LG 56DC1D Service Manual
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LG 56DC1D Service Manual

LG 56DC1D Service Manual

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DLP Projection TV
SERVICE MANUAL
CHASSIS : MD-61A
MODEL : 56DC1D
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
56DC1D-AB
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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  • Page 1 DLP Projection TV SERVICE MANUAL CHASSIS : MD-61A MODEL : 56DC1D MODEL : 56DC1D-AB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ........................2 SAFETY PRECAUTIONS ....................3 CONTROL DESCRIPTIONS ..................4 SPECIFICATIONS ......................7 ADJUSTMENT INSTRUCTIONS ..................11 PRINTED CIRCUIT BOARD..................20 BLOCK DIAGRAM .......................28 EXPLODED VIEW .......................32 EXPLODED VIEW PARTS LIST...................33 REPLACEMENT PARTS LIST ..................34 SVC. SHEET ........................- 2 -...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. 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.

  • Page 4: Control Descriptions

    DESCRIPTION OF CONTROLS - When using the remote control aim it at the remote control sensor of the set. - There maybe a defect in operation of this remote control in an excessively bright room when viewing this set. POWER selects analogue or digital mode.
  • Page 5 - Shown is a simplified representation of the set. - What is shown here may be somewhat different from your set. Front Panel Controls INPUT MENU INPUT Button (Volume Down/Up) MENU Button (Programme Up/Down) OK Button Operation Indicator/ POWER Button Lamp Indicator/ Temperature Indicator Function Status Indicators...
  • Page 6 Back Panel Controls AUDIO AV IN 2 (L)/ MONO VIDEO S-VIDEO S-VIDEO INPUT ANTENNA COMPONENT IN RGB IN AV IN 1 AV OUT VIDEO AV IN 2 VIDEO (PC/DTV) MONO AUDIO DIGITAL AUDIO OPTICAL OUTPUT AUDIO S-VIDEO AUDIO RGBDVI HDMI /DVI IN SERVICE ONLY ANTENNA...

  • Page 7: Specifications

    SPECIFICATIONS NOTE : Specifications and others are subject to change without notice for improvement. Application Range This spec sheet is applied to the DLP TV used MD-61A chassis. Specification Each part is tested as below without special appointment. 1) Temperature : 25±5°C (CST : 40°C±2°C) 2) Relative Humidity : 65±10% 3) Power Voltage : Standard input voltage(240V~ ±...
  • Page 8 Feature and Function Item Specification Remark Remocon Code LG Code RF Input 1 Tuner(PAL/DVB-T) Rear AV Input CVBS/ L/ R/ S-VIDEO (S-VIDEO Priority) Side 1, Rear 1 Component Input 480i/ 576i/ 480p/ 576p/ 720p/ 1080i Rear, Y Pb Pr Component Audio(L,R) Input Component 1 &...
  • Page 9 Component Video Input (Y,C Resolution H-freq.(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 720 x 480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 720 x 480 15.75 60.00 13.514 SDTV, DVD 480I(525I) 720 x576 15.6125 50.00 13.500 SDTV, DVD 576I(625I) 720 x 480 31.47 59.94 27.000 SDTV 480P...
  • Page 10 RGB Input (DTV) Resolution H-freq.(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 720 x 480 31.47 59.94 27.000 SDTV 480P 720 x 480 31.50 60.00 27.027 SDTV 480P 720 x576 31.25 50.00 27.000 SDTV 576P 1280 x 720 44.96 59.94 74.176 HDTV 720P 1280 x 720 45.00 60.00...

  • Page 11: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object 4. Adjusting the Optical Engine These instructions apply to the DLP Projection TV (Chassis: MD-61A). 2. Notes (1) Because this is not a hot chassis,it is not necessary to use an isolation transformer. However, the use of an insolation transformer will help protect test equipment.
  • Page 12 (3) Do not use pressure when cleaning the DMD. The static electricity and pollution can damage the DMD. 6. MICOM Download (1) Execute LG Term program that is a communication program for Serial COM Port Terminal.(exution file : <Fig. 6> HD5 Optical Engine Projection Lens LGTERM.EXE)
  • Page 13 (2) Verify settings for LG Term program.Check setting of LG (6) If you want to download MICOM program after select 0x1 Term program. in MICOM Download Menu, press 1 key, and if you want to Sellect the ‘Setup’ on upper Menu. -> Sellect the ‘Serial get out of the Menu, press any key.
  • Page 14 <Fig. 14> (8) If appears the massage 'Micom Init End', the download is done succesfully. (2) Verify settings for LG Term program.Check setting of LG Term program. Sellect the ‘Setup’ on upper Menu. -> Sellect the ‘Serial 9. CPLD Download Work Port’.
  • Page 15 9-2. Download Program Establishment 10. HD5 Engine Rilt & Keystone adjustment Apply the HD5 Engine <Fig. 19> (1) Open the CPLD program, click the (Hardware Setup) button. <Fig. 22> (2) Click Add Hardware in Hardware Setup. (3) In Hardware Type/Port check ByteBlasterMV or 10-1.
  • Page 16 (2) In case of the upper screen size is large bottom screen (4) Select the H_position using CHANNEL key. size than: upward projector (5) Change data by using the VOLUME keys on the remote control in order to adjust left/right screen semmetry. (6) If symptom is out of adjustable range: Check the light engine adjustment 11-3.
  • Page 17 (2) Offset/Gain Adjustment 13-3. NTSC Adjustment 1) Press ADJ key on the Remote Control to enter the adjustment mode. (1) Connect Video Signal Generator (Master) to TV AV1 2) Adjustment is automatic by pressing the VOLUME+ ( terminal. And then Set the equipment as bellow. button in “5.ADC 1080i Comp2/RGB”...
  • Page 18 14. Adjusting the Actuator (COLOR WHEEL) Starting point of noise - Initial Data : ACT Gain=90(60Hz) ACT Gain=60(50Hz) (appearance GREEN) 140 G 14-1. Required Test Equipment 140 G : Service Remote Control 14-2. Preparation for Adjustment (1) Connect a power source to the TV Set and turn TV set on. (2) Using the Service Remote Control, enter from ADJ to Actuator(Actuator on).
  • Page 19 16-4. Program Edit. (1) Parameter Edit: Interval time and Target White coordinates are between command words per Mode, adjustable to correct a common difference. (Edit --> Parameter Edit) <Fig. 35> CCA Automatic Adjustment Set-up 16-3. Sequence of Adjustment (1) Start the adjustment program (ccws.exe) (2) Select the correct model in Work->Select_Model.
  • Page 20 17. Adjustment of factory shipment mode This adjustment is to verify the set conditon after finish all adjusments and tests, use remote control pressing IN_STOP key to verify TV condition as below. Item VALUE REMARK Power Stand by Analogue : 0,1,2,3,4,5,6,7 Initial Channel Digital : 1,10,11,12,13,14, 15,16,100...

  • Page 21: Printed Circuit Board

    PRINTED CIRCUIT BOARD MAIN(TOP) - 21 -...
  • Page 22 MAIN(BOTTOM) - 22 -...
  • Page 23 DIGITAL(TOP) - 23 -...
  • Page 24 DIGITAL(BOTTOM) - 24 -...
  • Page 25 POWER - 25 -...
  • Page 26 CONTROL HD5 DREVER SIDE A/V CASE S/W - 26 -...
  • Page 27 JACK PRE AMP CW SENSOR INTERFACE TELETEXT - 27 -...

  • Page 28: Block Diagram

    BLOCK DIAGRAM - 28 -...
  • Page 29 - 29 -...
  • Page 30 - 30 -...
  • Page 31 - 31 -...

  • Page 32: Exploded View

    EXPLODED VIEW - 32 -...

  • Page 33: Exploded View Parts List

    Cover Assembly, 56DC1D-AB MA61A 62”” FOR AUSTRAILIA 4980V00D25B Supporter, PRESS SECC T2.0 EGI CHASSIS FRONT(PRESS) 3550V00594A Cover, MOLD HIPS 405AF 56DC1D-UC HIPS 405AF Lamp Side 341-242F Holder, MOLD ABS POWER CODE 3210V00165A Cover, MOLD HIPS FRAME HIPS 40AF RN-48SZ40 SMPS CHASSIS 48149K0046A Plate, PRESS SPTE T0.5 TOP 232.3*49*142.9,0.5T DC1 MODEL...

  • Page 34: Replacement Parts List

    REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION IC2600 0IPMG00049A AZ1117H-1.8TR/E1[H13A] 3.2TO10V 1.8V IC2604 0IPMG00049A AZ1117H-1.8TR/E1[H13A] 3.2TO10V 1.8V 0IZZ9G0003A X1272-5103 TEXAS INSTRUMENTS CLGA 203 IC2700 0IPRP00687A EPM570T144C5N 3TO3.6V_2.375TO2.625V_1 0IPRPTO002A TC7S14F 2TO6V 0.001mA SCHMITT TRIGGER IC2900 0IMCRTH002A THC63LVD103 3.0TO3.6 1W TQFP TR 64P IC100...
  • Page 35 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 36 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 37 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 38 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 39 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 40 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 41 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 42 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 43 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 44 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 45 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 46 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 47 LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION 6631V20033M GIL-S-03 GIL-S-03 800mM 2.00MM 3P UL1 P4501 6630B00075A SW-1166M-40P 40P 2.54MM ANGLE MALE DI 6631V25032L GIL-G-3S-S3C2 GIL-M-3S-S2C2 700mM 2.5 P4502 6630B00075A SW-1166M-40P 40P 2.54MM ANGLE MALE DI 6631V25051P GIL-G-4S-S3C2 GIL-M-4S-S2C2 1000mM 2. P4503 366-922L GIL-G-12P-S3L2-E 12P 2.50MM 1R ANGLE...
  • Page 48 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 49 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 50 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 51 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 52 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 53 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 54 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 55 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 56 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 57 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 58 For Capacitor & Resistors, CC, CX, CK, CN : Ceramic RD : Carbon Film the charactors at 2nd and 3rd CQ : Polyestor RS : Metal Oxide Film digit in the P/No. means as CE : Electrolytic RN : Metal Film follows;...
  • Page 59 The components identified by shading and mark are critical for safety. Replace only with part number specified. LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION L876 125-123A BFD3565R2F 160OHM 10X3.5X9MM RADIAL ACCESSORIES L877 125-123A BFD3565R2F 160OHM 10X3.5X9MM RADIAL L878 125-123A BFD3565R2F 160OHM 10X3.5X9MM RADIAL...
  • Page 63 IC501...
  • Page 64 Control...

  • Page 66: Svc. Sheet

    SVC. SHEET : EBY32382101-S1 SVC. SHEET : EBY32382101-S2 SVC. SHEET : EBY32382101-S3...
  • Page 67 Jul., 2006 P/NO : 38289S0052A Printed in Korea...

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