Thomson 32FS6646, 40FS6646L Schematic
SER VICE TRAINING MANUAL
1
CHASSIS MT62S
CONTENTS
1. Chassis Introduction…………………………………………………….................2
2. Product Specification………………………………………………………………..3
3. Main Bo ard Picture Introd uction……………………… …………………… ………5
4. Flow Diagram
4.1 Block Diagram…………………………………………………………………..7
4.2 Power Supply Flow Diagram……………………………………………… ….8
2
4.3 I
5. Key Circuit and Key Test Point s and W ave shape Introduction…………………9
6. Alignment Procedure………………………………………………………………29
7. Project ID List………………………………………………………………………43
8. Trouble Shooting…………………………………………………………………...44
9. Key Spare Parts List……………………………………………………………….50
10. Main Board Schematic Diagram
10.1 MT5362 GPIO Definition……………………………………………...........51
10.2 Sammary................................................................................................52
10.3 Schematic Diagram...............................................................................53
11. Power Supply Schematic Diagram
PWE4210.......................................................................................................74
PWE3210.......................................................................................................75
12. Exploded View
32FS6646…………………………………………………………………………..76
40FD6646…………………………………………………………………………..77
46FS6646…………………………………………………………………………..78
Chairman of t h e C om p ilation Committee ：Shawn Zhang
Member of the Compilation Committee ： Yong Liu, Binhong Chen, Zengxun Shi, Zheng Y ang,
Simba Yao, Proton Sun, Welbur Chen, Ivan Zhang
Chief Editor : Paul Su
Executive Editor ：Welbur Chen, Zengxun Shi
C BUS Flow Diagram………………………………………………………...9
1. Chassis Introduction
2
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.
2. Product S peci fication
3
Item Feature 32FS6646 40FS6646 46FS6646
TypeClassification LargeScreen LargeScreen LargeScreen
SetLevel
PanelLevel
FrontEnd+
Digital
requirement
Picture
Sound
Feature
Sizes 32W 40W 46W
Chassisplatform MT62S MT62S MT62S
Styling P11 P11 P11
PanelType AUOT315HW05V0 SECLTA400HF16 SECLTA460HJ09
Backlight LED LED LED
Resolution FHD FHD FHD
60Hz/120Hz 120Hz 120Hz 120Hz
ContrastRatio Suppliertospecify Suppliertospecify Suppliertospecify
Brightness400nitsorLess400nitsorLess400nitsorLess
ViewAngle Suppliertospecify Suppliertospecify Suppliertospecify
Antireflexcoated
glass
DynamicContrast Yes Yes Yes
Lightsensor Yes Yes Yes
BacklightControl Yes Yes Yes
Analogue/Digital 2in1 2in1 2in1
MPEG2 Yes Yes Yes
MPEG4 Yes Yes Yes
DVB‐T/T2/C
frontend
CI(PCMCIA) Yes Yes Yes
CI+ Yes Yes Yes
OAD Yes Yes Yes
DVBTCVBSoutput Yes Yes Yes
CombFilter 3D 3D 3D
De‐interlacing 3D 3D 3D
SoundOutput 2X5W 2X5W 2X8W
NoofSpeakers 2 2 2
Mono/Stereo/BBE Stereo Stereo Stereo
MEMC YES YES YES
Teletext Teletext1.5 Teletext1.5 Teletext1.5
Noof
pages(Teletext)
HDVideoPlayback Yes Yes Yes
MP3Playback Yes Yes Yes
Photoviewer Yes Yes Yes
Suppliertospecify Suppliertospecify Suppliertospecify
DVB‐T/C DVB‐T/C DVB‐T/C
1000p 1000p 1000p
Local
4
Keyboard
Mechanical
Misc
OSDLanguages
PIP/PAT/PAP/PIC/P
AC
English,Spain,
French,German,
Italy,Czech,
Croatian,Danish,
Hungarian,Dutch,
Norwegian,Polish,
Portuguese,
Romanian,Slovak,
Slovenian,Serbian,
Finnish,Swedish,
Turkish,Greek,
Bulgarian,Russian,
Latvian,Lithuanian,
Estonian,Ukrainian
English,Spain,
French,German,
Italy,Czech,
Croatian,Danish,
Hungarian,Dutch,
Norwegian,Polish,
Portuguese,
Romanian,Slovak,
Slovenian,Serbian,
Finnish,Swedish,
Turkish,Greek,
Bulgarian,
Russian,
Latvian,Lithuanian,
Estonian,Ukrainian
PAT/PAP PAT/PAP PAT/PAP
English,Spain,
French,German,
Italy,Czech,
Croatian,Danish,
Hungarian,Dutch,
Norwegian,Polish,
Portuguese,
Romanian,Slovak,
Slovenian,Serbian,
Finnish,Swedish,
Turkish,Greek,
Bulgarian,Russian,
Latvian,Lithuanian,
Estonian,Ukrainian
SwitchonTime 5‐7seconds 5‐7seconds 5‐7seconds
ECOmode Yes Yes Yes
PCcapability(upto
maximumformat)
WXGA WXGA WXGA
RearYPbPr 1 1 1
SCART1 Yes Yes Yes
PCInput Yes Yes Yes
SPDIF Yes Yes Yes
Headphonejack Yes(PCInput) Yes(PCInput) Yes(PCInput)
SideHDMI 5 5 5
SideUSB 1 1 1
Noofkeys 6 6 6
Front/Side Front Front Front
FrontCabinet HGinjection HGinjection HGinjection
BackCabinet Asmoulded Asmoulded Asmoulded
Remotecontrol 06‐519W49‐A040X 06‐519W49‐A040X 06‐519W49‐A040X
TableTopStand Yes Yes Yes
SwivelStand Yes Yes Yes
VoltageRange 230V 230V 230V
StandbyPower <0.3W <0.3W <0.3W
VESAMount Yes Yes Yes
Desination WholeEurope WholeEurope WholeEurope
3. Main Board Picture Introduction
5
3.1 TV set configuration introduction
Power
Board
Backlight
Drive Board
Main Board
Power In Ca ble
Key-Press
Board
Speaker
3.2 Main board sockets introduction
P12 HDMI 5
P7 USB
P17 CI CAM
T-CON
Board
P15 HDMI 3
LVDS
Cable
P8 HDMI 4
P14 HDMI 1
P1 Socket Scart
Receive
Board
Speaker
P10 HDMI 2
P4 VGA
P702To Speaker
PM3 I2C
SCL/SDA
PM4 LVDS
Signal Output
PM2 LVDS
Signal Output
P19 From
Power Boad
P2 Audio L/R
P13
Y/Pb/Pr
P5 TO Key
Board
TU1 TUNER IN
P9 Spdif out
P16 UO
RX/TX
3.3 Main board IC introduction (Top and bottom)
6
U700 Audio
Amplifier
UM20
U9:5VTO
3.3V
UM18
MEMC*DDR
UM21
SMT6M20S
UM19
Flash
U10
MT8295
U20 :12V
TO 1V8
U31
5VTO3V3
U201
Main IC
U14 Flash
U13 DDR
U23 HDMI Switch
U25 SCART
AUDIO DRIVER
U11 DEMO
U12 DDR
U18 Audio
Switch
U24
EEPROM
U16: 12VTO5V
U29 VGA
EEPROM
U1 12V
TO 5V
U17: 24VTO12V
L110:Dv3.3V
4. Flow Diagram
7
4.1 Block Diagram
UM21
MST6M20S
4.2 Power Supply Flow Diagram
8
24V/4.5A
STB-PWR 3V3SB
U811
RT9166-33
24V/4.5A INVERTER
+12V
+5V
24V/1A
U17
RT8110
U16
RT8110
U1
LD1117S50
U21
MP1484
UM20
MP1484
U9
LD1117S33
U33
AIC1084
U8
LD1117S33
U31
AZ1084
U811
U6
RT9166-33
LD1117S25
TUNER-5V
DV11
VDD-1V28
DV33
AV33
LD1117S
AV25
U7
AV125
U20
MP1484
U2
MP1484
Q1
AO4459
DDR-1V8
DV11-B
PANEL-TCON
4.3 I2C BUS Flow Diagram
9
MT5326
U201
5 6
U24
M24C16
11
U11
STV0297
55
U23
SII9187A
5 4
TU1
TUNER
I2C BUS
2 3
UM21
MST6M20
TUNER BUS
22
TU2
TUNER
SDA
SCL
33
U700
STA335B
SDA
SCL
8 9
U3
LNBH23
5. Key Circuit, Key Test Points and Wave shape Introduction
5.1 Standby test points
P19 : (Pin12/11)
3.3V
P5:
(Pin3/5/2/4) 3.3V
P16:(Pin1) 3.3V
L44: SUPPLY
10
3V3
U1:12VTO
5V
5.2 Power on/off test points
U201
11
5.3 Panel on/off test points
Q100
12
U201
Q9
5.4 12V to +5V test points and its wave shape
U16(RT8110)
Pin# Name Voltage
1 BOOT 12.1V
2 DRIVE 6.09V
3 FB 0.78V
4 VCC 5.31V
5 LGATE 3.85V
6 GND /0
7 UGATE 11.4V
8 PHASE 8.08V
WAVE(L30)TO(L1)
13
UGATE
U33：（Pin3）5V
LGATE
12VTO5V
L1:OUTPUT
5V
put
14
U9:5V TO
3.3V
L1: 5V
Out
U17:24VTO12V
5.5 12V to Tuner 5V test points and its wave shape
U1:12VTO
5V
15
5.6 24V to 12V test points and its wave shape
U17(RT8110B)
Pin# Name Voltage
1 BOOT 5.07V
2 DRIVE 3.66V
3 FB 0
4 VCC 20.3V
5 LGATE 20.5V
6 GND 16.7V
7 UGATE 23.2V
8 PHASE 0.82V
UGATE LGATE
24VTO12V
WAVE(L113TOL109)
U17:24V
TO12V
16
5.7 12V to 1V8 test points and its wave shape
U20(MP1484)
Pin# Name Voltage
1 BS 8.19V
2 IN 12.1V
3 SW 5.04V
4 GND 0
5 FB 0.93V
6 COMP 1.01V
7 EN 7.58V
8 SS 3.62V
U20 :12V
TO 1V8
12VTO1.8V
WAVE(L109TOC560)
+)
5.8 AV33/AV25/AV125/DV33/DV11 test points and its wave shape
17
U21(MP1484)
Pin# Name Voltage
1 BS 6.69V
2 IN 12.1V
3 SW 4.06V
4 GND 0
5 FB 0.92V
6 COMP 1.06V
7 EN 7.58V
8 SS 3.64V
18
U31 5VTOAV/3.3V
U9:5VTOD
V/3.3V
3V3VTO1.25V
WAVE( U7: 3TO 2)
12VTO1.8V
U21:12VT
ODV/1.1V
5VTODV3.3VWAV
E(U9:3TO2)+)
U7:3V3TO
1.25V
U6:5VTO2.5V
5VTO2.5V
19
WAVE(U6 :3TO2 )
12VTO1.8V
5VTOAV3.3V
WAVE(U31:3TO
2)
12VTO1.8V
5.9 Main IC key test points and its wave shape
X27M2:crysta
l Oscillator
C503:
C524:
U14:
X27M1:crysta
l Oscillator
C167:
C168:
Q10:PanelDim
U14Main
Program
L85:DDRV1.8V
Q19:Reset
Transistor
U24
EEPROM
UpdateOnline:3.3v
R78,R80
Q15:Pwr-Pr
20
otect
C:Pole 3.0V
MEMC:3.3V,SDA,SCL
U24: System EEPROM’s wave shape (Only while RCU or Key is pressing)
Pin_6:SCL
Pin_5:SDA
:
5.10 Start up test points while power on
21
5.11 T-CON power supply test points
22
Q1:AO4459
Q14:BT390
L55/L56:12V
Q14(B)toQ1(
23
5\6\7\8)
WAVE
5.12 DDR IC key test points
RM90\RM91 (MEMC DDR)
MVREFof UM21 Reference Voltage
0.92V
R292\R293
MVREFof U12\U13 Reference
Voltage 0.92V
5.13 Tuner key test points
24
TU1
PIN# Name Function Voltage
1 ATN_PWR NC
2 B1 TUNER_5V 5.02V
3 RF-AGC RF Auto gain control
4 SCL BUS CLK 3.31V
5 SDA BUS DATA 3.31V
6 B2 TUNER_5V 5.02V
7 VTU-TP NC
8 AS GND 0
9 IF-AGC IF- Auto gain control 3.27V
10 DIF2 DIF Out Put 0.46
11 DIF1 DIF Out Put 0.46
12 AIF
5.14 HDMI input interface
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