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Amtran LC420WUF-SBM1 Service Manual

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Service Manual

Model #: VIZIO SV421XVT_LGD_
LC420WUF-SBM1
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

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Summary of Contents for Amtran LC420WUF-SBM1

  • Page 1: Service Manual

    Service Manual Model #: VIZIO SV421XVT_LGD_ LC420WUF-SBM1 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...
  • Page 2 Table of Contents CONTENTS PAGE Sections 1. Features 2. Specifications 3. On Screen Display 4. Factory Preset Timings 5. Pin Assignment 6. Main Board I/O Connections 7. Theory of Circuit Operation 8. Waveforms 9. Trouble Shooting 10. Block Diagram 10-1 11.
  • Page 3 Service Manual SV421XVT_LGD COPYRIGHT © 2000 V, INC. ALL RIGHTS RESERVED. IBM and IBM products are registered trademarks of International Business Machines Corporation. Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc. VINC and VINC products are registered trademarks of V, Inc. VESA, EDID, DPMS and DDC are registered trademarks of Video Electronics Standards Association (VESA).
  • Page 4 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 HDTV, S-video, composite video, HDMI, ATV and DTV, Audio line out, Audio optical out.
  • Page 5 Chapter 2 Specification 1. TFT-LCD CHARACTERISTICS Model Name: LPL LC420WUF-SBM1 (Vendor: LG. Philips LCD Co., Ltd) Item Specification Active Screen Size 42.02 inch (1067.31mm) diagonal Outline Dimension 983.0(H) x 576.0(V) x 46.0mm(D)(Typ.) Pixel Pitch 0.4845 mm x 0.4845 mm Pixel Format 1920 horiz.
  • Page 6 4. POWER SUPPLY Input Voltage Level: 100~240 Vac, 50/ 60 Hz Power Consumption: 231.5W MAX Power OFF: to less than 0.5W MAX (at 120 Vac) 5. SPEAKER Built in Speakers:8Ω/15W (max) X 2 way. 6. ENVIRONMENT Operating Temperature: 5c~35c (Ambient) Operating Humidity: Ta= 35 °C, 90%RH(Non-condensing) Operating Altitude: 0 - 14,000 ft Non-Operating : 4000 ft...
  • Page 7 (3) Please attach the surface transparent protective plate to the surface in order to protect the polarizer. Transparent protective plate should have sufficient strength in order to the resist external force. (4) You should adopt radiation structure to satisfy the temperature specification.
  • Page 8 (5) When fixed patterns are displayed for a long time, remnant image is likely to occur. (6) 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 9 9-6. Handling Precautions for Protection Film (1) The protection film is attached to the bezel with a small masking tape. When the protection film is peeled off, static electricity is generated between the film and polarizer. This should be peeled off slowly and carefully by people who are electrically grounded and with well ion- blown equipment or in such a condition, etc.

  • Page 10: On Screen Display

    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 Power MENU CH ▲...
  • Page 11 B. AUDIO： Audio Mode(Flat, Rock, Pop, Classic, Jazz) a. Equalizer a-1 120Hz a-2 500Hz a-3 1.5 KHz a-4 5 KHz a-5 10KHz b. Balance(-50~+50) c. SRS TSHD (On/Off) d. SRS TruVolume (On/Off) e. Digital Audio Out(PCM, Off, Dolby Digital) f. Speakers(On/Off) g.
  • Page 12 k-6. Signal Strength: D. SETUP： a. Language(English, Espanol, Francais) b. PIP b-1: PIP Mode (Off, PIP, POP) b-2: PIP Source(TV,…) b-3: PIP Position(TL,…, BR) b-4: Size(Small, Medium, Large) b-5: Audio Source (Main or PIP) c. Sleep Timer(Off, 30Minutes, 60Minutes, 90Minutes, 120Minutes) d.

  • Page 13: Rgb Mode

    i. System Info i-1. Model Name: i-2. Version i-3. Revision i-4. Source Type i-5. Resolution i-6. V.Freq i-7. Progressive j. System Reset j-1. Setup Wizard j-2. Reset All Setting RGB Mode A. PICTURE： a. Auto Adjust b. Backlight(0~100) c. Brightness(0~100) d.
  • Page 14 d. SRS TruVolume (On/Off) e. Digital Audio Out(PCM, Off, Dolby Digital) f. Speakers(On/Off) g. Analog Audio Out(Fixed, Variable) h. Lip Sync(0~5) i. Reset Audio Mode C. SETUP： a. Language(English, Espanol, Francais) b. PIP b-1. PIP Mode (Off, PIP, POP) b-2. PIP Source(TV,…) b-3.

  • Page 15: Hdmi Mode

    HDMI MODE A. PICTURE： Picture Mode(Custom, Standard, Movie, Game, Vivid, Football, Golf, Basketball, Baseball) a. Backlight(0~100) b. Brightness(0~100) c. Contrast(0~100) d. Color(0~100) e. Tint(-32~+32) f. Sharpness(0~7) g. Advanced Video g-1. Noise Reduction(Off, Low, Medium, Strong) g-2. Color Enhancement(Off, Normal, Rich Color, Green/Flesh, Green/Blue) g-3.
  • Page 16 C. SETUP： a. Language(English ,Espanol, Francais) b. PIP b-1.PIP Mode (Off, PIP, POP) b-2.PIP Source(TV,…) b-3.PIP Position(TL,…, BR) b-4.Size(Small, Medium, Large) b-5.Audio Source (Main or PIP) c. Sleep Timer(Off, 30Minutes, 60Minutes, 90Minutes, 120Minutes) d. Wide (Zoom1, Zoom2, Full, Stretch, Normal, Panoramic) e.
  • Page 17 Color(0~100) Tint(-32~+32) Sharpness(0~7) Advanced Video h-1. Noise Reduction(Off, Low, Medium, Strong) h-2. Color Enhancement(Off, Normal, Rich Color, Green/Flesh, Green/Blue) h-3. Advanced Adaptive Luma(Off, Low, Medium, Strong, Extend) h-4. Backlight Control (Off, DCR, OPC) h-5. Color Temperature h-6. Smooth Motion h-7. Film Mode (Auto/Off) h-8.
  • Page 18 b-3.PIP Position(TL,…, BR) b-4.Size(Small, Medium, Large) b-5.Audio Source (Main or PIP) c. Sleep Timer(Off, 30Minutes, 60Minutes, 90Minutes, 120Minutes) d. Wide (Zoom1, Zoom2, Full, Stretch, Normal, Panoramic) e. Input Naming H/V Position f-1.H-Position(0~64) f-2.V-Position(0~32) f-3.H-size(0~100) f-4.V-size(0~100) g. Parental g-1.Rating Enable(On/Off) g-2.Channel Block g-3.US TV Rating g-4.US Movie Rating g-5.
  • Page 19 Chapter 9 Trouble shooting MONITOR DISPLAY NOTHING (PC MODE) Start Is Power board output +5VSB &+12? LED is lighted Is J1 connector good? Is DC to DC OK? Is U1 (+5V) working ok? It is in power saving 1. Check video cable 2.
  • Page 20 (TV, COMPOSITE ,VIDEO ) IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check DVD player 1. Check VIDEO signal 2. Check signal between U11 (IF IN U11 input correct? AV mode) 1. Check U11 :DV33&DV10&AV33&AV12 U11 output correct? 2.
  • Page 21 (COMPONENT) IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check host’s setting 1. Check signal between P5 P5 input correct? 2. Check power 12V& 5V 1. Check signal between U14&P1 2. Check U11 Clock (27MHZ) U11 input correct? 3.
  • Page 22 HDMI ) IS NOT DISPLAY CORRECTLY Start 1. Check video Input signal good? 2. Check host’s setting 1. Check U11 power 2. Check between signals U11 U11 no data out ? 3. Check U11 clock 27MHZ 1. Is J9 & J10 connected good? 2.
  • Page 23 TROUBLE OF DC-DC CONVERTER Start The voltage is 5VSB 1. Check power board 2. Check power cable J1 PIN10,11,12 connection The voltage is +12V while J1 PIN 2,3,4 power switch on 1. J1 connection good 2. Check power board The voltage is +5V while power U1 pin 5 6 7 8 switch on 1.
  • Page 24 TROUBLE OF DDC READING Start Support DDC1/2B Analog DDC OK? 1. VGA cable ok? 2. Check signal (U35 to P13) 3. Check U35 Voltage 4. Is compliant protocol? Support DDC1/2B 1. HDMI cable ok? 2. Check signal (U17 to P7) HDMIDDC OK? 3.
  • Page 25 (TV_SIDE, AUDIO) IS NOT DISPLAY CORRECTLY Start 1. Check Audio source Input signal good? 2. Check the player of source 1. Check signal of Main Board 2. Check amplifier (J11) Input correct? 1.Check MT5392 audio out ,R604 & R605 Check signal correct? 1.

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