Akai PR-A06 Manuel utilisateur
S0M-VvVd
90V-dd
STEREO
PRE-AMPLIFIER
mope.t
PR-AQ6
DC
STEREO
POWER
AMPLIFIER
~
|
:
movi.
PA=WO6
TABLE
OF
CONTENTS
SECTION
1
MODEL
PR-AO6........
SECTION
2
MODEL
PA-W06........
SECTION
3
PARTS
LIST...........
SECTION
4
SCHEMATIC
DIAGRAM
.
PR-AO6
PA-WO06
SECTION
1
STEREO
PRE-AMPLIFIER
MODEL
PR-A06
ALSO
APPLICABLE
TO
BLACK
PANEL
MODEL
TABLE
OF
CONTENTS
I
=
TECHNICAL
DATA...
1.
oe
cee
ee
eet
tenes
4
Il.
DISMANTLING
OF
UNIT
.....
0...
0.
ccc
eee
eee
eee
5
I.
CONTROLS
.............
pad
seca
Cater
alone
eis
rierer
sia,
55
Beara
sees
a
ye
ake aie
6
IV.
PRINCIPAL
PARTS
LOCATION
.......
0.0...
eee
ec
eens
7
V.
VOLTAGE
CONVERSION
........
0...
cee
etree
8
VIL
-ADJUSTMENTD
2:
a6
shoe
beeen
aE
sna
Bb
sce
ge
6
Ga
Me
braves
RS
ee ws
9
Vil.
CLASSIFICATION
OF
VARIOUS
P.C
BOARDS
.................06.
10
1.
P.C
BOARD
TITLES
AND
IDENTIFICATION
NUMBERS...........
10
2.
COMPOSITION
OF
VARIOUS
P.C
BOARDS
.................-.-.
11
For
basic
adjustments,
measuring
methods,
and
operating
principles,
refer
to
GENERAL
TECHNICAL
MANUAL.
lI.
TECHNICAL
DATA
ee
A
ne
INPUT
SENSITIVITY/IMPEDANCE/SIGNAL
TO
NOISE
RATIO
(IHF
“A”)
PHONO
1
PHONO
2
TUNER
AUX
TAPE
PLAY
1/2
OUTPUT
LEVEL/IMPEDANCE
TAPE
REC
1/2
OUTPUT
RATED
LOAD
IMPEDANCE
PHONO
MAX.
INPUT
LEVEL
(1
kHz)
PHONO
1/2
FREQUENCY
RESPONSE
TUNER/AUX/TAPE
PLAY
1/2
PHONO
1/2
(RIAA
curve
deviation)
TOTAL
HARMONIC
DISTORTION
(20
Hz
to
20
kHz)
TUNER/AUX/TAPE
PLAY
1/2
(Volume
Max.)
PHONO
1/2
(Volume
Max.)
TONE
CONTROL
BASS
TREBLE
SUBSONIC
FILTER
CHANNEL
SEPARATION
(AUX)
SEMICONDUCTORS
POWER
REQUIREMENTS
POWER
CONSUMPTION
DIMENSIONS
WEIGHT
MM:
3
mV/33
k,
47k,
100
kohms/82
dB
MC:
0.08
mV/10
ohms/75
dB
MM:
3
mV/47
kohms/82
dB
150
mV/47
kohms/102
dB
150
mV/47
kohms/102
dB
150
mV/47
kohms/102
dB
150
mV/600
ohms
1
V/600
ohms
47
kohms
400
mV
(MM)
5
Hz
to
100
kHz
+
0.5
dB
30
Hz
to
15
kHz
+
0.2
dB
0.005%
at
output
10
V
0.005%
at
output
10
V
+8
dB
at
100
Hz
+8
dB
at
10
kHz
12
dB/oct.
at
18
Hz
70
dB
(shorted
circuit)
Transistors
29,
Diodes
48,
FETs
2,
ICs
11
120
V,
60
Hz
for
USA
and
Canada
220
V,
50
Hz
for
Europe
except
UK
240
V,
50
Hz
for
UK
and
Australia
110/220/240
V,
50/60
Hz
internally
switchable
for
other
countries
U/T,
AAL,
CSA
Models:
20
W
440
(W)
x
78
(H)
x
313
(D)
mm
(17.3
x
3.1
x
12.3
inches)
6.3
kg
(13.9
Ibs)
*
For
improvement
purposes,
specifications
and
design
are
subject
to
change
without
notice.
I.
DISMANTLING
OF
UNIT
In
case
of
trouble,
etc.
necessitating
dismantling,
please
dismantle
in
the
order
shown
in
the
photographs.
Reassemble
in
reverse
order.
:
—me
1HU...
8
SS
eC
ss
x
35
eo
SCREWS
SCREWS
Sap
aa
SCREWS
FRONT
PANEL
UPPER
COVER
ON
AARWN
3
CONTROLS
POWER
SWITCH
BASS
CONTROL
TREBLE
CONTROL
FILTER
SWITCHES
MODE
SELECTOR
.
LOUDNESS
SWITCH
AND
!NDICATOR
LED
dB
VOLUME
INDICATOR
VOLUME
CONTROL
REMOTE
CONTROL
INDICATOR
INPUT
SELECTOR
INDICATOR
INPUT
SELECTOR
PHONO
SELECTOR
REC
(Recording)
SELECTOR
STEREO
BALANCE
CONTROL
15.
17.
18.
20.
21.
22.
23.
24.
25.
26.
27.
S2FUAL
NUMBER
Aa
EL
COU.
RL
am
‘SHOCK
AATARE
-
8D
NOT
EFER/
RISOBE
BE
CROC
-
HE
PAS
CMREVER
SERURAORSSEEFARR-—“HICST
GFFMEN
/
CARTIBW:
in
coe
of
use
ourside
of
indicated
service
power
source
arse,
conmét’our
Shop
for
necessary
conversion.
200W
MAX.
Tova,
TOOW
MAX
Ac
110-2400
80/60Hz
20W
Fig.
1
Controls
CAPACITANCE
CONTROL
GROUND
TERMINALS
TUNER
JACKS
AUX
JACKS
TAPE
1
SYSTEM
REC/PLAY
JACKS
REMOTE
CONTROL
JACK
TAPE
2
SYSTEM
REC/PLAY
JACKS
OUTPUT
JACKS
AC
OUTLETS
(Some
models
are
not
equipped
with
this
facility.]
AC
CORD
(Some
models
are
equipped
with
an
AC
Inlet
instead
of
an
AC
cord.
Connect
with
an
appropriate
power
cord.)
TAPE
1
SYSTEM
DIN
JACK
(Some
models
do
not
have
this
facility’-)
PHONO
2
INPUT
JACKS
PHONO
1
INPUT
JACKS
IV.
PRINCIPAL
PARTS
LOCATION
MODE
SWITCH
Swi
TREBLE
CONTROL
LED
PC
BOARD(A)
VRI
PRA-6O00IC
SUBSONIC
HIGH
VOLUME
DOWN
SWITCH
Ssw3
sw4
SWITCH
P,C
BOARD
Sw2
PRA-6025
FILTER
BASS
CONTROL
SWITCHES
LOUDNESS
VOLUME
UP
VR2
SWITCH
SWITCH
sw2
swt
R
FUSE
POWER
PRE
AMP
P.C
BOARD
TRANSFORMER
P.C
BOARD
PRA-6022(U/T)
T90I
PRA-6001A
POWER
SWITCH
Sws0i
eecticeaialiny
{
Scie
TONE
CONTROL
P.C
BOARD
PRA-4002A
LED
VOLUME
INDICATOR
DSO
REMOTE
LAMP
P.C
BOARD
PRA-6026
FETYETIVTVIFITTTY,
VOLUME
BLOCK
(VR2-ito5,SW4-1,2)
REC
SELECTOR
SWITCH
sw3
swi
LED
P.C
BOARD(B)
PRA-4002B
PHONO
SELECTOR
SWITCH
Swi
INPUT
SELECTOR
SWITCH
Fig.
2
Front
View
INPUT
SELECTOR
P.C
BOARD
PRA-6001B
Fig.3
Top
View
V.
VOLTAGE
CONVERSION
SCREW
A
POWER
SWITCH
oce
\
REAR
Fig.4
Voltage
Conversion
(U/T
Model)
1.
U/T
MODEL
(Refer
to
Fig.
4)
1.
Switch
off
the
power
supply
and
remove
the
plug
from
the
mains
supply.
2.
Loosen
holding
screws
and
remove
the
top
panel.
3.
Remove
the
screw
holding
the
Fuse
P.C
Board
located
near
the
power
transformer.
4.
Remove
existing
Line
Voltage
Fuse
and
insert
required
Line
Voltage
Fuse
in
the
proper
fuse
holder.
110V
:
800mA
250V
220V
:
400
mA
250V
240V
:
400
mV
250V
2.
MODEL
OTHER
THAN
U/T
No
voltage
conversion.
Scere
enn
sneererverevaiienreeeset
8
Vi.
ADJUSTMENT
DC
CENTER
OFF-SET
VOLTMETER
VOLTAGE
aa
PRE
AMP
P,C
BOARD
PRA-600IA
Fig.
5
Pre
Amp
P.C
Board/Instrument
Connection
CENTER
OFF-SET
VOLTAGE
ADJUSTMENT
(Refer
to
Fig.
5)
Connect
the
Digital
Voltmeter
or
DC
Voltmeter
between
the
test
points
on
the
Pre
Amp
P.C
Board
PRA-6001A
and
the
ground.
Adjust
VR1
(L-ch),
VR1b
(R-ch)
|
kB,
so
that
the
volt-
meter
reads
0
+
0.5V.
Vi.
CLASSIFICATION
OF
VARIOUS
P.C
BOARDS
1.
P.C
BOARD
TITLES
AND
IDENTIFICATION
NUMBERS
P.C
Board
Title
PC
Board
Number
Pre
Amp
P.C
Board
PRA-001A
Input
Selector
P.C
Board
LED
P.C
Board
(A)
Fuse
P.C
Board
(E)
(CSA,
AAL)
Switch
P.C
Board
PRA6025
Tone
Control
P.C
Board
PRA-4002A
LED
P.C
Board
(B)
Balance
P.C
Board
PRA-4042
Chart-1
10
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