Service Manuals, User Guides, Schematic Diagrams or docs for : Akai AS AS-R8025SSP AS-R8025SSP
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Model:
ASR8025SSP
SERVICE MANUAL
www.akai.ru
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General safety instructions Contents
To avoid the risk of an electronic shock, you should Cover------------------------------------ ----P1
not expose the device to rain or moisture. Consequently, General safety instruction--------------P2
do not use the device in the immediate vicinity of water, Exploded view of the Subwoofer----- P3
for example near a bath tub, a swimming pool or in a Exploded view of the satellite---------P4
damp cellar. Schematic diagram-----------------------P5
Use the device only for the intended purpose. Drawing of PCB board-------------P6--P9
only connect the device at a properly installed plug so- Part list--------------------------------------P10
cket. Pay attention that the specified voltage corres- Familiar malfunction analysis---------P11
ponds to the voltage of plug socket.
when using external mains supply, pay attention to the
correct polarity and voltage. Always place the batteries Specification Data:
in the correct direction. RMS output:110W(35W+15W*5)
Assemble the device in such a way that the available Speaker Unit:
ventilation openings are not covered. subwoofer: 5.25"
Never open the housing of the device. Incorrect rep satellite: 3"*5
airs can consitute a considerable risk of the user. Distortion: 0.3% 1W 1KHz
Should the device become damaged, in particular the Frequency Response: 30Hz-20KHz
mains supply cable, do not operate the device any S/N Ratio: >=60dB
longer, but rather have it repaired by an expert. Seperation: >=45dB
Check the mains supply cable regularly for damage.
For safety reasons a broken or damaged mains lead
may only be replaced by an equivlent lead from the
manufacturer, our customer service department or
a similary qualified person.
These symbols may be found on the unit and are in
tended to indicate the following:
the lightning symbol should advise the user
of parts in the inside of the device which
carry dangerously high voltage level.
the symbol with an exclamation mark should
advise the user of important operation or
maintance instructions in the accompanying
documentation.
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EXPLODED VIEWS OF THE SUBWOOFER
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EXPLODED VIEW OF THE SATELLITE
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1 2 3 4 5 6 7 8
D D
C1
C101 2.2U C23
IC3A 100P VFD_POWER&AI
IC5 TDA2030A(1006)
IC3B 104 FR VOL CON101
R13 R6 R24
1
2
3
4
5
10K 10K R22 1k C31
C5 22K 224
104 R7 C9 R25 18K
4558
47K R11 C30 R26 2.2
C4 4558
47U/25V
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2.2U 10K 22P R423
2.2U C28
C4 101 1K R422
R21 2.2
1K SW SPEAKER DZ102
C2 2.2U IC1 IC4 C37
C201 2.2U DZ103 IN5399
C418
TDA2030A(1006) TDA2030A(1006) 100P IC7 TDA2030A(1006) R IN4148
C419
FL VOL
R13 R14 R35
R2 220/uF35V
1K C7 C19 22K R28 1k C42
R17 1uF/50V
FRONT
22K 224 224 R15 22K 224
1K R33 18K L
C C3 R5 18K 18K +28V R424 C
C17 C40 R37 2.2
4.7U/25V R9 R20
R8 4.7U/25V 47U/25V 10K
2.2 2.2 C39 22P
22K R205
R +28V
100k
11
VFD
R15 C44 3 AC6V
22K C301 2.2U
7 1 100P IC9 TDA2030A(1006) 1
SURROUND
R L
6 2 SR VOL 2
R16 5 3 R42
4
22K 4 4 R38 1k C49 R204 1
FRONT
L 3 5 22K 224 5.6K 2
R41 18K +28V
2 6 3
3 C48 R43 2.2
CENTER
1 7 5 4
47U/25V 7 5
IN IN C47 22P 6 6
R 7
R203 8
C401 2.2U C50 2.7K 10 9
100P IC10 TDA2030A(1006) 8 10
L
SURROUND
SL VOL 9
AC6V
R47
R45 1k C58 R202
22K 224 1K 12
R46 18K
14
CENTER
C57 R50 2.2 13
47U/25V
C52 22P R201
B SW1 B
330 U102
SW 6DPDT LM324
C501 2.2U C63
SUBWOOFER
100P IC11 TDA2030A(1006)
CEN VOL
R54
R51 1k C66
C55 C43 C21 C12 22K 224
R53 18K
4700U/25V 104 22U/50V R1 220 100U/16V C65 R55 2.2
T 1AL 250V 47U/25V
D6 D2 C62 22P
PLUG POWER SW3
D5 IC 4558
D4
AC230V 50HZ 103M/250AC 2A C2
R3 220
T1 100U/16V
12.5V*2 2.7A IN5404*4 C64 C8 IC TDA2030A(1006)
4700U/25V 104
A A
Title
AKAI
Size Number Revision
AS-R8025/8035SSP Amplifier Schematic Diagram 1.0
Date: 15-Jun-2006 Sheet of 1/1
File: D: \5.1\HCS1100Z.DDB Drawn By:
1 2 3 4 5 6 7 8
DRAWING OF PCB BOARD
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FAMILIAR MALFUNCTION ANALYSIS OF AFTER-SERVICE
Malfunction 1:
P
Suggest
1) Check if power plug is well connected to power.
2) Check if switch is set in "ON"
3) Fuse was melted. (Need checked by professional and replacing)
Malfunction 2:
Pehenomenon: Subwoofer no sound
Suggest resolvent:
1) Check if turned up "master volume", subwoofer "volume"
2) Check if have set to "2.1 input"
3) Check if have input signal that under 200Hz frequency
Malfunction 3:
Pehenomenon: Whole system no sound
Suggest resolvent:
1) Check if input audio frequency cable is well connected.
2) Check if output audio frenquency equipment are working
Malfunction 4:
Pehenomenon: 5.1 Channel output no sound
Suggest resolvent:
1) Check if input cable is well connected to 5.1 channel input RCA
2) Check if "mode" have set to 5.1
Malfunction 5:
Pehenomenon: resonance while power on
Suggest resolvent:
1) Need checked & repaired by professional.
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