Amtran LC420WUH-SBR1-7R1 Service Manual

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Service Manual

Model #: VL420M_LGD_

LC420WUH-SBR1-7R1

(T42USVZB1RE4.VL420M1)

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 LC420WUH-SBR1-7R1

Page 1 Service Manual Model #: VL420M_LGD_ LC420WUH-SBR1-7R1 (T42USVZB1RE4.VL420M1) 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 VL420M_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. Simulatnueous 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 LC420WUH-SBA1 (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: 230W Power OFF: to less than 0.5W MAX (at 120 Vac) 5. Speaker Built in Speakers: 6Ω/10W (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 (4) Be careful for condensation at sudden temperature change. Condensation makes damage to polarizer or electrical contacted parts. And after fading condensation, smearor spot will occur. (5) When fixed patterns are displayed for a long time, remnant image is likely to occur.
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 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) Equalizer a-1 120Hz a-2 500Hz a-3 1.5 KHz a-4 5 KHz a-5 10KHz Balance(-50~+50) SRS TSHD (On/Off) SRS TruVolume (On/Off) Digital Audio Out(PCM, Off, Dolby Digital) Speakers(On/Off) Analog Audio Out(Fixed, Variable) Lip Sync(0~5) Reset Audio Mod C.
Page 12 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. Wide ( Zoom1,Zoom2, Full, Stretch, Normal, Panoramic ) e.
Page 13 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 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. Contrast(0~100) e.
Page 14 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. 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.
Page 15 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： Language(English ,Espanol, Francais) 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) Sleep Timer(Off, 30Minutes, 60Minutes, 90Minutes, 120Minutes) Wide (Zoom1, Zoom2, Full, Stretch, Normal, Panoramic) Input Naming H/V Position f-1.H-Position(0~64) f-2.V-Position(0~32) f-3.H-size(0~100)
Page 17 d. Contrast(0~100) e. Color(0~100) Tint(-32~+32) g. Sharpness(0~7) h. 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.
Page 18 C. SETUP： Language(English,Espanol, Francais) 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) Sleep Timer(Off, 30Minutes, 60Minutes, 90Minutes, 120Minutes) Wide (Zoom1, Zoom2, Full, Stretch, Normal, Panoramic) 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)
Page 19 System Reset i-1. Setup Wizard i-2. Reset All Setting Multi-Media : Picture Mode a. Slideshow Mode b. Slideshow With Music c. Music File Browser d. Audio Mode e. Repeat Sort By g. Duration h. Slideshow Effect Thumbnail Size Info Music Mode a.
Page 20 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 21 (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 22 (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 23 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 24 TROUBLE OF DC-DC CONVERTER Start The voltage is 5VSB 1. Check power board 2. Check power cable connection J1 PIN10,11,12 The voltage is +12V while power switch on 1. J1 connection good J1 PIN 2,3,4 2. Check power board The voltage is +5V while power U1 pin 5 6 7 8 switch on 1.
Page 25 TROUBLE OF DDC READING Start Support DDC1/2B 1. VGA cable ok? 2. Check signal (U35 to P13) Analog DDC OK? 3. Check U35 Voltage 4. Is compliant protocol? Support DDC1/2B HDMIDDC OK? 1. HDMI cable ok? 2. Check signal (U17 to P7) 3.
Page 26 (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? Check MT5392 audio out ,R604 & R605 Check signal correct? 1.

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