DVR-4035-VSMC
SERVICE MANUAL
Model:
DVR4035VSMC
DVD/CD/TUNER/AMPLIFIER
PLAYER
www.akai.ru
DVD/CD/TUNER/AMPLIFIER PLAYER
DV-R4035VSMC
SERVICE MANUAL
Table of contents
Safety information----------------------------3
1． General guide---------------------------3
2． Low zeta potential leaking inspection------3
3． High zeta potential leaking inspection------3
▲ Device avoiding ES (Electric susceptible)
Influence of ESD (Electric Susceptible
Discharge)----3
▲ Electric specification-------------------4
▲ Mechanical diagram---------------- -------8
Mechanical parts list-------------------- 9
▲
Packing and accessories--------------10
▲
Disassemble and assemble-----------11
1． Take out disc from trouble player-------11
2． PCB position------------------------11
▲ Disassemble and assemble parts of the unit----12
1． Can open the tray by electricity---------12
2． Can not open the tray by electricity-----12
3． Assemble the case-------------------------12
▲ Attachment 1------------------------- 13
▲ Block diagram/Circuit diagram--------13
1． Block diagram--------------------------------14
2． Connecting diagram-------------------------15
3． Decoder board diagram---------------------16
4． Amplifier board diagram-------------------21
5． Control Board diagram---------------------24
▲ Attachment 2-------------------------25
▲ PCB diagram
1． Upper decoder board PCB diagram----26
2． Upper decoder board silk screen diagram-------27
3． Lower decoder board PCB diagram-------------28
4． Amplifier board PCB diagram-------------------29
5． Amplifier board silk screen diagram------------30
6． Upper control board PCB diagram -------------31
7． Lower control board PCB diagram------------32
8．Control board silk screen diagrqm--- -----------------------33
▲ Attachment 3------------------------------34
▲ Component list
1． Decoder board component list------------------35
2． Amplifier board component list----------------38
3． Control board component list-------------------41
2
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
Low zeta potential leaking inspection
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
on AC outlet and exposed metallic part with short circuit.
The resistance between screw cap, control shaft should be
unlimited.
1.5KΩ 10W
0.15
uF
AC voltmeter
To device with
exposed metal parts
Electric leakage inspection
Cold water pipe
（connecting to
ground）
Picture1
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
prevent ed static of keenness（ES）setting is exposedto static
of discharge of distortion（ESD）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
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
from the market to eliminate the threate n of static electricity
on human body.
2.Put the electronic parts with ES device on the surface of
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
packings( 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.)
3
Electric Specification
MW electric index Model No.: DVP-0601-1
Test condition:
1. Supply voltage: AC230V 50Hz 2. Standard power output: 1W
3.Speaker impedance: 4Ω（FL、FR、SL、SR），8Ω（C），6Ω(SW)
4.Standard modulating: 400Hz 30%
No.
Test items
Unit Standard Limit error
1 Intermediate frequency KHz 450 +/-3
2 Cover with area KHz 522-1620 +/-5
S/N 20dB，612KHz uV/M 600 3000
S/N 20dB，999KHz uV/M 600 3000
4 Utility delicacy
S/N 20dB，1395KHz uV/M 600 3000
5 S/N ratio（999 KHz，input 5mV/M） dB 40 30
6 Intermediate Frequency restrain rate（612KHz） dB 45 35
7 Mirror restrain rate（1404KHz） dB 35 30
8 Auto plus control（input 100mV/M） dB 30 20
5mV/M input，30％ % 1 3
9
Distortion
degree
100mV/M input，80％ % 3 5
10 -6dB bandwidth（20dB S/N） KHz 8 5-10
11 zip （input 5mV/M，IFx1 IFx2） % 3 10
Vol ume max W
12
Output
power
Distortion degree: 10%，60% modulation
degree，input 5mV/M
W 4.5 3
13 +/-10KHz selectivity （1000KHz 20dB S/N） dB 14 8
14 Frequency respond （-6 dB，input 5mV/M） Hz 40~4K 100~3.15K
15 Modulating AC volume （input 100mV/M） dB 40 35
16 The least noise mV 1 3
17 Sensitivity of station locking dB ≤90
4
FM electric index Model No.: DVP-0601-1
Test condition:
1. Supply voltage: AC230V 50Hz 2. Standard output power: 1W
3. Antenna impedance: 75Ω 4. Standard modulating: 1KHz 22.5KHz
5. Speaker impedance: 4Ω（FL、FR、SL、SR），8Ω（C），6Ω(SW)
No.
Test items Unit Standard Limit Error
1 Intermediate frequency MHz 10.7 +/-0.1
2 Cover with area MHz 87.5-108 +/-0.1
S/N 30dB，90MHz dB 22 26
S/N 30dB，98MHz dB 22 26
3 Utility delicacy
S/N 30dB，106MHz dB 22 26
4 S/N ratio （98MHz，input 1mV） dB 50 34
5 -3dB limit delicacy uV 10 20
6 Intermediate Frequency Restrain Rate（90MHz） dB 50 45
7 Mirror Restrain Rate（106MHz） dB 28 22
8 Distortion degree （1mV input） % 0.6 1.5
9 Modulating AC volume（input 5mV） dB 50 40
10 Auto frequency control range（1mV input，-3dB） KHz
11 AM restrain（1mv input，modulate degree 30%） dB 32 26
12
Power output（distortion degree 10%，60KHz，1mv input）
W 10
13 Frequency response（-3dB） Hz 40~12.5K 100~8K
14 Noise of minimum volume mV 1 3
15 Sensitivity of station locking dB ≤35
16 Passage separating dB 25 ≥20
5
DVD electric index Model No.: DVP-0601-1
1：Video section
No. Test item Test point Performance require Unit Remark
1
Video
1.0±0.2
Vp-p
Y
0.7±0.14
Vp-p
Chroma
0.88±0.176
Vp-p
2 S-Video
C
Color
synchronization
0.3±0.06
Vp-p
3
Y、Cr、Cb/Y、Pr、Pb
0.7+/-0.14
Vp-p
4
outp
ut
rang
e
R、G、B
0.7+/-0.14
Vp-p
5
Horizontal distinguish
≥500 Line
6 Bandwidth (+3/-6dB)
≥5.5
MHz
100KHz 0dB
7 Differential phase DP
≤2
degree
75Ω load
8
Lum Non-Linear Distortion
≤5 %
75Ω load
9 Differential Gain DG
≤2
%
75Ω load
10
Y ≥56
dB
75Ω load
U passage ≥50
dB
75Ω load
11
C
V passage ≥50
dB
75Ω load
R R passage ≥50
dB
75Ω load
G G passage ≥50
dB
75Ω load
12
SNR
B B passage ≥50
dB
75Ω load
2：Audio section (testing signals：TCD-784)
No. Test item
Test point Performance require
Unit Remark
1
Audio output level
1.8+0.2/-0.8 Vrms DVD(LPCM)、CD
2
Amplitude/Frequency response
±2
dB
DVD(LPCM)20Hz~20KHz
3 S/N ratio
≥85
dB
JIS-A (20KHz LPF)
4
Distortion THD
0.02 %
1KHz JIS-A
5 Dynamic range
90
dB
1KHz JIS-A
6 Separate degree
65
dB
1KHz JIS-A
7
Passage imbalance
≤1.5
dB
DVD(LPCM)、CD
8
Coaxial output range
0.5±20%
Vp-p
75Ω±1% load
9
Optical output wavelength (λp)
660±30
nm
3：Other characteristics
No. Test it em Test point
Performance require
Unit Remark
1 Disc reading time
10～20
S
2
Remote control distance
≥5
m
3
Supply voltage input
230V(－10%/＋10%)
50Hz
4
Consume power
110
W
Normal working
5
Storing temperature -20℃～+55℃
6
Image signal system NTSC/PAL
7
Free falling
Suitable for request of GB/T2423.8-1995
8
Disc format
1）DVD Player： 12cm single face，single layer；12cm single face，double layer；8cm single face ,single
layer；8cm single face，double layer；（2）CD disc：12cm disc，8cm disc.
4：Test condition
1. Environment condition: normal temperature, normal voltage.
2. Supply voltage：AC230V 50Hz。
6
Amplifier board electric index Model No.：DVP-0601-1
Test condition
1. Test condition：Normal temperature，Normal voltage
2. Supply voltage：AC230V 50Hz。
7
No. Test item Unit Typical Limit Test condition
Power supply
1 Voltage input V
AC
230±10%
2 Rated output voltage & current +5V 1.3A +5V 1.5A
+12V 150mA +12V 200mA
-12V 50mA -12V 100mA
+22V 3.5A +25V 3.5A
~3.7V 100mA ~3.7V 120mA
-24V 50mA -24V 50mA
3 Output power W 110 Voltage input AC230±10%V
4 +5 wavelength output mV <50
4 Power modulating (+5V point) % 5 Voltage input AC230±10%V
6 Load modulating (+5V point) % 5 Current 10mA-1.5A
7 Standby power W ≤10
Amplifier section
1 Working voltage V +22 +26 Rated load
2 Static current mA 180 300
3 Rated load (FR/FL/SR/SL)
Ω
4
4 Rated load (C/SW)
Ω
8
5
Rated output power (FR/FL/SR/SL)
W 12.5
THD=10% RL=4Ω
6
Maximum output power
(FR/FL/SR/SL)
W ≧16 ≧18
Maximum volume RL=4Ω
7 Rated output power (C) W 15
THD=10% RL=8Ω
8 Maximum output power (C) W ≧20 ≧25
Maximum volume RL=8Ω
9 Rated output power (SW) W 25
THD=10% RL=6Ω
10 Maximum output power (SW) W ≧30 ≧35
Maximum volume RL=6Ω
11
Band distortion (FR/FL/SR/SL/C)
% 0.25 Rated load; PO=1W;f=1KHz
12 Band distortion (SW) % 0.25 Rated load; PO=1W;f=100Hz
13 Channel output mix dB 55
f=1KHz
14 Channel output mix dB 55
f=10KHz
15 S/N dB ＞75 JIS-A
16
Amplitude/Frequency response L/R/C/SL/SR
dB +/-2 +/-3 50Hz~20KHz
17
Amplitude/Frequency response SW
dB +/-2 +/-3 20Hz~200Hz
Audio input, output
1 Circuit level output V
RMS
1.5±20%
2 Circuit S/N rate output dB 90 85
3 Circuit level input V
RMS
1.5±0.5
4 Circuit impedance input Ω 10K±10%
Mechanical diagram
8
3
44
15
11
4
16
12
6
7
9
42
10
14
13
42
5
31
4
3
42
42
1
45
24
45
45
45
27
48
22
32
19
22
48
28
25
45
23
44
34
17
44
24
45
40
44
36
37
38
41
39
43
20
43
47
43
35
23
25
2
45
26
21
46
29
46
44
30
44
44
47
18
47
21
46
21
21
46
47
33
47
43
43
43
8
Front feet
Fix piece for transformer φ65×6.5×1.2mm
Card reader board/mother board
Mother board/rear board,tuner
Amplifier board, decoder board/mother board
unit feet、loader/mother board
Pannel/Mother board
Nickel
Screw ST3×6PTT
Screw ST3×16PTT
Nickel
Screw ST3×12PWTT
Screw ST3×8PWTT
Screw ST3×6PWTT
Screw ST3X8PA
Screw ST3X6KTT
rubber mat φ80× 7.0×1.3mm
rubber mat φ65× 7.0×1.3mm
Nickel
Nickel
Nickel
Nickel
Nickel
Control board
Spring mat φ6.0×2.0mm
mat φ6.0×13×1.0mm
nut M6×4.8mm
bolt H6.0×38.0mm
Transformer 230V/110W/VDE
ALPS tuner TFCF1E800A
Card reader board
Decoder board
Amplifier board
Power switch PS4E-A-040
Pick up CMS-S71SG6
Rear feet mat
Front feet mat
Rear feet
Lens-H
PCB holder（height 11.0mm）
PCB holder（hight 7.0mm）
Top cover holder
Top cover
Back board
Mother board
Lens-I
2
Lens-F
Lens-G
Lens-E
Lens-C
Lens-D
Lens-B
Lens-A
Remark
Function button(down)
Function button(up)
Volume button
Power button
decoration board
Panel(with card reader)
Lens
No.
Material No.
Name
QTY
M
ec
h
an
i
ca
l
par
t
s
li
s
t
9
10
2
Gift box (unit+speaker)
SPP-0301-0 type speaker
Speaker poly foam
Poly foam（right）
Poly foam（left）
Remote control
No.
2.Material list
4
6
5
1
2
3
O7-060160-S2
A3-060120-01
O6-060127-12
Material No.
O7-060120-L0
A1-060120-11
O7-060120-R1
Name
6
4
2
1
1
QTY
1
1
1
4
5
3
1.Disassemble
Packing and accessories
1
11
Graph H PCB boards location
3.Take out front panel and loader carefully, there is one
white plastic gear under the loader.Rotate the gear as
illustrated C to stretch DVD tray and door (illustrated D),
you may take disc out carefully.
Graph B Dispart front panel and loader
front control board
decoder board
Volume zeta board
Graph D Take out disc
All PCB assemblies locate as illustrated H
PCB position
card reader board
Graph A Dispart cabinet
2.Wring 6 screws out connected base panel with bottom
board then wrest 4 screws connected loader with bottom
board (illustrated B)
AV output board
If you can not take out disc even press OPEN/CLOSE
key,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(illustrated
A)
Graph C Rotate white gear
Gear
The unit comprises mechanical and electric part
including:front panel, base panel, top panel,
back panel and loader, AV output board,decoder,etc.
Take out disc from trouble player
Disassemble and assemble
12
Assemble the case by reversing disassembly.
After maintenance,switching on power on the condition
that assembly and connection have no mistake then loader
and electric circuit return to original place automatically.
The unit works normally.
Assemble the case
Unable to open disc tray when press OPEN/CLOSE button
2.1 Take out disc as illustrated A,B,C,D.
2.2 Take out front panel
Unable to open the disc tray by electricity
Graph E Location of catch on front panel
catch
2.1 Operate after completely take out top panel
2.2 Press OPEN/CLOSE button to open disc tray
Be careful not to damage disc when take it out if it is in the tray.
2.3 Press OPEN/CLOSE button to close tray then pull
out power plug.
2.4
Take out PCB board on front panel and cords connected with
other circuit board.Wring out 5 screws connected front panel and
bottom panel,untie two catches on left and right side of the panel
then take out front panel.(See illustrated E)
catch
catch
catch
1.Take out top panel
See as illustrated A
2.Take out front panel
Able to open the disc tray by electricity
Disassemble and assemble parts list
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