Akai DVR-4015-VSS Service Manual

DVD PLAYER

Model:

DVR4015VSS

SERVICE MANUAL

www.akai.ru

▲ Safety information ----------------------------3

General guid-----------------------------3

1．

Low zeta potential leaking inspection ---3

2．

High zeta potential leaking inspection --3

3．

▲ Device avoiding ES(Electric Susceptible)

Influence of ESD (Electric Susceptible

Discharge)-----------------------------------------3

Technical specification ----------------------4

▲

Mechanical diagram ------------------ ------8

▲

Mechanical Parts------------------------- 9

Packing and accessories ---------------------10

▲

Disassemble and assemble-------------------11

▲

Take out disc from trouble player ----11

1．

PCB position ------------------------11

2．

Disassemble and assemble parts of the unit

▲

▲ Attachment 3---------------------------32

Component list

▲

AV output board component list --------33

1．

Decoder board component list ----------36

2．

Control board component list -----------39

3．

-----------------------------------------------12

Can open the tray by electricity -----12

1．

Can not open the tray by electricity --12

2．

Assemble the unit -------------------12

3．

▲ Attachment 1----------------- 13

▲ Block Diagram/Electric circuit diagram

Block diagram ------------------------14

1．

Electric circuit diagram ---------------15

2．

Decoder board diagram ---------------16

3．

AV output board diagram -------------20

4．

Control board diagram ----------------23

5．

▲ Attachment 2------------------24 ▲ PCB Diagram

1． Upper decode board PCB diagram ----25

Lower decoder board PCB diagram ---26

2．

AV output board PCB diagram --------27

3． 4． Control board PCB diagram -----30

SAFETY INFORMATION

General guide

1.Observe the original circuit during maintenance. if short circuit occurs, change the over-hot or damaged components.

2.Observe all the protective device after maintenance, such as whether the shielding cover or paper is assembled well.

3.To avoid electric shock, please inspect electricity leakage after maintenance

1.Take out AC cord and connect a piece of wire between two legs of the outlet.

2.Use Gear R x 10K of the voltmeter to measure the spares

Device avoiding ES(Electric Susceptible) Influence of ESD (Electric Susceptible Discharge

exceeded the restrained figure, electric shock should be possibly suffered. Do maintain the unit and inspect once more before return to the user.

Device avoiding ES influence of ESD.

Some solid semi-conductor devices are easy to be damaged by static electricity. These devices are generally called ES device. The typical devices are IC, field effect

Low zeta potential leaking inspection

component and semi-conductor laser diode.

The following technology helps to abate the danger of ESD on body before handle any semi-conductor or semi-conductor component. Or wear the ESD bangle availed

on AC outlet and exposed metallic part with short circuit. The resistance between screw cap, control shaft should be unlimited.

from the market to eliminate the threaten of static electricity on human body.

2.Put the electronic parts with ES device on the surface of

creepage checking circuit

to have discover metal accessory of equipment

AC voltage table

uF

Ω

cold water

canal（earthing）

picture 1

High zeta potential leakage inspection

.As illustrated 1, Connect Resistor with 1.5K, 10W and capacitor 0.15 between exposed metallic part and device of fine connection to the earth (water pipe etc.).

2.Plug-in AC cord directly to AC outlet. Do not inspect with shield adaptor.

3.Utilize 1000 or more sensitive voltmeter to measure alternating voltage.

4.Turn back the AC plug-in from AC outlet then iterate the inspection as above.

5.Inspect the voltage of the resistor between other exposed metallic parts and the earth with the same way.

6. The voltage must not be over than 0.75Vrms at any points on the resistor. Electric leakage should not be over 0.5mA when processing high voltage leakage testing through

conductor such as aluminium foil after take them out in order to protect static electricity from accumulation and explosion.

3.Solder or disassemble ES device through iron connecting the earth.

4. Utilize device only anti-static electricity to disassemble soldering tin. Non-anti static electricity device (ESC protection) will release ES that damage ES device.

5.Do not use chemical volatile releasing static electricity that leads to damage ES device

6. Unless preparation for pre-assembling has been made, do not take out the ES device to be changed from the protective packing ( most of the changed ES devices are packed together with anti-static electrical foam or similar electric material, besides, countermeasures for down-lead short circuit are taken.).

7. Protective material should connect the model or the circuit component to be assembled in it before taking out the protective material from the ES device.

Note: do not bear electricity to the model or the circuit, and pay attention to all the other safety information.

8. When disassembling and replacing the ES device, try to reduce body movement (Or, the movement of legs, the friction of fibrous of clothes, or elevating the legs from the floor will generate static electricity ESD, causing damage to the ES device.).

Technical specification

DVD Electric gudideline 1：Video parts

NO. Test items Test point Performance request Units Remake

1 video 1.0±0.2 Vp-p

Y 0.7±0.14 Vp-p

2

3 Y.Cr. Cb/Y.Pr.Pb 0.7+/-0.14 Vp-p

4

5 Level definition ≥450 lines

6 bandwidth(+3/-6 dB) ≥5.5 MHz 100KHz 0 dB

7 differential coefficient bit DP ≤2 degree 75Ω loads

8 Lum non distortion ≤5 % 75Ω loads

9 Differential plus DG ≤2 % 75Ω loads

10 Y ≥56 (except power) dB 75Ω loads

11 C

12

2：Audio(Test signals：TCD-784)

NO. Test items Test point Performance request Units Remark

1

2 Breadth rage response ± 1.5 dB DVD(LPCM) 20Hz~20KHz

3 S/N ≥80 dB A count power

4 THD 10 % 1KHz A count power 10W

5 Condition areas 90 dB 1KHz A count power

6 Separate degree 70 dB 1KHz A count power

7 Channel inbalance ≤1.0 dB DVD(LPCM)、CD

8 Coaxial output range 0.5±20% Vp-p 75Ω± 1% loads

9 Optical output wavelengh (λp) 660±30 nm

3：Other characteristic parts

NO. Test items Test point Capability request Units Remark

1 Load time 10 S

2 Remote control for instance ≥5 m Front surface±15°areas

3 Input power voltage 230V±10% 50Hz

4 Expend power 110W Normal works

5 Deposited condition of temperature -25～+55 °C

6 Works condition of temperature 0～+40 °C

7 Freedom lower Accord GB/T 2423.8-1995 request

8 Disc formats

4：Test condition1.condition：normal temperature，normal voltage 2.power voltage：AC 230V 50Hz

3. speaker impedance: 8Ω

Output

range

S/N ratio

Lines audio input, output levels

S-vid

eo

C

R.G.B 0.7+/-0.14 Vp-p

R

G

B

chroma 0.88±0.176 Vp-p

Color sync 0.3±0.06 Vp-p

U channel ≥50 dB 75Ω loads

V channel ≥50 dB 75Ω loads

R channel ≥50 dB 75Ω loads

G channel ≥50 dB 75Ω loads

B channel ≥50 dB 75Ω loads

(1)DVD:

12cm single side, single layer;12cm single face, double layer;12cm double face. Double layer;

8cm single face, single layer; 8cm single face, double layer;8cm double face, double layer.

(2)CD disc:12cm disc,8cm disc

1.8+0.2/-0.8 Vrms

4

DVD(LPCM)、CD

Audio input impedance:10KΩ

Technical specification

AV output board electric guideline production model：AKAI DV-R4015VSS

Items Unit Model

Value

POWER PARTS 1 Input voltage areas V 2 Rating output voltage

and current

-16V 2.2A +16V 3A

AC

+5V 1.3A +5V 1.5A

AC3.7V

-24V 50mA -24V 50mA

3 The least of output

power 4 +5 output veins wave mV <50 4 Power tune rate(+5V

port) 6 Loads tune rate(+5V

port)

AV output parts 7 Works voltage V ±16 ±20 RL=8Ω 8 Static state current mA 380 630 9 Output power W 12 14

10 (FR/FL/SR/SL/CENT) 9 11 11 Subwoofer output

power

12 After all humorous

wave distortion

0.7

13 Bunch sound dB 70

60 50

14 S/N dB

15 Breadth response dB

W 110 Input voltage AC230 ±

% 5 Input voltage AC230 ±

% 5 current10mA-1.5A

W 30 35

% 0.03 0.07

230±10%

100mA

80

± 1.5

Limited

value

AC3.7V 120mA

75

40~18KHz

Test condition

10%V

THD = 10% RL = 8Ω THD = 1% RL = 8Ω THD = 10% RL = 8Ω

RL = 8Ω ; PO = 1W; f = 1KHz

RL = 8Ω ;PO = 0.1 to 7W;f = 100Hz to 15KHz f = 1KHz f = 10KHz

A count power

5

Electric Specification book

FM electric guideline Model:AKAI DV-R4015VSS Test condition:

1.power supply voltage: AC 230V 50Hz 2.standard output power: 1W

3.sound speaker impedance: 8Ω

4.standard confection: 1000Hz 22.5 KHz frequency deflection 5.Aerials impedance:75Ω

NO.

1 Intermediate frequency MHz 10.7 +/-0.1 2 Cover with areas MHz 87.5- 108 +/-0.1 3 Graduation

error

4 Chirp

limited is sensitive to degree

5

S/N ratio （98MHz,input 1mV except power） 6 -3dB Limited delicacy degree 7

Intermediate frequency restrain（90MHz） dB 50 45 8

Lens restrain compete（106MHz） dB 28 22 9

Distortion degree（1mV input） % 0.6 1.5

10

Confection AC sound（input 5mV） dB 50 40

11 AFC areas(1mV input,-3dB) 12

AM restrain(1mv input, confection degree 30%) dB 32 26

13

Output power （ distortion10%,60Khzfrequency

leaning, 1mv input）

14

Breadth response（-3dB） Hz

15

The lease of volume mV 1 3

16 Locking station delicacy degree 17 separate degree

Test items units Standard Limited Error

90MHz 106MHz

90MHz 22.5KHz frequency deflection S/N 30dB

98MHz 22.5KHz frequency deflection S/N 30dB 106MHz 22.5KHz frequency deflection S/N 30dB

KHz

dBµV ≤26 ≤32

dB

µV 10 20

KHz

W 10

dB ≥28

dB 25 20

≥50 ≥34

40Hz-12.5KHz

100Hz-8KHz

6

Electric Specification book

Mw electric guideline Model:AKAI DV-R4015VSS Test condition:

1.power supply voltage: AC 230V 50Hz 2.standard output power:1W

3.loundspeaker impedance: 8Ω 4.standard confection: 400Hz 30% confection degree

No

.

1 Intermediate frequency KHz 450 +/-3 2 Cover with areas KHz 522-1620 +/-5

Chirp limited is

4

sensitive to degree

S/N SNR（999 KHz ,input 10mV/M, standard confection 1KHz A count power）

5 6

Intermediate frequency restrain compete（612KHz） dB 45 35

7

Lens restrain compete（1413KHz） dB ≥34 ≥20

8

AFC（input100mV/M） dB 30 20

Distortion

9

10 -6dBbandwidth (20dB S/N) KHz 11

12

13

14

15 16 17 Locking station delicacy degree

degree

whistle(input 5mV/M,IFx1 IFx2) % 3 10

Output power +/-10KHz selectivity (on 1000KHz 20dB S/N） dB 14 8

Breadths response （-6 dB, input 5mV/M） Hz 40Hz-4KHz 100Hz-3.1

Confection AC sound（input 100mV/M） dB 40 35 The least of volume yawp mV 1 3

S/N 20dB, 612KHz S/N 20dB, 999KHz S/N 20dB,1413KHz

5mV/M input,30％confection degree % 1 3 100mV/M input,80％confection degree % 3 5

Volume largest W

Distortion degree10% ,80% confection, input5mV/M

Test Items Unit Standard Limited Error

dBµV/M dBµV/M ≤70 ≤75 dBµV/M ≤70 ≤75

dB ≥40 ≥34

W 10

dB ≤90

8 5-10

≤75

5KHz

7

36 36

36

11

37

34

1

4

5

37

34

15

13

14

34

9

17

12

34

10

37

2

3

37

36

35

16

34

7

6

38

19

35

17

34

8

36

18

35

20

36

32

36

30

35

26

35

18

38

25

35

25

35

23

31

33

34

33

34

33

34

29

35

24

35

25

27

25

35

25

35

25

38

28

35

25

Mechanic parts of decompose diagram

8

21

38

22

23

21

22

23

24

MACHINE PARTS OF COMPONENT LIST

NO.

2 3 4 5 6 7 8 9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

MATERIAL NO.

Y9-01012C-33 Y9-01012C-32 Y9-01012C-31

Y1-010171-00 Q1-010120-14

Y1-0101G1-00 Y9-01016C-20 A5-010120-40 Q1-0101D0-04

Y3-060160-10

A5-010120-41

A6-000000-41

T1-400022-00 N2-604829-79

N4-230101-L0

N4-230101-R0

Y3-01016C-24

Y3-140160-20

Q3-050121-00

Q4-010120-00

Y3-130150-20 Y3-130150-50 Y3-130151-20 Y3-130151-50

Y3-030260-20

A5-010120-20

A5-010120-10

A8-114100-20

Q2-010120-16 S1-811048-01

Y6-440003-00

WD-222232-01

N2-300615-54

N2-300812-19

N2-301215-54 N2-300815-54 N2-300614-54

N2-300812-14

APPELLATION

Lens1 Lens3

Lens2 7KEY key surface

Vol button

Lead

control board

disc tray uuper cover board plank

control board core round power transformer

transformer sleeping bolt K60×48 door spring door spring（right）

core plank

PCB plank(core using

uuper cover board motherboard

front f e et front f e et mat back feet back feet mat

PCB mat

AV output board decode board

Incept nog

back baord power switchs PS8-11-D-048 line button SB4F-4 power cord2.2m 250V 2.5A VDE attention PWTT3×6（adding forcedly）white

PA3×8

PWTT3 PWB3 KTT3

ST3×8 PANi

（left）

）

×12（adding forcedly）white

×8（adding forcedly）white

×6 sink head

QTY

1 1 1

1

1 1

1

1 2

2

2 2 2 2

13

1

1 1 1

1

1 3

25

17 8 6

4

REMARK

PVC PVC PVC

ABS ABS

ABS ACRYL

ABS

cool ro ll bao r d

SONY optics head，RongXinDa plank

carbon wires carbon wires

ABS

1mm electrolyte board

ABS

sponge

ABS

sponge

ABS

KST-MV114MA1-B0

electrolyte board

HuaJie company

power cord and back board

LianDong company(pin) HengZhiQian（lines）

motherboard/back surface control board，back port

decode board、output board、core/motherboard

uuper cover/motherboard surface

、m otherboard

feet/motherboard

9

PACKING AND ACCESSORY

1.Decompose diagram

3

5

6

4

2

1

2.MATERIAL LIST

NO.

1

2

3

4 5

Serial No.

O6-010121-00

O7-010120-L0

O1-500600-10 A1-010120-10

O7-010120-R0

Appellation and Specification white box

sparkling glue(left) mainframe bage 500*600mm remote control sparking glue（right）

QTY

1

1 1

10

DISASSEMBLE AND ASSEMBLE

fr The unit comprises mechanical and electric part,including:

ont panel,base panel,top panel,bck panel and loader,AV

tput board,decode board,etc.

ou

Take out disc by truble unit

If you cannot take out disc even press OPEN/CLOSE button,please pull power cord from the socket and follow as below:

1.Wring 8 screws out then pull left and right side to take away top panel that rear part is upper (Diagram A)

Diagram A Dipart cabinet

White Gear

Diagram C Rotate white gear

2.Wring 3 screws out connected base panel with bottom board then wrest 4 screws connected loader with bottom board(Diagram B)

Diagram B Panel,core disassemble

3.Take out front panel and loader carefully,There is a white plastic gear under the loader,Rotate the rear as diagram C to stretch DVD tray and door(diagram D),you can take disc out carefully.

Diagram D Take out disc

PCB positio n

Per PCB assemblies locate as(see Diagram H)

AV output board

front control board

decode board

Diagram H Boards Location

11

Disassemble and assemble parts of the unit

1. Take down top panel see as illustrate A

2.Take dow n front panel

C an open the tray by electricity

1. Operate after completely take out top panel

2. P re s s OP E N/C L OSE bu tto n to op e n disc tray . Be careful not to damage disc when take it out if it is in the tray . Then take away DVD door (as illustrated E)

Catch

Graph E Catch position on the front panel

Can not open tray by electricity

Unable to open disc tray when press OPEN/CLOSE button

1. T a k e d o w n d is c a s illu s trated A ,B ,C ,D

2. Take dow n D VD front panel

12