BBK LT1504S Service Manual Download Page 22 | Manualshive

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HDMI/DVI

RGB/Audio L/R

Composite/Audio L/R

S-video/Audio L/R

Compoment/Audio L/R

VIDEO/AUDIO

Composite /SIF

7. Block Diagram

U12

HDM

I

VGA

AV

S-video

YPbPr

TV

SCART

U9

MST97885LD/96885LD

PANEL

1024*768

U2

Audio amp

U8

Earphone

AMP

U7

DDR

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Summary of Contents for LT1504S

Page 1: ...LT1504S Service Manual ...

Page 2: ...ty Notices 1 2 Specification 2 3 Front Panel Function Control Description 8 4 Adjusting Procedure 13 5 Trouble Shooting Flow Chart 16 6 Exploded Diagram and Spare Parts List 19 7 Block Diagram 20 8 Schematic Diagram 21 9 PCB Layout Diagrams 31 ...

Page 3: ...t the plug into the outlet contact your electrician to replace your obsolete outlet Do not defeat the purpose of the grounding type plug 11 Pay attention to the code which connects with apheliotropism board of inside panel and don t hook it 12 Do not allow anything to rest on the power cord Do not locate this product where persons will walk on the cord 13 If an extension cord is used with this pro...

Page 4: ...Normally white Brightness 250 cd m2 typical Contrast Ratio 400 1 typical Brightness Uniformity 75 min Viewing Angle 120 H 100 V at CR 10 Color Chromaticity CIE White x 0 313 y 0 329 typical Frame Rate 60Hz Response Time 16ms typical Surface Treatment Hard Coating 3H Anti glare Haze 25 INPUT Source Connector types Inputs Outputs Signals Video Format OSD Main TV Analog TV PAL SECAM PH Type TV CABLE ...

Page 5: ...nput output SCART 21pin VIDEO3 SCART IN YPbPr Component Y Pb Cb Pr Cr L R Audio 480i 576i 480p 576p 720p 1080i RCAx3 RCAx2 Red White VIDEO4 YPbPr PC VGA VGA IN PC AUDIO IN Analog RGB VGA 15 Pin VIDEO5 VGA IN AC IN Power Switch AC Power IN AC 100 240V YC14 AC IN Note A SCART connector B VGA Connector ...

Page 6: ...B Analog Level Impedance 0 7Vp p 75Ω DDC 1 2B Compliant with Revision 1 0 Sync H V separate 3V TTL level 1kΩ Frequency Fh 31 80 kHz Fv 56 76 Hz Maximum Pixel Clock 135 Mhz Connector Mini VGA 15 pin female x 1 Video Composite CVBS Signal Format NTSC 4 43NTSC PAL_M PAL B G H D N SECAM Level Impedance 1 0Vp p 75Ω S Video Y C Signal Format Y C Level Impedance Y 1 0Vp p 75Ω C 286 mV 75Ω Analog HD15 Vid...

Page 7: ...48 07 50 SVGA 800x600 75 46 9 49 5 XGA 1024x768 60 48 36 65 0 XGA 1024x768 70 56 47 75 XGA 1024x768 75 60 02 78 75 SXGA 1280x1024 60 64 108 Video S Video AV Timing STANDARD RESOLUTION V FREQ Hz H FREQ kHz CLK MHz NTSC 525 60 15 734 12 65 PAL B G H D I 625 50 15 625 14 50 SECAM 625 50 15 625 14 50 4 43NTSC 525 60 15 734 12 65 HDTV Component AV Timing SDTV 480p 720x480 60 31 461 27 SDTV 480i 720x480...

Page 8: ... 8 Ohm Signal Connector Pin Assignment Pin Assignment Pin Assignment Pin Assignment 1 Red 6 Red Ground 11 Ground 2 Green 7 Green Gro und 12 SDA 3 Blue 8 Blue Ground 13 Horizontal Sy 4 Ground 9 Not Connected 14 Vertical Sync 5 Self Test 10 Sync Ground 15 SCL ...

Page 9: ...7 3 Front Panel Function Control Description Operation Adjust and Programming ...

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Page 13: ... f to select the color Temperature to be User Warm or Cool User Live Pop Sound mode Rock Press e fto change Sound Mode to be User Live POP and Rock Volume Press e fto adjust the Volume from 0 to 100 Base Press e fto change the Bass from 0 to 100 Treble Press e fto change the Treble from 0 to 100 Balance Press e fto adjust the Balance from 0 to 100 Audio setup Mute Press e fto adjust the Mute on or...

Page 14: ...ou to adjust the position of the picture left and right in the window Press VOLUME to adjust the Sharpness from 0 to 100 V Position Allows you to adjust the position of the picture left and right in the window Press VOLUME to adjust the Sharpness from 0 to 100 Clock AControls the width of the picture based on the VGA mode VGA setup Phase Allows you to improve focus clarity and image stability Pres...

Page 15: ... G B and adjust the Color Temp of white image to be x 295 20 y 305 20 Y 200 cd m2 c cool Brightness and Contrast 50 Select the cool to enter the adjustment option of R G B Automatically adjust the value of R G B and adjust the Color Temp of white image to be x 281 20 y 288 20 Y 200 cd m2 TV mode test Factory TV signal or TV signal generator Output PAL signal Check if the picture is normally displa...

Page 16: ... or approved equipment Play DVD test disc VIDEO ESSENTIALS A 1 Set DVD to interlaced output z Select SOURCE then choose S VIDEO z Sending the signal from DVD test disc sixth paragraph z Switch DVD output mode from NTSCand PAL Watch the screen to check if has switch NTSC PAL 480P 480i switch DVD Component Cable or TVSignalGENERTO R FLUKE 54200 or approved equipment Play DVD test disc VIDEO ESSENTIA...

Page 17: ... z Press to set balance z The default is 50 e Mute z Press to set balance z The default is off Surround Mode DVD VCD plays music or DVD disc z Press to set ON OFF z Check if the sound has change z The default is OFF NICAM GENERTOR FLUKE 54200 or approved equipment z Press I II button on the remote z Check if the sound has change Super Freq test Pattern Generator VGA Cable z Check if OSD displays s...

Page 18: ...ON OFF switch LED Color change Check KEY LED board J7 LCD TV ON Check Video Audio Function Make sure the LVDS connection of LCD Panel is fine U16 Pin3 High Check the A D board tuner U16 Pin3 Check Inverter Power 24V of LCD Panel OK B Display Check Video Audio Function A Check AC Socket Change AC Socket Fuse or power board C Change AD Board ...

Page 19: ...YES YES NO B U16 PIN5 Active low See Panel SPEC Change the LCD Panel Display Check Video Audio Function Change AD Board A Check the connection of Signal cable Display Check Video Audio Function Change AD Board Change AD Board ...

Page 20: ...3 OK OK OK NG NG No TV VIDEO and VGA Picture Change AD Board No Audio Change Speaker Check A D board J4 Check Speaker Check Video Audio Function Change AD Board or U2 Check Video Audio Function Check Video Audio Function OK C ...

Page 21: ...19 6 Exploded Diagram and Spare Parts List ...

Page 22: ...dio L R Composite Audio L R S video Audio L R Compoment Audio L R VIDEO AUDIO Composite SIF 7 Block Diagram U12 HDMI VGA AV S video YPbPr TV SCART U9 MST97885LD 96885LD PANEL 1024 768 U2 Audio amp U8 Earphone AMP U7 DDR ...

Page 23: ...21 8 Schematic Diagram ...

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Page 33: ...32 9 PCB Layout Diagram Keypad Board Component Side Top Keypad Board Component Side Bottom IR LED Board Component Side Top IR LED Board Component Side Bottom ...

Page 34: ...33 Main Board Component Side Top ...

Page 35: ...34 Main Board Component Side buttom ...

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