BBK DK1410SI User manual

service manual
DK1410SI DK1440SI
DK1470SI DK1480SI

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
2.2 Controls and functions
2.2.1 Front panel controls
Chapter One About Maintenance
Chapter Two Functions and Operation Instructions
2.1 Features
2.2.2 Rear panel connections
2.2.3 VFD display general view
2.2.4 Remote control general view
2.3 FUNCTION SETTINGS
2.3.1 Function selection and change
2.3.2 Language settings
2.3.3 Image settings menu
2.3.4 Sound settings menu
2.3.5 Playback settings
2.3.6 Karaoke settings menu
1
1
1
1
1
2
2
2
2
2
2
2
3
3
3
4
4
5
5
5
6
6
8
8
8
8
9
10
10

2.3.7 Preference settings
2.3.8 Parental control
2.3.9 Initial setup menu
2.3.10 Reset to defaults
2.3.11 Exit settings menu
2.3.12 Channel delay set-up
Chapter Three Principle and Servicing
Section One Principle of the Player
Section Two Unit Circuit Principle
3.2.1 Decode circuit
3.2.2 Servo circuit
3.2.3 Laser power control circuit
3.2.4 Main axis control circuit
3.2.5 Control panel circuit
3.2.6 Power circuit
3.2.9 Video circuit
Section Three Servicing Cases
Section Four Servicing Parameters
3.4.1 Signal waveform diagram
3.4.2 Key point voltage
3.1.1 Function introduction
3.1.2 Block diagram principle of the player
3.2.7 Audio power amplifying circuit
3.2.8 Output circuit
3.3.1 Servicing cases
3.3.2Troubleshooting flow chart
Section Five Function Introduction to IC
3.5.1 function introduction to MT1389E
3.5.2 Function introduction to SDRAM
3.5.3 Function introduction to FLASH
3.5.4 Function introduction to D5954
3.5.5 Function introduction to 24LLC020
3.5.6 Function introduction to 74HCT125
3.5.7 Function introduction to Cd4052
10
11
11
11
11
11
14
14
14
14
16
16
17
19
20
21
22
24
26
28
30
30
38
58
58
61
63
63
77
78
79
80
81
83

3.5.8 Function introduction to SAA6588
3.5.9 Function introduction to Cs5340
3.5.10 Function introduction to 4558/4580
3.5.11 Function introduction to TLV272
3.5.12 Function introduction to TAS5508
3.5.13 Function introduction to TAS5112
3.5.14 Function introduction to 5L0380
3.5.15 function introduction to LM431A
3.5.16 Function introduction to Hs817
3.5.17 Function introduction to Pt2579
PCB board & Circuit diagram
Section One PCB board
Section Two circuit diagram
Chapter six BOM List
Chapter Four Disassembly and Assembly Proces
Chapter Cinque
84
84
85
86
86
88
93
93
94
94
96
97
97
106
112

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.
- 2 -

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 -

2.1 Features
Formats:
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
Digital video playback of DVD-Video, Super VCD and VCD formats.
MPEG-4 compatibility:Playback of Divx 3.11, Divx 4, Divx 5, Divx pro and XviD formats.
Playback of music discs in DVD-Audio format.
Playback of musical compositions in DC-DA and HDCD formats.
Playback of compressed musical files in Mp3 and WMA formats.
Playback of Karaoke-discs in DVD, VCD and CD+G formats.
Playback of photo al bums, recorded in Kodak Picture CD and JPEG digital formats.
Audio:
192 kHz/24 bit audio D/A converter.
Coaxial and optical audio outputs, providing digital sound playback in Dolby Digital/LPCM formats.
Coaxial and optiacl audio inputs, providing connection of external digital signal sources.
Stereophonic audio outputs for connection to TV and amplifier.
Integrated digital multi-channel sound decoders, providing playback of Dolby Digital and DTS
audio tracks.
Integrated Dolby Pro Logic ll decoder, provding transformation of stereophonic signal to multi-
channel one.
Microphone input providing karaoke functions.
Headphones output.
Video:
108 kHz/12 bit video D/A converter.
Progressive scan(Y Pb Pr)video signal output, securing high resolution and absence of image
flicker.
Composite and component(Y Cb Cr)S-video and RGB/SCART video outputs, providing advanced
switching capabilities.
NTSC/PAL transcoder.
Support of many camera angels, dubbed languages and subtitles.
Sharpness, Gamma, Brightness, Contrast, Hue and Saturation adjustment.
Miscellaneous:
Support of CD-R/CD-RO, DVD-R/DVD-RW, DVD+R/DVD+RW
FM/AM tuner with RDS support.
USB port, providing playback of files of supported formats from external flash-memory devices.
KARAOKE+, providing extended karaoke features.
Easy to use on-screen menu in Russian.
Support of Russian file names, ID3 tags and CD-text.
"Memorty” function which can load the last disc position on stop.
"Capture” function, auto loading selected bookmarked image as the wallpaper.
Q-Play function that will bring you to the main movie title and skip unskippable commercials.
Virtual control panel function makes your control of the device much easier when playing the
movie.
Chapter Two
Functions and Operation Instructions
- 4 -

#
#
#
Auto protecion of TV screen.
Child lock, parental control(protection against playing undesirable discs)
Auto voltage selection(~110-250V)and short-circuit protection.
2.2 Controls and functions
2.2.1 Front panel controls
1STANDBY/POWER button
Press to switch the device on/into standby.
Disc tray
OPEN/CLOSE button
Press to open/close the disc tray.
PREV button
Press to playback from the previous bookmark
NEXT button
Pres to playback from the next bookmark
REW button
Press to playback fast reverse/radio station
tuning
Button
Press to playback fast reverse/radio station
tuning
FWD
2
3
4
5
6
7
SOURCE button
Press to switch between DVD-receiver/Audio
input/Tuner/Digital audio input.
PLAY/PAUSE button
Press to playback/pause
STOP button
Press to stop the playback
Microphone input
VOLUME adjuster
Press to adjust volume.
VFD display window
Headphones input
USB port
9
10
11
12
13
14
15
8
2.2.2 Rear panel connections
1AM Antenna input
FM Antenna input
Left front speaker input (output from the build in
amplifier)
Right front speaker input (output from the build-in
amplifier)
2
3
Right Surround speaker input (output from the
build-in amplifier)
Audio input
Stereophonic audio output
Component video output Y Cb (Pb) Cr (Pr)
Composite video output
10
11
12
9
8
4
- 5 -

5Center speaker input (output form the build-in
amplifier)
Subwoofer input (output from the build-in
amplifier)
Left Surround speaker input (output from the
build-in amplifier)
6
7
S-Video output
SCART-type AV connector
Coaxial digital audio output
Optical digital audio output
Optical digital audio input
Coaxial digital audio input
13
14
15
16
17
18
2.2.3 VFD display general view
1MP3-disc
CD-, VCD-or SVCD-disc
DVD-disc
Repeat
AM/FM
Radio tuning mode
Tuner tuning mode
Stereo
2
3
4
5
6
7
8
9Dolby Digital
Programmed radio station
Friquency
Playback time
Chapters or tracks
Playback or pause
PBC
10
11
12
13
14
15
2.2.4 Remote control general view
1EJECT button
Press to open/close the disc tray.
DVD button
Press to switch to DVD mode
AUDIO button
Press t switch to audio input mode
DISP button
Press to display the disc information
LANG button
Press to change the canuage
SLEEP button
Press to turn the sleep mode on
Q-PLAY button
Press to tum the Q-play mode on
EQ button
Press to adjust the equalizer
2
3
4
5
6
7
8
9BASS+/- button
Press to adjust subwoofer
BOOST button
Press to bass boosting
BROWSER button
Press to turn on/off browser function
JOG DIAL wheel
Functions are set manually. Default function:
zoom
SETUP button
Press to switch to setup mode.
Button
Press to capture and bookmark image for the
wallpaper
Button
Press to start reverse or forward scanning
10
11
12
13
14
15
- 6 -

16 SKIP/RESET +/-
Press to switch between files on disc/tuned radio
stations
A-B buttons
Press to repeat the selected portion
REPEAT button
Press to repeat playback
CH+/CH- button
Press to change the acoustic channel
MUTE button
Press to change the acoustic channel
VOLUME+/- button
Press to adjust the volume
SLOW button
Press to switch to slow down the playback
PLAY/PAUSE button
Press to play/pause the playback
STOP button
Press to stop the playback
Button
Press to turn on/off the virtual control panel
CANCEL button
Press to go one level back/cancel current
operation
OK button
Press OK for confirmation of use it like joystick
during navigating in MENU
MENU button
DVD-disc menu/PBC function
GOTO button
Press to playback from the target place
Numeric buttons
ST/5.1 button
Press to switch between STEREO/5.11CH
TREBLE +/- button
Press to adjust the tone
ECHO button
Press to adjust the echo function of the
microphone
MEM button
Press to memorize the point where playback was
stopped/playback from the previously meorized
point.
HDMI button
Press to switch to HDMI mode.
SUBT button
Press to change the subtitles language
ANGLE button
Press to change the camera angel
RADIO button
Press to switch to radio mode
KARAOKE button
Press to set the karaoke functions
USB button
Press to switch to USB mode
Button
Press to switch the device on/into standby
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
35
36
37
38
39
40
34
41
- 7 -

2.3 FUNCTION SETTINGS
2.3.1 Function selection and
change
Press the SETUP key to show the setup
menu. You will see the following image on the
screen, as shown on the figure: Select the
desired menu item using the jog Dial; Press OK
confirmation.
1.For example, if you wish to change the image
sellings, you have to select the lmage item and
press the OK or GIGHT key of the cursor
joystick.
2.Using the jog Dial, select the desired item and
press OK or RIGHT key of the cursor joystick.
Fox example, select the Sharpness item.
Settings will appear on the screen. Then select
the desired sharpness level and press OK for
confirmation.
3.Press LEFT key of the cursor joystick for exit to
previous menu level.
4.Press SETUP to exit setup menu.
2.3.2 Language settings
1.Menu: interface language setup
Options: Russian, English, Ukrainian.#
# Default option: English
2.DVD-menu: Selection of disc menu language.
3.Soundtrack selection of translation language
Options: Russian, English, Estonian,
Lithuanian, Kazakh, Romanian, Belarusian,
Ukrainian, Chinese.
Default: English.
Selection of other languages: Select the
OTHERS item using the jog Dial and press OK.
Enter the language code using the number
buttons and press OK.
If the language you select is not recorded on
the DVD disc, another available language will
be used.
4.Subtitles: Selection of subtitles language
Options: Off, Urssian, English, Estonian,
Lithuanian, Kazakh, Romanian, Ukrainian and
Chinese.
Default option: Off.
Selection of other languages: Select the
OTHERS item using the jog Dial and press OK.
Enter the language code using numeric
buttons and press OK.
If the language you selected is not relcoded on
the DVD disc, another available language will
be displayed.
2.3.3 Image settings menu
1.TV system: TV system selection.
Options:Auto, PAL, NTSC.
Default option Auto.
2.TV scan mode: scan mode selection
Options: Progressive, interlaced.
Default option: interlaced
Progressive scan is transferred only via a
component video output.
Before switching to progressive scan, make
sure that your TV set supports this operation
mode.
#
#
#
#
#
#
#
#
#
#
#
#
#
#
- 8 -

3.TV Format: image ratio settings
Options: 4:3 pan&scan, 4:3 letterbox and 16:9
TV.
Default option: 4:3 pan & scan.
some discs are recorded with support of only
one ratio. The selected radio must comply with
the TV screen.
4.Video output: selection of video signal.
Options: S-Video, Comp, RGB
Default option: Comp.
6.Gamma: adjustment of image color
temperature.
Options: High, Medium, Low, Off.
Default option: Off.
7.Brightness: adjustment of image brightness.
8.Contrast adjustment of image contrast.
9.Hues: adjustment of image hues.
10.Saturation: adjustment of image saturation.
Adjustment of image brightness; contrast, hues
and saturation.
Select the desired item of the image
adjustment section using the jog Dial. Press
OK or RIGHT key to start adjustong the
relevant option.
Change the option value using the jog Dial.
Upon completion press the LEFT of the cursor
joystick to return to image setup menu.
2.3.4 Sound settings menu
1.Mixer
a) Configuration: setting of the mode for
conversion of the 5-channel signal.
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
#
Options: Stereo, 5.1.
Default option: Stereo
5.1 mode must be supported by the disc.
Number of music accompaniment channels
depends on the specific disc.
Adjustment of the central speaker and
surround speakers is available only if the
Configuration option is set to 5.1 position.
b) Stereo mix: playback set-up while playing the
disc with two independent audio channels.
Options: L+R, L, R.
Default options: L+R.
c) Surr.mix: set-up of surround oftions while
playing the sereo disc.
Options: Off, Sum, L+R, Virt, Surr.
d) Low band: distribution of low frequencies
through channels.
#
#
#
Options: Front F, Center C, Surround Sr,
Subwoofer SW.
Default options: Front F, Subwoofer SW.
If you want the low-frequency component of
the sound signal enter only the subwoofer
channel, select and confirm the parameter
Subwoofer SW.
e) Channel settings: separate adjusting of
volume by channels.
Select the channel you want.
Adjust the sound volume of each channel using
the wheel.
Press the OK to return to sound settings menu.
#
#
#
f) Delay of the channel: Set-up of signal delay in
speaker channels(central, rear and subwoofer)
#
#
#
#
#
Using the jog Dial, select the channel, for
which you want to set up the delay and press
OK for confirmation.
Using the jog Dial set up the desired distance
from the listener to each speaker(dectiled
description of this operation see on page 32)
g) PRO Logic ll: function of stereo sound
conversion to 5-channel sound.
Options: On, Off, Auto.
Default option: Audio.
In Auto position, the DVD receiver determines
itself, when to use the PRO Logic ll decoder.
Some discs do not support this function.
2.Digital audio output.
- 9 -

a) SPDIF format: set-up of digital audio output
options.
Options: RAW, PCM
When you select the RAW option, the not
decoded signal is sransferred to the DVD
receivers digital outputs, the decode signal is
transferred to analog outputs. Decoding is
performed by the built-in decoder of the DVD
receiver. 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 DVD receivers
digital outputs.
b) LPCM: Set-up of digital audio output options
to comply with different amplifiers and
receivers.
Options: 48 kHz 16 bit, 96kHz 24 bit.
Defacelt option: 48kHz 16bit.
3.Sound correction
a) Max volume: max volume limiting.
Using the jog Dial, adjust the max volume level.
Press the LEFT key of the cursor joystick to
return to sound correction setup menu.
b) Equalizer: equalizer modes.
Options: Rock, Pop, Live, Dance, Techno,
Classic, Soft.
Default option: Off.
c) Echo: echo effects
Options: Off, Concert, Living room, Hall,
Bathroom, Cave, Arena, Church.
Default option: Off.
d) Tone balance: adjustment of tone balance
level.
Adjust the tone balance level using the jog Dial.
Press the LEFT key of the cursor joystick to
return to sound correction setup menu.
2.3.5 Playback settings
1.DVD
Advertisment skip: skip the unskippable
block while playing a DVD disc.
Options: Yes, number
Edfault 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
or order of playing the disc content. If the off
option is wet, the reproducing of content is
performed is the order, in which it is recorded
of the disc.
3.Flids” 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.
5.Load effect: type of transition from one JPEG
file to another.
Options: Off, from top, from bottom.
Default option: Off.
2.3.6 Karaoke settings menu.
1.Microphone: MICROPHONE ON/OFF.
Options: On, Off.
Default option: Off.
2.Kar. Help: karaoke-disc playback mode
Options: L channel, R Channel, No ast, NO vol.
Default option: No vocal mode.
3.Volume:
Microphone: microphone sound volume level.
Using the jog Dial adjust the microphone
volume level.
Press LEFT key to the cursor joystick to return
to karaoke settings menu.
#
#
4.Echo: echo level while playing the karaoke-
disc.
Adjust the echo level Using the jog Dial.
Press LEFT key of the cursor joystick to return
to karaoke settings menu.
#
#
2.3.7 Preference settings
1.Gr.Equalizer: Spectrum analyzer.
Options: On, Off.#
- 10 -

# Default option: Off.
#
#
#
#
#
#
#
Default option: Off.
2.Background: selection of an image as TV
screen wallpaper.
Options: Standard, Saved
Default option: Standard.
3.Screen saver: Screen saver on/off.
Options: On, Off.
Default optioon: On.
4.Jog Dial
Options: Zoom, Step, Skip, Volume.
Default: Zoom.
2.3.8 Parental control
1.Category: Setup of age restrictions to prevent
children from seeing undesirable discs.
Options: Any, Kid, G, PG, PG-B, PGR, R, NC-
17
Default option: Any.
#
#
2.Set password: Setup of a four-digit password
to change the level of age restrictions.
Default option: 7890.#
2.3.9 Initial setup menu
Press the RIGHT key of the cursor joystick to
enter the initial setup menu, then select the
desired item using the jog Dial and press OK
key for confirmation.
While being in this menu section, you cannot
return to the previous level by pressing the
LEFT key of the cursor joystick.
#
#
2.3.10 Reset to defaults
Resetting all settings and restoring default
options, except age restrictions level and
password.
2.3.11 Exit settings menu
Select the item using the jog Dial and press the
OK to exit the menu.
#
2.3.12 Channel delay set-up
Set-up of tine delay in the surround
channel
Usually, time delay in the Dolby Digital
decoding system is preset to ensure best offect
while installing the Hone Theater. However, in
case y you with to adjust your system more
precisely, please consult instructions given in
this manual. Set up of time delay for this device
is possible in both Dolby Digital and Dolby Pro
Logic modes.
Fig.1.Take into account the
A-B distance; useboth
figures for setting the
desired time delay.
To set the desired delay you have to know
the distance from the place where you are to the
front speakers and surround speakers as shown
in Fig.1: Consult Fig.2(Dolby Por Logic mode)
and 3(Dolby Digital mode) in order to determine
the distance to Surround Speakers(axis Y in the
figure) and the distance to the front
speakers(axis X in the figure). Crossing point of
those tow Lines on the chart will give the
recommended delay value.
- 11 -

Set-up of time delay in the central
channel
Sometimes several people are listening to
the music, and the space is limited. In this case,
you can install three speakers(two front ones
and a central one) as shown in Fig.1. With the
distance to the listener being approximately the
same. The central channel delay is to be set at
“0”.
Should the central speaker be in close
proximity to left and right front speakers as
shown in Fig.2,or the central speakers in one
line, as shown on Fig.3 with the delay value of
the central to be set at “0”.
Finally, if it will be necessary to install the central
speaker behind the left and right front speakers,
the delay value shall be set at “0”.
“Night” mode
The Dolby Digital system provides an
extremely broad dynamic range of playback
sound-from gentle to roaring. It creates the
presence effect, especially while seeing motion
pictures. However, at night a powerful sound
with a broad dynamic range may give pleasure
to you, but disturb and annoy your family and
neighbors.If you just decrease the volume, you
will immediately notice that you ceased to hear,
e.g., dialogues as clear as you do at normal
volume, and such sound effects as rustle,
whisper etc have merely disappeared. To avoid
this, you just have to decrease the volume of
“soft” sounds with the volume of “average”
sounds left unchanged, i.e. Just decrease the
dynamic range of sound accompaniment. Only
Dolby Digital system provides for such a method
of sound control. It uses the principle of
compressing the acoustic signals dynamic range
while recording; there fore; while playing an
inverse transformation(volume expansion) takes
place. This is called “night” mode. The regulation
limits are restricted; however, to avoid
distortions of resultant signal.
Dolby Digital Dolby Por Logic surround
Rear channel Stereo 20 Hz-20kHz mone channel with limited
frequency range(100Hz-7khz)
Low-frequency
channel(subowwfer) Autilable, 20-120Hz N/a
Sound field
distribution
Multivariate From left to right from right to left,
from front to rear, from rear to
front
Channels 6 independent channels, each
reproducing its own signal at a time
4 segmented channels. Only one
channel is decoded at a time.
- 12 -

Creates an optimum sound field with
illusion of an equal distance from
listener to each speaker
The most cost-efficient way to
ensure high-quality surround
effect
Allows adjusting the decompression
dagree of sound information("night"
mode)
Surround sound may be received
from any signal source.
Possibility of program mable control of
the decoder to transfer basses into low-
frequency channel in systems equipped
broad-band speakers and a subwoofer
Compatible with existing and
future two-channel(stereo)
formats
Undoubted progress in sound recording
technology, especially important for
program directors, film directors, sound
engineers and actors
Big progress in comparison whti
conventional stereo, the worol's
mosst popular surround format.
Miscellaneous
- 13 -

3.1.1 Function introduction
This players adopts new-generation DVD decode chip with built-in Dolby decoder, and the vivid
surround system brings you to taste the living cinema effect. It has the following features:
Progressive scanning output to produce steadier and clearer pictures without flickering
Composite video, S-video and component video output
Digital picture adjustment to sharpness, brightness, contrast, chroma and saturation of pictures,
gamma correction
Built-in Dolby digital decoder
Hi-FI stereo headphone output
FM/AM digital tuning function, capable of storing (memorizing) 20 FM/AM radio stations
respectively
Compatible with DIVX, MPEG4 format movie
3.1.2 Block diagram principle of the player
The player is composed of decode & servo board, power amplifier board, input/output board, panel,
headphone board, tuner, power board and loader. Shown in the figure 3.1.2.1, except that power board
is not shown, other signal flow is basically shown in the figure. The main function of loader is to read disc
information and send to MT1389, MT1389 finishes servo function through D5954 on decode board and
other supplementary circuit, other circuits are used to guarantee the normal working of loader. FLASH
on decode board is to store system program, SDRAM is to store program and information of sound and
picture read from disc when the machine is working and guarantee their normal output. The main
function of power amplifier board is to perform audio DA conversion and amplification of analog signal to
output 5.1CH to guarantee the normal working of external speaker. The main function of AV board is to
output various audio and video signals. This player is attached with headphone and microphone to meet
requirements from customers. In addition, there is external sound input, and you may use the power
amplifier board of this player to perform power amplifying to it to facilitate to output to speaker. The tuner
of this player also makes it have tuning function, and it also equipped with SAA6558 chip, so it may
realize RDS function of Europe and RBDS function of US.
Chapter Three Principle and Servicing
Section One Principle of the Player
- 14 -

Video S-video
VU
VV
VIDEO COMP
VEDIOC VIDEOY
AUXR
AUXL
TUL
TUR
OK Amplifying circuit
M 4558
MIC 2
MIC 1
CS5340
N6
SAA6558 PDS MPX
Coaxial
Optial
L
R
Tuner
Microphone
External
audio input
Reset circuit
LR
LOUTX
ROUTX
Filtering
SCART Y
VY
Rear
LR
Rear Woofer Center Front
L
Front
R
SLOUT
SROUT
SW+ SW-
CEN
FLOUT
FROUT
N13
TAS5112
N14
TAS5112
N12 TAS5508
Amplifying circuit N8
N10
RC4580
N11
RC4580
XS301 Loader
D5954
SDATA0
SDATA1
SDATA2
U201
MT1389
N9 TLV272
CD4052
DAVNIN
SDA AD
ADC DAT
Y1 Y2 Y3 Y4 Y5 Y6
SPDIF
URST#
Headphone
HDET
VFD Screen
N102
SO793
SDA
STB
CLK
Button
N103
REMOT
IR receiver
U207
FLASH
U208
SDRAM
HR
HL
IR
Filtering
Figure 3.1.2.1 Block diagram of the player
- 15 -
SDA
SCL
LRCK
SCLK

3.2.1 Decode circuit
1. Decode circuit block diagram is shown as in the following figure 3.2.1.1:
SDRAM
SDCLK
SDCKE
DCS
DRAS
SWE
DQM0
DQM1
DQ0~DQ15
MA0~MA11
URST
PWR
PRD
PCE
A0~A20
AD0~AD7
MT 1389
FLASH
EEPROM
24C02
SDA
SCL
Reset
circuit
Clock
1.8V
voltage
regulating
U206
V18
27M
Figure 3.2.1.1 Decode circuit block diagram
2. Working principle: this decode circuit is mainly composed of MT1389, SDRAM and FLASH.
Working condition of decode circuit has:
(1) Reset: refer to reset circuit working principle for details.
(2) Clock: this system adopts 27M external clock input, and produces clock signal required by
system inside through internal frequency doubling circuit.
(3) Power: decode chip adopts twp groups power supply of 3.3V and 1.8V, in which 1.8V mainly
supply power for internal logic control circuit and we call it core voltage.
After power on, reset circuit performs reset to MT1389 built-in CPU (8032) and FLASH, decode chip
outputs reset signal at the same time and performs reset to other circuit. After system reset, it firstly
sends out read signal to FLASH to read out in formation saved in FLASH, the machine displays power-
on picture, servo system begins to work to check whether machine closes door to proper position and
Section Two Unit Circuit Principle
- 16 -