Akai LTA-26C902 Manual de usuario

www.akai.ru

Models:

LTA-26C902

LTA-32C902

LTA-37C902

Energy Saving Mode if there is no signal input.

●Multi Language On-Screen Display menu

Ordinary and graphical user interface makes the menu operation more user-friendly

●Power Energy Saving Mode (power management mode)

In PC mode, the LCD TV will automatically power off within 30 seconds and enter into the Power

Energy Saving Mode if there is no VGA signal input. It will automatically exit from the Power Energy

Saving Mode and work again when it received a valid VGA signal or press any button on the

panel/remote control.

●Plug and Play

It is no need to equip any installation software when the product is used as computer terminal display

equipment

●Legerity, convenience, low power consumption

●Digital Photo Album Function(Only for CHD-W260F8P/CHD-W270F8P/ CHD-W320F8P/

CHD-W370F8P)

●Built-in DVD Module（Only for CHD-TD260F8 /CHD-TD270F8/CHD-TD320F8/CHD-TD370F8）

⑴Entirely Compatible to DVD、SVCD、VCD、CD、MP3

⑵Compatible to PAL/NTSC Discs

⑶High quality digital audio coaxial input enable you to feel as if sit in the theatre with the perfect classical

hi-fidelity experience

⑷Automatically delete unsuitable parts according to the chosen play levels (max.8 )(only for DVD discs

with play level control)

⑸As many as 32 subtitles

⑹As many as 8 audios

Unit IC Compositions：

LS08 chassis LCD TV is mainly composed of regulator IC、RF IC、video processor IC、Power Amplify

IC、Analog Video IC、System Control IC and Key Control IC, see this IC frame as below:

PCB Assembly：

It is mainly composed of TV Board、Remote Control Receiver(Signal Receiver) 、Side AV Board、

K Board and Main Board. Hereunder function introduction to every PCB Assembly：

Numbe

r Parts Description

1 Main Board

Assembly

It is the core of signal processing for LCD TV, which takes responsibility of

transforming outer signal into the uniform digital signal identified by LCD display

with use of System Control IC. TV and AV signals input from TV Board are

decoded by UOCIII to transport RGB signal which is to be transformed by

TDA8759 modulus to transport 24bit RGB digital signal, then it is to be

transformed by GM1601/GM1501 to produce LVDS signal displayed on the

screen, in addition, signals input from VGA、DVI would directly enter into

GM1501 procedure 、format transformation and on screen display.

2 TV Board

Assembly

It is mainly composed of two tuners (main and sub tuners) 、AV/S 、HD signal

terminals and some peripheral processing IC. The main tuner demodulates RF

signal to IF signal, and the sub tuner produces CVBS signal, all signals are sent to

the main board after transfer.

3 Remote

Control

Receiver

Assembly

is composed of one indicator light and one remote control receiver, which enable

Users operate the TV conveniently and know its current working status simply with

a remote control..

4 Built-in Power

Board

Assembly

It can transform AC 220V into DC for ICs, including +24V，+12V，+5V and +5VS

power supply in standby mode.

5 K Board

Assembly

It consists of 7 function buttons by which users can operate the TV freely.

6 Screen

Assembly

Screens for LS08 have the built-in adverse transformer which change DC into high

voltage AC signal to lighten the back light; The LCD screen is used to display the

image after the image signal has been processed by the main board.

7 Side AV Board It is used for earphone output, AV input, S input

CHAPTER TWO MAIN ICs FUNCTION INTRODUCTION

GENERAL INTRODUCTION:

TV Board

Number Location Type Main Function

1 UT1 TMI4-C22P2RW Audio and image intermediate frequency signal

output

2 UT2 TAD5-C2IP1RW Sub picture CVBS signal output

Main Board

3 U302，U303 24LC21A T/SN EEPROM

4 U701 24LC32A T/SN Buffer

5 U306,U307,UA3 FSAV330QSCX Switch selection

6 K201 K7262N Audio surface filter

7 K202 K9352N Audio surface filter

8 U6 TPA3002D2PHPR Audio amplifier

9 U801 AM29LV800DT-70EC

Flash，control program inside

10 U700 GM1501-BD Video processor

11 U201 TDA15063H-N1B06557 AV decoder

12 U402 SAA7115HL/V1 Sub channel video decoder

13 U305 SM5302AS-G-ET High definition signal filter

14 U400 TDA8759HV/8/C1 Video signal modulus transformer

15 U5 TDA9178T/N1 Video signal picture amendment

16 U600 MT46V2M32LG-4 Frame buffer

.ICs FUNCTION INTRODUCTION IN DETAILS

Main Tuner (TMI4-C22P2RW)

Pin Definition Description

1 AGC Auto gain control

2 UT NC

3 ADD Ground

4 SCL IIC bus (Clock)

5 SDA IIC bus (Data)

6 NC NC

7 +5V Power supply

8 NC NC

9 30V To produce 0~30V tune voltage

10 NC NC

11 IF Intermediate frequency TV signal

Intermediate frequency TV signal

Sub Tuner (TAD5-C2IP1RW):

Pin Definition Description

1 AGC Auto gain control

2 NC NC

3 ADD Ground

4 SCL IIC bus (Clock)

5 SDA IIC bus (Data)

6 NC NC

7 +5V Power supply

8 NC NC

9 33V To produce 0~30V tune voltage

10 NC NC

11 IF Intermediate frequency output (NC)

12 IF Intermediate frequency output (NC)

13 SW0 Band control

14 SW1 Band control

15 NC NC

16 SIF NC

17 AGC Auto gain control

18 VEDIO CVBS signal output

19 +5V Power supply

20 AUDIO NC

GM1501

GM1501is a kind of processing chassis for dual channels image and video, which is mainly used for

LCD displays and integrative TV products. With the resolution of WUXGA, it not only supports PIP

technique, but possesses some IC functions applied to image catch 、process and clock display. It

integrates high velocity AD converter, PLL, high reliability DVI receiver, X86 series miccontrol and LCDS

inverter. See the features as below:

Main Features

●High quality image zoom function;

●Analog RGB signal input interface;

●Intelligent output signal auto identification;

●Integrated high-power PLL output;

●High-reliable self-adaptive DVI input interface;

●4:4:4/4:2:2/CCR656/601 8/16/24bit digital video interface;

●Embedded IC for adjustments of gain、contrast、brightness、color saturation、hue and fleshtone;

●Efficiency in reducing EMI electromagnetism inference;

●Inclined grain processing with small angle;

●High quality video processing;

●Programmable output format;

●Embedded LVDS transport;

●Advanced OSD;

●Embedded micro controller

Pin Description :

Pin Name Description

Analog Signal Input Port

L3 AVSYNC ADC vertical synchronization signal input

L4 AHSYNC ADC horizontal synchronization signal input

N2 VGA-SCL VGA lock input

N1 VGA-SDA VGA digital input

D1、D2 RED+、RED- Red analog signal input

C3 SOG Green synchronization signal

C1、C2 GREEN+、- Green analog signal input

B1、B2 BLUE+、BLUE- Blue analog signal input

A2,B3,E3,D3 ADC3.3 ADC3.3Vpower supply

A3，A4 ADC1.8 ADC1.8Vpower supply

A5，B4 ADC-DGND ADC digital ground

C4，D4，E1，E2，E4 ADC-AGND ADC analog ground

DVI Input Output Port

N4 DVI-SCL DDC interface , serial clock signal

N3 DVI-SDA DDC interface ，serial data signal

A6，B6 RXC+，RXC- DVI clock input signal

A8～A10

B8～B10

RX0+～RX2+

RX0-～RX2-

DVI input port

B11 REXT Exterior exit resistance

C6～C11 DVI-3.3 DVI 3.3V power supply

D6、D8～D10 DVI-1.8 DVI 1.8V power supply

A7,A11,B5,B7,C7,D7

D11

DVI-GND DVI ground

Low Bandwidth ADC Port

C13 LBADC-33 ADC3.3Vpower supply

A12，B12，C12 LBADC_IN1～

LBADC_IN3

ADC analog input channel

D12 LBADC_RETURN Channel analog ground

D13 LBADC-GND Power supply voltage analog ground

OCM IC Port

AA1~AA3,Y1~Y3,

W1~W3,V1~V4,

U1~U4,T1~T3

OCMADDR0～

OCMADDR19

Address input output port

AB1~AB3,AC1~AC3,

AD1~AD4,AE1~AE3,

AF1~AF3

OCMDATA0~

OCMDATA15

Data input output port

OCM Port Control Signal

R1，T4，P1，P2 ROM_CSn~

ROM_CS2n

Part selection signal

R2 OCM_REn Read enable signal

R3 OCM_WEn Write enable signal

OCM_INT2

OCM_INT1

Interrupt

M1 OCM_UDO OCM data output

M2 OCM_UDI OCM data input

D25 OCM_TIMER1 OCM timer input

Standard Definition Video Control Port

D16 SVCLK SV pels clock input

C14 SVHSYNC SV horizontal synchronization signal input

B14 SVVSYNC SV vertical synchronization signal input

A14 SVODD Scan status input

A17 SVDV SV data input

Standard Definition Video Data Port

D14,D15,A15,A16,

B15,B16,C15,C16

SVDATA7~

SVDATA0

SV ITU656 data input

Video Control Port

A20 VCLK Video pels clock signal

D19 VHS_CSYNC Video horizontal synchronization signal input

C20 VVS Video vertical synchronization signal input

B20 VODD Scan status input

D20 VDV (VSOG) Video data input

B17 VCLAMP Video clamp enable output

A21,A22,A23,B21,

B22,C21,C22,D21

VGRN7~ VGRN0 Green signal or Y signal input

C17,C18,C19,A18

A19,B18,B19,D18

VRED7~ VRED0

Red signal or V/Cr/Pr signal input

B23,B24,B25,A24

A25,C23,C24,D24

VBLU7~ VBLU0

Blue signal or U/Cb/Pb signal input

Screen Control Port

A26 PPWR Screen power control

B26 PBIAS Screen bias control

D26，C25，C26 PWM2 ~PWM0 Pulse width modulation output

AC7 DCLK Pels clock output

AC16 OEXTR Connect external LVDS bias resistance

LVDS Port

AE14~AE16,AE19~

AE23,AF13~AF16

AF19~AF23,AF11

A0-~A3-, A0+~A3+

B0-~B3-, B0+~B3+

Low voltage difference data input

AD14,AD11,AE13

AE11,AC11,AF10

LVDS_SHIELD[5] ~

LVDS_SHIELD[0]

Low voltage difference protect output

AE12,AF12,

AF20,AE20

AC+,AC-,BC+,BC- Low voltage difference protect input

Screen Port Power Supply

AD12,AD13,AC12 LVDSB_3.3 LVDS B channel power supply

AC13,AC14,AC15 LVDSB_GND B channel ground

AC20,AC21,AC22 LVDSA_3.3 LVDS A channel power supply

AD19,AC19,AC20 LVDSA_GND A channel ground

AE17 VDDD33_LVDS Analog power supply

AD17 VSSD33_LVDS Analog ground

Clock Composite and Power Supply

G4 XTAL crystal oscillator interface

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