BBK DV718SI User manual

service manual
DV718SI

Catalog
1.1 Safety precautions
1.1.1 Power supply
1.1.2 Precautions for antistatic
1.1.3 Precautions for laser head
1.1.4 About placement position
1.2 Maintenance method
1.2.1 Visualized method
1.2.2 Electric resistance method
1.2.3 Voltage method
1.2.4 Current method
1.2.5 Cutting method
1.2.6 Element substitution method
1.2.7 Comparison method
1.3 Required device for maintenance
Chapter Two Functions and Operation Instructions
2.1 Features
2.2 Control Button Locations and Explanations
2.2.1 Front Panel Illustration
2.2.2 Rear Panel Illustration
2.2.3 LED Display Window Illustration
2.2.4 Remote Control Illustration
2.3 Accessories
2.4 FUNCTION SETUP
2.4.1 Function Setup
2.4.2 Language
2.4.3 Image
2.4.4 Sound
2.4.5 Playback
Chapter One About Maintenance
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3.1.3 Introduction to IC of the player
3.2.16 HDMI circuit
2.4.6 Karaoke
2.4.7 Preference
2.4.8 Parental control
2.4.9 Initial setup
2.4.10 Rest to defaults
2.4.11 Exit
2.5 Specifications
Chapter Three Principle and Servicing
Section One Principle of the Player
3.1.1 Functions and features
3.1.2 Block diagram of the player
Section Two Unit Circuit Principle
3.2.1 Introduction to laser head
3.2.2 Servo circuit
3.2.3 CD/DVD conversion circuit
3.2.4 Laser power control circuit
3.2.5 Open/close door drive circuit
3.2.6 Main axis control circuit
3.2.7 Decode circuit
3.2.8 Video circuit
3.2.9 Reset circuit
3.2.10 Audio circuit
3.2.11 Mute circuit
3.2.12 Power circuit
3.1.13 USB jack circuit
3.2.14 AV output board circuit
3.2.15 Panel control circuit
Section Three Servicing Cases
3.3.1 Servicing cases
3.3.2 Troubleshooting flow chart
Section Four Waveform diagram
Section Five Function Introduction to IC
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3.5.1 function introduction to MT1389HD
3.5.2 function introduction to AT24C02
3.5.3 function introduction to Cs5340
3.5.4 function introduction to 74HCU04
3.5.5 function introduction to FLASH
3.5.6 function introduction to SDRAM
3.5.7 function introduction to 4580
3.5.8 function introduction to D5954
3.5.9 function introduction to Pt6961
3.5.10 function introduction to VIPer22ADIP
3.5.11 function introduction to P H817
3.5.12 function introduction to LM431A
3.5.13 Function introduction to 455 8
3.5.14 Function introduction to TDA1308
3.5.15 Function introduction to MT1392E
Chapter Four Disassembly and Assembly Process
Chapter Cinque PCB board & Circuit diagram
Section One PCB board
Section Two circuit diagram
Chapter six BOM List
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Chapter One About Maintenance
1.1 Safety precautions
1.1.1 Power supply
When maintenance personnel are repairing DVD players, he should pay special attention to the
power board with 220V 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 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 -

1.1.4 About placement position
1. Never place DVD player 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 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.
1.2.2 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.
1.2.3 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.
1.2.4 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.
1.2.5 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 Element substitution method
When some elements cannot be judged good or bad, substitution method may de adopted directly.
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
Digital oscillograph ( 100MHE)
TV set
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 Features
This player has employed the new generation DV decode chip with built-in Dolby Digital decoder
which willbring you to a brand-new AV entertainments world. The 2-laser super error-correction
mechanism supports CD-R.
Brand-new AVEffects
#Compatible with DivX, MPEG4 discs to produce wonderful pictures.
#108MHz/12bit video DAC, with more vivid and brilliant pictures.
#Progressive-scan video outputs to eliminate the flickers hardly overcome by interlacing scan and
therefore your eyesight will be well-protected. At the same time, the pictures definition Is sharply
enhanced and the pictures will be finer, smoother and stabler
#Brightness, chroma and contrast adjustment functions to render your eyes more comfortable.
#Digital echo Karaoke to enable your singing easier.
#Composite Video, S-Video and Component Video outputs.
#Bullt-In Dolby Digital decoder, separate 5.1Ch Outputs.
#Dolby output for 2channel(DOWNMIX)
#DVD-Audio decoding output to reproduce original and realistic sound effects.
High Quality Digital Audio
#Optical and coaxial outputs for Digital audio.
#DTS,Dobly Digital, PCM Digital audio outputs to satisfy the fans’ss acoustic requirements.
Many Convenient Features
#Screen saver protects your TV set carefully.
#The novel Mp3 playback window GUI provides you a new way to appreciate Mp3 music.
#Multi-angle playback function makes it possible for you to view a scene from different camera angles.
#It’s possible to select the desired beginning, development and ending of a story.
#Direct entry into desired scenes(title/chapter/track search).
#Zooming function to zoom up any playing picture.
#Capable of playing PAL/NTSC discs.
#Multiple aspect ratios to fit TV sets of various screen ratios.
#Parental lock function to prevent children from watching unsuitable discs.
#Multiple dubbing languages and subtitle languages bring you the best entertainment status all the time.
Super Compatibility with super VCD, VCD, CD , CD-R , MP3,HDCD,KODAK PICTURE CD etc.
NOTE: DivX version is still upgrading continuously and the latest version of this unit is DivX 5.1.
Some discs labelled with MPEG4 on the market actually are others, with which are uncompatible .
Please take care when buying discs.
- 4 -

2.2 Control Button Locations and Explanations
2.2.1 Front Panel Illustration
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Slot flap for USB
MIC jack
Headphone jack
POWER switch
Disc tray
IR SENSOR
Display window
OPEN/CLOSE button
PLAY/PAUSE button
STOP button
Playback time
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5 6 8 9
2.2.2 Rear Panel Illustration
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Mixed Audio out jack
5.1CH Audio Out jack
S-Video
Video Out jack
HDMI Out jack
Video Component /Y Pb Pr out jacks
Digital Audio Coaxial Out jack
Digital Audio Optical Out jack
SCART out jack
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2.2.3 LED Display Window Illustration
2.2.4 Remote Control Illustration
Button
Open or close the disc tray.
LANG Button
Change the audio language or audio channel.
MEMORY Button
Save the playing point or jump to the saved point .
DISP Button
Display or hide disc information.
NUMBER Buttons
BROWSE Buttons
switch new user interface.
CURSOR Buttons
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[ ]
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USB
DVD
ETUP Button
Function Setup.
Button
Open/close the virtual keyboard function.
KARAOKE Button
Karaoke operation menu.
Button
Fast backward play.
Button
Skip backward.
PEPEAT Button
Repeat play.
A-B Button
Repeat the select.
Button
Press once to stand by, Press twice to play.
SUBT Button
Change subtitle language.
HDMI Button
Switch output mode of HDMI.
Q-PLAY Button
Skip the advertisement/warning and play the DVD directly.
MENU Button
Display DVD menu or open/close PBC.
OK Button
Cancel Button
ZOOM Button
Zoom in/out the displayed frame.
Button
Play or pause playback.
Button
Fast backward play.
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Button
Stop playback.
Button
Skip forward.
USB DVD Button
VOL +/- Button
Increase/decrease volume level.
MUTE Button
Press once to mute, twice to unmate.
2.3 Accessories
AUDIO/VIDEO CORD
REMOTE CONTROL
AAA SIZE BATTERIES
WARRANTY CARD
USER MANUAL
KARAOKE DISC
1PCS
1PCS
2PCS
1PCS
1PCS
1PCS
2.4 FUNCTION SETUP
2.4.1 Function Setup
- 6 -

Setup menu
DVD menu
Soundtrack
Subtitle Off
Language
Image
Sound
Playback
Karaoke
Preference
Parental control
Initial setup
Reset to defaults
Exit
Setup menu
DVD menu
Soundtrack
Sbutitles Off
Russian
English
Ukrainian
TV system
TV scan mode
Video out.
TV format
Sharpness
Gamma
Brightness
Contrast
Hue
Saturation
AUTO
IS
Com.
16:9
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Off
0
0
0
0
AUTO
PAL
NTSC
High
Medium
Low
TV system
TV scan mode
Video out.
TV format
Sharpness
Gamma
Brightness
Contrast
Hue
Saturation
AUTO
IS
Com.
16:9
M
Off
0
0
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0
1.Press the [SETUP] button and the screen
displays the selection menu of function setup.
2.Press the [CURSOR] button to select the menu
to be entered and press the [OK] or button to
confirm. Or press the [CURSOR] button to
Exit item and then press the [OK] button to exit .
3.Press [UP/DOWN] arrow to select the desired
item you want to set and press [OK].
For example, press [UP/DOWN] arrows to
select IMAGE and press [OK]. The Image setting
page appears on the screen.
4.Press [UP/DOWN] arrow to select the
SHARPNESS item. Press [OK] to confirm it.
And then press [UP/DOWN] arrow to select
the desired valus.For example: Press[
UP/DOWN] arrow to select “Medium” ,then
press [OK], the TV screen display.
5. Press [LEFT] button if you want to return to
the previous setup page.
6.Press [SETUP ]to exit the setup menu.
2.4.2 Language
1.Setup menu: This item is used to set the
prompts language on the screen.
#Optional setting: Russian, English, Ukrainian.
#Default: English.
2.DVD menu: To set the preference disc menu
lang when playing.
#Optional setting:
#Default: English.
3.Sountrack:To set the preference audio
language when playing.
#Optional setting:
#Default: English.
4.Subtitles: To set the preference subtitle
language when playing.
#Optional setting: Off,
#Default: Off.
2.4.3 Image
Russian, English, Estonian,
Latvian, Kazakh, Romanian, Byelorussian,
Ukrainian, Chinese, Others.
Russian, English, Estonian,
Latvian, Kazakh, Romanian, Byelorussian,
Ukrainian, Chinese, Others.
Russian, English,
Estonian,Latvian, Kazakh, Romanian,
Byelorussian, Ukrainian, Chinese, Others.
TV system
TV scan mode
Video out.
TV format
Sharpness
Gamma
Brightness
Contrast
Hue
Saturation
AUTO
IS
Com.
16:9
M
Off
0
0
0
0
AUTO
PAL
NTSC
1.TV system: This item is used to the video
output system of this unit.
#Optional setting: Auto, PAL, NTSC.
#Default: AUTO.
2.TV scan mode: To set
.
3.Video output: To set the types of SCART out
connector.
#Optional setting: Component , SCART.
#Default: Component.
#When using RGB outputs from the SCART
interface,please select RGB. Other wise ,
please select Com-ponent.
Progressive scan,
Interlaced scan mode
#Optional settings: Progressive , Interlaced.
#Default: Interlaced.
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Mixer...
Digital output
HDMI Audio On
Tuning
Configuration
Stereo mix
Surr. Mix
Low band
Channels
Delays
PRO Logic II
St.
L+R
sum
FSW
Off
Stereo
5.1
Configuration
Stereo mix
Surr. Mix
Low band
Channels
PRO Logic II
Delays
St.
L+R
sum
FSW.
AUTO
4.TV format: To set the aspect ratio of this
player’s output image.
#Optional setting: 4:3 Pan-scan, 16:9 letterb.,
16:9 TV, Wide/SQZ.
#Default: 16:9 TV.
5.Sharpness:Used to set the sharpness of video
outputs.
#Optional setting: High, Medium, Low.
#Default: Medium.
#Optional setting: High, Medium, Low, Off.
#Default: Off.
7.Brightness:Used to set the brightness of video
outputs.
8.Contrast:Used to set the contrast of video
outputs.
9.Hue: Used to set the hue of video outputs.
10.
A.
B.
2.4.4 Sound
6.Gamma emendation:This item is used to setup
the Gamma value of video output.
Saturation: Used to set the saturation of video
outputs.
#Brightness, contrast, hue and saturation
adjusting means:
Press [UP/DOWN] arrow in the video setup
menu to select the desired item you want to
adjust. Press [OK] or [RIGHT] button to enter
the item's adju-stment.
Press [UP/DOWN] arrow to adjust the setting
value.
1.Mixer...
A. Configuration: To set this player’s DOWNMIX
mode to change multi-channel audio into two
channel audio.
#Optional setting: Stereo, 5.1.
#Default: Stereo.
B. Stereo mix: To set the output means of the left
or right audio when playing a Dolby disc with
separate two-channel audio.
#Optional setting: L+R, L, R.
#Default: L+R.
C.Surr. Mix: To set output means of the surround
left and right audio when playing a stereo disc.
#Optional setting: Off, sum, Virt.Surr.
#Default: Off.
D.Low band: select the channel that you desire
to output low frequency signal.
#Optional setting: Front F, Center C, Surround Sr,
Subwoofer SW.
#Default: Front F, Subwoofer SW.
E.Channels: To set volume of each individual
channel.
a. Press [UP/DOWN] navigation keys to select
CHANNEL TRIM, then press the [OK] or
[RIGHT]navigation key to select ENTER
SETUP PAGE as shown in the TV screen:
16
Volume L
FRONT surround
Rl r Center SW
16 16 16 16 16 16
b.Press [LEFT/RIGHT] navigation keys to select
the desired channel to adjust.
c. Press [UP/DOWN] navigation keys to raise or
lower volume of the channel.
d. Press [OK] or [LEFT] to return to the Mix..
setup page.
F. Delays: To set delay time of the Center/
Surround/ Subwoofer Speaker.
A. Press [UP/DOWN] navigation keys to select
Delays in Channels item, then press [OK] or
[RIGHT] navigation key select ENTER SETUP
PAGE as shown in the TV screen.
Subwoofer
Center
LS/RS
0cm
0cm
180cm
b.Press [UP/DOWN] navigation keys to Select
the desired item oup Press [OK] or [RIGHT]
button to enter setting.
c. Press [UP/DOWN] navigation keys to raise or
lower volume.
D.Press [OK] or [LEFT] to return to the Delays in
channels setting page.
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G. PRO Logic II: To set PRO Logic II to ON or
OFF. If the TITLE does not support this
function, we recommend that you set this item
to AUTO because it would become worse if the
processing effects were added forcibly.
#Optional settings: SPDIF Multi Channel off.
#Default: Multi.
: to set the tone level to match
your diapason when you're singing
#Method to adjust tone control:
a.Press [UP/ DOWN] cursor buttons to select
"tone" item in Audio Setting page, and then
press [OK] or [RIGHT] button to enter
Adjustment Menu.
b. Press [UP/DOWN] cursor button to adjust
setting value.
c. Press [OK] or [LEFT] button to return to Audio
Setting page after adjustments are done.
#Optional setting: AUTO, On, Off .
#Default: AUTO.
2. Digital output: select to set the format and
stream form of digital audio output.
A. SPDIF format:3Optional setting: RAW format,
SPDIF/PCM.
#Default: RAW format.
B. LPCM
#Optional setting: 48 kHz 16bit , 96 Khz 24bit,
192kHz 24bit
#Default: 48 kHz 16bit.
NOTE
3. HDMI Audio: This item is to set whether
the HDMI Audio output is allowed.
4. Tuning:
A. Max volume: set the maximum volume.
B.Equalizer: To set Equalizer modes.
#Optional setting: Off, Rock, Pop, Live, Dance,
Techno, Classic, Soft.
#Default: Off.
C. Echo: To set different sound field effects.
#Optional setting: Off, Concert, Living room, Hall,
Bathroom, Cave, Arena, Church.
#Default: Off.
D.Tone balance
2.4.5 Playback
If HDMI Audio is set in ON, this item is not
adjustable.
DVD
VCD/SVCD
Files
Repeat
Advertisemenu No
A. P. V
Off
Microphone
Kar. help
Volume
Echo
On
Off
On
No ast.
5
5
1. DVD:set whether information of advertisement
and warnings at the beginning of DVD disc is
skipped to play the movie directly.
Advertisemenu
#Optional setting: Yes, NO
#Default: Number
2.VCD/SVCD: To set the PBC status.
#When playing Super VCD or VCD2.0 discs, if
the PCB is ON, the menu image displays.
#Optional setting: On, Off.
#Default: On.
3.Files:data disc may probably includes Mp3,
JPEG and MPG format files in which you may
select DVD player to read the file type.
#Optional setting: Audio, Picture, Video.
#Default: Audio, Picture, Video.
4. Repeat : select the repeat playback mode.
#Optional setting: Off, Single, all.
#Default: Off.
2.4.6 Karaoke
1.Microphone: switch on or off microphone.
#Optional setting: On, Off.
#Default: Off.
2.Kar. help: select accompany singing means.
#Optional setting: Channels L, Channels R,
Channels No ast, Channels No voc.
#Default: Channels No ast.
3.Volume:
A.In microphone setup page, press [UP/DOWN]
cursor to select “Volume” item, and then press
[OK] button to enter the adjustment menu.
B.Press [UP/DOWN] cursor to adjust the setup
value.
C.After adjustment finishes, press [OK] button
to return to microphone setup page.
Microphone
Kar. help
Volume
Echo
On
No ast
4
4
4.Echo:
A.In microphone setup page, press [UP/DOWN]
cursor to select “Echo” item, and then press
[OK] button to enter the adjustment menu.
B.Press [UP/DOWN] cursor to adjust the setup
value.
C.After the adjustment finishes, press [OK]
button to return to microphone setup page.
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Auto
PAL
NTSC
any
Kid
G
PG
PG-13
PGR
R
NC-17
Allowed..
Set password
Any
Old password
New password
Verify
OK Cancel
Load factory settings
OK Cancel
Language
Image
Sound
Playback
Karaoke
Preference
Parental control
Initial setup
Reset to defaults
Exit
Microphone
Kar. help
Volume
Echo
On
No ast.
5
4
Backlight
Gr. equalizer
Screen saver
On
Off
Off
On
2.4.7 Preference
1.Backlight:This item is used set color of led on
the front panel.
#Optional setting: On, Off.
#Default: On.
2.Gr. equalizer: This item is used to set wether
the Dynamic Spectrum is allowed.
#Optional setting: On, Off.
#Default: Off.
#Dynamic Spectrum display is invalid in Data
disc DVD AUDIO playback.
3.Screen saver: Open or close the screen saver
function.
#Optional setting: On, Off.
#Default: On.
2.4.8 Parental control
1.Allowed..: To set the parental control ratings to
prevent children from watching the restricted
contents.( In case the disc supports this
function.)
#Optional setting: any, Kid, G, PG, PG-13, PGR,
R ,NC-17.
#Default: any.
2.Set password: To set four digit password to
enable you to change the parental control
ratings.
2.4.9 Initial setup
Press [UP/DOWN] arrow to select the
desired option and Press [OK] button to confirm
it.
NOTE
2.4.10 Rest to defaults
In this setup state, you may not press [LEFT]
button to return to the previous menu.
Reset to defaults: To restore all settings to
the default value except for the parental control
and password settings.
2.4.11 Exit
Press [UP/DOWN] arrow to select the Exit
item. Press [OK] button to exit the setup menu.
#Default: 7890.
2.5 Specifications
Playerable discs
Inputs
Outputs Audio outputs
DVD-Video, Super VCD, VCD, DivX 3.11, DivX 4,DivX 5, Divx Pro, XviD, CD-DA,
CD+G, DVD-Audio,HDCD, MP3, WMA, Kodak Picture CD, JPEG
MIC input
Analog audio output: Stereo, output 5.1CH
Digital audio output: Coaxial,Opcical
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Playerable discs
Inputs
Outputs Audio outputs
Video outputs
Video Characteristics
Audio characteristions
Operating voltage
Power consumption
General Specifications
Operating Temperature
Operating Humidity 15~75%(no condensation)
DVD-Video, Super VCD, VCD, DivX 3.11, DivX 4,DivX 5, Divx Pro, XviD, CD-DA,
CD+G, DVD-Audio,HDCD, MP3, WMA, Kodak Picture CD, JPEG
MIC input
Video amplitude 1.0Vp-p(75 )
S-Video amplitude Y:1.0Vp-p(75 ) C:0.286Vp-p(75 )
Component Video amplitude Y:1.0Vp-p(75 )
Cb/Cr:0.7Vp-p(75 )
Frequency response 20~20KHz(±1 dB)
Slgnal-to-noise ratio >100(dB)
THD <0.01%
Dimensions: 380mm 250mm 41.5mm
Mass: 1.86kg
~110V-250V, 50/60 Hz
14W
5~35
Analog audio output: Stereo, output 5.1CH
Digital audio output: Coaxial,Opcical
Composite, S-Video, component Y Cb Cr, progressive scan
output Y Pb Pr, RGB/SCART
Headphones output
Outputs
#Design and specifications are subject to change without notice.
#We do not guarantee that all discs can be played smoothly due to the disc quality, disc recording quality
and recording format.
- 11 -
Play erable disc s
Input
Audio outputs
Video outputs
Video Charac teris tic s
Audio c haracteri st ions
Operating voltage
Output
Analog audio out put: Stereo, out put 5.1CH
Digital audio output : Coaxial, Opt ical
Composit e, S-V ideo, c omponent Y Cb Cr, progressive scan
output Y Pb Pr, RGB/SCART
Headphones output
DVD-Video, Super V CD, V CD, DivX 3.11, Di vX 4,Di vX 5, Divx Pro, XviD, CD-DA ,
CD+G, HDCD, MP 3, W MA, Kodak Pic ture, JPEG
MIC input
Video ampl itude 1. 0Vp-p(75 )
S-Video amplitude Y:1. 0Vp-p(75 ), C:0. 286Vp-p(75 )
Component Video amplitude Y: 1.0Vp-p(75 ), Cb/Cr:0. 7Vp-p(75 )
Frequency respons e 20~20KHz (±1 dB)
Slgnal-t o-noise rat io >100(dB )
THD <0.01%
~110-250V, 50/60Hz

#Design and specifications are subject to change without notice.
#We so not guarantee that all discs can be played smoothly due to the disc quality, disc recording quality
and recording format.
- 12 -
Power cons umpti on
General Spec ificat ions
Operating Temperature
Operating Humi dity
5~35
15~75%(no c ondensation)
Dimensi ons: 380mm 258mm 41.5mm
Mass: 2kg
14W

3.1.1 Functions and features
This player adopts new generation DVD decode chip, with built-in Dolby decoder, which creates
vivid surround sound effect to bring you to taste cinema effect. It has the following features:
Progressive scanning output produces steadier and clearer pictures with flickering.
HDMI jack.
5.1CH output.
Composite video, S-video and component video output.
Digital picture adjustment to the sharpness, brightness, contrast, chroma and saturation os
picture, gamma correction.
Built-in Dolby digital decoder.
Karaoke function.
Headphone output function.
USB jack.
Compatible with DIVX, MPEG4 format movie.
3.1.2 Block diagram of the player
Its internal structure is mainly composed of decode & servo board, HDMI high definition board,
input/output board, power board and loader components. Block diagram of the player is shown in the
figure 3.1.2.1, except for power board, other signal flow are all shown in the figure. Main function of
loader is to read disc information and transmit to Mt1389, Mt1389 fulfills servo function through D5954
on decode board and other subsidiary circuit to ensure the normal working of loader. FLASH on decode
board is to save system program, SDRAM is to save program when machine is working and read sound
and picture information from disc to ensure smooth output. Main function of AV board is to output various
video signals.
Chapter Three Principle and Servicing
Section One Principle of the Player
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Figure 3.1.2.1 Block diagram of the player
Reset
27M cock EEPROM
24C02
U202
Mt1389HD
U201
UREST
SCL SDA
XI XO
IOA
Panel SDRAM 64M
FLASH16M
U211 U214
Audio
amplifying
audio
Video
filtering
clamping
AV output terminal
U209
U210
U211
AL
AR
ALS
ARS
SW
CTR
Lt
Rt
SL
SR
LFE
Cc
YUV1
YUV2
ASPDIF
SY
SC
CVBS
G/Y
B/U
R/V
Y1
Y2
Y0
Y3
Y4
Y5
Y6
Y7
SLRCK
SBCLK
SACLK
SDATA0
SDATA1
SDATA2
SDATA3
ASPDIF
SCL
SDA
INT0#
PWDN#
MT 1392
HDMI jack
TX 0-
TX 2+
TX 1-
TX 2-
TX 0+
TX 1+
TXC-
TXC+
HPD
HDMI SCL#
HDMI SDA#
HPD
YUV3
YUV4
YUV5
YUV6
VIP4
STBY
FOSO
FMSO
DMSO
TRSO
TROPEN
TRCLOSE
TR_B1
REG01
Voltage
reduce
circuit
VCC
3.3V
Voltage
reduce
circuit
VCC
1.8V
TR_B2
REG02
VR-DVD
VR-CD IOA
LDO2
LDO1
VR-DVD
VR-CD
CD/DVD
Switch
Laser power
control
MDI
DVD:A/B/C/D/RFO
CD:A/B/C/D/E/F
V20
TRIN
TROUT
LIMIT
Loader
U302
AM5888S
TK+ TK- FC+ FC-
SL+
SL-
SP+
SP-
LOUD+
LOUD-
M
M
M
CS5340
U203 MIC
Earphone
USB
- 14 -

3.1.3 Introduction to IC of the player
Introduction to IC of the player is shown as in the following table:
PCB semi-finished
product name IC model Location Function
MT1389HD U201 Decode chip
24C02 U202 EEPROM
CS5340 U203
HCU04 U205 Phase inverter
FLA SH U207 16M FLASH
SDRA M U208 64M SDRAM
4580 U209, U210, U211 Operational amplifier (audio amplifying)
D5954 U302 Servo driv e
PT6961 U401 Panel control IC
HS0038B3V U402 Remote control rec eiver
V IPER2 2 U501 Power sw itch IC
PH817 U502 Photoelectric coupler
LM431A U503 Precision voltage stabilizer
4558 U601 Operational amplifier (audio amplifying)
TDA1308 U603 Operational amplifier (headphone audio
amplify ing)
MT1392E U701 HDMI control
TVS_RCLAMP0514M U703, U704
MIC board
High definition
board
Main panel
Power board
Decode board
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Section Two Unit Circuit Principle
3.2.1 Introduction to laser head
1. Function introduction to laser head flat cable is shown as the following table:
Pin Name Signal flow
direction DVD disc CD disc No disc Function description
1F- Input loader 2.52 2.34 0.46
2F+ Input loader 2.49 2.49 0.93
3T+ Input loader 2.53 2.51 0.94
4T- Input loader 2.58 2.51 0.93
5CInput MT1389 2.2 2.25 2.04 Disc data signal
6DInput MT1389 2.2 3.2 2.04 Disc data signal
7IOA Input MT1389 0.01 3.2 3.21 Disc identification signal, CD is 3.3V, DVD
is 0V
8RF Input MT1389 2.21 2.53 1.28 The sum of disc data signal
9AInput MT1389 2.17 2.22 2.04 Disc data signal
10 BInput MT1389 2.19 2.27 2.04 Disc data signal
11 FInput MT1389 2.07 2.44 2.03 Supplementary signal used in trace
12 GND Ground 0.01 0.01 0Grounding
13 V20 Input loader 2.04 2.06 2.03 Reference voltage
14 Vcc Input loader 5.04 5.04 5.02 Supply voltage for loader
15 EInput MT1389 2.06 2.45 2.03 Disc data signal
16 Blanking haning in air 0.01 00unused
17 VR-CD Input loader 0.21 0.01 0Through the handling inside loader, make
sure MD11 is 180mV when reading CD
18 VR-DVD Input loader 0.01 0.2 0Through the handling inside loader, make
sure MD11 is 180mV when reading DVD
19 LD-CD Input loader 0.09 2.1 0CD laser power control signal
20 MDII Input MT1389 0.21 0.2 0CD and DVD laser power monitoring signal
21 HFM Input loader 5.04 5.04 5.02
High frequency overlapping signal produces
laser with different wave length inside
loader
Focus error signal is added to two sides of
pick-up focus coil
Trace error signal is added to two sides of
pick-up trace coil
- 16 -