BBK DK1110SI Service Manual

5 (1)

service manual

DK1110SI

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 One About Maintenance

Chapter Two Functions and Operation Instructions

2.1 Features

2.2 Controls and functions

2.2.1 Front panel controls

2.2.2 Rear panel connections

2.2.3 VFD display general view

2.2.4 Remote control general view

2.3 Setlist

2.4 FUNCTION SETTINGS

2.4.1 Function selection and change

2.4.2 Language settings

2.4.3 Image settings menu

2.4.4 Sound settings menu

2.4.5 Playback settings

2.4.6 Karaoke settings menu

2.4.7 Preference settings

2.4.8 Family filter settings

2.4.9 Initial settings menu

2.4.10 Reset settings to default

2.4.11 Exit settings menu

2.4.12 Channel delay set-up

2.5 Technical characteristics

Chapter Three Principle and Servicing

Section One Principle of the Player

3.1.3 PCB board composition diagram of the player

Section Two Unit Circuit Principle

3.2.1 Loader signal explanation

3.2.2 Servo circuit

3.2.3 Mute circuit

3.2.7 Disc identification circuit

3.2.8 Panel control components

3.2.11 Audio power amplifying circuit block diagram

3.2.12 Power circuit

Section Three Servicing Cases

3.3.1 Servicing cases

Section Four Signal waveform diagram

3.1.1 Features of the player

3.1.2 Block diagram of the player

3.1.4 Introduction to IC used in this player

3.2.4 Open/close door circuit

3.2.5 Reset circuit

3.2.6 Main axis braking control circuit

3.2.9 Video circuit

3.2.10 Input/output circuit

3.3.2 Troubleshooting flow chart

Section Five Function Introduction to IC

3.5.1 function introduction to MT1389E

3.5.2 function introduction to AT24C02

3.5.3 function introduction to 74HCU04

3.5.4 function introduction to Lm1117

3.5.5 Function introduction to 29LV160BE

3.5.6 Function introduction to HY57V641620HGT-7

3.5.7 Function introduction to Cd4094

3.5.8 Function introduction to D5954

3.5.9 function introduction to 4558

3.5.10 function introduction to M62429

3.5.11 function introduction to TDA8947J

3.5.12 function introduction to 4580

3.5.13 function introduction to 5340

3.5.14 function introduction to Pt2314

3.5.15 function introduction to Pt6961

3.5.16 function introduction to KA5L0380R & KA1M0880BTU

3.5.17 Function introduction to HS817

3.5.18 Function introduction to TL431A

Chapter Cinque PCB board & Circuit diagram

Section One PCB board

Section Two circuit diagram

Chapter six BOM List

Chapter Four Disassembly and Assembly Process

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.

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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

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Chapter Two

Functions and Operation Instructions

2.1 Features

Compatible Disc Types:

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

#MPEG-4 standard support: compatibility with DivX3.11, DivX5, DivX pro, XviD compressed video filies.

#Digital audio playback: CD-DA and HDCD compatibility.

#Fully compatible with compressed audio files such as Mp3 and WMA

#Playback of DVD, VCD, CD+G karaoke discs.

#Digital graphic albums playback: Kodak picture CD, JPEG compatibility.

Audio:

#192KHz/24 bit Audio Digital/Analog converter.

#Coaxial and optical outputs for Dolby Digital/DTS/LPCM digital audio.

#Mixed audio output for amplifier of TV connection

#Stereo signal input for external signal connection.

#Digital multi-channel decoders, providing Dolby Digital/DTS audio stream playing .

#Built-in Dolby Pro Logic ll decoder makes available to convert stereo signal into multi-channel.

#Dual-channel MIC inputs for karaoke function

#Headphones output

Video:

#108MHz/12 bit Video Digital/Analog converter

#Progressive Scan Output(Y Pb Pr) producing flicker-free and stable images

#Composite, component(Y Cb Cr), S-Video and RGB/SCART outputs for various types of connections

#NTSC/PAL transcoder

#Multiple dubbings, angles, subtitles support.

#Sharpness, gamma, brightness, contrast, hue , saturation adjustment.

Others:

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

#Built-in digital FM/AM tuner with 20 radio stations memory

#KARAOKE+ system expanding karaoke function

#Russia, CIS and Baltic States adaptation interface and filenames, ID3-tags and CD-Text support

simplifies device operation.

#”Memory” function enables to save the last point after stop playback.

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

#”Virtual keyboard” function provides more convenient DVD playback control.

#”Browser” function provides easy access to playback control.

#Automatic screensaver function

#Parental control function to protect children from watching inappropriate discs.

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2.2 Controls and functions

2.2.1 Front panel controls

STANDBY/POWER button

Press to switch the device on/into standby.

Disc tray

VFD display window

Infrared sensor

OPEN/CLOSE button

Press to open/close the disc tray.

PLAY/PAUSE button

Press to playback/pause

STOP button

Press to stop the playback

SOURCE button

Press to switch between DVD-receiver/Audio

Input/Radio

VOLUME adjuster

Press to adjust volume

REW button

Press to fast reverse

Forward button

Press to fast forward/radio station tuning

Dual-channel MIC Inputs

Headphones outputs

2.2.2 Rear panel connections

Right front speaker input(output from the built-

in amplifier)

Left front speaker input (output from the built-in

amplifier)

Center speaker input(output fro the built-in

amplifier)

Right Surround speaker input(output from the

built-in amplifier)

Left Surround speaker input(output from the

built-in amplifier)

Subwoofer input(output from the build-in

amplifier)

FM Antenna input

AM Antenna input

Audio input

Stereo audio output

Coaxial digital audio output

Component video output Y Cb(pb)Cr(pr)

Optical digital audio output

S-Video output

Composite video output

SCART

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2.2.3 VFD display general view

Playback/pause

DVD-disc

CD-disc

DTS

Mp3

Dolby Digital

Repeat

Stereo

Friquency

Universal letter-digital indicator

2.2.4 Remote control general view

EJECT button

Press to open/close the disc tray.

LANG button

Press to change language.

NEM button

Press to memorize the point where playback was

stopped/playback fro the previously memorized point.

DISP button

Press to display the disc information

Numeric buttons

BROWSE button

Press to turn on/off the browser function.

CURSOR buttons

SETUP button

Press to switch to setup mode.

Button

Press to start rewind/rewind scanning.

KARAOKE button

Press to set the karaoke functions.

Button

Press to stip backward

Button

Press to skip backward

REPEAT button

Press to repeat playback

A-B button

Press to repeat the selected protion.

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Button

Press to turn on/off the sound.

VOLUME+/- button

Press to adjust the volume.

SOURCE button

Press to change the DVD/RADIO/AUX mode.

Button

Press to skip forward

Button

Press to stop the playback.

Button

Press to start forward/ffoward scanning

Button

Press to normal playback/pause

ZOOM+/- button

Press to zoom in/out

CANCEL button

Press to go one level back/cancel current

operation

Ok button

MENU button

DVD disc menu/PCB function

ANGEL button

Press to change the camera angel/change the

Mp3 and JPEG files playback mode

Q-PLAY button

Press to turn the Q-Play mode on.

SUBT button

Press to change the subtitles language/change

the playback mode of Mp3 and JPEG files.

Button

Press to switch the device on/into standby.

2.3 Setlist

DVD receiver

Speakers

Subwoofer

Audio/Video Cord

2xRCA-Mini-Jack audio cord

Speaker cord

FM Antenna

AM Antenna

Remote control

AAA size battery

Warranty card

User manual

DM-998 microphone

Karaoke disc

1PCS

5PCS

2PCS

1PCS

6PCS

1PCS

2PCS

1PCS

2.4 FUNCTION SETTINGS

2.4.1 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 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.

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.

2.4.2 Language settings

1.Menu: inteerface language set-up

#Options:Rusian, English, Ukrainian

#Default option: Englis

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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.

#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.

#If the language you selected is not recorded on

the DVD disc, another available language will

be displayed.

2.4.3 Image settings menu

1.TV system: TV system selection

#Options: Auto, PAL, NTSC.

#Default option: PAL

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.

3.TV Format: image ratio settings

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

TV.

#Default option: 4:3 letterbox.

#Some discs are recorded with support of only

one ratio. The selected ratio must comply with

the TV screen.

4.Video output: selection of video signal

#Options: S-Video, Comp, RGB.

#Default option: Comp.

5.Sharpness: image sharpness adjustment

#Options: High, Medium, Low

#Default option: Medium.

6.Gamma: adjustment of image color

temperature.

#Options: High, Medium, Low, Off.

7.Brighteness: adjustment of image brightness

8.Contrast: adjustment of image contrast

9.Hues: adjustment of image hues

10.Satruation: 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.

#Upon completion press the LEFT button of the

UP/DOWN buttons to return to image setup

menu.

2.4.4 Sound settings menu

1.Mixer

a)Cofiguration: setting of the mode for

conversion of the 5-channel signal to stereo

signal

#Options: Stereo, 5.1.

#Default option: 5.1.

#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+RR, L, R.

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#Default options: L+R.

c)Surr.mix: set-up of surround options while

playing the stereo disc.

#Options: Off, Sum. L+R, Virt. Surr.

#Default options: Sum. L+R,

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 to adjust using the

cursor buttons.

#Adjust the sound volume of each channel using

he cursor buttons.

#Press the OK key 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 button of the cursor buttons, select

the channel, for which you want to set up the

delay, and press OK for confirmation.

#Using the cursor buttons set up the desired

distance from the listener to each

speaker(detailed description of this operation

see on page 32).

#Press the LEFT button to return to speaker

configuration menu.

g)PRO Logic ll: function of stereo sound

conversion to 5-channel sound.

#Options: On, Off, Auto.

#Default option: Off.

#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

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 DVD

receiver’s digital outputs, the decoded 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 receiver’s

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.

#Default option: 48 kHz 16 bit.

3.Sound correction

A)Max volume: max volume limiting

#Using the cursor buttons, adjust the max

volume level.

#Press the LEFT key to return to sound

correction set-up menu.

b)Equalixer: equalizer modes

#Options: Off, rock, pop, live sound, dance

music, techno, classics, soft sound.

#Default option: Off.

c)Echo: echo effects

#Options: Off, concert, living room, hall,

bathroom, cave, arena, cathedral.

#Default option: Off.

d)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.

2.4.5 Playback settings

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1.DVD

Advertisment skip: skip the unskippable

block while playing a DVD disc.

#Options: Yes, number

#Default option: No.

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

on the disc.

3.Files: selection of reproduced files on the disc

#Options: Audio, Pictures, Video.

#Default option: A.P.V.

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

2.4.6 Karaoke settings menu

1.Microphone: microphone on/off

#Options: On, Off.

#Default option: Off.

2.Kar.help: karaoke-disc playback mode

#Options: channels L, channels R, No ast, No

voc.

#Default option: Without solo.

3.Volume:

Microphone: microphone sound volume

level.

#Using the wheel adjust the microphone volume

level.

#Press the LEFT button to return to karaoke

settings menu.

4.Echo: echo level while playing the karaoke-

disc

#Adjust the echo level Using the cursor buttons.

#Press the LEFT button to return to karaoke

settings menu.

2.4.7 Preference settings

1.Equalizer: spectrum analyzer

#Options: On, Off.

#Default option: Off.

2.Sccreensaver: screen saver on/off

#Options: On, Off.

#Default option: On.

2.4.8 Family filter settings

1.Category: set-up of age restrictions to prevent

children fro seeing undesirable discs.

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

17.

#Default option: Any.

2.Change password: set-up of a four-digit

password to change the level of age

restrictions.

#Default option: 7890

2.4.9 Initial settings 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.

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#While being in this menu section, you cannot

return to the previous level by pressing the

LEFT key.

2.4.10 Reset settings to default

Resetting all settings and restoring default

options, except age restrictions level and

password.

2.4.11 Exit settings menu

#Select the exit item using the UP/DOWN

buttons and press the OK key to exit the menu.

2.4.12 Channel delay set-up

Set-up of time delay in the surround

channel

Usually, time delay in the Dolby Digital

decoding system is preset to ensure best effect

while installing the Home Theater. However, in

case you wish 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...

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 Pro 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 two

lines on the chart will give the recommended

delay value.

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, of the central speaker be nearer

to listeners when compared with front speakers’

location, or the central speaker be nearer to the

listener by 1 foot, in all these cases you may set

the delay value for the central channel at 1 ms.

For instance, as shown in Fig.2, if the line C

is by 1 foot shorter than the lines R and L, the

delay value is to be set at 1 ms. If you sofa is

broad enough, and there are several listeners

sitting on it, it makes sense to locate the

speakers in one line, as shown in Fig.3 with the

delay value of the central channel 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”.

2.4.13 “Night” mode

He 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.

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To avoid this, you just have to decrease the

volume of “loud”sounds by simultaneously

increasing 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

signal’s dynamic range while recording;

therefore, 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 Pro Logic surround

Rear channel Stereo 20 Hz-20khz

Mono channel with limited friquency range(100 Hz-

7khz)

Low-frequency

channel(subwoofer)

Available, 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.

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

degree of an equal distance from

listener to ecach speaker.

Surround sound may be received from any signal

source.

Possilility of programmable control

of the decoder to transfer basses into

low-frequency channel in systems

equipped with 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 with conventional stereo,

the world's most popular surround format.

Miscellaneous

2.5 Technical characteristics

Playback discs

Input

DVD-Video, Super VCD, VCD, DivX 4, DivX 5, DivX

Pro, XviD, CD-DA, CD+G, HDCD, MP3, WMA, Kodak

Picture CD, JPEG

2 MIC jacks

FM antenna input

AM antenna input

Stereo audio input(AUX)

DVD receiver

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Output Audio output

Analog audio output: Stereo

Digital audio output: Coaxial, Optical

Video characteristics

Audio characteristics

Operating voltage

Power consumption

FM Tuner

Frequency range

Channel separation

AM Tuner

Frequency range

Speaker system

Output power RMS, 10% THD, 1 kHz

Subwoofer(40Hz)

Front channel

Rear channel

Center channel

Maximum power

Subwoofer

Front channel

Rear channel

Center channel

Operating

temperature

Operating humidity

Dimensions of

DVD-receiver

Weight of DVD-

receiver

Dimensions of

speakers

Subwoofer

Front channel

Rear channel

Center channel

40 50 50

20 20 20

DK1110SI DK1112SI DK1114SI

325 310 200 325 310 200 325 310 200

80 101 165 80 101 165 150 90 86

5-35

15-75%(no condensation)

60×380×350mm

3.4kg

Video amplitude: 1.0Vp-p(75 )

S-Video amplitde: Y:0.7vP-P(75 )

Component video amplitude: C:0.286vP-P(75 )

1.0vP-P(75 )

Cb/Cr:0.7Vp-p(75 )

Frequency response 20-20000Hz( 1 Db)

Signal-to-noise ratio 90(dB)

THD 1%

~220V,50/60 Hz

250W

87.5-108 MHz

>35dB

522-1611kHz

DK1110SI DK1112SI DK1114SI

25 25 25

12 12 12

DVD receiver

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

and technical characteristics may be modified without prior notice.

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

and recording format.

- 13 -

3.1.1 Features of the player

Progressive scanning output to produce steadier and clearer pictures

Composite video, S-video and component video output. 5.1CH output

Digital picture adjustment to the sharpness, brightness, contrast, chroma and saturation of

pictures, gamma correction

Karaoke function. Built-in Dolby digital decoder

Hi-Fi stereo headphone output

FM/AM digital tuning function, capable of storing (memorizing) 20 FM/AM radio stations each

Power amplifier adopts high-performance large-power IC, with complete protection function and

perfect sound quality

Compatible with DIVX, MPEG4 format movie

Subwoofer adopts large-diameter bass unit with large-capacity body, with deep and dynamic

bass effect

3.1.2 Block diagram of the player

This player is composed of decode & servo board, power amplifier board, input/output board, panel,

headphone board, tuner, power board and loader. Block diagram of the player is shown in the figure

3.1.2.1. Except that power board is not shown, other signal flow is shown in the figure basically. Main

function of loader is to read disc information and transmit to MT1389E, MT1389E fulfils servo function

through Ba5954 on decode board and other subsidiary circuit; and ensures normal working of loader

through other circuits. FLASH on decode board is to save system program, SDRAM is to save program

when the player is working and read sound and picture information from disc to ensure smooth output.

The main function of power amplifier board is to perform DA conversion and amplification of analog

signals to output 5.1CH and ensure normal working of external speaker. The main function of AV board

is to output various audio and video signals. This player is also with headphone and microphone to meet

client’s requirements. In addition, there is external sound input , power amplifier board of this player may

be used to amplify power to facilitate to output to speaker. Tuner in this player also makes it have tuning

function.

Chapter Three Principle and Servicing

Section One Principle of the Player

- 14 -

SCART

Coaxial

Cr/Pr Cb/Pb AUX-in

MIX-out

COMP

1DVR938-3

SPDIF

OpticalS-video

Composite video

MIC1/MIC2

LRSWMUT/SCMUT

TDA8947

PT2314

AUXR/AUXL

TROUT/TLOUT

SL/SR/C

SW3

LF/RF

SWOUT+

SWOUT-

LOUT

ROUT

LM4580

HL/HR

SROUT

COUT

SLOUT

12V1

4DK1110

LO/RO

LPF/

amplifying

M62429

LRSWM

SCM

TDA8947

CS5340

Add/LPF/amplifying

LPF/amplifying

Add/LPF/amplifying

Mute

Mute control

circuit

MT1389E

24C02

FLASH

SCL

SDA

CD4094

SDATA0

VSDA/DTSDI

VSCK/DTSCL

2DK1110

Gating signal

Data/address line

Data/

address line

SDRAM

D5954

Mute control signal

Main axis/focus/trace/feed

Loader

Disc data/laser power control identification

VSTB

6DK1110

9DK1110

SN1692

BDK1 110

Digital

potentiometer

MIC socket

Headphone

socket

Tuner

A+5V

De-panel

De-decode board

De-power amplifier

board

De-power amplifier

board

~220V

D+5V

D+3.3V

-12V

+12V

+22V

5L0380

KAIM0880

Transformer

Voltage stabilizing

and filtering

Voltage stabilizing

and filtering

Photoelectric

coupler

sampling

Voltage stabilizing

the second time

Bridge

rectification

Voltage stabilizing

and filtering

Voltage stabilizing

and filtering

Voltage stabilizing

and filtering

Photoelectric

coupler

Sampling

Figure 3.1.2.1 Block diagram of the player

- 15 -

SL+

SL-

LIMIT

GND

SP+

SP-

LO-

LO+

TRO

GND

TRI

XS302

Loader board

Loader

XS303

Software

upgrading

X110

Headphone

board

AGND

HDET

MIC1

AGND

MIC2

MIC

board

X100

DTS_CE

DTS_DL

DTS_CL

DTS_DO

DGND

+12V

TLOUT

AGND

TROUT

Tuner

XP102

D+5V

D-GND

D+3V3

A-GND

A+5V

D-GND

D+5V

FL+

FL-

-21V

XS505

Power

board

XP203

A+5V

A-GND

A+5V

A-12V

A-GND

A+12V

XS504

P+28V

GNDP-

XS503

CLOCK

STB

DATA

XS100

Front panel

+5V

GND

X100

AGND

DTS_CE

AGND

GND

SDA

HDET

OK-DAT

DTS_DO

DTS_CL

DTS_DI

GND

SBCLK

SLRCLK

SCMUT

GND

SCL

P_RST

SCL1

LRSWMUT

SDAT

GND

SMCLK

Power amplifier board

XS601

XS100

MIC1

AGND

MIC2

AGND

HDET

X110

DTS_CE

DTS_DL

DTS_CL

DTS_DO

DGND

+12V

TLOUT

AGND

TROUT

XS101

DV33

DGND

+5V

-12V

AGND

+12V

CON7

PVCC

GND

XP100

AUXR

AUXL

+12V

+5V

AGND

Input/output board

XP206

AUXR

AUXL

+12V

D+5V

AGND

SPDIF

HSYNC

VSYNC

VDATA3

GND

XP401

Speaker

Dv33

RXD

TXD

GND

XS202

XS302

LO-

LO+

TRO

GND

TRI

SL+

SL-

LIMIT

GND

SP+

SP-

XS303

VSCK

VSTB

VSDA

XS201

VCC

GND

DV33

GND

AVCC

XP203

XS206

XS207

Decode board

24PIN

IEC958

B/C

R/Y

HSYNC#

VSYNC#

VDATA3

GND

R/Y

B/C

GND

CVBS

GND

AGND3

DTS_CE

AGND

GND

SDA

HDET

OK-DAT

DTS_DO

DTS_CL

DTS_DI

GND

SBCLK

SLRCLK

SCMUT

AGND

SCL

P_RST

SCL1

SDAT

GND

SMCLK

LRSWMUT

XS301

XS101

3.1.3 PCB board composition diagram of the player

PCB board composition diagram of the player is shown in the figure 3.1.3.1:

Figure3.1.2.1PC Bboard block diagram of the player

- 16 -

3.1.4 Introduction to IC used in this player

Introduction to IC used in DK1110SI is shown in the following table:

PCB semi-finished

product

IC model Location Function

MT1389E U201 Decode chip

24C02 U202 EEPROM

HCU04 U205 Phase inverter

LM1117 U206 Precision voltage stabilizer

29LV160BE U207 16M FLASH

HY57V641620HGT-7 U208 64M SDRAM

CD4094 U213 Serial and parallel connection conversion

D5954 U301 Servo drive

4558 N101 N102,N103,N104 Audio amplifying

M62429 N105 Volume control

TDA8947J N106,N110 Digital pow er amplifier

RC4580 N107 Audio amplifying

CS5340 N108 A/D conversion

PT2314 N111 Audio proc essing

PT6961 N100 Panel control IC

HS0038A2 N101 Remote control rec eiver

KA5L0380R U501 Power sw itch IC

HS817 U502,U506 Photoelectric coupler

TL431 U503,U507 Precision voltage stabilizer

LM7805 U504 Voltage stabilizing tube

KA1M0880BTU U505 Power sw itch IC

Powr board

Decode board

Pow er amp lifie r

board

Mainpanel

- 17 -

3.2.1 Loader signal explanation

Loader signals explanation is shown in the following table:

Section Two Unit Circuit Principle

Pin Name

Signal flow

direction

DVD disc CD disc No disc Function description

1 F- Input loader 2.52 2.34 0.46

2 F+ Input loader 2.49 2.49 0.93

3 T+ Input loader 2.53 2.51 0.94

4 T- Input loader 2.58 2.51 0.93

5 C Input MT1389 2.2 2.25 2.04 Disc data signal

6 D Input MT1389 2.2 3.2 2.04 Disc data signal

7 IOA Input MT1389 0.01 3.2 3.21

Disc identification signal, CD is 3.3V, DVD

is 0V

8 RF Input MT1389 2.21 2.53 1.28 The sum of disc data signal

9 A Input MT1389 2.17 2.22 2.04 Disc data signal

10 B Input MT1389 2.19 2.27 2.04 Disc data signal

11 F Input MT1389 2.07 2.44 2.03 Supplementary signal us ed in trace

12 GND Ground 0.01 0.01 0 Grounding

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 E Input MT1389 2.06 2.45 2.03 Disc data signal

16 Blanking haning in air 0.01 0 0 unused

17 VR-CD Input loader 0.21 0.01 0

Through the handling inside loader, make

sure MD11 is 180mV when reading CD

18 VR-DVD Input loader 0.01 0.2 0

Through the handling inside loader, make

sure MD11 is 180mV when reading DVD

19 LD-CD Input loader 0.09 2.1 0 CD laser power control signal

20 MDI I Input MT1389 0.21 0.2 0

CD 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

- 18 -

22 Blanking unused 0.01 0.1 0

23 LD-DVD Input loader 2.21 0.1 0 DVD laser power control signal

24 GND unused 0.01 0.01 0 Grounding

Note: 1. When reading DVD, there are only A, B, C, D signals

2. When reading CD, there are A, B, C, D, E, F signals.

3. RFO=A+B+C+D.

4. Focus error signal=(A+C)-(B+D) Trace error signal=E-F.

3.2.2 Servo circuit

1. DK1110SI adopts SANYO HD62 loader and MTK decode solution (MT1389E+FLASH

(16M)+SDRAM (64M)). Its servo circuit is mainly composed of front signal processing and digital servo

processing, digital signal processing IC MT1389E and drive circuit D5954, in which MT1389E is also the

main part of decode circuit, shown in the figure 3.2.2.1:

Figure 3.2.2.1 Servo circuit block diagram

Loader

XS301

DVD laser power control

VCD laser power control

Disc identification

circuit

Open/close

electric

machine

and

detect

switch

Open/close circuit

TROPEN

TRCLOSE

TRIN

TROUT

150

148

IOA

ABCDEFabcd

D5954

Feed electric

machine on loader

SL+

SL-

SP-

SP+

Main axis

braking circuit

Main axis electric

machine on loader

Integration circuit

OPO

ADIN

OP-

OP+

MT1389E

- 19 -

2. Working principle: after powering on or disc in, according to IOA signal, disc identification circuit

decides through which path of variable resistor the laser detecting diode gets path to the ground,

meanwhile MT1389E decides whether DVD laser or VCD laser is emitted according to IOA signal, which

can be fulfilled through laser power control circuit. When IOA is high level (3.3V), Mt1389E pulls LOD1 of

Q302 base electrode in laser tube power control connected to VCD down to about 2.2V to make Q302

on and to make VCD laser tube emit beam; then decides whether to pull up or pull down LOD1 according

to voltage after the feedback from MDI1 to control the power of light emission diode. Similarly, when IOA

is low level (0V), MT1389E pulls LOD2 of Q301 base electrode in laser tube power control connected to

DVD down to about 2.2V to make Q301 on and to make DVD laser tube emit beam; then decides

whether to pull up or down LOD2 according to the voltage after the feedback from MDI1.

After loader reading disc information, A, B, C, D, E, F signals are sent out to Mt1389E (DVD only

has A, B, C, D signals), and then inputted from pin 2~11, 18, 19 of MT1389E. After being amplified and

processed by the pre-amplifier inside MT1389E, now signals are separated to two part s for processing

inside Mt1389E.

After being processed by digital servo signal circuit inside MT1389E, one part of signal form

corresponding servo control signals and output FOO, TRO, DMO, FMO digital servo control signals from

pin 42, pin 41, pin 37, pin 38 of MT1389E respectively, then change into analog servo control signal

FOSO, TRSO, DMSO, FMSO through integration circuit composed by resistor capacitor, and send to

driver circuit D5954 for amplification to bring along focus winding, trace winding, main axis electric

machine and feed electric machine after drive amplification. Among these, focus and trace servo are

used to correct objective position accurately; feed servo is used to bring along laser head to make radial

large-scale move which belongs to the preliminary adjustment to pick-up position; and main axis servo is

used to control main axis electric machine to make it read signals in means of constant linear velocity

and bring along disc to rotate.

After processing of amplification by VGA voltage control amplifier and equalization frequency

compensation inside MT1389E, another part of signals are changed into digital signals through internal

A/D converter. When loader is reading CD/VCD signals, these signals are conducted EFM demodulation

inside MT1389E, and then outputted to latter stage for AV decoding after finishing CIRC (Cross-

Interleaved Reed-Solomon Code) error correction inside. When loader is reading DVD signals, these

signals are conducted ESM demodulation inside MT1389E, and then sent to latter stage for decoding

after finishing RSPC error correction inside.

The other part of servo is open/close disc tray circuit. After panel or remote controller emits

open/close disc tray signal to MT1389E, in usual conditions, TROPEN and TRCLOSE sent out by pin 39,

99 of Mt1389E are both low level, when signal of “open” comes, after Mt1389E makes disc stop rotating

through main axis braking circuit, TRCLOSE is set high to make open/close electric machine on loader

frame run to bring along dist tray to eject. After disc tray ejecting to proper signal of opening to proper

position (TR_OUT) is set high level (0V) through the detecting switch on loader frame, MT1389E pulls

- 20 -

down TRCLOSE and open/close electric machine stop running. When MT1389E receiving “close” signal,

TROPEN is set high level by MT1389E, open/clode electric machine tuns conversely to bring along disc

Tray to close. After disc tray closing to proper position, signal of closing to proper position (TR_IN) is set

low level through the detecting switch on loader frame, MT1389E pulls down TROPEN and electric

machine stops running to finish “close” process.

3. Explanation to servo terms

(1) FOO: for disc make differences, and when rotating disc may probably move upwards or

downwards slightly to make the focus of laser emitted by laser head cannot justly fall on data pit of disc,

now focus point of objective lens is required to adjust to make focus aim at data pit exactly. The acts are

mainly to make objective lens move upwards and downwards.

(2) TRO: data information is saved in disc in form of tracks. When disc is rotating, disc deviation will

produce, now laser head is required to adjust. In this process, objective lens makes forward and

backward movement with small moving range.

(3) FMO: similar to acts of trace, the acts of feed are larger than those of trace. Feed conducts a

large scale movement firstly, and then trace moves slightly in this range. Feed moves for a while, and

does not move for another while; but trace moves all the time. Feed is rough adjustment and trace is fine.

And acts are obvious when power on and selecting track.

(4) DMO: it is the top that holds up disc. Its rotation speed decides that of disc. Its rotation is

generated by an individual DC electric machine, in which rotation speed of DVD is twice over that of CD.

4. Key point voltage (unit: V) is shown in the following table:

Name

w hen reading

disc nor mally

w hen opening door w hen closing door

w hen no disc

TRO PEN 0

There is about 3.3V pulse w ith 1S at

the moment of opening door

0 0

TRCLO SE 0 0V

There is about 3.3V pulse w ith 1S at the

moment of opening door

TROUT 3.41V 3.3V 0V 0V 3.3V 3.3V

TRIN 0 0V 3.3V 3.3V 0V 0

OPO 2.61V 2.75V 2.64V 2.61V

ADIN 2.61V 2.76V 2.61V 2.61V

OP+ 1.66V 1.81V 1.27V 1.81V

OP- 1.85V 2.12V 1.47V 2.04V

- 21 -

3.2.3 Mute circuit

DK1110SI mute control circuit includes power-on mute control, power-off mute control and usual

mute function.

1. Power-on mute is shown in the figure 3.2.3.1. When voltage of pin 5, 10 of power IC TDA8947 is

lower than power supply voltage 3.5V of this IC, this IC enters MUTE mode, from 0 to 0.8V, it is STANBY

mode.

When power on, due to the function of Tc147 charge, V102 cuts off at the beginning, V103 is on,

HERDM is low level, shown in the figure 3.2.3.2. Seen from the figure, when HARDM is low, SCM,

LRSWM are pulled down to fulfil power-on mute.

TC147

22uF/25V

V102

C9014

VD111

5.1V

VD110

1N4148

R178

100K

R180

47K

PVcc

V103

8050

R181

10K

HARDM

R179

47K

+12V

Figure 3.2.3.1 Power-on mute circuit

2. Usual mute: 1389 sends out control signal SCMUT, LRSWMUT to control the on of triode V101,

V104 to make SCM, LRSWM be low level to fulfill mute function.

3. Power-off mute: V100 realizes power-off mute function. When +12V power failure, Tc136 still

keeps high level, now base electrode of V100 is low, V100 is on, base electrode of V101, V104 gets high

level and they are on to realize power-off mute function.

LRSWMUT

SCMUT

V101

9014

SCM

V104

9014

R166

10K

LRSWM

R165

10K

C146

104

C156

104

VD108

1N4148

VD109

1N4148

HARDM

VD106

VD112

1N4148

VD105

R162

220

+12V

R163

22K

R164

22K

V100

8550

TC136

16V/100U

VD107

1N4148

VD120

1N4148

12V1

VD128

1N4004

PVcc

Figure 3.2.3.2 Mute circuit

- 22 -

Figure 3.2.4.1 Open/close door circuit diagram

R325

510R

R327

510R

Q309

8050D

Q308

8050D

Q306

8550D

Q307

8550D

R323

1.5K

R324

1.5K

R339

10K

R326

2.2R\1/4W

TC305

47uF/16V

TC306

47uF/16V

LOAD+

LOAD-

MO_VCC

TRCLOSE

Q310

9014-S

TROPEN

2. Working principle:

Open door, VCC Q306CE electrode is on LOAD+ electric machine LOAD-

Q309CE electrode is on R326 ground

When action of opening door is not performed, pin 99 and 39 of MT1389E are low level. When

opening door, pin 99 of MT1389E send out a high level, Q309 is on, collector electrode of Q309 changes

to low level, LOAD- changes to low level, base electrode of Q306 changes to low level, Q306 is on,

collector electrode of Q306 changes to high level and LOAD+ changes to high level.

Close door: VCC Q307CE electrode is on LOAD- electric machine LOAD+ Q308CE

eklectrode is on R326 ground

When closing door, pin 39 of Mt1389 sends out a high level, Q308 is on, collector electrode

changes to low level, LOAD+ is low level, base electrode of Q307 changes to low level through R324,

Q307 is on, collector electrode of Q307 changes to high level, LOAD- changes to high level.

4. When inserting headphone, friction will produce noise, so these noise should be filtered. When

inserting, HDET pin is grounded and low level, which is sent to 188 pin of 1389E, 1389E receives HDET

low level and sends out control signal to TDA8947, output stops and mute function is realized.

Note: when inserting headphone, mixed left/right channel on AV board has output, audio signals on

power amplifier board have no output; when in mute, all has no output.

3.2.4 Open/close door circuit

1. Open/close door circuit diagram is shown in the figure 3.2.4.1:

- 23 -

Figure 3.2.5.1 Reset circuit diagram

C1003

225

TC320

100uF/16V

R2011

75K

R2023

47K

R2024

FLASH

5 6

U205C

HCU04

URST#

DV33

R2022

0R(DNS)

Q320

8550D

R2025

D215

1N4148

C1004

102

33R

MT1389E

Cs5340

101

2. Working principle: when power on, voltage on two ends of capacitor Tc320 cannot change

suddenly, anode of capacitor begins charging from 0V, now triode Q320 is on, pin 5 of input end of phase

inverter U205C (HCU04) is high level, pin 6 of output end is low level and performs reset to chip

MT1389E, FLASH, TAS5508 and Cs5340; when capacitor charge is close to 3.3V, triode Q320 cuts off,

pin 5 of input end of phase inverter is low level, phase inverter outputs high level from pin 6 and system

reset finishes.

3. Key point voltage (unit: V) is shown in the following table:

The function of Q310 is to interlock TRCLOSE and TROPEN signals to ensure that the two are not

high level at the same time. When the two are high level input, the on of Q310 makes base electrode of

Q309 be low level to ensure the normal working of open/clode door circuit, electrolyte capacitor TC306

and TC305 are used to prevent the sudden change of two ends of in/out control electric machine and

make the action gentle.

3.2.5 Reset circuit

1. Reset circuit is shown in the figure 3.2.5.1:

Key point Position Voltage Remark

DV33 (point A) Diode D215 cathode 3.3V

Af ter pow er of f, TC320 discharge c urrent f rom

this point

point B Diode D215 anode Af ter reset finishes , 3.3V

Af ter res et finishes , voltage increases to 3.3V

fr om 0V

point C Phase inverter pin 5 Af ter reset finishes , 0V

Af ter res et finishes , voltage decreases to 0V

fr om 3.3V

URST# (point D) Joint place of R256 and R253 Af ter reset finishes , 3.3V

Af ter res et finishes , voltage increases to 3.3V

fr om 0V

- 24 -

R321

R320

150K

R319

150K

R322

680K

R317

680K

R318

C307

222

ADIN

OP-

OP+

V1P4

SP-

OPO

C308

222

SPL-

3.2.6 Main axis braking control circuit

1. Main axis braking control circuit is shown in the figure 3.2.6.1:

Figure 3.2.6.1 Mai axis braking control circuit

Equivalent circuit is shown in the figure 3.2.6.2:

Figure 3.2.6.2 Main axis braking control equivalent circuit diagram

Internal

processing

R321

R320

150K

R319

150K

R322

680K

R317

680K

R318

C307

222

ADIN

OP-

OP+

V1P4

SP-

OPO

C308

222

SPL-

2. In order to prolong the usage life of electric machine and increase the influence of start-up

current to electric machine, when disc is in, R&D personnel design main axis electric machine into

running state all the time, even though STOP button is pressed. Thus, when pressing OPEN button, a

braking signal is required to make main axis electric machine stop rotating immediately to fulfill door

opening in short period.

During the course of playing, if OPEN button is pressed, main axis braking signal disappears, but

main axis electric machine is still in rotating state due to the function of inertia, now the inductive

electromotive force that produces from the rotation of electric machine achieves inductive voltage on

- 25 -

sampling resistor R321, through resistor R319, R320 with pin 35, 36 of MT1389E, after being processed

and amplified inside, output from pin 34, then through R318, send to pin 47 of MT1389E, through

MT1389E internal D/A conversion and relevant processing, pin 37 of MT1389E outputs an instant

electric machine reverse braking signal to make main axis electric machine speed down, when

MT1389E detects that disc stops rotating, disc tray will be out to ensure that disc will not rotate when

door opens.

3. Key point voltage (unit: V) is shown in the following table:

Key point Position Normal w orking voltage (V) Voltage var iation when opening door (V )

SP+ pin 11 of D5954, pin 5 of XS303 3.79 3.79 0.70 1.80

SP- pin 12 of D5954, pin 6 of XS303 1.38 1.38 3.40 1.80

OP+ MT1389E pin 36/B 1.38 1.38 3.10 1.80

OP- MT1389E pin 35/A 1.53 1.53 3.08 1.98

OPO MT1389E pin 34/C 2.44 2.44 0.40 2.50

ADIN MT1389E pin 43/D 2.44 2.41 0.41 2.44

DMSO D5954 pin 5 1.42 1.42

VIP4 MT1389E pin 40 1.41 1.41

Figure 3.2.7.1 Disc identification circuit

2. Working principle: the function of disc identification circuit is to recognise the disc inserted into

loader to judge whether the disc is VCD or DVD to make the relevant control action. When disc is

inserted, decode servo control IC MT1389E defaults disc to be DVD, pin 90 of MT1389E sends out a low

R309

10K

R308

100K

R311

10K

R310

100K

Q303

2SK3018-S

Q304

2SK3018-S

Q305

3904-S

IOA

AVCC

Loader

XS301

MT1389E

3.2.7 Disc identification circuit

1. Disc identification circuit is shown in the figure 3.2.7.1:

- 26 -

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