Chassis Introduction - THOMSON 32FS6646 Service Training Manual

1. Chassis Introduction

This chassis is designed for European LCD TV with MPEG4. The main chip is
from MediaTek (MT5362 series). the MediaTek MT5362 series is a backend
decoder and a TV controller and offers high integration for advanced applications.
It combines a transport de-multiplexer, a high definition video decoder, an AC3
audio decoder, a dual-link LVDS transmitter, and an NTSC/PAL/SECAM TV
decoder with a 3D comb filter (NTSC/PAL).
The MT5362 series supports most Full-HD video decoder standards, including
H.264, MPEG4, MPEG2 and JPEG. The MT5362 series also supports MediaTek
MDDiTM de-interlace solution can reach very smooth picture quality for motions.
A 3D comb filter added to the TV decoder recovers great details for still pictures.
The special color processing technology provides natural, deep colors and true
studio quality video. Also, the MT5362 series has built-in high resolution and
high-quality audio codec.
The MT5362 series enables true single chip experience. It integrates high-quality
HDMI1.3, high speed VGA ADC, dual-channel LVDS, USB2.0 receiver and
multi-media decoder.
For DTV demodulation, the chip MT8295BNE is a companion chip combined with
MT5362 DVB serial chips to enable Common Interface (CI/CI+) function. It
supports DVB compliant Conditional Access Module (CAM) and PCMCIA type
memory cards. A NAND-flash-like or SPI-like bus bridge is built-in to perform the
communication between the host and the card through the Host Interface.
MT8295BNE supports one parallel or two serial or one parallel + one serial
MPEG2 transport stream (TS) inputs (2 x Host TS Input) from the front-end
demodulator or TS storage and a serial MPEG2 transport stream output (Host TS
Output) to MT5362 MPEG2 decoder.
The chassis is a high performance and fully integrated IC for multi-function LCD
TV with resolution up to full HD (1920X1080) and vertical frame up to 120Hz.
Also it's a analogue/digital 2 in 1 TV receiver.
ATV System: PAL B/G D/K I, SECAM B/G D/K L/L
DTV System: DVB-T, DVB-C
This chassis includes 4 circuit assembly boards: main board, power board, key
board and IR board.
There are two kinds of power supply solution on this chassis, PWE4210 is for 40
and 46 inch TV, PWE3210 is for 32 inch TV.
PWE4210 outputs following voltages:
3.3VSB/0.2A is for standby power supply, 24V/1.0A is for main board, 24V/4.5A is
for inverter board.
PWE3210 outputs following voltages:
3.3VSB/0.2A is for standby power supply, 24V/3.5A is for main board and inverter
board.
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