 0.293 9300 K 0.0000 Warm 0.313 0.329 6500 K 0.0000 - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 (Pattern Generator MSHG-600, MSPG-6100[Support HDMI1.4]) * HDMI mode NO. 872 , pattern No.83 (1) Please input 3D test pattern like below. - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Stand-by EQ Off (Distortion=10% 8.10 10.8 Vrms mode. AVL Off max Output) Clear Voice Off Speaker (8Ω Impedance) - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 (2) Select "Tool Option 1" and push "OK" key. (3) Punch in the number. (Each model has their number) - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Block Diagram

    BLOCK DIAGRAM - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 22: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

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