Akira LCT-17CHST Bedienungsanleitung

LCD TV

Service Manual

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Model No.: LCT17CHST.doc

Version: 1.0

MODEL:

LCT-17CHST

CHASSIS

INFO: LS-07

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Model No.: LCT17CHST.doc

Version: 1.0

CONTENTS

SAFETY PRECAUTION .............................................................................................................4

MAIN FEATURE .........................................................................................................................6

ELECTRIC CIRCUIT ..................................................................................................................9

MAIN ICs FUNCTION...............................................................................................................10

SYMPTOMS & CORRECTION ................................................................................................24

LIST OF BREAKABLE & MAINTENANCE PARTS ..................................................................25

FACTORY MODE .....................................................................................................................26

EXPLODED VIEW....................................................................................................................27

WIRING DIAGRAM...................................................................................................................28

CIRCUIT DIAGRAM .................................................................................................................29

WALL-MOUNTING BRACKET INSTALLATION GUIDE ..........................................................36

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IMPORTANT SAFETY PRECAUTION

Model No.: LCT17CHST.doc

Version: 1.0

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Model No.: LCT17CHST.doc

Version: 1.0

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Model No.: LCT17CHST.doc

Version: 1.0

MAIN FEATURE

RF input ,CATV function

Capable to receive the full append cable programs in 470MHZ, can

store 100 programs (Program number display 0～99);

AV Audio and AV Video input

In SCART mode, the system can automatically activate SCART

checking function to identify signal input modes(CVBS or RGB) and

input signal character(16:9 or 4:3); Capable to receive PAL, NTSC,

SECAM color systems; Very convenient to watch VCR (video

cassette recorder), Pickup Camera and other Disc’s programs.

YPbPr input

Can receive high definition YPbPr component video signal from

such as DVD Conveniently . Support format:480I、480P、576I、576P、

720P（50/60HZ）、1080I（50/60HZ）、1080P（50/60HZ）；

VGA input

As the Terminal display Equipments of computer, it can connect with

computer conveniently. it can connect with Computer audio card by

its own Audio connection line ,so you can listen the audio

information from computer.

Program lock and child lock function

The function of program lock can lock the programs、input password

and Modification, the function of child lock can lock the keys.

Timer function

You can set turn on and turn off on time, and power off in 15 min

automatically if no signal input. Automatically enter into save energy

mode by itself if no signal in PC condition, it can be awaken if signal

inputs.

Blue screen mute noise

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Model No.: LCT17CHST.doc

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In condition of TV、AV、RGB and YPbPr, gentle blue screen will be

displayed if no signal input.

Chinese/English menu

Adopt the design of Convenient and Simple graphic menu, you can

operate menu more conveniently and more intuition.

Save energy function(power management mode)

When TV is used as PC display terminal, and PC has no output

signal . The TV will be power off in about 30 Seconds automatically,

and enter into standby condition. press down Power/P+/P-/ Number

key of Remote control or the PC signal appearance again, the TV

will be on automatically.

Plug-and-play

The TV works as the terminal Equipments of computer, need not

equip install software，it is real Plug-and-Play.

Automatic correct

By its automatic correct function ,the LCD TV can bring you the best

view.

No Flicker、no Radiation 、Green environmental protection

Because of it’s Advanced power Management mode, the TV can

realize standby and recall on function.

ACI function ( Auto channel Installation ).

Stereo and digital accompanying sound processing.

Auto identify and demodulate IGR, and decode NICAM digital

accompanying sound.

Zoom image function

Support follow zoom function: Full screen mode、4:3 mode（16:9

TFT）,16:9（4：3 TFT）、Movie mode、Sub-title movie mode.

Light weight、small dimension、Low power consumption

Advanced picture quality Strengthen function

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Model No.: LCT17CHST.doc

Version: 1.0

Dynamic skin color Correct: Improve distort color in picture, make it

Near to real color.

Black level Extension: blacken the more black area of picture, Raise

the contrast in Dark Background.

Color Edge correct: Increase the Steep of color signal edge ,make

the edge of color Transition more clearly .

Brightness edge correct: increase the steep of Brightness signal

edge, make the edge of picture is more clearly.

Super fine and inner fairness TFT

10-page teletext storage

Dynamic comb filter

Headphones output

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Model No.: LCT17CHST.doc

Version: 1.0

ELECTRIC CIRCUIT

The LS07 chassis LCD TV is composed of steady voltage circuit、inverter Circuit 、RF circuit、video Strengthen circuit、video

Processing circuit、Power Enlarge circuit、VGA circuit、system control circuit and key control circuit. The block diagram of circuit

Constitute as below:

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Model No.: LCT17CHST.doc

Version: 1.0

MAIN ICs FUNCTION INTRODUCTION

GENERAL INTRODUCTION

No. Name Model Main Function

1 A1 TAF5-E2I21RW2 RF tuner

2 U8、U21 TDA1517AWT Audio amplifier

3 U3 MST518 AD converter and format change

4 U2 UOC(TDA15021H) Video decode and MCU control

5 Q9 Si2311DS MOS switch

6 U11、U12 IRF7316 MOS switch

7 U19 NTMS10P02 MOS switch

8 U23 LM2596-5.0 Liner voltage IC

9 U1 24LC21A EEPROM(save display parameter

information)

10 U4 24LC32A

EEPROM（save user control information）

11 U6、U20 PI5V330A Video switch

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