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LG 32LC4D-ZA Service Manual
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LG 32LC4D-ZA Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LD73A
MODEL : 32LC4D
MODEL :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
32LC45
32LC46
R
website:http://biz.LGservice.com
32LC4D-ZA
32LC45-ZA
32LC46-ZC

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Summary of Contents for LG 32LC4D-ZA

  • Page 1 LCD TV SERVICE MANUAL CHASSIS : LD73A MODEL : 32LC4D 32LC4D-ZA MODEL : 32LC45 32LC45-ZA MODEL : 32LC46 32LC46-ZC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................22 EXPLODED VIEW .................. 24 REPLACEMENT PARTS LIST ............... 26 SVC. SHEET ....................- 2 -...

  • Page 3: Product Safety

    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 Shock, Fire, or other Hazards.
  • Page 4 SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.

  • Page 6: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. General Specification(TV) Item Specification Remark Video input applicable system PAL-D/K, B/G, I, SECAM Receivable Broadcasting System 1) PAL/SECAM BG EU(PAL Market) 2) PAL/SECAM DK 3) PAL I/I 4) SECAM L/L' 5) DVB-T RF Input Channel...
  • Page 7 3. Optical Feature(LCD Module-LPL) Item Specification Min. Typ. Max. Remark Viewing Angle [CR>10] R/L, U/D 178, 178 Luminance Luminance(cd/m 32” Variation MAX/MIN Contrast Ratio CR(32") All White/All Black (With)(32") 1200 1600 All White/All Black CIE Color Coordinates White 0.285 LPL(26”) -0.03 0.293 +0.03...
  • Page 8 7. HDMI DTV Mode Table Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remark Proposed 640X480 31.50 59.94 25.175 SDTV 480p 60Hz 640X480 31.50 25.20 SDTV 480p 60Hz 720X480 31.47 59.94 27.00 SDTV 480p 60Hz 720X480 31.47 27.027 SDTV 480p 60Hz 720X576 31.25 50.00 27.000 SDTV 576p 50Hz...

  • Page 9: Adjustment Instruction

    [Channel Download] => [Write Batch]. This spec. sheet is applied to all of the LD73A chassis Next, select proper binary file(*.bin) including the CH manufactured at LG TV Plant all over the world. information for each model at [Channel Download] => [NVRAM File].
  • Page 10 Digital : 3 Nome di modello Dait(Hex) 26LC4D-ZA 000000FC0032364C4334442D5A410A202020 26LC7D-ZA 000000FC0032364C4337442D5A410A202020 4.2. Data 32LC4D-ZA 000000FC0033374C4334442D5A410A202020 (1) ANALOG (128 bytes) 32LC7D-ZA 000000FC0033324C4337442D5A410A202020 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F 37LC4D-ZA 000000FC0033374C4334442D5A410A202020 0x00 0...
  • Page 11 * Before AV ADC Calibration, should be executed the “Tool option 1” 6. ADC Calibration 5. Select method of Tool option 1 RF/AV/S-VIDEO Component RGB-PC MSPG925F PALJ Model:215 (720P) Model: 3 1) Press ADJ Key in the Adjust remote control. 2) Select “Tool option 1”...
  • Page 12 6.3 Adjustment of RGB (1) Required Equipments - Remote controller for adjustment - MSPG-925F Pattern Generator (Which has XGA [1024*768] 60Hz 8 Color Bar pattern shown in Fig. 1) (2) Method of Auto RGB Color Balance 1) Input the PC 1024x768@60Hz 100% Color Bar pattern <Fig.
  • Page 13 8. Set information(Serial No & Model name) (1) Setting up like bottom figure (After setting white balance, this is set) 1) Press ADJ Key in the Adjust remocon. 2) Select “System Control 2” by using (CH+/-) key, and press (ENTER). 3) Using Adjust remocon, RS-232 Host &...

  • Page 14: Troubleshooting

    TROUBLESHOOTING 1. Power Board 1-1. The full flowchart for the voltage output Start check Is it Is the Interface Does the whole identical to when the signal operating? screen appear? power is off? 1. Check the Power Off 2. Check the Interface status.
  • Page 15 2. No Power (1) Symptom 1) Does not minute discharge at module. 2) Non does not come into the front LED. (2) Procedure check Is the power cord plugged in? Plug in the power cord. Is the Line Filter and Power Connect the Cable.
  • Page 16 3. Protect Mode (1) Symptom 1) After lighting up once, it does not discharge minutely from module. 2) The rely falls.(there is an audible “click”) 3) The color of the front LED turns from green to red. (2) Procedure check Is the Power Board Is the output Low/High voltage normal Replace the Power Board.
  • Page 17 4. No Raster (1) Symptom 1) No OSD and image occur at screen. 2) It maintains the condition where the front LED is green. (2) Procedure check Is the Low/High output Does minute discharge Replace the Power Is the VAVS on? At Module? voltage normal except for board...
  • Page 18 5. In case of strange screen display in specific modes 5-1. In case of no OSD display (1) Symptom 1) LED is green. 2) The minute discharge is continuously accomplished from the module. (2) Procedure check Is the LVDS cable Is the LVDS cable Replace the cable.
  • Page 19 5-2. In case there is no display on the screen in specific modes (1) Symptom 1) There is no screen display from a specific input mode (RF, AV, Component, RGB, DVI). (2) Procedure check 1) Check the all input modes have normal display. 2) Check the video(main)/ data(sub), video(main)/ video(sub) have normal displays from the PIP mode or DW mode(re-check it/ swap).
  • Page 20 (5) In case of an unusual display in Component, RGB mode Are the R,G,B input and H,V Check the input source Sync of the J1100 normal? Same as Block A (6) In case of an unusual display in HDMI mode Is the HDMI002(IC1004) Are Input voltage, IIC Communication Replace the IC.
  • Page 21 6. In case of no sound (1) Symptom 1) LED is Green. 2) Screen display appears but there is no sound. (2) Procedure check Is there no sound for Set on speaker on in Is the speaker on? All input(modes)? menu.

  • Page 22: Block Diagram

    BLOCK DIAGRAM - 22 -...
  • Page 23 MEMO - 23 -...

  • Page 24: Exploded View

    EXPLODED VIEW - 24 -...
  • Page 25 P/No : EBY36717302(1/4) 2007.01.26...

  • Page 26: Replacement Parts List

    P/No : EBY36717302(2/4) 2007.01.26...
  • Page 27 P/No : EBY36717302(3/4) 2007.01.26...
  • Page 28 Mar., 2007 P/NO : MFL36695305 Printed in Korea...

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