BBK Tv1006 Schematic

Tv1006

service manual

Catalog

Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Power supply

1.1.2 Precautions for antistatic

1.1.3 Precautions for display screen

1.1.4 Precautions for laser head

1.1.5 About placement position

1.2 Maintenance method

1.2.1 Electric resistance method

1.2.2 Voltage method

1.2.3 Current method

1.2.4 Element substitution method

1.2.5 Cutting method

1.2.6 Visualized method

1.2.7 Comparison method

1.3 Required device for maintenance

Chapter Two Functions and Operation Instructions

Section One TV SEGMENT

2.1.1 Features

2.1.2 Set list

2.1.3 Controls and functions

2.1.4 TV mode

Section Two DVD SEGMENT

2.2.1 DVD functlon settings

2.2.2 DVB FUNCTION SETTINGS

2.2.3 OTHERS

Chapter Three Principle and Servicing

Section One Flow chart of the player

3.1.1 scheme composing of the player and features of function

3.1.2 Player composing and diagram

3.1.3 Account for player key IC function:

Section Two Principle of TV part unit circuit

3.2.1 System control circuit

3.2.2 Audio circuit

3.2.3 Video circuit

3.2.4 Input circuit

3.2.5 Power circuit

Section Two Unit circuit principle of DVD part

3.2.6 Introduction to laser head

3.2.7 Servo circuit

3.2.8 Disc in/out circuit

3.2.9 CD/DVD conversion circuit

3.2.10 Laser power control circuit

3.2.11 Decode circuit

3.2.12 Reset circuit

3.2.13 Video circuit

3.2.14 Audio circuit

3.2.15 USB/CARD circuit

Seciton Two Unit Circuit Principle of DVB Part

Section Three Troubleshooting Cases

3.3.1 TV troubleshooting flow chart

3.3.2 Troubleshooting flow chart of DVD parts circuit

Section Four waveform diagram

3.4.1 waveform diagram of TV part

3.4.2 Waveform diagram of DVD part

Section Five Function Introduction to IC

3.5.1 function introduction to MT1389HD

3.5.2 function introduction to FLASH

3.5.3 function introduction to SDRAM

3.5.4 function introduction to D5954

3.5.5 function introduction to 4558/4580

3.5.6 function introduction to 24C16 SOP

3.5.7 function introduction to BA6849FM HSOP

3.5.8 function introduction to MST717

3.5.9 function introduction to CD4052

3.5.10 function introduction to BA7644

3.5.11 function introduction to APA2068

3.5.12 function introduction to AIC1899

3.5.13 function introduction to Pm25LV020

3.5.14 function introduction to TDA9886

3.5.15 function introduction to MT8606

3.5.16 function introduction to DIB3000P

Chapter Four Disassembly and Assembly Process

4.1 Player disassembly process

4.2 Flow chart of player assembly

Chapter Cinque PCB board & Circuit diagram

Section One PCB board

5.1.1 Surface layer of Main Board

5.1.2 Bottom layer of Main Board

5.1.3 Surface layer of drive BOARD PCB

100

101

103

104

106

112

119

122

124

125

126

5.1.4 Bottom layer of drive BOARD PCB

Section TWO circuit diagram

5.2.1 Main Board

5.2.2 Drive Board

5.2.3 Keystoke Board

5.2.4 Remote cotrol Board

Chapter Six BOM List

6.1 AUDIO BOARD

6.2 CAR POWER LINKER

6.3 DRIVE BOARD

6.4 HEADREST BRACKET

6.5 KEY-PRESS BOARD

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135

137

138

139

144

145

147

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Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Power supply

When maintenance personnel are repairing DVD TV, he should pay special attention to the power

with 220V 800V AC and 330V DC which will cause hurt and damage to persons!

1.1.2 Precautions for antistatic

Movement and friction will both bring static electricity which causes serious damages to integrated

IC. Though static charge is little, when a limited quantity of electric charge is added to large

scaleintegrated IC, as the capacitance is very small in the meantime, now the integrated IC is very much

easy to be struck through by static electricity or the performance will decrease. Thus static electricity

prevention is of extraordinary importance. The following are several measures to prevent static

electricity:

1. Use a piece of electric conduction metal with the length of about 2 metres to insert into the earth,

and Fetch the lead wire from the top of the surplus metal and connect to the required static electricity

device. The length and depth of the metal embedded under the earth should be determined according to

the wettability of the local soil. For humid places, it may be shorter, and longer and deeper for dry places.

If possible, it can be distributed and layed in terms of “#” shape.

2. On operating table-board, the antistatic table cushion should be covered and grounded.

3. All devices and equipments should be placed on the antistatic table cushion and grounded.

4. Maintenance personnel should wear antistatic wrist ring which should be grounded.

5. Places around the operating position should also be covered with electric conduction cushion or

Painted with antistatic paint.

1.1.3 Precautions for display screen

1. Display screen is breakable article, so please protect carefully when carrying and prevent fingers

or hard objects striking the screen to damage structure of the screen.

2. When cleaning screen, do not use organic chemicals. You should use cloth and use small

amount of special cleaning liquid in places difficult to clean.

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1.1.4 Precautions for laser head

1. Do not stare at laser head directly, for laser emission will occur when laser head is working,

which will Hurt your eyes!

2. Do not use wiping water or alcohol to clean laser head, and you may use cotton swab.

1.1.5 About placement position

1. Never place TV in positions with high temperature and humidity.

2. Avoid placing near high magnetic fields, such as loudspeaker or magnet.

3. Positions for placement should be stable and secure.

1.2 Maintenance method

1.2.1 Electric resistance method

Set the multimeter in resistance position and test whether the numerical value of resistance of each

point in the circuit has difference from the normal value to judge the trouble spot. But in the circuit the

tested numerical value of resistance is not accurate, and the tested numerical value of integrated IC's

pins can only be used for reference, so the elements should be broken down for test.

1.2.2 Voltage method

Voltage method is relatively convenient, quick and accurate. Set the multimeter in voltage position

and test power supply voltage of the player and voltage of a certain point to judge the trouble spot

according to the tested voltage variation.

1.2.3 Current method

Set the multimeter in current position and test current of the player of a certain point to judge the

trouble spot. But when testing in current method, the multimeter should be series connected in the

circuit, which makes this method too trivial and troublesome, so it is less frequently used in reality.

1.2.4 Element substitution method

When some elements cannot be judged good or bad, substitution method may de adopted directly.

1.2.5 Cutting method

Cutting method should be combined with electric resistance method and voltage method to use.

This method is mainly used in phenomena of short circuit and current leakage of the circuit. When

cutting the input terminal voltage of a certain level, if voltage of the player rises again, it means that the

trouble lies in this level.

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1.2.6 Visualized method

Directly view whether abnormalities of collision, lack of element, joint welding, shedding welding,

rosin joint, copper foil turning up, lead wire disconnection and elements burning up among pins of

Elements appear. Check power supply of the machine and then use hands to touch the casing of part of

elements and check whether they are hot to judge the trouble spot. You should pay more attention when

using this method to check in high voltage parts.

1.2.7 Comparison method

A same good PC board is usually used to test the correct voltage and waveform. Compared these

data with those tested through fault PC board, the cause of troubles may be found.

Through the above maintenance method, theoretical knowledge and maintenance experience, all

difficulties and troubles will be readily solved.

1.3 Required device for maintenance

Audio Generator

Digital oscillograph ( 100MHE)

SMD rework station

Multimeter

Soldering iron

Pointed-month pincers

Cutting nippers

Forceps

Electric screw driver

Terminals connecting cord

Headphone

Microphone

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Chapter Two

Functions and Operation Instructions

2.1 Section One TV SEGMENT

2.1.1 Features

Miscellaneous

#High- quality color TFT LCD with size 10

#Maximum mode 800X480

#Built-in DVD player with Slot-in mechanism

#Built - in stereo audio system

#USB port to playback compatible files stored on flash memory of external devices

#Card Reader

#Composite and audio input/output

#2 headphone outputs

#Kickstand

#Headrest bracket for car

TV Channels Receiving and External Signal Playback

#Automatic and fine tuning functions with 100 channals memory

#Adjustable brightness, contrast, saturation, hue and 4 preset image settings

#Tone and sound balance adjustment

Disc playback mode

#Digital video playback:DVD-Video, Super VCD, VCD compatibility

#MPEG-4 standard support

#Digital audio playback: CD-DA, HDCD and Mp3 compatibility

#Digital graphic albums playback: Kodak Picture CD and JPEG

#Compatible disc types: CD-R/CD-RW, DVD-R,/DVD-RW, DVD+R/DVD+RW

#Russia, Cls and Baltic States adaptation interface and filenames CD-Text support simplifies device

operation

#”Q-Play” function provides direct playback and allows to skip commercial that is not possible to rewind

#Automatic screensaver function

#Parental control function to protect children from watching inappropriate discs

#Super wide range of operating power supplies(~100-240v) automatic short circuit protection

2.1.2 Set list

LCD TV Remote Control AAA Battery Power adapter Power cord

1pcs 1pcs 2pcs 1pcs 1pcs

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AV cord Car adapter Wall mount holder Antenna Headrest bracket Bag Headphones M4X5 M4X25 Expadable pipes User Manual Warranty card

2.1.3 CONTROLS AND FUNCTIONS

(1) Overview panels control and switching interface

1pcs 1pcs 1pcs 1pcs 1pcs 1pcs 1pcs 8pcs 4pcs 4pcs 1pcs 1pcs

Upper panel

STANDBY button

To switch in standby mode and power-on mode.

SOURCE button

Select input source.

CH-/+buttons

To switch TV channels/to move in the menu.

VOL-/+ buttons

Increase or decrease Volume/ characteristics.

SETUP button

TV function setup.

button

Press to playback/pause.

button

Press to stop the playback.

Button

Press to open or close the disc tray.

Left panel

USB port

MMC/MS/SD CARD READER

DC input terminal

AV I N

AV O UT

Headphones ouputs

RF input terminal

Front panel

Standby LED Sensor or infrared beams

Right panel

Slot-in mechanism

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(2) Remote control general view

Button

Press to playback/pause/Switch between TV and radio modes,valid in DVB mode.

ZOOM+/-button

Press to zoom in/out.

FAV button

In DVB mode, open favourite channel list.

CH buttons

Press to switch between channels /to choose menu item.

MENU/EPG button

DVD disk menu/PBC function/To display the program guide valid in DVB mode.

ANGLE button

Press to change the camera angle.

Q-PLAY button

Press to turn the Q-PLAY mode on.

SUBT button

Press to change the subtitles language.

Button

Press to switch the device on/into standby mode.

EJECT button

Press to open/close the disc tray.

LANG button

In DVD and DVB mode. Press to change language.

DISP button

Press to display the disc and the current source information.

RADIO button

Press to switch to picture mode.

Numeric buttons

-/-- button

Press to switch one or two-digit program number.

CURSOR buttons

OK button SETUP button

Press to enter setup mode.

Button /GOTO

Press to return to the previous channel in TV and DVB mode/To play from a certain time point in DVD mode.

SOURCE button

Press to change the mode.

Button /INFO

Press to start rewind/rewind scanning/To display the information about channel and program in DVB mode.

Button

Press to skip backward.

REPEAT button

Press to repeat.

A-B button

Press to repeat the selected section.

Button

Press to turn on/off the sound.

VOLUME+/-button

Press to adjust the volume.

USB/DVD/CARD button

Press to switch between USB/DVD/CARD modes.

Button

Press to skip forward.

Button

Press to stop the playback.

Button AUDIO

Press to forward/forward scanning/In DVB mode, to change sound track between left, right and stereo.

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2.1.4

This LCD TV can store up to 100 channels and enables to scan channels automatically, manualy and by fine tuning.

TV MODE

(1) Adjusted channels selection

#Press CH buttons on the remote control or

+CH- buttons on the upper panel to switch to another TV channel.

#Use numeric buttons and -/-- button to enter the

number of the channel.

#Press button to return to the previous

channel.

(2) Default picture settings selection

#You may select one of the default picture

settings:

USER, STANDARD, DYNAMIC and SOFT.

#You may adjust necessary parameters in the

device menu.

(3) TV settings

#Press SETUP button to display the menu. #Use cursor buttons on the remote control or

+CH-buttons on the upper panel to select the item. Use buttons to adjust selected parameter. Use OK button for confirmation. Press SETUP button again to return to the main menu or to exit TV SETUP.

#CHANNEL item enables to select the number of

adjustable channel.

#COLOR SYSTEM item can be changed

between: AUTO, PAL and SECAM. We recommend to set this item to AUTO.

#SOUND SYSTEM item can be changed

between B/G, D/K, L and I.

#FINE item enables to adjust the channel

frequency accurately.

#MANUAL SEARCH item enables to change

channel settings.

#AUTO SEARCH item enables to adjust channel

setting automatically.

#CHANNEL EDIT submenu enables to select,

skip and swap the channel. #CHANNEL parameter enables to select current channel. #SKIP function enables to make current channel inaccessible while using+CH- button to browse channels. #SWAP function enables to select the channel number to swap with current channel.

(4) Picture settings

#Select PICTURE item to adjust picture

parameters.

#You may adjust BRIGHTNESS, CONTRAST,

SATURATION, SHARPNESS, TINT for USER mode.

NOTE

#You can’t adjust TINT while watching TV

channels.

(5)TV setting

Select TV SETUP item to adjust channels.

You may select CHANNEL, COLOR SYSTEM, SOUND SYSTEM, FINE, MANUAL SEARCH, AUTO SEARCH and CHANNEL EDIT.

(6) system

You may select LANGUAGE, TRANSPAR, ENCY, SLEEP, RATIO and RESET. #LANGUAGE item enables to select the OSD

language.

#TRANSPARENCY item enables to adjust

transparency of OSD. #SLEEP item enables to set the sleep timer. #RATIO item can be changed between 16:9 and

4:3. #RESET item enables to reset all values to

default.

(7) Video settings

#Press SETUP button to display the menu. #In external video signal playback mode the

menu is the same.

NOTE

#In external video signal playback mode TV

SETUP item is inaccessible.

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2.2 Section Two DVD SEGMENT

2.2.1 DVD FUNCTION SETTINGS

(1) General setup

1.TV Display: This item is used to set the ouput picture ratio of this unit.

#Optional settings: Normal/PS, Normal/LB, Wide, Wide Spueeze: Default: Wide.

2.OSD language: This item is used to set the OSD language.

#Optional settings: English, Russian; Default: English

3.Screen Saver: Open or close the screen saver.

#Optional settings: On, off; Default:On

4.Last Memory: This player can save the currently played time point automatially when you leave the

current DVD disc playback(switch from DVD signal source to other signal source, enter standby state

in DVD mode).

#Optional settings: On, Off; Default: On.

NOTE:

When switching to DVD playback state again, this player can automatically search the time point

saved last time to continue playing. If you want to play from the beginning, please press [STOP] button

twice and then press [PLAY] button.

(2) Audio setup

1.Down mix mode: this item is used to set this unit’s DOWN MiX mode to change multi channel audio

into 2-channel audio output.

#Optional settings: LT/RT, Stereo; Default: Stereo

2. Dolby Digital Setup:

Dual Mono:

#Optional settings: Stereo, L-Mono, R-Mono, Mix-Mono;

Default: Stereo.

Dynamic:

#Set Dolby digital sound dynamic level, Default:Off

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3.Equalizer: #EQ Type: Set equalizer type, optional settings:

None, Rock, Pop, Live, Dance, Techno, Classic, Soft; Default: None.

#Bass Boost: Enhance low frequency sound

level, optional settings: On, Off; default: Off.

#Super Bass: Enhance very low frequency

sound level, optional settings: On, Off; default: Off.

#Treble Boost: Enhance high frequency sound

level, optional settings: On, Off; default: Off.

4.3D Processing: Set reverberation mode. #Optional settings: Off, Concert, Living Room,

Hall, Bathroom, Cave, Arena, Church; Default: Off.

5.HDCD: Set filter mode. #Optional settings: Off, 1x,2x; Default:1x.

(3) Video setup

1.Hue:This item is used to set the hue of video outputs.

2.Saturation: This item is used to set the

saturation of video outputs.

(4) Preference setup

1.TV Type: To set the output video system of this player.

#Optional settings: PAL, Auto, NTSC; Default:

PAL.

2.PBC: To set the PBC status.

#When playing SVCD,VCD2.0 discs, if PBC is

set On, this unit enters PBC playback mode; if PBC is set Off, the unit will play the disc according to track sequence.

Optional settings: On, Off; Default: On

3.Audio: This item is used to set the preference audio language when playing.

4.Subtitle: This item is used to set the preference

subtitle language when playing.

5. Disc menu: This item is used to set the preference disc menu language when playing.

#Default of disc menu language: English

NOTE:

#Audio, subtitle and disc menu language are

only effective in DVD mode.

#If the disc is not recorded with the language you

appointed, the unit will apply the language that the disc appointed to play.

#Select other languages: press[ ]button to

move cursor to “OTHER” item, press [OK] button and then number buttons to input the language code you desired. After input finishes, press [OK] button again.

6.Parental: this item is used to set the parental

control ratings to prevent children from watching restricted contents.(In the event the

disc supports this function) #Optional settings: KID SAFE, G, PG, PG 13, PGR, R,NC17, ADULT, Off; Default: Off

NOTE:

#When changing the parental control ratings, a

password is needed. Please refer to the

following password item for details.

7.Country Region: Set the country region

according to your country.

8.Default: This item is used to restore all settings

to the default value except”Parental control”

and “Password” in the setup menu.

(5) Password setup

Password: This item is used to set a six digit password to enable you to change the parental control ratings.

Password Mode:

To set whether parental control function needs a password, optional setting: On, Off; Default: On. Password:

To change the password of the parental control function, default:000000.

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2.2.2 DVB FUNCTION

SETTINGS

Turn on the TV, press [SOURCE] button to change source to to DVB, then you can enjoy the rich and colorful contents of Digital Video Broadcast!

In DVB mode, press [SETUP] button, then press[ ]button to choose DVB item , the DVB setup menu will be displayed as follow:

(1) General setup

1.TV Display: This item is used to set the output

picture ratio of this unit.

#Optional settings: Normal/PS, Normal/LB,Wide,

Wide Squeeze; Default: Wide.

2.OSD language: This item is used to set the

OSD language.

#Optional settings: English, Russian; Default:

English

3.TV Type: To set the output video system of this

player.

#Optional settings: PAL, Auto, NTSC; Default:

PAL.

4.Default: This item is used to restore all settings

to the default value except”Parental control” and “Password” in the setup menu.

(2) Video setup

1. Hue: This item is used to set the hue of video outputs.

2.Saturation: This item is used to set the

saturation of video outputs.

1.Area

You can choose the area of your country. Optional settings: Australia, Austria, Belgium, Russian, Denmark, Estonia, Germany, Spain, France, ltaly, Netherland, Taiwan, Others; Default: Russian.

Note:

You must set the correct area before searching

channels.

Cursor button

2.Time zone

To choose your time zone, it is set depending on your country. If you don’t know the exact time, please ask local time manage department, Default: 03:00

3.Parental age

This item is used to set the parental control ratings. To prevent your children watching undesired programmes. #Optional

settings:4,5,6,7,8,9,10,11,12,13,14,15,16,17, 18, Disable

Default: Disable

4.Antenna power

Turn on/off antenna power supply. Optional settings: On, Off; Default: Off

5.Channel setup

This item is used to search channels, edit the channel list or your favourite channel list, view program guide information, etc.

(3) DVB-T setup

The DVB-T Setup Page is composed of five parts: Area, Time Zone, parental Age, Antenna Power, Channel Setup. Note: press [ ]button to select different item,

and press [OK] or [ ] button to enter it. Press [ [ button to return to the previous

menu or to exit the current menu.

#Auto Scan

Connect the antenna to the RF socket on the TV, if the antenna needs a power supply. Turn on/off antenna power supply in the menu.

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Then you can automatically search channels without entering any other information. In the scan process, the scan result will be displayed in the Auto Scan window. Press [SETUP] button to enter setup menu, then choose the DVB item;

Using the [ ]button to select the Auto Scan item, and press [OK] or [ ] button to select Start item, then press [OK] button; A prompting message will be displayed to request that you confirm, select”OK” and press the [OK] button to confirm.

Note:

If you press the [SETUP] button during scanning, the operation is stopped and a prompting message will be displayed at the bottom of Auto Scan window. Select “OK” and press [OK] button to abort auto scan operation, and the channels found until then will be saved. And select” Cancel” and press [OK] button to return to auto scan process. Wait while the TV searches for the channels, this may take a few minutes.

Once you press [OK] button to start auto search operation, all the saved channels will be cleared. Please don’t press any button during the course fo default operation.

#Manual scan

1.In setup menu, select” Manual Scan”, a manual

scan will be shown as follows:

2.Enter the frequency you want to scan by the

number buttons, then press “OK”, the scan button seems be pressed, press “OK” again to scan, a scan sign: scanning... Will be shown on the window.

3.The scan result will be displayed on the right

half of the manual scan window, you can save the found channels or delete them if the TV has the same program.

#Adjust channel

You can set your favorite channel, set parental control age for some channels or delete channel in Adjust Channel window.

1.Select channel using [ ]button, Press number

button[1] to set this channel as one of your favorite channels.

2.Select channel using[ ] button, if you don’t

like this channel press number button[2] to

skip it.

3.Select channel using[ ]button, press

number button[3] to set this channel as a

protected one, to prevent children from

watching the undesired program. Note: If you set a channel protected, a password

will need to be inputted in the Protect Channel window.

The default a password is 000000.

#Channel remap

You can change every channel position as you like in channel remap window.

#Reserve channel

If you want to watch a special program on a channel at a later time, you can reserve it. Then a reminding signal will be displayed on screen several minutes before it starts.

When playing a program on a channel, press [EPG] button, then a program information list of current channel will be displayed in a window, move the cursor to PROGRAM, then press [OK] button, a more detailed program list will be displayed, move the cursor to the program which you want to watch, then press [OK] button on remote control as shown in the window. The program is saved in your reserved channel.

You can set the time when the reminding signal should be displayed before the program starts.

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Sign of trouble Cause of trouble Act ions t o ellmi nate the t rouble

No sound

1.Poor ant enna connec tion.

2.Dis c dirt y or damaged.

3.Sound di sabled by the butt on.

1.Mak e proper connect ion.

2.Clean the disc .

3.Pres s t he button.

No image

1.Poor ant enna connec tion.

2.Incorrec t settings of your TV set.

3.The TV is in t he progressi ve scan mode while y our TV set does not support t his m ode.

1.Mak e proper connect ion.

2.Correct the settings of your TV set.

3.Pl ace the TV in the int erlaced s can mode through the TV's menu.

Blac k and whit e image

1.inc orrect TV c olor sy st em sel ected.

2.Color level on the TV set adjus ted incorrec tly .

1.Set the appropriat e color s ys tem via the menu: S ETUP>Image>TV scan.

2.Readjus t the c olor sy st em of your TV set .

Disc s cannot be read

1.Dis c not inserted.

2.Dis c ins erted inc orrectl y.

3.Condensat e on the DVD play er's laser head.

1.Insert the dis c.

2.Inst all the disc with the label side facing up.

3.Switch the TV on without disc for an hour.

Remote c ontrol does not operate

1.Remote control is incorrectly direct ed at the TV's screen.

2.Dis tance to the TV is in excess of 8 meters .

3.Bat teries are empty .

1.Use t he remote c ontrol ac cording t o the manual.

2.Decreas e the dis tanc e to the TV.

3.Replac e both batt eries.

some functions do nor work

1.Dis c is recorded inc orrectl y.

2.Incorrec t key sequence.

3.St atic voltage on the housi ng.

1.W ait5-10 s econds and the device will automat ically t eturn to normal st ate.

2.Repeat t he operation one more t ime.

3.Switch the device off for 1-2 minutes and then swit ch it on again.

Unstabl e image 1.Incorrec t TV set set tings . 1.Correct the TV set settings.

(4) Password setup

Password: This item is used to set a six digit password to enable you to change the parental control ratings.

Password Mode:

To set whether parental control function needs a password, optional setting: On, Off; Default: On.

Password:

To change the password of the parental control function, default:000000.

2.2.3 OTHERS

(1) Useful notes

#To extend the service life of your LCD TV make pauses of not less than 30 seconds between switching

off and repeatedly switching on the LCD TV.

#Disconnect the LCD TV from the wall outlet after shutdown.

#Some LCD Tv’s functions may not be applied to some discs.

#Use supply sources of rated voltage, otherwise the LCD TV may not function or be damaged.

#In case of the LCD Tv’s occasional stops, please switch the power supply off and then on again.

(2)Trouble shooting

Please check probable causes of malfunction before addressing the service center.

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Type class

TFT,colored ll(ISO 13406-2)

Size(") Height(mm) Width(mm) Dot Pitch (H mm × V mm) Viewing A ngle(H) Display color

133.2 222

0.275×0. 275 130° 16 700 000

Inputs

Video Composite Audio Stereo Others USB RF MMC/ MS/ SD CA RD

Outputs Headphone

Composite video output Audio output

Color system

TV tuner Video input s

PAL,SECAM PAL, SECAM, NTSC 3.58, NTSC 4.43,PAL60

Sound sy stem

TV tuner DK,I,BG,L

Disc types CD-R/RW ,DV D-R/RW ,DV D+R/ RW

Formats

DVD-Video,DivX,XviD,S VCD, VCD, CDDA,OGG,HDCD,MP3,WMA,Kodak Picture CD,JPE G

~100-240,50/ 60

+12,4. 5

Environmental consideration

Operating temperature(°,C) Operating humi dity (%) Storing t emperature (°,C) Storing hum idity (%)

+5 +35 10-80 0 +50

DVB

Input connec tor Frequency range(VHF/UHF) Channel range(VHF/UHF)

IEC-Type, IEC 169-2, Fem ale 174 MHz~ 858MHz 7&8 MHz

Dimensions(mm )

281×210×37

Weight

Net weight(k g) 1.25

Built -in DVD play er

Display

Power Consumption

(Maximum)(w)

Power Consumption

Power supply

Power adapter

Voltage and frequency(V, Hz) Volt age of external(V,A)

(3)Technical characteristics

1 1

#We are permanently improving the quality of our products; hence the product’s design, functionality

and technical characteristics may be modified without prior notice.

#We do not guarantee that all discs can be played smoothly due to the disc quality, disc recording quality

and recording format.

- 13 -

Chapter Three Principle and Servicing

Section One Flow chart of the player

3.1.1 scheme composing of the player and features of function

LD1006TI is a multi-function 10-inchLCD_TV with DVD playing function and disc reading/USB/DVB

functions. Electronic scheme of TV parts adopt AUO 10 inch TFT display screen+inverter components

TDKXAD245NR +MST717+APA2068 +tuner,etc.MST717 consists MCU/videoA/Dtransformer/LCD image

process circuit, etc. Electronic scheme of DVD part adopt MT1389HD+64M SDRAM+16M FLASH+D5954/BA6849

with a slot-in mechanism adoption to smoothly readMPEG4/MP3/CD/DVD and other disc format. Decode loader

MT1389HD can directly support external connecting USB and card reading function. DVB part is composed by

MT8606+DVP3000P and other elements to receive DVB signal and input to Mt1389 for decode resume.

Function features

Digital image adjust technic to the sharpness, brightness, contrast, chroma, and saturation of pictures,

gamma correction.

Built-in Dolby DTS Digital decode.

Adopt slot-in steel loader.

Video circuit support PAL/NTSC/SECAM/PAL60 multi-system video signal

Support USB/ card reading function

Compatible with DIVX MPEG4 format disc

Support DVB function

Support demodulation of PAL BG/DK/I SECAM BG/DK/L/L radio frequency signal

3.1.2 Player composing and diagram

3.1.2.1 Account for eachPCB component function

1. Video main board K1006-* the PCB semi-finished product is main composing part of the player. Video

main board composed of audio/video input circuit, audio choosing and amplified circuit, video selection,DVD

decode, servo circuit, DVB process circuit, etc. Its main function is to finish audio/vedio signals’ process and

realization of DVD/DVB function.

2. Adapter AK083-4 Power adapter is mainly composed of rectifier circuit and filter circuit and the main

function of this PCB semi-finished product is to provide power for the player.

3. Inverter component TDKXAD245NR ): inverter component is mainly composed of voltage rising circuit

and protection circuit. The main function of this PCB semi-product is to provide light tube working voltage for display

screen component.

4. Remote control receiving board : this semi-finished product is only composed by one tuner

and working indicator light. The main function of the PCB semi-finished product is to receive controlling order sent

by remote control and then send it to video main board MCU part to control and indicate machine working state.

B1006SI-1

- 14 -

5. Button board : mainly composed of buttons that separately responsible for function controlling of

41006SI-1

the machine part.

6. Display screen component this component is mainly composed of saturate LCD display screen, light tube,

LCD screen driving circuit and interface circuit with main function of resuming video signals into images for

customers to enjoy video images.

7. Driving board: Driving board is mainly responsible for changing video signals inputted from external into

signals needed by LCD driving. Driving board is also responsible for control of player function(MCU).

8.Diagrame of player is shown in picture3.1.2.2.1

3.1.2.2.1 Diagrame account: The play is mainly divided into 3 parts according to function module. 1.TV part:

according to design requirement, TV part is mainly composed of LCD image process, audio process and amplified

circuit, MCU controlling circuit. 2. DVD part in terms of design requirement decode circuit, servo circuit.3.DVB

circuit DVB circuit is mainly composed of channel encoder and TS flow decoder and all the above functions of the

player are used.

Rmark:LD1006SI reduces DVB function based on LD1006TI, Lt1000 reduces DVD function based onLD1006si

with a same working principle with LD1006sI, this troubleshooting manual is available for

LD1006SI/LT1000/ld1006ti

U602

TUNER

AIN2_DWMOD1

U603 DIB3000P

U116 MT8606

XIDD8

DVB/CARD switch changing U702

MSD0

CARD BOARD

Ba6849

MAIN AXIS DRIVING

DVD LOAD

AIN1_DWMOD1

X602

20.48MHZ

TSDATA0 TSDATA7

XIDD0 XIDD15

XIDD0

GPIO 3

GPIO 4

DVB PART

MSD1

DMSO

LOAD+

LOAD-

DFA[0:20] DFD[0:7]

DVD DECODE LOADER

FOSO TRSO FMSO TROPEN

Ba5954

U402

SERVO DRIVING

U302 DVD FLASH

Mt1389

A/B/C/D/E/F

TK+

TK-

FC+

FC-

226 224

DVD PICK_UP

GPIO24 AUDIO B

GPIO25_AUDIO_A

KEY BOARD

1389_DTVCVBS

1389_C

1389_Y

VSTB VSCK VSDA

89_TXD

89_RXD

DDQ[0:15]

DMA[0:11]

E2SCL

E2SDA

89_AL

89_AR

ATV5V

CPU5V

KEY_SARO

KEY_SAR1

AVIN

TSDA TSCL

CCFL_GPIO

PS_OFF

ASW

BAT_LOW

DTVPW

TUNERPW

717_MUTE

VOLUME_PWM

J112

U301

SDRAM

U303

EEPROM

24C16

U406

AUDIO AMPLIFIED CIRCUIT

U113

TEA5764

TDA9886

AV INPUT TERMINAL

U601

J110

4580

TVSCL_TX TVSDA_RX

Mt1389

TDA9886

J110

INPUT

23 24

TV_AUDIO

AVIN AVIN-R

AVIN

U101 MST717 LCD IMAGE PROCESSOR& MCU

89AL 89AR

FM-R FM-L

1389_OUT

TV_OUT

AVIN_OUT

-L

U702

IC-BA7 644AN

VIDEO OUTPUT SWITCH CHANGING

ELECTRONIC SWITCH

U114

Cd4052

CSN SDO SDI

SCK

X101

12M

DRIVING BOARD

Q117

OUTPUT VIDEO AMPLIFIED CIRCUIT

AUDIO OUTPUT AMPLIFIED CIRCUIT

Q115/Q1 16

AUDIOINL

AUDIOINR

U202 FLASH PS25LV010

G0 G7

B0 B7

R0 R7

V1 V17

VCOM

VGH

VGL

EDGSL

DENA VLCD INV

U203 EEPROM 24C16

OUT-L

OUT-R

J111 AV OUTPUT TERMINAL

AUDIO AMLIFIED

APA2068

PANEL

INVERTER

BOARD

MUTE CONTROL CIRCUIT

Q1/Q909

Picture3.1.2.2.1 diagram of the player

- 15 -

3.1.3 Account for player key IC function:

SN Material Number Material Name Specification Type Number Instruction

Function Instruction

Remark

1 0883272 IC AZ78L05 TO-92 U111 5V voltage stabilization IC:CPU5V Standby Voltage 2 0881604 IC AT24C16 SOP U303 DVD EEPROM: store information set by users DVD 3 0880768 IC C4558 SOP U406 operational amplifier: DVD audio signal amplify DVD 4 0880839 IC CD4053 SOP U703 electronic switch:DVB/CARD change-over switch DVB 5 0881378 IC BA5954FP HSOP U402 driving IC:DVD servo driving DVD 6 0881513 IC BA6849FM HSOP U403 driving IC: main axis driving DVD 7 0881674 IC LM393D SO8 U2 operational amplify: power detect 8 0882262 IC K4S641632H-TC60 TSOP U301 SDRAM:DVD SDRAM DVD

9 0882644 IC MT1389FE/H(HD version) QFP U401 DVD decode chip DVD 10 0882843 IC AZ1084-ADJ TO-252 U405,U610,U611 voltage stabilization IC 11 0882483 IC AZ1085S-3.3 TO-263 U404 voltage stabilization IC DVD

12 0882515 IC HEF4052BT SOP U114,U608,U701

electronic switch:DVB/CARD switch ueberschall

switch

DVB

13 0882945 IC MP1430DN SOP U115,U116 5V voltage stabilization IC:ATV5V,DTV5V

14 0790126 SMD field effect transistor FDS9435A SOP U113 power switch control: standby control circuit

15 0883277 IC BA7644AN SIP U702 video electronic switch: video output circuit 16 0883168 IC DIB3000P LQFP U603 DVB core chip for LD1006TI 17 0883260 IC APA2068 SOP U1 audio amplifier: driving loudhailer 18 0883166 IC MT8606 LQFP U501 DVB signal process chip for LD1006TI 19 0883167 IC TDA9886 SOT340-1 U601 middle frequency amplify and AV separation circuit for analog TV 20 0880165 IC 74HCU04D SOP U502 inverter: for clock circuit

21 1000069 surface acoustic wave filter VF389A1D SIP5K U607

surface acoustic wave filter: for separating sound and

image

for analog TV

22 1000068 surface acoustic wave filter AF389A1D SIP5K U606

surface acoustic wave filter:for separating sound and

image

for analog TV

23 1020081 tuner TD1316AF/IHP-3 U602

change high frequency signals into middle frequency

signals

different between common TV

and DVB

24 0880504 IC 24C32N SOP U203 TV EEPROM: store information set by users on driving board 25 0882485 IC AZ1117H-3.3 SOT-223 U204 voltage stabilization IC on driving board 26 0883143 IC AZ1117H-2.5 SOT-223 U206 voltage stabilization IC on driving board 27 0883269 IC AIC1899 SOT-23-6 U207 DC-AC invert circuit on driving board 28 0883164 IC MST717A PQFP U201 MCU&LCD drive on driving board

29 0882923 IC EN29LV160AB-70TCP TSOP U302 DVD FLASH store DVD soft ware software needed to be burned

30 0883190 IC PM25LV020 SOP U202 TV ROM store TV software software needed to be burned

31 0881473 IC 12C508A S0P U112

standby control IC

software needed to be burned

- 16 -

Section Two Principle of TV part unit circuit

3.2.1 System control circuit

System control circuit is mainly composed of clock circuit, software program, EEROM and

MCU MST717 buit in . MST717 with built-in MCU is mainly responsible for coordination and

controlling of the player system MCU externally connecting with a 2M ROM is used to store

programmecontrol function of the player, MST717 externally connecting with a 16k EEPROM is used to

store information set by users. The system control circuit of the player is on driving board, meanwhile

driving board also consists LCD driving circuit.

1. System power supply circuit

(1)system power supply circuit is shown in picture 3.2.1.1:

Picture3.2.1.1 system power supply circuit

Working principle: when standby state of the player enters into power on, power supply outputs ATV5V

voltage through switch (U113) on main board and voltage stabilization (U116 and its peripheral

elements) to U204,U206 on driving board for separately voltage stabilization. Output voltage of +3.3V

+2.5V provide power for MST717. U204 and U206 is a 3-ended voltage stabilization IC.

- 17 -

2. System clock circuit

1 system clock circuit is shown in picture 3.2.1.2:

120

MST717

121

Picture3.2.1.2 system clock circuit diagram

2 working principle the clock circuit is mainly composed of X201 and C201 C202. X201 is a crystal 12MHZ

oscillator C201 C202 are two externally connecting resonance capacitance which produce a 12MHZ clock signal to

provide clock signal needed by the signal for MST717. And the clock signal is produced by internal multi-frequency

circuit and used as working clock.

3. System control circuit

1 system control circuit diagram is shown in picture 3.2.1.3:

KEY-SARO

BUTTON BOARD

POWER DETECT CIRCUIT

REMOTE CONTROL CONTACT BOARD

MT1389HD

U114/U702

Cd4052/BA7644 AUDIO/VIDEO SELECT CIRCUIT

MUTE CONTROL CIRCUIT

KEY1-SAR1

BAT-LOW

IR_INT

VSTB

VSCK

VSDA

GPIO25-AUDIO-A

GPIO24-AUDIO-B

717MUTE

MST717

MCU

U201

SCL_TX

SDA_RX

ASW

DTVPW

CCFL-GPIO

PS-OFF

Volume_pwm

TUNERPW

SPICZ

SPIDO

SPIDI

SPICK

UPGRADING SOCKETJ112

DVB

µçÔ´¿ØÖÆµçÂ·

VOLTAGE RISING COMPONENT

STANDBY CONTROL CIRCUIT

APA2068 AUDIO AMPLIFIED CIRCUIT

TUNER POWER CONTROL CIRCUIT

U202

PS25LV010

SOFTWARE PROGRAMME

Picture 3.2.1.3 system control circuit diagram

- 18 -

2 Working principle

System control circuit of the player is composed of MST717 built-in MCU and software programme and other

elements

Machine power on: Power supply provides 12V power through adapter and output +5V power to standby control

circuit after U111 voltage stabilization. After receiving instruction from panel or remote control, standby control circuit

outputs POWER_ON signal, which controls power control switch U113. Then system control circuit of machine

starts MST717 to work. All module circuits in diagram is controlled by MCU, which is responsible for function

control of the player.

4.IIC bus control circuit

1 Diagrm of IIC bus control is shown in picture :3.2.1.4

U603

DIB3000P

U608

TUNER

Cd4052

U303

AT24C16

TDA9886

Mt1389

MST717

U203

24C16

Picture 3.2.1.4 IC bus control circuit diagram

2 . Working principle

IIC bus is a simple bidirectional two-wire developed by PHILIPS company, which is synchronous

TSDA

TSCL

TEA5764

U903

U112

12C508A

serial bus. It only needs two wire serial clock wire and serial data wire to transmit information

between elements connecting with bus. The bus is high performance serial bus, which compatible with

judgement needed by multi-mainfrme and super low speed facility synchronization functions, which is

broadly used. As is shown in picture 3.2.1.4, U203 is a 16K storage and is mainly used to store

information from users.

- 19 -

3.2.2 Audio circuit

Audio processing circuit is mainly responsibility for audio switch, amplifying, and restoring analog

audio. It is mainly composed of audio input selection, audio amplify circuit and mute control circuit,

shown in figure 3.2.2.1:

EXTERNAL INPUT TERMINAL

J110

TUNER IC TEA5764

TUNER

Mt1389

89_AL

89_AR

FM_R

FM_L

U601

TDA9886

1.TV audio processing circuit

AVIN_L

ANIN_R

TV_AUDIO

89AL

U406 4558

89AR

Figure 3.2.2.1 audio processing block diagram

Cd4052

ELECTRONIC

SWITCH

AUDIOINL

AUDIOINR

AUDIOINL

AUDIOINR

APA2068

AUDIO AMPLIFY

AUDIO OUTPUT AMPLIFY CIRCUIT

Q115/Q116

16 14

J111

AUDIO OUTPUT SOCKET

Working principle: when player is set in TV or DVB state, tuner transfers received high frequency TV

signals into middle frequency signals and amplify signals outputted by tuner through amplified circuit

composed by Q603. The amplified signals input to TDA9886 for processing through U607 and separate

audio/video signals. Audio signals outputted from pin8 of TDA9886 input to Cd4052 and output after

Cd4052 selection and then input to amplify circuit composed by APA2068 and Q115/Q116. Audio signals

amplified by APA2068 directly drive loudhailer to sound. Audio signals amplified by Q115/Q116 output to

external facilities to use.

2 “ Line-in selection” processing circuit ueberschall selection circuit is composed of U114 and its

peripheral elements. When machine is set in DVD state,CPIO24 AUDIO B/GPIO25 AUDIO A output

low level. Pin 9/10 of U114 is transformed into high level after changed by Q119/Q118. According to truth

table of Cd4052, it can be estimated that pin 13/3 of U114 separately output audio signals input

fromX3/Y3 ports to finish audio input selection function, which is shown in figure 3.2.2.2

- 20 -

Figure 3.2.2.2 ueberschall selection circuit

GPIO24_AUDIO_B GPIO25_AUDIO_A FUNCTION

DVD

AVIN

3.Audio amplifying circuit

1 Audio amplifying circuit is shown in figure3.2.2.3:

Figure 3.2.2.3 Audio amplifying circuit

- 21 -

2 Working principle APA2068 is a Stereo 2.6W Audio Power Amplifier. Audio signals input

through pin3,pin6 of APA2068 and output from pin 9,13,14,15 of APA2068 after amplified by internal

audio to drive loudhailer to sound. This IC adopts +5V to provide power. Pin 1 is mute control pin high

level is effective. For more details, please reference to mute circuit working principle. Pin 7 is PWM volume

control pin. The lead feet control signals are directly controlled by MST717.PIN 13 IS Output mode

control input, high for SE output mode and low for BTL mode.SE output mode directly drive earphone to

output.

4. Mute control circuit

1 Mute control circuit block diagram is shown in figure3.2.2.4:

2 working principle power-on mute:when machine is on from standby mode into power-on,

CPU+5V saturated on Q909 and cut off Q1 through R941 function. MUTEAMP is high level, and IC-

APA2068 enters into mute state to realize power-on mute function. When machine is power on normally,

ATV5V normally output and Q907 is saturated on. HW-MUTE is low level, and machine sound is

normally outputted. Mute is needed in normal working, MST717 outputs a high level signal, then Q909 is

saturated on/Q1 is cut off. MUTEAMP is high level. IC-APA2068 enters into mute state. When user

cancels mute, 717-MUTE becomes low level and sound output is normal.

Power-off mute: when machine is power off, as Ce914 is fully charged when machine is on,CE914

discharges through Q908/D904 to saturate on Q909. At this time pin 1 of IC-APA2068 keeps a high level to

realize power-off mute function. Mute circuit of DVD part is controlled by MT1389.

Figure 3.2.2.4 mute control circuit

3 Block diagram of audio output amplifying circuit is shown in figure 3.2.2.5 Working

principle As it is shown in figure, it is a single tube amplifying circuit composed by triodes.which is

mainly used for audio output amplify. As it is shown in figure,Q116/Q115 are amplifying

tube,CE303/CE305 is blocking capacitor, Q120/Q121 are mute tubes with a main function of power-

on/off mute. Audio signals outputted by the circuit is used for audio output.

- 22 -

Figure3.2.2.5 Audio output amplifying circuit

3.2.3 Video circuit

Video circuit consists video amplifying/ filter circuit, video output switch circuit, LCD image processing

circuit. Video circuit block diagram is shown in figure 3.2.3.1:

MT1389_C

DVD VIDEO

Mt1389

EXTERNAL INPUT VIDEO

J110

Tv VIDEO

U602/

TDA9886

J111

VIDEO OUTPUT TERMINAL

YUV3

CVBS

MT1389_Y

VIDEO SIGNAL AMPLIFYING

Q114

VIDEO SIGNAL AMPLIFYING

VIDEO AMPLIFYING Q117

Q410

Q601

1389_DTVCVBS

AVIN

1389_OUT

AVIN_OUT

TV_OUT

VIDEO ELE

-CTRONIC SWITCH

BA7644AN

X101

12MHZ

U201 MST717 LCD IMAGE PROCESSOR & MCU

G0 G7

B0 B7

R0 R7

V0 V7

VCOM

PANEL

Figure 3.2.3.1 Video circuit block diagram

- 23 -

1. Video input and video processing circuit

This circuit is mainly composed of BA7644AN , MST717 and other elements, MST717 supports

NTSC, PAL, and SECAM three modes video signal. And its supporting video signal formats are RGB,

YPbPr, CVBS, or S-video video built-in A/D convertor, which can realize many formats switching

function. MST717 is built in MCU, and MST718 also has video output function. Output interface consists

TTL, LVDS, TCON multi-modes. When machine is set in DVD or DVB state, Y C signals input into

internal A/D converting circuit of MST717. Multiple video signals input into pin 1 of Ba7644 and output

from pin 19 after selected by electric switch (Ba7644) and output to external facilities through output

terminal after amplified by amplifying circuit, which is composed by Q117.

2.LCD image processing circuit

LCD image processing circuit is composed of MST717 and its peripheral elements. It is mainly

responsible for transforming anolog video signals inputted from external into signals needed by LCD

driving. MST717 is a high performance, high integrity image processing loader designed for LCD, which

can support SVGA format, multi-output display interface supporting TTL LVDS RSDS . This

machine adopts analog signal input, MST717 built-in MCU, MST717 has multi-format output display

interface. TTL output format is adopted in this machine, and output method can be adjusted through

software according to driving way of screen.MST717 outputs R0~R7/G0~G7/B0~B7 separately to drive

display screen.

3. Block diagram of video output circuit is shown in figure 3.2.3.2:

Working principle: external input video signals and machine built-in DVD/TV signals separately input

to MST717 and video output circuit after amplifying.Signals inputted to MST717 are transformed into

digital video signals through A/D converting circuit inside MST717 and transformed into LCD driving

signals through internal processing circuit. Meanwhile each channel video signals input into output

selection circuit, which is composed of U702 and its peripheral elements. The controlling signals of the

circuit are from MCU ,and are controlled by MCU with audio electronic switch. Video output amplifying

circuit is composed of Q117 and its peripheral circuit, which is a fixed biased circuit to upgrade driving

ability of video signals. Other working principle of video amplifying circuit is almost the same, we do not

describe in details.

3.2.4 Input circuit

1. Block diagram of external input circuit is shown in figure 3.2.4.1: this TV version has multiple input

ways because of its multiple performance. External input of this machine has multiple video, and built-in

function input has DVD/TV and other ways.

2.Working principle: this circuit is a typical fixed biased amplifying circuit with a main function of current

amplifying and upgrading load carry ability of circuit. Q114 is an amplifying tube,R21 is carrying

impedance resistor, Ce309 is coupling capacitor with a blocking function. External inputted multiple video

signals input intoMST717 after amplifying.

- 24 -

Figure 3.2.3.2 Video output circuit

Figure 3.2.4.1 External input amplifying circuit

- 25 -

2.TV tuner circuit

1 Block diagram of tuner circuit is shown in figure 3.2.4.2:

Figure 3.2.4.2 TV tuner circuit

2 working principle This tuner does not consist middle frequency amplifying circuit. It adopts IIC

bus way for function control eg. Channel selection, automatic channel searching, etc.). U608 is a

electronic switch, which is used for switching IIC bus. When machine is switched into DVB state, tuner is

controlled by DIB3000P. When machine is in TV state, IIC bus is directly controlled by MST717 to operate

channel selection and other performance .High frequency signals output from pin8 of U602 after tuned.

Controlling function of DVB parts is explained in DVB part circuit. Tuner lead feet function is introduced

in annex.

3. Analog TV signal processing circuit is shown in figure 3.2.4.3:

Working principle: signals outputted by tuner input into U607(sound surface filter) and to

U601(TDA9866) directly through U607. TDA9886 is a middle frequency amplifier and able to separate aio

and video signals at the same time. After filtered and processed by TDA9886, mixed signals outputted

by tuner output video signals from U601_17 through sound surface filter. Outputted video signals output

video processing circuit after amplified by elements composed by Q601 machine and peripheral

elements. Audio signals output from pin8 of TDA9886 to audio processing circuit.

- 26 -

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