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CONFIDENTIAL – DO NOT COPY

 

Page 9-8

 

File No. SG-292

 

N0 

Yes

Yes

N0 

 

 

TROUBLE

 

OF

 

EDID

 

READING 

 

 

 

 

 

Start 

Is Analog DDC OK? 

Support DDC1/2B 
1. Analog cable ok? 
2 .Check signal (U31 to U43) 
3. Check U31 Voltage 
4. Is protocol compliant? 

Is HDMI DDC OK? 

Support DDC1/2B 
1. Analog cable ok? 
2. Check signal (U59 to P18) 
3. Check signal (U57 to P19) 
4. Check signal (U58 to P17) 
5. Check signal (U33 to P8) 
6. Check signal (U25 to P9) 
7. Is protocol compliant?

END 

Содержание VF550XVT1A - 55" LCD TV

Страница 1: ...Service Manual V Inc 320A Kalmus Drive Costa Mesa CA 92626 TEL 714 668 0588 FAX 714 668 9099 Top Confidential Model LCD TV Monitor 55 VF550XVT1A LGD_LC550WUD SBA1...

Страница 2: ...y 3 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 l...

Страница 3: ...o communications 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...

Страница 4: ...y 6 High quality 1920X1080 pixel by pixel display 7 Smoothing function enables display of smooth texts and graphics even if image with resolution lower than 1920X1080 is magnified 8 Advanced video fun...

Страница 5: ...re treatment of the front polarizer Haze 10 2 TFT LCD OPTICAL CHARACTERISTICS Contrast ratio 1400 Typ _ LGD LC550WUD SBA1 Surface Luminance White 500 cd m2 Typ Luminance Variation 1 3 Max Response Tim...

Страница 6: ...e pay attention to the followings when you use this TFT LCD module 1 OPERATING PRECAUTIONS 1 The spike noise causes the mis operation of circuits It should be lower than following voltage V 200mV Over...

Страница 7: ...l darkness may happen during 3 5 minutes when LCM is operated initially in condition that luminance is under 40 at low temperature under 5 This phenomenon which disappears naturally after 3 5 minutes...

Страница 8: ...ovie Game Vivid Football Golf Basketball Baseball 1 1 Backlight 0 100 1 2 Brightness 0 100 1 3 Contrast 0 100 1 4 Color 0 100 1 5 Tint 32 32 1 6 Sharpness 0 7 1 7 Advanced Video 1 7 1 Noise Reduction...

Страница 9: ...r Temperature 1 5 1 Color Temperature 6500 9300 Custom 1 5 2 Red 0 255 1 5 3 Green 0 255 1 5 4 Blue 0 255 1 6 H Size 0 255 1 7 H Position 0 100 1 8 V Position 0 100 1 9 Fine Tune 0 31 AUDIO 2 0 Audio...

Страница 10: ...tion TL BR 4 2 4 PIP Size Small Medium Large 4 2 5 Audio Source Main or PIP 4 3 Sleep Timer Off 30Minutes 60Minutes 90Minutes 120Minutes 4 4 Wide DTV Wide Zoom Stretch Others Wide Zoom Panoramic Norma...

Страница 11: ...TV Y All 4 8 3 2 TV Y7 All FV 4 8 3 3 TV G All 4 8 3 4 TV PG All D L S V 4 8 3 5 TV 14 All D L S V 4 8 3 6 TV MA All L S V 4 8 4 US Movie Rating 4 8 4 1 G 4 8 4 2 PG 4 8 4 3 PG 13 4 8 4 4 R 4 8 4 5 N...

Страница 12: ...ile No SG 0292 SETUP 4 8 8 Block Unrated TV Yes No 4 8 9 Access Code Edit 4 8 9 1 New 4 8 9 2 Confirm 4 10 System Reset INFO INFO button could show an information bar which displays the information ab...

Страница 13: ...VSB F1 2 Is J1 connector of MB good 3 Is DC DC OK 4 Is U22 pin2 3V3SB 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...

Страница 14: ...eck DVD player U13 input correct 1 Check P14 signal 2 Check signal between P14 and U13 IF AV1 mode 3 Check Tuner U13 IF TV mode 4 Check P15 IF AV2 mode 5 Check U13 POWER 3 3V LVDS output correct 1 Che...

Страница 15: ...Check video 2 Check host s setting P15 input correct 1 Check signal from P15 2 Check system power 12V 5V 5VSB U13 input correct 1 Check signal between U13 P3 or P15 2 Check Y1 Clock 60MHZ Is LVDS outp...

Страница 16: ...good 1 Check video 2 Check host s setting P20 input correct 1 Check P20 connect MB 2 Check system power 12V 5V 5VSB U13 input correct 1 Check signal between U13 P20 2 Check Y1 Clock 60MHZ Is LVDS outp...

Страница 17: ...2 3 1 IS NOT DISPLAY CORRECTLY Input signal good Start 1 Check video 2 Check host s setting 1 Check P19 P17 P18 connect 2 Check the pin18 19 3 Check the pin 6 of U62 U63 U64 U13 no data out 1 Is J12...

Страница 18: ...I 4 5 IS NOT DISPLAY CORRECTLY Input signal good Start 1 Check video 2 Check host s setting 1 Check P8 P9 connect MB 2 Check the pin10 11 of P16 MB 3 Check the pin 6 of U11 U7 U13 no data out 1 Is J12...

Страница 19: ...3V 3V3SB 3 Check power board 4 Check F2 U51 pin 5 6 7 8 The voltage is about 5V while power switch on 1 Check F1 U51 2 Check OPWRSB R19 3 Check U51 pin1 2 or pin 3 4 should have 1V more U15 The voltag...

Страница 20: ...Support DDC1 2B 1 Analog cable ok 2 Check signal U31 to U43 3 Check U31 Voltage 4 Is protocol compliant Is HDMI DDC OK Support DDC1 2B 1 Analog cable ok 2 Check signal U59 to P18 3 Check signal U57 t...

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