Vizio VO420E - 42" LCD TV Service Manual Download

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Service Manual

AMTRAN TECHNOLOGY CO., LTD.

17F, NO. 268, Lien Chen Rd., Chung Ho City Taipei County, Taiwan, 235 R.O.C.

TEL : (02) 8228-0505 FAX : (02) 8228-0599

Confidential Document, Property of AmTRAN CO. LTD

Model #: VO420E

LGD_LC420WUG-SBR1-7R1

(T42USVZB1RF-.VO420E1)

Summary of Contents for VO420E - 42" LCD TV

Page 1: ...ECHNOLOGY CO LTD 17F NO 268 Lien Chen Rd Chung Ho City Taipei County Taiwan 235 R O C TEL 02 8228 0505 FAX 02 8228 0599 Confidential Document Property of AmTRAN CO LTD Model VO420E LGD_LC420WUG SBR1 7...

Page 2: ...1 4 Factory Preset Timings 4 1 5 Pin Assignment 5 1 6 Main Board I O Connections 6 1 7 Theory of Circuit Operation 7 1 8 Waveforms 8 1 9 Trouble Shooting 9 1 10 Block Diagram 10 1 11 Spare parts list...

Page 3: ...ications However there is no guarantee that the interference will not occur in a particular installation If this equipment does cause unacceptable interference to radio or television reception which c...

Page 4: ...o line out Audio optical out 5 Built in auto adjust function for automatic adjustment of screen display 6 Smoothing function enables display of smooth texts and graphics even if image with resolution...

Page 5: ...le CR 10 Viewing angle free R L 178 Typ U D 178 Typ Power Consumption Total 166 8 W Typ Logic 6 8 W Back Light 160W with Inverter Control PCB Weight 11 0Kg Typ Display Mode Transmissive mode Normally...

Page 6: ...tress is not applied to the module And the case on which a module is mounted should have sufficient strength so that external force is not transmitted directly to the module 3 Please attach the surfac...

Page 7: ...hoot voltage 2 Response time depends on the temperature In lower temperature it becomes longer 3 Brightness depends on the temperature In lower temperature it becomes lower And in lower temperature re...

Page 8: ...not come in contact with any other object It is recommended that they be stored in the container in which they were shipped 9 6 Handling Precautions for Protection Film 1 The protection film is attac...

Page 9: ...2 32 g Sharpness 0 7 h Advanced Video h 1 Noise Reduction Off Low Medium Strong h 2 Color Enhancement Normal Rich Color Green Flesh Green Blue Off h 3 Advanced Adaptive Luma Off Low Medium Strong Exte...

Page 10: ...On Off h Channel Info D Setup a Language English Francais Espanol b Sleep Timer Off 30 Minutes 60 Minutes 90 Minutes 120 Minutes c Wide Zoom1 Zoom2 Panoramic Normal d Input Naming AV1 AV2 Comp1 Comp2...

Page 11: ...just Run b Backlight 0 100 c Brightness 0 100 d Contrast 0 100 e Color Temperature Custom 6500 9300 e 1 Custom Red 0 255 Green 0 255 Blue 0 255 f H size 0 255 g H Position 0 100 h V Position 0 100 i F...

Page 12: ...0 d Contrast 0 100 e Color 0 100 f Tint 32 32 g Sharpness 0 7 h Advanced Video h 1 Noise Reduction Off Low Medium Strong h 2 Color Enhancement Normal Rich Color Green Flesh Green Blue Off h 3 Advanced...

Page 13: ...ces AV1 AV2 COMPONENT1 COMPONENT2 A Picture a Picture Mode Custom Standard Movie Game Vivid Football Golf Basketball Baseball b Backlight 0 100 c Brightness 0 100 d Contrast 0 100 e Color 0 100 f Tint...

Page 14: ...2 HDMI3 e CC Off CC1 CC2 CC3 CC4 f CC On Mute Off On g Digital CC Style g 1 Caption Style Custom As Broadcaster Custom g 2 Font Size Large Small Medium g 3 Font Color white Green Blue Red Cyan Yellow...

Page 15: ...onnector good 3 Is DC to DC OK 4 Is U1 5V working ok LED is lighting It is in power saving 1 Check video cable 2 Is the timing supported 3 Check sync input 4 Check VGA SOG rout if analog SOG Is backli...

Page 16: ...ignal good 1 Check video 2 Check DVD player U12 input correct 1 Check VIDEO signal 2 Check signal between U12 IF IN AV mode LVDS output correct 1 Check U12 DV33 DV10 AV33 AV12 2 Check Y1 is OK 1 Check...

Page 17: ...d 1 Check video 2 Check host s setting P2 input correct 1 Check signal between P2 2 Check power 12V 5v U13 input correct 1 Check signal between U14 P1 2 Check U13 Clock 60MHZ 3 Check U13 DV33 DV10 AV3...

Page 18: ...s Yes N0 N0 Yes Yes HDMI IS NOT DISPLAY CORRECTLY Input signal good Start 1 Check video 2 Check host s setting U12 no data out 1 Check U12 power 2 Check between signal U12 3 Check U12 clock 60MHZ 1 Is...

Page 19: ...Yes Yes Yes Yes Yes Yes N0 N0 N0 N0 N0 N0 N0 Yes TROUBLE OF DC DC CONVERTER Start J4 PIN10 11 12 J4 PIN 2 3 4 The voltage is 5VSB 1 Check power board 2 Check power cable connection J4 U1 pin 5 6 7 8 U...

Page 20: ...DDC READING Start Analog DDC OK Support DDC1 2B 1 VGA cable ok 2 Check signal U22 to P1 3 Check U22 Voltage 4 Is compliant protocol HDMIDDC OK Support DDC1 2B 1 HDMI cable ok 2 Check signal U19 to P9...

Page 21: ...s Yes TV_SIDE AUDIO IS NOT DISPLAY CORRECTLY Start Input signal good 1 Check Audio source 2 Check the player of source Input correct 1 Check signal of Main Board 2 Check amplifier J5 Check amplifier O...

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