LG DM2780D Service Manual Download | Manualshive

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CINEMA 3D TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LD93K

MODEL : DM2780D

DM2780D-PUM

North/Latin America

http://aic.lgservice.com

Europe/Africa

http://eic.lgservice.com

Asia/Oceania

http://biz.lgservice.com

Internal Use Only

P/NO : MFL63642458(1110-REV00) Printed in Korea

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Summary of Contents for DM2780D

Page 1: ...IS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LD93K MODEL DM2780D DM2780D PUM North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only P NO MFL63642458 1110 REV00 Printed in Korea ...

Page 2: ...ll right reserved Only for training and service purposes LGE Internal Use Only 2 CONTENTS CONTENTS 2 PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 12 TROUBLE SHOOTING 16 BLOCK DIAGRAM 24 EXPLODED VIEW 25 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...d Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path...

Page 4: ... on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge...

Page 5: ...the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 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 3 Solder the connections CAUTION Maintain original spacing between the replac...

Page 6: ... m2 200 250 Variation 75 3 Contrst Ratio CR 700 1000 4 Color Coordinates RED Rx 0 642 Ry 0 335 Green Gx 0 299 Gy 0 636 Blue Bx 0 153 By 0 043 White Wx 0 313 Wy 0 329 4 2 Optical Spec 1 Application Range This spec sheet is applied all of the CINEMA 3D TV used LD93K chassis 2 Specification Each part is tested as below without special appointment 2 1 Temperature 25 C 5 C 77 F 9 F CST 40 C 5 C 2 2 Rel...

Page 7: ...p 26 46W Max 28 674W 4 3 LED No Item Specification Remarks 1 Market US 2 Broadcasting system 1 Digital ATSC 2 Analog NTSC 3 Receiving system ATSC NTSC M 4 Component Input Y Cb Cr Y Pb Pr Rear 1EA 5 RGB Input RGB PC Analog D SUB 15Pin 6 HDMI Input HDMI 1 2 Rear 1EA version 1 4 support PC 7 DVI Input 8 Audio Input RGB Audio L R Input 9 SPDIF out 1EA SPDIF out 10 Earphone out Antenna AV Component RGB...

Page 8: ...ng Environment Temp 10 C 35 C Humidity 20 80 5 Storage Environment Temp 10 C 60 C non condensing Humidity 5 90 non condensing No Item Min Typ Max Remark 1 C30 Cool White Balance X axis 0 253 0 283 0 313 DQA 0 03 Measurement Condition 9300k White Balance Y axis 0 268 0 298 0 328 DQA 0 03 PSM Outgoing condition 2 0 Medium White Balance X axis 0 263 0 295 0 325 DQA 0 03 Input signal white pattern 85 ...

Page 9: ... 37 500 75 000 31 500 4 800 600 37 879 60 317 40 000 5 800 600 46 875 75 000 49 500 6 1024 768 48 363 60 004 65 000 7 1024 768 60 023 75 029 78 750 8 1152 864 67 500 75 000 108 000 9 1280 720 45 000 60 000 74 250 10 1280 800 49 702 59 810 83 500 11 1280 1024 63 981 60 020 108 000 12 1280 1024 79 976 75 025 135 000 13 1400 1050 65 317 59 978 121 750 14 1440 900 55 935 59 887 106 500 15 1600 900 60 ...

Page 10: ... 67 5 59 94 60 148 35 148 50 HDTV 1080P 8 2 HDMI DTV No Specification Remark Resolution H freq kHz V freq Hz Pixel clock MHz 1 720 480 15 73 59 94 13 500 SDTV DVD 480I 525I 2 720 480 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720 576 15 625 50 00 13 500 SDTV DVD 576I 625I 50Hz 4 720 480 31 47 59 94 27 000 SDTV 480P 5 720 480 31 50 60 00 27 027 SDTV 480P 6 720 576 31 25 50 00 27 000 SDTV 576P 50Hz 7 1...

Page 11: ...011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 9 1 RGB EDID Data Product ID 22685 9 EDID 9 2 HDMI EDID Data Product ID 22687 week year Check sum Adjustable Data ...

Page 12: ...DC Adjustment Jig equipment SVC remote controller 2 7 Don t push The IN STOP KEY after completing the function inspection 3 Tool Option 4 Main PCB check process APC After Manual Insult executing APC 4 1 Download 1 Execute ISP program Mstar ISP Utility and then click Config tab 2 Set as below and then click Auto Detect and check OK message If display Error Check connect computer jig and set 3 Click...

Page 13: ...ed to additional adjust process ADC Calibration Protocol RS232 Adjust Sequence aa 00 00 Enter Adjust Mode xb 00 40 Component1 Input 480i ad 00 10 Adjust 480i Comp1 xb 00 60 RGB Input 1024 768 ad 00 10 Adjust 1024 768 RGB aa 00 90 End Adjust mode 4 3 2 ADC Calibration External Only adjust in the Component mode 480i Input the Signal in the Component Component 480i Adjusted only this mode MODEL 209 i...

Page 14: ...ot always There is impossible to download by bar code scan so It need Manual download 1 Press the ÆInstart Ø key of ADJ remote controller 2 Go to the menu Æ5 Model Number D L Ø like below photo 3 Input the Factory model name ex M2380DF PZ or Serial number like photo 4 Check the model name Instart menu Factory name displayed ex M2380DF 5 Check the Diagnostics DTV country only Buyer model displayed ...

Page 15: ...on t push The IN STOP KEY before completing the function inspection When doing Adjustment Please make circumstance as below 5 4 Function Check 5 4 1 Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV SCART CVBS 3 COMPONENT 480i 4 RGB PC 1920 x 1080 60hz 5 HDMI 6 PC Audio In Display and Sound check is executed by Remote controller 5 4 2 PCMCIA CARD Check You must ad...

Page 16: ...Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 16 TROUBLESHOOTING 1 Power Up Boot Fail Trouble Shooting ...

Page 17: ...Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 17 2 No Picture Trouble Shooting ...

Page 18: ...Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 18 3 Digital TV Video Trouble Shooting ...

Page 19: ... 19 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 Analog TV Video Trouble Shooting ...

Page 20: ... 20 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 5 Component Video Trouble Shooting ...

Page 21: ...Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 21 6 RGB Video Trouble Shooting ...

Page 22: ... 22 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 7 HDMI Video Trouble Shooting ...

Page 23: ... 23 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 8 All Source Audio Trouble Shooting ...

Page 24: ...Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 24 BLOCK DIAGRAM 24 ...

Page 25: ...nical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAF...

Page 26: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 27: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 28: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 29: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 30: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 31: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 32: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 33: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 34: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 35: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 36: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 37: ...pdfFactory 평가판에서 만든 PDF www softvision co kr Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 38: ......

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