Related Manuals for LG 32LG50D
Summary of Contents for LG 32LG50D
- Page 1 Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LE81D MODEL : 32LG50D 32LG50D-HD CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Page 2: Table Of Contents
CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................13 BLOCK DIAGRAM.................. 17 EXPLODED VIEW .................. 18 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.
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Page 6: Specification
SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification is applied to LE81D chassis. (1) Performance : LGE TV test method followed (2) Demanded other specification Safety : CE, IEC Specification 2. - Page 7 4. Component Video Input (Y, P Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I) 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 720*480 31.47 59.94 27.000 SDTV 480P 720*480 31.50 60.00 27.027...
- Page 8 6. HDMI Input (PC) Resolution H-freq.(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark 720*400 31.468 70.08 28.32 640*480 31.469 59.94 25.17 VESA(VGA) 640*480 37.500 75.00 31.50 VESA(VGA) 800*600 37.879 60.31 40.00 VESA(SVGA) 800*600 46.875 75.00 49.50 VESA(SVGA) 1024*768 48.363 60.00 65.00 VESA(XGA) 1024*768 56.476 70.06...
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Page 9: Adjustment Instruction
This spec. sheet is applied to Hong Kong DTV manufactured mode. at LG TV Plant all over the world. 2) Input the Video Signal: 100% Color Bar signal into AV 3) Set the PSM to Vivid mode in the Picture menu. - Page 10 - Blcok 2 (128 byte) model name for Diagnostics of DTV Mode. Note) Option Data [Tool Option 1 / Tool Option 2 / Area Option] Singapore : 32LG50D-HD [20996 / 0 / 1] 5. EDID * Caution 1) Use the proper signal cable for EDID Download...
- Page 11 Brightness : High Light : MIN 200 Cd/m (32 WXGA, LPL) Model LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 Color-Coordinate : High Light : Cool : X ; 0.276 ±0.002 ,Y ; 0.283 ±0.002 e, f) Checksum: Changeable by total EDID data.
- Page 12 6.2. Auto white Balance (INNER PATTERN) command1 command2 Set ID Data MODE Input Select DTV-Air Cable RF-Air Cable COMP1 COMP1 RGB-PC HDMI INIT R-Gain_Normal G-Gain_Normal B-Gain_Normal R-Gain_Warm G-Gain_Warm B-Gain_Warm R-Gain_Cool G-Gain_Cool B-Gain_Cool R-Offset_Normal G-Offset_Normal B-Offset_Normal R-Offset_Warm G-Offset_Warm B-Offset_Warm R-Offset_Cool G-Offset_Cool B-Offset_Cool COLOR TEMP.
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Page 13: Troubleshooting
TROUBLESHOOTING 1. 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 14 2. No Raster (1) Symptom 1) No OSD and image occur at screen. 2) It maintains the condition where the front LED is blue. (2) Procedure check Is the all of the output voltage Is the Inverter on? Replace the Power board. normal except for stand-by 5V? Replace the Module.
- Page 15 3. In case of no display on the screen in specific modes (1) Symptom - There is no screen display from a specific input mode. (RF, AV, Component, RGB, HDMI) (2) Procedure check - Check the all input mode have normal display. (3) In case of an unusual display in RF mode Are the Input voltage, IIC Communication Is the Tuner normal?
- Page 16 4. 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 Is the speaker on? all input(modes)? on in menu. Is there no sound Download Is the speaker cable...
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Page 17: Block Diagram
BLOCK DIAGRAM - 17 -... -
Page 18: Exploded View
EXPLODED VIEW - 18 -... - Page 19 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 20 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 21 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 22 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 23 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 24 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 25 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 26 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 27 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 28 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 29 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 30 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 31 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 32 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 33 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 34 May, 2008 P/NO : MFL42619802 Printed in Korea...