3. Protection or without light (refers to the disappearance of image several seconds
after the emergence of image)
4. White panel
Theimagedisappearedimmediatelyafterthe
emergence; check the plug of high-voltage switch board
for striking sparks and poor contact
No problems identified, replace high-voltage
board; if the fault remains, check the contact
line of back light of LCD for any damage, and
replace LCD board.
If there is spark striking,
replace high-voltage board
YES
NO
White panel refers to the back light works
without visible signal and just show white
screen. Check the voltage of socket for flat
cable connecting the main board to screen
for abnormality
Check the interface between main board
and connect line for any looseness,
shedding,ifnoabnormityexisted,
replace LCD screen
Check the power supply chip of
control screen or replace main
board
YES
NO
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5. White screen after power-off (work normally when power on, but when power-off or
no signal input, the screen shows a white screen)
6. TV without channel or with color cast
Check whether there is change of voltage at the high voltage
board controlled by main board when power-on and power-off
Check whether the voltage change of the control pins on
the plug interface of high voltage board is normal when
power-on and power-off
Check whether the voltage of the pin on main chip
controlling the working voltage of high voltage board is
normal when power-on and power-off
YES
NO
Thecircuit
relatedto
highvoltage
board is poor
Checkwhetherthelines
between main board and high
voltage board is in open-loop
or poor contact
Check relevant circuits of
highvoltageboard
controlled by main board
Replace poor main
chipsorrecopy
software
Check TV antenna plug for looseness and
poor contact
If with color cast, check the setting of
color system under menu; and change
of color system to see whether it is
normal (Usually set to automatic)
Replace antenna plug
Check the antenna and its signal
source, if no problems exist, replace
tuner or control chips with the same
model
NO
YES
YES
YES
NO
NO
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7. Poor sound
8.No VGA input signal
Switch to other audio input, check whether DVD
input and PC main board input has sound
Poor sound refers to without sound or with noise; check
whether the selection of sound system is proper
No sound; check whether remote control mute is
selected and switch sound system
No sound for other inputs; check the sound
amplifier and the shared control circuit
There is sound for other inputs,
replace TV tuner or control chip
YES
YES
NO
NO
VGA signal input does not respond, the screen
prompts “Please input signal”, check whether PC
signal source and signal line is normal.
Check VGA signal input board and see whether the row
and field sync signal protection diode is broke down
Replace PC or signal line, check
display VGA plug for looseness
Replace the motherboard or
factory reset is normal
Replace the 5.6V Zener diode
on the motherboard
NO
YES
YES
NO
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9. Poor embedded power supply of TV
10. Common fault of LCD screen
10.1 Bright line or bright belt (BL): constant longitudinal or transverse illuminating line or
belt due to non-conformed connection between IC and glass
10.2 Dark line (DL): constant longitudinal or transverse illuminating line due to
non-conformed connection between IC and glass.
10.3 White panel (WP): only light tube illuminates owing to non-conformed drive plate of
the LCD, without any display signal in the display area, and the whole screen is white.
10.4 Screen breaking: (overflow of LCD): with damage or invisible damage of the liquid
crystal glass, irregular black defect occurs from liquid crystal body to glass and polarizer,
which can not be seen at any image. The overflow portion can not form image and does not
display.
10.5 Pressing Scrape (PS): after local display area at the front of LCD is heavily pressed,
Power on, check embedded power supply 5VSB in TV for 5V voltage output
High electrical level existed at
STB (higher than 2.5V)
Replace power supply
YES
YES
NO
NO
Check EC2 for 380-400V
voltage; if there is not,
replace power supply
Check +5V , +12V
for normal input
YES
Check power supply line for looseness, check indictor for
working and power supply socket for looseness
NO
NO
Replace power
supply
Fastenlines
and socket
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Page 58
glass of the pressed portion is not damaged, the liquid crystal body can not display normally,
with spot or block black defect.
10.6 Screen mess: irregular color display arising from damage of driving plate in LCD.
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Enter into factory menu by signal source+left-right-left-right
Level 1 menuLevel 2 menuLevel 3 menuValue ,note
Factory reset
Aging mode
Preset
channel
power-up
mode
Mboot
upgrade
Main upgrade
Type in MAC
address
Data
debugging
Secondary/Memory/
Direct
Are you sure
Upgrade ?
选项:confirm/Cancel
Are you sure
Upgrade ?
Option:confirm and
Cancel
ADC ADJUST
White Balance
Picture Mode
Factory reset initialization
EEPROM Settings
Update Mboot
Update main procedure
ADC adjustment
Source
VGA(RGB),component(SD,H
D) choice
R-GAIN
The front-end gain adjustmentG-GAIN
B-GAIN
R-OFFSET
Clamp level adjustmentG-OFFSET
B-OFFSET
Phasephase
Auto Tune
Color temperature adjustment
Color Temperature
R GainWhite level adjustment
G Gain
B Gain
R OffsetBlack level adjustment
G Offset
B offset
Image pattern adjustment
BrightnessBrightness
ConstrastContrast
SaturationSaturation
Huehue
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Test Pattern
Non_linear
OverScan
SharpnessDefinition
BacklightBrightness
Various curve adjustmentOSD_0
OSD_25
OSD_50
OSD_75
OSD_100
Repetition rate adjustment
SourceVarious signal source
H sizeH adjustment
H positionThe center position of horizon
V sizeField adjustment
V positionThe center position of field
PEQ adjustment;
Fo:Setting the center
frequency point of the gain
frequency band
Fo1 coarse
Range 0~16000,step is
100HZ
Fo1 fineRange 0~16000,step is 1HZ
PEQ
Fo2 coarse
Range 0~16000,step is
100HZ
Fo2 fineRange 0~16000,step is 1HZ
Fo3 coarse
Range 0~16000,step is
100HZ
Fo3 fineRange 0~16000,step is 1HZ
Fo4 coarse
Fo4 fine
Fo5 coarse
Fo5 fine
Uart Enable(switch Uart)On/off
Uart Debug
Debug tool can be used to read
COM port
EfficiencyBk
EfficiencyBk_Max
AVC
CEC/ARC
Other
Screen model
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PQ
Software
version
Barcode code
60
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Net Work TV MSD6A628 software upgrading (After service)
1, software upgrade tools and materials
* PC (WINDOWS XP system, USB2.0)
* AC100 ~ 240V power supply and power cord
* ISP programming board and cable
* ISP programming board driver
* USB flash drive (version 2.0, the capacity is not more than 2G)
* Upgrade software and boot files
2, preparation before upgrade.
Write down all signal ADC and white balance data in factory menu before upgrading (FLASH initialization may occur
after upgrade, color calibration data erased, and then revert to the written down data):
1. Under YPbPb signal source, press the MENU key to pop up the main menu, and then press 8202 by number keys to
enter the factory menu, select ADC ADJUST item, press the OK button to enter the next menu, move the cursor to the
MODE key, press the left / right cursor keys to select YPbPr (SD) items, recorded R-GAIN / G-GAIN / B-GAIN value
and R-OFFSET / G-OFFSET / B-OFFSET value.
2. Undert ADC ADJUST item and press OK to enter the next menu move the cursor to the MODE key, press the left /
right keys to move the cursor to select YPbPr (HD) items, recorded R-GAIN / G-GAIN / B- GAIN value and R-OFFSET
/ G-OFFSET / B-OFFSET value.
3. Under VGA signal source, press MENU in the main menu pops up, then press 8202 by number keys to enter the
factory menu, select ADC ADJUST item and press OK to enter the next menu, move the cursor to the MODE key, press
the left / right cursor keys to select YPbPr (SD) items, recorded R-GAIN / G-GAIN / B-GAIN value and R-OFFSET /
G-OFFSET / B-OFFSET value.
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Wite donw YPbPr(SD)an
d
YPbPr(HD)value before upgrade
and wite down VGA mode
R/G/B-GAIN and R/B/G-OFFSET
value , change back to original
value after software upgrade
finished .
1. In Android system main interface, move cursor to “network”--“Ethernet”item, click mouse left button to get into ,
record MAC address.
MAC address
3, the software upgrade content and procedures :
1. U disk formatted as FAT32 format , and then upgrade the software ( software name and case is MstarUpgrade, suffix
bin) put in the U disk .
There are two ways for software upgrade, recommended mode 1.
The bigger the file, the longer time
upgrade will take, it is normally about
3~4 minutes,give enough time to
make sure upgrade success
Method 1: In the case of TV normally boot, enter the factory menu upgrade: power on machine, insert disk into the TV
USB interface, and then enter the factory menu, move the cursor to the Other Option Press OK to enter , and then move
the cursor to Upgrade Main options , press OK to upgrade.
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Press OK button to
upgrade
TV display tip
Method 2: Insert U disk into TV main board or programming fixture board USB interface , long press VOL + key, then
power on TV ( main board ) , after about five seconds the TV ( remote control panel ) indicator fast when flashing ,
indicating that the TV is being upgraded , after the light is not blinking on and off ( this process is time-consuming
depending on the size of the main board software , the greater the file the longer the software upgrade , the upgrade takes
roughly three minutes when the board software has 270M , 500M needs four minutes ) , means upgrade is complete .
3. Notes:
a. the file name and the case cannot be wrong , otherwise it will not be upgraded .
b. When using the U disk upgrade, sometimes light will no longer flashing after a TV remote control panel lights
flickering flashes ten seconds, this is upgrade failure. Normal upgrade remote panel lights flashing to be more than two
minutes, in this case upgrade again by powering off main board.
c. after powering off, if main board cannot upgrade normally , programming again the boot file (Mboot.bin or
MbootUprade.bin).
e. If the operator of this program is not familiar with the software, under the condition the can see factory menu
recommended upgrading the operating menu to enter the factory to prevent misuse.
4, when the above third step cannot be upgraded, upgrade the boot file first; please refer to the following specific
operating instructions.
MSD6A628 Network TV main board related upgrade packages with mboot.bin and MbootUpgrade.bin equipped with
two boot files. Both boot files function are the same, but there are differences between upgrade methods, only one
upgrade one of them. If the current TV main board can work properly, copy the boot files to the U disk after formatted
FAT32, then follow the instructions below to upgrade:
Method 1 : first MbootUpgrade.bin boot files, stored in the U disk, and then insert U disk in TV main board USB port,
press and hold the VOL + button on the TV control panel and hold, then power on TV ( main board), approximately after
five seconds the TV ( remote control panel ) indicator flashes rapidly , indicating that the TV is being upgraded , after the
light is not blinking on and off (time-consuming of this process approximately 60 seconds ) , indicating that the upgrade
is complete .
Method 2 : first Mboot.bin boot files stored in the U disk, then U disk inserted in the TV main board USB interface to
power on TV, and then press the MENU button on the remote control and then followed by 8202 the number keys to enter
the factory menu, move cursor to Other Option press OK to enter , and then move the cursor to upgrade mboot option ,
press OK to upgrade ( this time-consuming of this process is about 15 seconds ) .
Notes:
1.mboot.bin and MbootUpgrade.bin files can be put together in a U- disk, but no matter what methods to upgrade, all
operating according to operation instructions, control time to upgrade, ensure that the upgrade completed before power
failure, otherwise upgrade fails.
2. Because the boot files related to the TV's screen resolution and other relevant parameters, so before the software
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Page 65
upgrade boot files of each board must be upgrade first.
3. If the above two methods cannot upgrade, using programming board online upgrade following the instructions:
5, Programming board driver installation.
Use programming board online upgrade, programming board driver program has to be installed to PC, see the following
operation instructions.
1.use USB connecting wire to connect programming board and personal PC.
ISP programming
To personal
board
PC
2. PC identify new device, choose to install from list or specified location and appoint driver file position as figure.
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3. after PC finds driver file, below information will be prompted during installation, click on , remains can be installed, the
system will install the driver process three times , namely : Mstar USB Debug Tool A; Mstar USB Debug Tool B; Mstar
USB SerialPort , install the three drives in order !
6. use programming board online upgrade boot file.
1. Use a USB cable and VGA cable to connect the programming board and TV main board , computer main bard and
then powering on main board.
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Page 67
To personal PC
USB interface
To TV main
board VGA
socket
2. Double-click to run MStar ISP Utility v4.6.t2.exe, click the "Auto" icon on the main toolbar under the type selected for
eMMC.
3. Click the "Read" button in the main toolbar under load in EISP Loader File1 munim_EISP_boot _ ** _ **. Bin, in EISP
Read File1 load rom_emmc_boot.bin, in EISP Loader File2 load munim_EISP_user _ ** _ **. Bin, load mboot.bin
( Figure 2 ) in EISP Read File2.
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4. Click on the main toolbar "Config" button , the interface is set up according to the pictures of their respective settings.
5. Click on the main toolbar "Connet" button at the top of the tab bar to run the program will display [ Device Type
eMMC ] .
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Click “Connet” button under tool bar, running
program top part will show【Device Type eMMC】
After click“Stop/Run”button,
if interface lower right corner
shows “Connecting.....” and tab
bar shows as “【 Device Type
eMMC】 “ means connecting is
failed or current main board can
only us U disk to upgrade.
If there is no showing of [ Device Type eMMC ] upgrade cannot be conducted , please check the programming board is
properly connected and if main board can boot (main board can boot normally not display [ Device Type eMMC ,] need to
upgrade the software, copying it into U disk, press and hold the button panel VOL + button first and powering on main
board, wait for LED indicator on the machine flashes for about five seconds and then unplug the U disk and re- power
main board to display ) .
7. Check "Auto" icon in the menu settings are consistent with the figure below, and then click "Run" button to boot file to
program.
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Programming
prog
Execute button
ress
result
Programming progress bar will scroll now, after programming is finished, it will show “Pass”。
7, Main board driver upgrade.
1. U disk formatted as FAT32 format, and then upgrade the software ( software name is MstarUpgrade, suffix is bin) put in
U disk .
2. Insert U disk into main board or programming TV fixture USB port , press VOL + key, then power on TV ( main board)
after about five seconds the TV ( remote control panel ) indicator flashes rapidly , indicating the TV is being upgraded ,
when the light stops blinking and goes out ( this process time-consuming is depending on the size of the main board
software , the greater the file the longer the software upgrade time , when the board is 270M, upgrade software takes
roughly three minutes ,when 500M , it is about four minutes ) , indicating that the upgrade is complete .
3. Notes:
a. the file name and case cannot be wrong , otherwise it will not be upgraded .
b. When using U disk to upgrade, sometimes after light does not flat after a TV remote control panel lights flickering
flashes ten seconds, this is upgrade failure. Normal upgrade remote panel lights flashing more than two minutes , place the
board in case of power failure in this case re- board software upgrade.
c.main board cannot be upgraded after powering on , please programming boot file again (Mboot.bin or
MbootUprade.bin).
8, after the upgrade is complete, install machine cover, before delivery, factory adjustment must be carried out :
1. powering on machine, press the MENU button on the remote control to the main menu pops up, then press 8202
followed by the number key to enter the factory menu , press the up / down keys to move the cursor to the "Other Options"
option Press the Up / Down keys move the cursor to the "Restore To Default" option by right the reset command , a black
screen for about 8 seconds and the machine automatically re- power on reset operation is completed .
Page 71
2. Completed initialization within three minutes after inserting VGA signal wire and powering on machine (automatically
initializes started after factory menu reset is ) switch to VGA signal source . Press the MENU key to pop up the main menu, and
then followed by 8202 the number keys to enter the factory menu, press the Shift key to "ADC ADJUST" and press the OK
button to enter the next menu, press the left / right keys to move the cursor to select VGA item, then press shift keys to move the
cursor to the AUTO TUNE key and press the OK button to execute the self-adjusting command. There is a corresponding entry in
the AUTO TUNE Tip: SUCCESS, means self-adjusting qualified, FAILS, means self-tuning failure, need to self adjusting again.
3. under YPbPb source ,input 480i 100% color bar signal to machine . after press NEMU poping-up main menu , then
followed by 8202 the number keys to enter the factory menu , select ADC ADJUST item , press the OK button to enter the
next menu , press the left / right keys to move the cursor to select YPbPr (SD) item , press down keys to move the cursor to
the AUTO TUNE key and press the OK button to execute the self-adjusting color commands. There is a corresponding
entry in the AUTO TUNE Tip : SUCCESS , means self-adjusting qualified , FAIL , means self-adjusting is filed, needed to
adjust again.
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Press right and left key to execute se
lf
lf
L
adjusting order , SUCCESS is OK ,FAIL
is failure ( need to re adjusting)
4. Under YPbPb signal source , input 720P 100% color bar signal to machine. Afater pressing NEMU pop-up main menu,
then followed by 8202 the number keys to enter the factory menu , select ADC ADJUST item , press the OK button to
enter the next menu , press the left / right keys to move the cursor to select YPbPr (HD) key, then press down keys to move
the cursor to the AUTO TUNE key and press the OK button to execute the self-adjusting color commands. There is a
corresponding entry in the AUTO TUNE Tip : SUCCESS , means self-adjusting qualified , FAIL , means self adjusting is
failed, need to adjust again.
Press right and left key to execute se
adjusting order , SUCCESS is OK ,FAI
is failure ( need to re adjusting)
5. about white balance adjustment:
* need to input standard graphics to TV during auto white balance self adjusting, recommended instrument is
CHROMA222293.
* In case not plugging signal line, in the factory menu of ADC Adjust, change the source value of VGA, YPBPR (HD),
R-GAIN YPBPR (SD) for each mode / G-GAIN / B -GAIN value and R-OFFSET / G-OFFSET / B-OFFSET to the
original value before upgrade.
9 , MAC address programming refers to "MSD6A628 Msd6a608 MSD6A818 smart network TV MAC address code
programming Guide" , in general, just use U disk to upgrade ( do not use programming board burn boot files MAC in
machine, will not erased , if using programming board to re- burn the boot files , MAC address programming is
needed ) .
10, after ADC ADJUST debugging finished, press the MENU button several times to exit the factory menu to save the
data , turn the machine off and then restore the original packaging.
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5
4
3
2
1
MSD6A628
PAGE
DD
1Index&History Rev
2
3
4
方案
--T8E
Block Diagram
System Power
MSD6A628
大板原理图
Content
VER:A1.0 2014-8-12
MSD6A628 POWER5
6
7
8
CC
LVDS &Tuner &NAND page
Video&VGA&USB&Amplify page
HDMI&Ethernet page
History Rev
Author
ZHQINGFirst Version Release
Ver:A1.06/25/2014
Rev
DescriptionDATE
BB
AA
本文档仅限中国深圳市康冠技术有限公司和被呈送方内部使用,未经书面许可请勿扩散到第三方。
This document for ShenZhen KTC Technology CO., Ltd and presented party internal use only,
Do not spread to third party without the written permission.
版权所有@深圳市康冠技术有限公司
5
4
Copyright@ ShenZhen KTC Technology Co., LTD
3
文件名称:
文件名称:
文件名称:
文件编号:
文件编号:
文件编号:
设计:
设计:
设计:
发行部门:生效日期:
发行部门:生效日期:
发行部门:生效日期:
2
KTC ISO9001.ISO14001体系文件
KTC ISO9001.ISO14001体系文件
KTC ISO9001.ISO14001体系文件
MSD6A628方案T8大板DTMB数模一体智能电视原理图
MSD6A628方案T8大板DTMB数模一体智能电视原理图
MSD6A628方案T8大板DTMB数模一体智能电视原理图
T4251
张志清
张志清
张志清
研发处
研发处
研发处
版本:3.0
版本:3.0
版本:3.0
审核:
审核:
审核:
页数:
页数:
页数:
批准:
批准:
批准:
Friday, August 15, 2014
Friday, August 15, 2014
Friday, August 15, 2014
1
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18
of
of
of
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4
3
2
1
3.3V_NORMAL
GPIO
AS1117
1.28V
DC-DC
1.15V
DC-DC
TUNER_3.3V
TUNER PWR
AS1117
DDR PWR
DC-DC
3.3V_STANDBY
AS1117
32Gbit
EMMC FLASH
HDMI1
(ARC)
HDMI2
HDMI3
(MHL)
VDDC_CPU PWR
VDDC PWR
DDR PWR 1.5V
3.3V_Standby
HDMI1
HDMI2
LAN
屏电压
12V_NORMAL
MOS
MSD6A628
LAN
Y/Pb/Pr
管控制
Y/Pb/Pr
40P LVDS
AV-IN
VGA
COAXIAL
VGA
RESET
DD
12V_NORMAL
5V_NORMAL
5V_STANDBY
PWR_ON/OFF
三极管控制
CC
USB
AV-OUT
COAXIAL
12V_NORMAL
Audio AMP
TPA3110LD2
IF
TUNER_3.3V
IR&KEY
VEDIO-OUT
SPK-L
SPK-R
SILICON TUNER
TDA18275HN
IR&KEY
TUNER CONN
USBAV-IN
RF
BB
AA
文件名称:
文件名称:
文件名称:
文件编号:
文件编号:
本文档仅限中国深圳市康冠技术有限公司和被呈送方内部使用,未经书面许可请勿扩散到第三方。
This document for ShenZhen KTC Technology CO., Ltd and presented party internal use only,
Do not spread to third party without the written permission.
Value Mode Description
3'b000 SB51_ExtSPI 51 boot from SPI
3'b001 HEMCU_ExtSPI ARM boot from SPI
3'b010 HEMCU_ROM_EMMC ARM boot from ROM; outer storage is eMMC
3'b011 HEMCU_ROM_NAND ARM boot from ROM; outer storage is NAND
3'b100 DBUS for test only