Gateway 46" PTV Manual

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Service Training of 46” PTV

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PDP Whole Components

•

•MODULE

MODULE

There are

There are 1

1 pc.

pc. panel

panel and

and 10

10 pc.s

pc.s PCB

PCB

including

including 2

2 pc.s

pc.s X/Y Sustainer board

X/Y Sustainer board、

、4

4 pc.s

pc.s

X/Y extension board

X/Y extension board、

、2

2 pc.s

pc.s W PCB

W PCB、

、1

1 pc.

pc.

DIF

DIF and

and 1

1 pc.

pc. Power board in the Module.

Power board in the Module.

•

•SET

SET

There are

There are 1

1pc. Surface Filter and 9 pc.s PCBs

pc. Surface Filter and 9 pc.s PCBs

including 1 pc. Audio board

including 1 pc. Audio board、

、1

1 pc. VIF board

pc. VIF board、

、1

1 pc.

pc.

Power Line Filter

Power Line Filter、

、1

1 pc. Keypad board

pc. Keypad board、

、1

1 pc.

pc.

Receiver board

Receiver board、

、2

2 pc.s L/R Speakers and 1 pc.

pc.s L/R Speakers and 1 pc.

Video board ,1 pc. Tuner board in the SET.

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Easy maintenance of Plasma Display

Parts position

Y- FPC

Extension

board

(upper and

lower)

Tuner

DIF Board

Audio Board

X-Sustainer

X- FPC

Extension

board(upper

and lower)

Speaker

W- FPC Extension board

(left and right)

Ac Line filter VIF

Y-Sustainer Power Supply

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Easy maintenance of Plasma Display

Block diagram of system

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Easy maintenance of Plasma Display

PCB function

1.Power：(1).Input voltage:AC 110V〜240V、47Hz〜63Hz.

Input range:90V(Min)〜265V(Max) auto regulation.

(2).To provide power for PCBs.

2.VIF(Video InterFace)：To converter TV signals, S signals、AV signals、PC signals

and D-SUB signals to digital ones and to transmit to DIF.

3.DIF(Digital InterFace)：Dealing with the digital signal for output to panel.

4.X-Sustainer / Y-Sustainer：(1). Receiving the signals from DIF and high

voltage supply.

(2). Output scanning waveform for Module.

5.X / Y-FPC extension board：Receive signal from X / Y sustainer, output

horizontal scanning waveform to the panel.

6.W-COF extension board：Output addressing signals.

7.Audio Board：Amplifying the audio signal to the internal or external

speakers of which selected.

8.TV tuner board : To convert TV RF signal to video and audio signal to VIF board.

Audio output to the Audio board.

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Easy maintenance of Plasma Display

Basic operation of Plasma Display

1. After turning on power switch, power board sends Vsby +5V Volt to Micro Processor

IC waiting for ON signals from Key Switch or Remote Receiver.

2. When the ON signal from Key Switch or Remote Receiver is detected，Micro

Processor will send ON Control signals to Power. Then Power sends volts(Vs、Vxg、

Vw、Vf、Vdd、Vcc and +9V)to PCBs working. This time VIF will send signals to

display back light 、OSD on the panel and start to search available signal sources. If

the audio signals input，them will be amplified by Audio AMP and transmitted to

Speakers.

3. If some abnormal signals are detected（for example:over volts、over current、over

temperature and under volts），the system will be shut down by Power off.

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VIF Board

VIF System Structure

ADC

Converter

TMDS

Receiver

De_

Interlace

Video

Decoder

Scalar

Chip Output

to DIF

D-SUB

DVI

Y/Cb/Cr

Micro_Controller

Composite

S-Video

Tuner

First To a 3D Y/C

separating IC

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VIF System Block Diagram

ADC Converter : AD9888 KS

The AD9888 is a complete 8 bit , 205 MSPS monolithic analog

interface optimized for capturing RGB graphics signals. Its 205 MSPS

encode rate capability and full-power analog bandwidth of 500 MHz

supports resolutions up to UXGA(1600 x1200 @ 75 Hz).

TMDS Receiver: SIL151ACT100

The Sil153BCT100 receiver uses Panel Link Digital technology to

support high resolution displays up to SXGA(25MHz~112MHz) . The Sil153B

receiver supports up to true color panels (24 bit/pixel, 16.7M colors) in 1 or

2 pixels/clock mode. In addition , the receiver data output is time staggered

to reduce ground bounce that affects EMI.

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VIF System Block Diagram

VIDEO Decoder:SAA7118E

The SAA7118E decoder is a ADC, too. But it can deal with the ordinary TV

signals. The SAA7118E can be input Composite 、S-video 、Component

signals and its outputs are digital Y(Luminance) , C(Chromaticity) signals.

And it also can adjust brightness , contrast , saturation , hue .

De-interlace:SIL504CM208

The Sil504 transfer interlacing signals into progressive signals. The

advantage of progressive signals is that the scanning rate doubling to let the

screen more stable and non-flickering. Besides, the sources of input may have

24 0r 30 or 25 frames per sec, so the de-interlaced chip shall tell from the

differences and processing the signals. The basic function of de-interlaced IC

is to combine the odd and even sub-frames to a frame , and the processing

needs a memory IC(SDRAM) to store these signals for processing . For the

improving the quality of image sake , more and more TVs or DVD players all

have the functions of progressive scanning.

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VIF System Block Diagram

Image Processor Chip:PW171-20U(system on chip)

Image Processor chip:

PW171-20U(system on chip)

◎Scaling function :

The Image scalars provide high quality up and down image scaling . For the applications of

VIF , the input signals could be VGA , SVGA , XGA formats , and its output fixed at 852 x 480

@60 HZ . For example , SVGA format:800 x 600 @75Hz , first scaling down : Horizontal

800Î640、Vertical 600Î480 , 75 frames / sec after frame rate conversion become 60 frames per

sec. Then scaling up 640Î852 , to accomplish the scaling function.

◎Micro Processor Function :

This chip includes microprocessor(on-chip 80x86) ; selectable function and I/O interface control .

With 3 groups of 8-bit programmable I/O , 1 group of RS-232 communication port , IR decoder

,timer and a PWM generator

◎OSD Function :

The on-screen-display(OSD) can be used for startup screens , menus , and

scribble functions

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