BBK LD-1506-X Service manual

LD1506X(RU)

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

2.1 Section One TV Segment

2.1.1 Features

2.1.2 Set list

2.1.3 Controls and functions

2.1.4 Connection and starting

2.1.5TV mode

2.1.6 PC monitor mode

2.2 Section Two DVD Segment

2.2.1 Controls and functions

2.2.2 Function settings

2.2.3 Others

Chapter Three Principle and Servicing

The previous manual: TV part

Section One Principle of the player

3.1.1 System control principle

Overall wiring diagram

3.1.2

3.1.3 Block diagram of the player

3.1.4 Audio circuit

3.1.5 Power circuit

3.1.6 Video circuit

Section Two

Section Three

The next manual: DVD part

Section One Principle of the player

Troubleshooting flow chart

Waveform diagram

3.1.1 Audio circuit

3.1.2 Video circuit

3.1.3 Servo circuit

3.1.4 USB/CARD circuit

3.1.5 Decode circuit

Section Two Troubleshooting flow chart

Section Three

Chapter Cinque PCB board & Circuit diagram

Section One PCB Board

Section Two Circuit diagram

Chapter Six BOM List

Chapter Four Block Diagram of Play Disassemblyand Explosion

Waveform diagram

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.

- 1 -

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.

- 2 -

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

- 3 -

Chapter Two

Functions and Operation Instructions

2.1 Section One TV SEGMENT

2.1.1 Features

Technical Features

#High quality color TFT panel(15 inch for LD1506X, 19 inch for LD1906X and inch for LD2006X.) #Maximum resolution 1024X768 for LD1506X,1440X900 for LD1906X,640X480 for LD2006X. #Built-in DVD player with Slot-in mechanism #Multisystem TV tuner with NICAM decoding #Biuilt-in stereo audio system #USB port to playback compatible files stored on flash memory of external devises(All modes

have two USB ports, with external HDD power supply.) #Composite video ,audio input #Component, RGB/SCART and VGA(Only for LD1906X and LD1506X)video inputs #Digital coaxial output for multi-channel sound playback #Headphones output #Universal holder for furniture or wall fixation with 270 rotation angle

TV Channels Receiving and External Signal Playback

#Automatic and fine tuning functions with 100 channels memory #Adjustable brightness, contrast, saturation, hue and 4 preset image settings #Tone and sound balance adjustment and 4 preset audio settings

Disc playback mode

#Digital video playback: DVD-Video, Super VCD, VCD compatibility #MPEG-4 standard support #Digital audio playback: CD-DA, and HDCD 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 ID3-tags and CD-Text support

simplifies device operation #”Q-Play” function provides direct playback and allows to skip commercial that is not possible to rewind #”Browser” function provides easy access to playback control #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

PC monitor mode(Only for LD1506X and LD1906X)

#Wide resolutions range #RGB setting and 4 presets of color temperature #Tone and sound balance adjustment and 4 preset audio settings #External audio signal playback.

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2.1.2 Set list

LCD TV Remote Control AAA Battery Power Adapter(only for LD1506X and LD1906X) Power Cord(only for LD1506X and LD1906X) RCA-RCA cord 2XRCA-2XRCA cord Microphone Microphone cable Wall Mount Holder Kickstand Screw M5X15 Screw M4X10 Screw PA5X25 Screw PM4X10 Expandable pipe User manual Warranty Card

2.1.3 CONTROLS AND FUNCTIONS

(1) Panel controls and indication

1pcs 1pcs 2pcs 1pcs 1pcs 1pcs 1pcs 2pcs 2pcs 1pcs 1pcs 1pcs 1pcs 4pcs 4pcs 4pcs 1pcs 1pcs

For LD1506X

For LD1906X and LD2006X

Front panel(Panel controls and indication depend on a model of LCD TV.)

Left panel

SETUP button

Press to switch to setup mode

_VOL+button

Press to adjust the volume.

- 5 -

_CH+button

Press to switch between channels/to

choose menu item.

SOURCE button

Press to choose the playback mode.

STANDBY button

Press to switch on the device/into

standby mode.

POWER button

Turn on/off the power.

Headphones output

Microphone input 1

Microphone input 2

Front panel

Remote control sensor

Power supply indicator

(2) Remote control general view

Right panel

Disc tray

USB port

EJECT button

Press to open/close the disc tray.

STOP button

Press to stop the playback.

PLAY/PAUSE button

Press to playback/pause.

EJECT button

Press to open/close the disc tray.

LANG button

Press to change language.

DISP button

Press to display the disc information.

NICAM button

Press to choose audio mode.

Numeric buttons

BROWSE button

Press to turn on/off the browser function.

CURSOR buttons (UP/ DOWN/ LEFT

/RIGHT) OK button

SETUP button

Press to switch to setup mode.

Button

Press to turn on/off the “Virtual Keyboard” function.

SOURCE button

Press to change the TV /DVD /AV/ SCART/ YPBPR /VGA/ mode.

Button

Press to start rewind/rewind scanning.

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.

- 6 -

USB/DVD button

Press to select USB/DVD mode.

Button

Press to skip forward.

Button

Press to stop the playback.

Button

Press to forward scanning.

Button

Press to playback/pause.

ZOOM+/-button

Press to zoom in/out.

CANCEL button

Press to go one level back/cancel current operation.

CH button

Press to switch between channels /to choose menu item.

MENU / button

DVD disk menu/PBC function/Press to return to the previous channel.

Q-PLAY button

Press to turn the Q-PLAY mode on.

KARAOKE button

Press to change the subtitles language.

SUBT button

Press to change the subtitles language.

Button

Press to switch on the device/into standby mode.

2.1.4 CONNECTION AND STARTING

SELECT RETURN

ENTER

SETUP

(1 )Switching interfaces

For LD1506X and LD1906X

SCART socket

Meant for external audio video signal source connection. There is no need to use additional audiocord.

Y Cb(Pb) Cr(Pr)

PC AUDIO IN

Meant for PC stereo audio output connection.

COAXIAL OUT

Meant for multi-channel sound playback.

AUDIO VIDEO IN

Used for external signal source connection.

12 V socket

Meant for adapter connection.

2.1.5

TV MODE

This LCD TV can store up to 100 channels and enables to scan channels thought automatic, manual and fine tuning scanning mode. Built-in TV tuner supports stereo audio playback in NICAM system.

(1) Adjusted channels selection

#Press +CH-buttons on the left panel or CH

buttons on the remote control each time, when you want to change a channel.

#Use numeric buttons 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. #Turn to Picture item on this page for details.

For LD2006X

RF input

Meant for antenna connection.

VGA port

Meant for PC connection.

(3) Default sound settings selection

#You may select one of the default sound

settings: USER, MUSIC, FILM and NEWS. #You may adjust necessary parameters in the

device menu. #Turn to page.13 for details.

- 7 -

(4 )Accompanying sound type #Only some of the TV channels have stereo

accompanying sound in NICAM system.

#Press NICAM button to select accompanying

sound.

(5 ) TV settings

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

+CH-buttons on the left 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.

(6) Picture

#Select PICTURE item to adjust picture parameters.

#You may adjust BRIGHTNESS, CONTRAST,

SATURATION, TINT, SHARPNESS and COLOR TEMP.

(8) TV setup

Select TV SETUP item to adjust channels. CHANNEL, COLOR SYSTEM, SOUND SYSTEM, FINE TUNING, AUTO SEARCH, MANUAL SEARCH and CHANNEL EDIT.

#CHANNEL item enables to select the number of

adjustable channel.

#CHANNEL EDIT submenu enables to select,

skip and swap the channel.

RETURN

SETUP

#CHANNEL parameter enables to select current

channel.

#SKIP function enables to make current channel

inaccessible while using +CH-button to browse channels.

NOTE

You can’t adjust TINT while watching TV

channels.

(7) Sound

#Select SOUND item to adjust sound

parameters.

#You may adjust BALANCE, BASS, TREBLE

and NICAM.

ATTENTION! We recommend watching TV at halfof maximum level of the sound. Continuous listening at higher level may lead to hearing reduction.

#SWAP function enables to select the channel

number to swap with current channel.

#SAVE parameter enables to confirm the swap

function.

#FINE TUNING 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.

#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, Land I.

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(9) Function

You may select LANGUAGE,

TRANSPARENCY, SLEEP and RATIO.

#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(only for LD1906X)item can be changed

between 16:9 and 4:3.

#RESET item enables to reset all values to

default.

(2)Sound

Select SOUND item to adjust sound

parameters.

You may adjust BALANCE, BASS, TREBLE

and NICAM.

(10) Video settings

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

menu is the same as the menu, described on

pages 12and 13.

NOTE

In external video signal playback mode TV

SETUP item is inaccessible.

2.1.6 PC MONITOR MODE

(only for LD1506X and LD1906X.)

(1)Picture

Select PICTURE item to adjust picture

parameters.

You may adjust BRIGHTNESS, CONTRAST,

COLOR TEMPERARURE and AUTO CONFIG.

#Select COLOR TEMPERATURE subment to

adjust color temperature of the picture.

#COLOR TEMP. Item can be set to :USER,

NORMAL, WARM and COOL.

#RED, GREEN and BLUE items enables to

adjust RGB value of color temperature.

#Use AUTOCONFIG to configure display

parameters automatically.

NOTE:

The picture can be displayed incorrectly

while adjusting.

(3)Monitor setup

Select MONITOR item to adjust such parameters as PHASE, FREQUENCY, HPOSITION and V-POSITION.

(4)Function

You may select LANGUAGE, TRANSPARENCY, SLEEP and RADIO. #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(only for LD1906X) item can be changed

between 16:9 and 4:3.

#RESET item enables to reset all values to

defaule except ratio function.

- 9 -

2.2 Section Two DVD SEGMENT

2.2.1 Controls and functions

Front panel controls

For LD1506X

For LD1906X and LD2006X

USB port

EJECT button

Press to open/close the disc tray.

STOP button

Press to stop the playback.

PLAY/PAUSE button

Press to playback/pause.

Disc tray

Two USB ports

Disc tray

EJECT button

Press to open/close the disc tray.

STOP button

Press to stop the playback.

PLAY/PAUSE button

Press to playback/pause.

Note: This model does not support the 8cm disc. Do not insert that type of disc into this device to avoid disc jam.

2.2.2 FUNCTION SETTINGS

(1) Function selection and change

#Press the SETUP key to show the setup menu. You will see the following image on the screen, as show

on the figure:

#Select the desired menu item using the UP/DOWN buttons button; press the OK key for confirmation.

1.For example, if you wish to change the image settings, you have to select the image item and press the OK or RIGHT key.

Language

Image

Sound

Playback

Karaoke

Preference

Parental control

Initial help

Reset settings

Exit

Setup menu

DVD menu

Sound track

Subtitle

Mp4 Subtitles

4:3

Off.

+48

AUTO

PAL

NTSC

TV system

TV format

Off

- 10 -

Sharpness

Gamma

Brightness

Contrast

Hue

Saturation

AUTO

2.Using the UP/DOWN buttons, select the

desired item and press OK or RIGHT button. For example, select the Sharpness item. Settings will appear on the screen. Then select the desired sharpness level and press OK for confirmation.

TV system

TV format

Sharpness

Gamma

Brightness

Contrast

Hue

Saturation

AUTO

4:3

Off.

+48

High

Medium

Low

3. Press LEFT for exit to previous menu level.

4. Press SETUP to exit setup menu.

(2) Language settings

1. Setup menu: interface language set-up

#Options: Russian, English, Ukrainian,

Romanian.

#Default option: English.

Setup menu

DVD menu

Soundtrack

Sbutitles Off

English

#If the language you selected is not recorded on

the DVD disc, another available language will be displayed.

5.MP4 Subtitles: selection of subtitles language #Options: Russian, English, Ukrainian and

Romanian.

#Default option: English.

(3) Image settings menu

1. TV system: TV system selection

#Options: Auto, PAL, NTSC. #Default option: PAL.

2.TV Format: image ratio settings

#Options: 4:3 pan& scan, 16:9 letterbox and 16:9

TV,4:3 LB. #Default option: 4:3 LB. #Some discs are recorded with support of only

one ratio. The selected ratio must comply with the TV screen.

TV system

TV format

Sharpness

Gamma

Brightness

Contrast

Hue

Saturation

Auto

4:3 LB

Off.

AUTO

PAL

NTSC

2.DVD menu: selection of disc menu language

3. Sound: selection of translation language

#Disc menu/translation language options:

Russian, English, Estonian, Lithuanian, Kazakh, Romanian, Belarusian, Ukrainian, Chinese, Others.

#Default menu/translation language option:

English.

#Selection of other languages: select the

OTHERS item using the wheel and press OK. Enter the language code using the numeric buttons and press OK.

#If the language you selected is not recorded on

the DVD disc, another available language will be used.

4. Subtitles: selection of subtitles language

#Options: Off, Russian, English, Estonian,

Lithuanian, Kazakh, Romanian, Belarusian,

Ukrainian, and Chinese. #Default option: off. #Selection of other languages: select the

OTHERS item using the wheel and press OK. Enter the language code using numeric buttons and press OK.

3.Sharpness: image sharpness adjustment

#Options: High, Middle, Low. #Default option: Middle.

4. Gamma: adjustment of image color temperature

#Options: High, Middle, Low, Off. #Default option: Off.

5.Brightness: adjustment of image brightness

6.contrast: adjustment of image contrast

7.Hues: adjustment of image hues

8.Saturation: adjustment of image saturation

Adjustment of image brightness, contrast, hues and saturation: #Select the desired item of the image adjustment

section using the UP/DOWN buttons. Press OK or RIGHT key to start adjusting the relevant

option. #Change the option value using the wheel. #Upon completion press the LEFT button of the

UP/DOWN buttons to return to image setup

menu.

(4) Sound settings menu

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1.Digital audio output a).SPDIF format: set-up of digital audio output options.

#Options: RAW, PCM. #Default options: RAW. #When you select the RAW option, the not

decoded signal is transferred to the LCD Tv’s digital outputs, the decoded signal is transferred to analog outputs. Decoding is performed by the built-in decoder of the LCD TV. This feature is meant to ensure that signal decoding at digital outputs is performed by an external device(e.g.an amplifier).

#If you select the PCM option, a PCM coded

signal will be transferred to the LCD Tv’s digital outputs.

Digital output

Tuning

SPDIF format

LPCM

RAW

48kHz

B)LPCM:set-up of digital audio output options to comply with different amplifiers and receivers.

#Options: 48kHz 16 bit, 96 KHz 24 bit,192kHz 24

bit.

#Default option: 48kHz 16 bit.

2. Sound correction A)Equalizer: equalizer modes

#Options: Off, rock, pop, live dance music, Techno classics, soft . #Default option: off.

B)Echo: echo effects

#Options: Off, concert, living room, hall, Bathroom, cave, arena, church. #Default option: off.

C)Tone balance: adjustment of tone balance level.

#Adjust the tone balance level using the cursor

buttons. #Press the LEFT button to return to sound correction set-up menu.

(5) Playback settings

1. DVD

Advertisement skip: skip the unskippable

block while playing a DVD disc.

#Options: Yes, No. #Default option: number

2. VCD/SVCD PBS menu: PBC menu on/off

#Options: On, Off. #Default option: On.

#If On option is set, while reproducing discs, a

menu will appear, in which you can select the order of playing the disc content. If the Off option is set, the reproducing of content is performed in the order, in which it is recorded

DVD

VCD/SVCD

Files

Repeat

All types

Advertisemenu No

off

3.Files: selection of reproduced files on the disc

#Options: Audio, Pictures, Video, All types. #Default option: All types.

4.Repeat: file repeat mode

#Options: Off, Single, All. #Default option: Off.

(6) Karaoke settings menu

1.Microphone: microphone on/off

#Options: On, Off. #Default option: On.

2.Kar.help: karaoke -disc playback mode #Options: L Channel, R Channel, No ast, No voc. #Default option: No voc assist.

Microphone

Kar.Help

Volume

Echo

No ast.

3.Volume:

Microphone: microphone sound volume level

#Using the UP/DOWN buttons adjust the

microphone volume level.

#Press LEFT key of the UP/DOWN buttons to

return to karaoke settings menu.

4.Echo:echo level while playing the karaokedisc

#Adjust the echo level Using the UP/DOWN

buttons.

#Press LEFT key of the UP/DOWN buttons to

return to karaoke settings menu.

Off

- 12 -

Sign of trouble Cause of trouble Act ions t o ellminate the t rouble

No sound

1.Poor audio cable c onnect ion.

2.Dis c dirt y or damaged.

3.Sound disabled by the MUTE button.

1.Mak e proper connect ion.

2.Clean the disc .

3.Pres s t he MUTE button.

(7) Preference settings

1.Screensaver: screen saver on/off

#Options: On, Off. #Default option: On.

2.Gr.equalizer: spectrum analyzer

#Options: On, Off. #Default option: Off.

Screen saver

Gr.equalizer

Off

(9) Initial setup menu

#Press the RIGHT key to enter the initial settings

menu, then select the desired item using the cursor buttons and press OK key for confirmation.

#While being in this menu section, you cannot

return to the previous level by pressing the

Auto

PAL

NTSC

(8) Parental control settings

1.Category: set-up of age restrictions to prevent children from seeing undesirable discs.

#Options: Any, Kid, G,PG, PG-13, PGR, R, NC-

17.

Allowed..

Set password

2.Change password: set-up of a four-digit password to change the level of age restrictions.

#Default option: 7890

Old password

New password

Verify

Any

any

Kid

PG-13

PGR

NC-17

Cancel

(10) Reset settings to default

#Resetting all settings and restoring default

options, except age restrictions level and

Password.

Load factory settings

OK Cancel

(10) Exit settings menu

#Select the exit item using the UP/DOWN

buttons and press the OK key to exit the menu.

Language

Image

Sound

Playback

Preference

Parental control

Initial setup

Reset to defaults

Exit

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.

- 13 -

No image

1.Poor video cable c onnect ion.

2.Incorrect setti ngs 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 s etti ngs of your TV s et.

3.Place 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 stem selec ted.

2.Color level on the TV set adjust ed incorrec tly .

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

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

Disc s c annot be read

1.Disc not insert ed.

2.Disc ins erted inc orrectly.

3.Condensat e on the DVD player's laser head.

1.Insert the dis c.

2.Inst all the di sc with t he label s ide facing up.

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

Microphone does not operate

1.Microphone is unplugged.

2.Low level of the mic rophone's sound volume.

1.Connect the mi crophone.

2.Adjust the level of the mic rophone's sound volume.

Remote c ontrol does not operate

1.Remote control is i ncorrect ly direct ed at the TV's sc reen.

2.Distanc e to the TV i s in excess of 8 meters.

3.Run out bat teries .

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

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

3.Replace both batt eries.

some functions do not work

1.Disc is recorded inc orrectly.

2.Incorrect key s equence.

3.St atic voltage on the housi ng.

1.W ait5-10 s econds and the device will automat ical ly t eturn to norm al st ate.

2.Repeat t he operation one more t ime.

3.Switch the device off for 1-2 minutes and t hen switch it on again.

Unstable image or abnormal pic ture col or

1.Incorrect TV set set ting.

2.There is s omethi ng wrong with the data i n the E P ROM.

1.Correct the TV set set tings . 2.Res et the TV set to default s etti ng.

LD1506X LD1906X LD2006X

Type class

Size(") Height(mm) Widt h(mm) Dot Pitch(H mm × V mm) Viewing A ngle(H)

228.19

304.13

0.297×0. 297 120

256.5

410.4

0.285×0. 285 170

20 306 408 0,637×0, 637 140

Frequency

Verti cal(Hz ) Horizont al(kHz ) Display color

TFT,colored ll(ISO 13406-2)

Display

50-75 30-75 16 700 000

(3)Technical characteristics

- 14 -

Maximum Dis play Mode

Resolut ion Verti cal frequenc y(Hz)

1024×768 75

1440×900 75

640×480 75

Inputs

Video

Composit e Component VGA RGB/SCART

Audio

Stereo PC audio

Others

Karaoke USB RF

Audio out puts

Headphone Digital coax ial

1 1

Color system

TV tuner Video inputs

Sound sy st em

TV tuner

Disc types

Formats

Power supply

Power Consumpt ion (Maximum)(w) Power Consumpt ion (Power Saving)(w)

Environmental considerati on

Operating t emperature(°, C) Operating humidit y(%) Stori ng temperat ure (°,C) Stori ng humidit y(%)

Dimensi ons(mm )

438.7×295. 7×73.4 498×370.6× 82.5 620×450×202

Weight

Net weight(kg) 6.5 6.9 7.9

+5 +35 10-80

-20 +45 5-95

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

DK,I,BG,L

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

Built-in DVD player

DVD-V ideo, DivX,XviD,SV CD,V CD,CDDA, HDCD,M P3, WM A,Kodak Pic ture CD,JPEG

~100-240,50/ 60

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

Power adapter

= : + 12

#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.

- 15 -

Chapter Three Principle and Servicing

The previous manual: TV part

Section One Principle of the player

3.1.1 System control principle

System control schematic diagram is shown in the figure 3.1.1.1:

Key-press board

Reset circuit

Remote control board

MT1389HD

Mute control circuit

FSAV433

KEY1~KEY5

RESET

DVSTB

DVSCK DVSDA

MUTE

ONMUTE

VS1

VS2

U104

PS25LV010

PIC

SCART JACK

B F

U101

IC-MST718MCU

T4094

Serial/parallel converter

VSDA

U102

CD4094

VSCK

X T L C S

SDA

INVERTER ON/OFF

PANEL_ON

FCLK

FDATA

FCS

ASW

8216_RST

STBY

FMUTE

Inverter components

Emitting module of RF

BH1418

PANEL_ON control circuit

DVB Moduie

STV8317

power control circuit

BH1418

Figure 3.1.1.1 System control schematic diagram

- 16 -

3.1.2 OVERALL WIRING DIAGRAM

PANEL

1234567891011

SVA150XG04TB 15 TFT

12131415161718192021222324252627282930

1210312

EARPHONE&MIC PHONE BOARD

61506-2

4941427

CN102

CN701

INVERTER BOARD

DVD LOARD

5INV203-3

5462768

DVD-PICK UP

TD-S208-62(HD62 PICKUP)2#

2380286

GND +12V +12V Brightness GND BLON GND

GND LD-DVD NC +5V MDI LD-CD VRDVD VRCD NC E +5V V20 GND F B A RFO IOA D C TKTK+ FC+ FC-

SL- SL+ LIMIT GND SP+ SP-

TROUT DISCEJT GND

+5V

TRIN GND

+5V

CN101 CN103

CN107

CN108

CN119

J501

AMPRIN+

GND

ARPLIN-

GND

AMPROUT+

GND

DET#

OKA

GND

VCC-PANEL

LVA3 P

LVA3 M

GND

LVACKP

GND

LVACKM

LVA2 P

LVA1 P

LVA2 M

LVA0 P

LVA1 M

GND

LVA0 M

GND

LVA3 P

LVA3 M

LVBCKP

LVB2P

LVBCKM

LVB2M

LVB1P

GND

LVB1M

LVB0P

LVB0M

CN111

+12V

CN2

AMPROUT-

CN113

MAIN BOARD

21901-2

4941425

CN110

CN102

CN105

CN104

CN106

LD1506X

Block diagram for machine

12VSW

CH IT

GND

S M

D2#

SB_

MSD3#

SDCLK

5449509

@5AK0833-10

POWER ADAPTER

ND G

CRAD&USB

GND

MSIN

SDCD

5449476

D1903-3

SDD3

GND

Dv33

GND

USBP

BOARD

5VEXT

GND

STBY

+5V

REMOTE BOARD

KEY1

B1506-0

5449978

DVD KEY BOARD

SW1

GND

KEY2

GND

J1903-0

SW2

41903-0

5449477

5449438

TV KEY BOARD

figure 3.1.2.1 overall wiring diagram

- 17 -

3.1.3 Block diagram of the player

BOARD

INVERTER

U104 FLASH

BLON

Brigtness

+12V

PS25LV010

LVA0 P LVA3P

SPICZ

SPIDI

SPICK

SPIDO

INVERTER_ON/OFF

Control circuit

of boost

voltageboard

VGA

JACK

KEY1

KEY2

Button board

& receiving

board of RC

7/8

9/10

12/13

PBIN

PRIN

EPR

EPB

U106

FSAV433

Video

electronic

switch

YPBPR

INPUT

JACK J105

PANEL

U103

LVBCKP LVBCKM

LVB0P L VB3P

LVA0 M LVA3M

U101

X101

LVB0M L VB3M

LVACKP LVACKM

MST718

LCD picture

processor&MCU

12MHZ

SDARX

Video

SCLTX

SCVBS+

SCVBS-

SCART

JACK

SR SGSB

SCART

RF_OUT

VIDEO

AUDIO

21901-2

24C32

EEPROM

Reset circuit

Q103 Ce101

STBY1

8216_RST

FMUTE

ASW

ONMUTE

VS1

MUTE

MST_RESET

VSCK

VSDA

T4094

U102

PANEL ON

VS2

CD4094

amplify

30/31

22/23

FMR

DRIN

FML

DLIN

TV+/TV-

U117

DVSCK

DVSDA

DVSTB

U114

TUNER

U113

TEA5764

MC4580Audio

amplifying circuit

Amplify

U112

Audio

amplify

TDA7266

Audio output

amplifying

RF_OUTPUT

LSL

LSR

BU1418

FLIN

circuit

FM Modulate

AO2L

AO2R

FRIN

STV8317

NICAM

processing

circuit

AVRIN

PCLIN

PCRIN

J103

PC AUDIO

SRIN

SIOMAD

MONOIN

U114

TUNER

AVLIN

SLIN

J105

SCART JACK

A/V input terminal

DCVBSIN+/DCVBS-

U303

U301

SDRAM

DPB

DPR

DDQ[0:15]

U302

DVD

FLASH

U115

DMA[0:11]

Mt1389

24C16

EEPROM

DSDA

DSCL

89AL

226

100

109

CS5340A/D

89AR

Convertion

ABCK

ALRCK

AMDATA

224

OKA

MIC

BOARD

61506-2

DVD

PICK_UP

A/B/C

D/E/F

FC-

FC+

TK+

TK-

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

X109

DVB Part

If1

If2

TUNER

U119

27MHZ

X602

20.48MHZ

PN2020

XIDD0 XIDD15

TSDATA0 TSDATA7

U116

MT8606

DVD decode chip

GPIO_4

GPIO_3

XIDD0

XIDD8

DVB/CARD

Conversion

MSD1

MSD0

CRAD

switch

U108/U2

BOARD

FOSO

TRSO

FMSO

TROPEN

TRCLOSE

U118

BA5954

Servo driving

DMSO

SL+

SL-

LOAD+

Tray

LOAD-

open/close

circuit

DVDLOAD

figure 3.1.3.1 Block diagram of the player

- 18 -

3.1.4 Audio circuit

Audio processing circuit is mainly responsible for the switch, amplifying and restire of audio and

composed of audio source input selection and NICAM processing circuit, audio amplifying circuit and

mute control circuit. Audio processing circuit block diagram is shown in the figure 3.1.4.1:

MT1389

ALRCK

ABCK

AMDATA

CS5340A/D conversion

OKA

MIC BOARD

61506-2

89AL

226

89AR

224

PC AUDIO

J103

U114

TUNER

SCART JACK

J105

A/V input terminal

U117

MC4580Audio amplify circuit

Figure 3.1.4.1 Audio processing circuit block diagram

DLIN

DRIN

PCLIN PCRIN

SIOMAD MONOIN

SLIN SRIN

AVLIN

AVRIN

28 29

STV8317 NICAM

92 98

processing circuit

9 10

19 20

LSL

LSR

AO2L AO2R

U112

TDA7266

Audio

amplifying

Audio output

Amplifying circuit

3.1.5 Power circuit

Power circuit supplies stable and pure power for each unit circuit to ensure normal working of the

player. Power circuit block diagram is shown in the figure 3.1.5.1:

AMPRIN+

AMPLIN+

AMPROUT+

SCART

61506-2

AMPLOUT+

IC 503

AP1506

U511

+12V

Power adapter

Standby

control circuit

AP1506

U506

INVERTER BOARD

U502

Si9435

Figure 3.1.5.1 Power circuit block diagram

+5VEXT

+12V

STBY

- 19 -

U505

AMS1117

U507

Lm1085

MST718

U513

AMS1117

U521

Lm1085

IC702

AZ1084-ADJ

3.3V

+2.5V

MST718

+3.3V

1.8V

Dv33

FOR PANEL

3.1.6 Video circuit

Video circuit is mainly responsible for the input of external video signals, the processing of video

signals send from tuner, and the drive processing of LCD screen, including video input selection, video

A/D conversion circuit, LCD picture processing circuit and video output circuit. Video circuit block

diagram is shown in the figure 3.1.6.1:

Y PB PR INPUT JACK

185

183

182

Mt1389

187

EPB EPR

Video

Electronic switch

DPB

DPR

FSAV433

DCVBSIN+/DCVBS-

U106

SCART JACK

PRIN

PBIN

X101

12MHZ

SCVBS+ SCVBS-

SCLTX SDARX

Video

amplifying

7/8

9/10

12/13

U101 MST718LCD picture processor&MCU

25 67

22/23

30/31

LVA0~3P

LVA0~3M

LVB0~3P

LVB0~3M

LVACKP LVACKM LVBCKP

LVBCKM

BIN+ BIN-

GIN+ GIN-

RIN+ RIN-

VGA-VSYN

VGA-HSYN

TV+/TV-

PANEL

VGA JACK

TUNER

Figure 3.1.6.1 Video circuit block diagram

- 20 -

Section Two Troubleshooting flow chart

[ Flow chart 1 ] Trouble symptom: standby light is not on

Trouble description: connect with power, standby indicator light is not on, machine has no response

and buttons have no function.

Machine not power on

Whether

12V voltage

outputted by power

adapter is

normal

Check

whether J501 pin 2

12Vvoltage is

normal

Check

whether U503 pin 2

5V voltage is

normal

Check

the power supply

loop from +5VEXT power

toMST718 is

normal

Check

whether standby

control signal outputted

by MST718_57 is

normal

Check power adapter

Check flat cable from power adapter to video main board

Change U503

Check power supply loop

Check

whether reset

signal of MST718

is normal

Check reset system circuit

Check

whether Q117 is

normal

Check the standby indication circuit on subsidiary board

Check

whether X101 clock

signal is normal

Change MST718

- 21 -

Check clock system circuit

[ Flow chart 2 ] Symptom: power not on

Trouble description: test after machine power on, standby indicator light is not on and +12V power

outputted by power adapter is abnormal.

Power not on

Check fuse, TC1 and rectifying bridge

Check NCP1207 and peripheral elements

Change Q1

Check

whether power

board Cn2

has 12V voltage

Check according to troubleshooting process for“player not switch on”

Check

whether power

board TC1 has 310v

voltage

Check

whether each pin

voltage of U1 is

normal

Check

whether Q1 is

damaged

Check

whether 12v

resistor to ground

is normal

Check whether filtering

capacitor TC3/TC4 has

electric leakage and

short-circuit

Check

whether VD4

has secondary

voltage

Check

whether VD4

secondary voltage is

normal

Check feedback loop U2/U3

Check whether voltage of TC2 two ends

is normal

Change L3

Change transformer

whether transformer

is normal

Check VD4

Check

END

- 22 -

[ Flow chart 3 ] Symptom: no sound

Description: there is image, but no audio output.

All input source has

no sound output

Check

whether pin 34/36

of STV_8317 has signal

output

Check

whether power

supply of power amplifier

board TDA7266 is

normal

Check STV8317 and peripheral elements

Check power supply loop of TDA7266

Check

whether TDA7266_6

pin is high level

Check

whether audio output

pin waveform of

TDA7266P is

normal

Check speaker and line

Check mute control circuit

Change TDA7266P

- 23 -

[ Flow chart 4 ] Symptom: white screen

Description: screen is white and indicator on.

White screen

Check

whether u502_D

voltage is normal

Check

whether 2.5V

voltage of pin 2 of

U507 is normal

Check

whether 3.3V

voltage outputted

by U505 is

normal

Check

whether X101 clock

is normal

whether u502_G pin is

low level

Change U502

Change U507

Change U505

Check X101/C103/C104

Check

Check Q504 and peripheral elements

Check

whether U15_37

(PANEL_ON) is low

level

Check

whether Q505_C is

high level

Change MST718

Check Q505 and peripheral elements

Check

whether drive

output pin MST718

outputs normally

Check

whether the socket and flat cable from main board to display screen

are normal

Change display screen

Change MST718

Change flat cable or socket

- 24 -

[ Flow chart 5 ] Symptom: DVD has no sound

Trouble description: when machine is set in DVD state, there is image but no sound. External input

and TV sound are normal.

In DVD state, playing is normal and there is no sound output

Check elements between CE167/CE163 and U117

Check A12V power supply loop

Check MT1389

Check

whether pin 2/6

signal input of U117

is normal

Check

pin 8 power supply of

U117 is normal

Change U117

Check

whether CE167/CE163

has audio signal

Check

whether pin 1/7 of

U117 has audio signal

output

Check

whether secondary

of TC166/CE165 has

audio signal

output

Check

whether pin 28/29

audio input of U4 is

normal

Check mute circuit

Check the line between U4

Change STV8317

- 25 -

[ Flow chart 6 ] Symptom: black screen

Trouble description: after power on, screen has no display and backlight cannot be on.

Black screen

After

power on, whether

indicator circuit working

is normal

Check

whether CN103 pin 6

power supply is

normal

Check

whether CN103_3 is

high level

Check

whether boost

board has high

voltage output

Check according to

troubleshooting flow of “Machine cannot power on”

Check 12V power supply loop

Change Q102

Check boost board

Change display screen

- 26 -

[ Flow chart 7 ] Symptom: DVD has no image

Description: DVD has no image but has sound.

DVD has no image

Whether

machine switches in

DVD state

Check

whether L195/L196/L198

has video signal

output

Check

whether pin 13/15/17

of U106 has signal

output

Change machine setup

Check Mt1389 and peripheral elements

Check U106 peripheral elements

Check

whether pin 7/9/12

input signal of MST718

is normal

Change MST718

Check components video input loop

- 27 -

+ 71 hidden pages