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Vizio VF550XVT1A Service Manual
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Vizio VF550XVT1A Service Manual

Lcd tv monitor 55''
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Service Manual

Model #: LCD TV Monitor 55''
VF550XVT1A
(LGD_LC550WUD-SBA1)
V, Inc
320A Kalmus Drive Costa Mesa, CA 92626
TEL : +714-668-0588 FAX :+714-668-9099
Top Confidential

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Summary of Contents for Vizio VF550XVT1A

  • Page 1: Service Manual

    Service Manual Model #: LCD TV Monitor 55'' VF550XVT1A (LGD_LC550WUD-SBA1) V, Inc 320A Kalmus Drive Costa Mesa, CA 92626 TEL : +714-668-0588 FAX :+714-668-9099 Top Confidential...
  • Page 2 7. Theory of Circuit Operation 8. Waveforms 9. Trouble Shooting 10. Block Diagram 10-1 11. Spare parts list 11-1 12. Complete Parts List 12-1 Appendix 1. Main Board Circuit Diagram 2. Main Board PCB Layout 3. Assembly Explosion Drawing VIZIO VF550XVT1A Service Manual...
  • Page 3 Use a power cable that is properly grounded. Always use the AC cords as follows – USA (UL); Canada (CSA); Germany (VDE); Switzerland (SEV); Britain (BASEC/BS); Japan (Electric Appliance Control Act); or an AC cord that meets the local safety standards. VIZIO VF550XVT1A Service Manual...

  • Page 4: Chapter 1 Features

    Chapter 1 Features 1. Built in TV channel selector for TV viewing. 2. Simultaneous display of PC and TV images. 3. Connectable to PC’s analog RGB port. 4. Built in S-video, HDTV, composite video, HDMI and TV out. 5. Built in auto adjust function for automatic adjacent of screen display. 6.
  • Page 5 Chapter 2 Specification 1. TFT-LCD CHARACTERISTICS Model Name: LGD LC550WUD-SBA1 (Vendor: LG. Philips LCD Co., Ltd) Display Size: 54.64 inches (1387.80mm) diagonal Outline Dimension: 1286.0 mm (H) x 745.0 mm (V) x 60.0 mm (D) (Typ.) Pixel Pitch: 0.630mm x 0.630mm x RGB Pixel Format: 1920 horiz.
  • Page 6 5. Speaker Built in Speakers: 15W X 2 , 2 way, 6. ENVIRONMENT Operating Temperature: 0c~35c (Ambient) Operating Humidity: 20%~80% RH (No condensation) Non-Operating : 0~40,000 ft 7. DIMENSIONS (Physical dimension) Dimensions with stand ： 1307.5mm(W) x 912.5mm(H) x 342.5mm(D) ：...
  • Page 7 (4). When fixed patterns are displayed for a long time, remnant image is likely to occur. (5). Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be done by system manufacturers. Grounding and shielding methods may be important to minimized the interference.

  • Page 8: Operation Menu

    Chapter 3 On Screen Display On Screen Display (OSD) is a friendly interface providing the function adjusting in our system. Customers could operate it only by few buttons. There is the introduction of the OSD. Main unit button MENU CH ▲ ↑...
  • Page 9 PICTURE 1-7-7 Smooth Motion 1-7-7-1 Smooth Motion Effect(Off/Low/Middle/High) 1-7-7-2 Real Cinema Mode(Off/Precision/Smooth) 1-7-7-3 Smooth Motion Demo Reset Picture Mode Auto Adjust Backlight(0~100) Brightness(0~100) Contrast(0~100) Color 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) H-Size(0~255) H-Position(0~100) V-Position(0~100) Fine Tune(0~31) AUDIO Audio Mode(Flat, Rock, Pop, Classic, Jazz)
  • Page 10 CHANNEL Tuner Mode(Cable, Antenna) Auto Search Partial Channel Search 3-3-1 Scan Mode (Analog, Digital, Analog/ Digital) 3-3-2 From Channel (1~135) 3-3-3 To Channel (1~135) Skip Channel MTS(ATV：Mono/Stereo/Sap；DTV：Language1/Language2/Language3) Time Zone(Eastern, Indiana, Central, Mountain, Arizona, Newfoundland, Pacific, Alaska, Hawaii, Atlantic) Daylight Saving(On, Off) SETUP Language(English, Francais, Espanol) 4-2-1...
  • Page 11 SETUP 4-7-1 H-Position (0~64) 4-7-2 V-Position (0~32) 4-7-3 H-Size(0~100) 4-7-4 V-Size(0~100) Parental 4-8-1 Rating Enable(On, Off) 4-8-2 Channel Block 4-8-3 US TV Rating 4-8-3-1 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...
  • Page 12 SETUP 4-8-8 Block Unrated TV (Yes/No) 4-8-9 Access Code Edit 4-8-9-1 4-8-9-2 Confirm 4-10 System Reset [INFO] “INFO” button could show an information bar which displays the information about the input signal on our LCD TV. Page 3-5 CONFIDENTIAL – DO NOT COPY File No.
  • Page 13 Chapter 9 Trouble shooting MONITOR DISPLAY NOTHING (PC MODE) Start Is Power board output +5VSB (F1)? Is J1 connector of MB good? LED is lighted Is DC-DC OK? (Orangegreen) Is U22 pin2 (+3V3SB) working ok? It is in power saving 1.
  • Page 14 (TV, AV VIDEO1,2, S-VIDEO) IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check DVD player 1. Check P14 signal 2. Check signal between P14 and U13 (IF AV1 mode) U13 input correct? 3. Check Tuner & U13 (IF TV mode) 4.
  • Page 15 (COMPONENT1) IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check host’s setting 1. Check signal from P15 2. Check system power 12V& 5V(5VSB) P15 input correct? 1. Check signal between U13 & P3 or P15 2. Check Y1 Clock (60MHZ) U13 input correct? 1.
  • Page 16 (COMPONENT2 & VEDIO 2) IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check host’s setting 1. Check P20 connect (MB) 2. Check system power 12V& 5V(5VSB) P20 input correct? 1. Check signal between U13 & P20 2.
  • Page 17 (HDMI 2,3,1 )IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check host’s setting 1. Check P19&P17&P18 connect U13 no data out ? 2. Check the pin18 & 19. 3. Check the pin 6 of U62 & U63 & U64 1.
  • Page 18 (HDMI 4, 5) IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check host’s setting 1. Check P8 & P9 connect (MB) U13 no data out ? 2. Check the pin10 & 11 of P16 (MB) 3. Check the pin 6 of & U11 & U7 1.
  • Page 19 TROUBLE OF DC-DC CONVERTER Start The voltage is about + 5V(+5VSB) 1. Check power board J1 PIN10,11,12 2. Check power cable, F1 & connection J1 3. Check U22 pin1 (+5VSB) & pin2 (+3V3SB) The voltage is about + 12V while power switch on 1.
  • Page 20 TROUBLE OF EDID READING Start Support DDC1/2B 1. Analog cable ok? Is Analog DDC OK? 2 .Check signal (U31 to U43) 3. Check U31 Voltage 4. Is protocol compliant? Support DDC1/2B 1. Analog cable ok? 2. Check signal (U59 to P18) Is HDMI DDC OK? 3.