Nakamichi PA-304 User manual
service
Manual
Nakamichi
Nakamichi
PA-304
Mobile
Power
Amplifier
CONTENTS
1.
General.........
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2.
Removal
Procedure
........
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AGIMStINONES:
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SR
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We
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varia
wares
ee
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Oe.
de
Parts
Location
for
Adjustment
..
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3
3.
2.
Adjustment:
Procedures
s.(ou-
536
4:4
ee
ee
ee
Sb
Se
WE
oe
See
ie
a
Sea
acme.
Te
4,
Mechanism
Ass’y
and
Parts
List...
1.
ie
we
etre
ee
emer
weer
ee
eee
nner
eee
r
eres
4
4).
ks
SYNTHESIS:
6.5.
bs
Kole
a
Saha
Nae
eS
8
ete
Wier
Seb
s
Gee
Sects
Ak
Se
eee
Bate
e
wa!
BR
OSes
ee
ee
4
,
ae
TR
Block
Assy
B{(AOL)
s45s:60
6s
sd
AS
hoot
S46
w
Ees
ee
ae
ee
er
eee
5
4,
38.
TR
Block
Ass’y
C
(A022)
cn
6
a
aes
ew
ie
ee
Pe
ob
acdc
cll
Si
tey
aha
lah
de
ate
Jeicevtet
Ge
Gee,
where
SP
Site
OO
4,
4,
TR
Block
Ase’'y
A
(A038)
>
sc
6 2
G.n
Ke
aw
eas
oe
eh
SS
Eis
ee:
OO
PSEA
SESS
DERE
OS
5
5.
Mounting
Diagrams
........
Be
de
ee
Bhan
tah
ok
as
Oo
eee
ects
eke
Chote
dn
eh
Bee
aia
ere
a
eee
5
5.
i.
Power
Supply
P:C.BisAs8°Y
acc
45
ein
eS
ae
we
ees
8
ER
eek
Wh
ee
Re
wl
a
ae
ah
Bee
6
5.
82
Main
PC.B.
Ase
9
coe
ccs
tence
bo
oie
od
Cece
doe
Be
PEREGO
RUSS
Se
OSes
Ee
ee
eG
i
5.
8.
—
Fuse
P.C.B.
Ass’y
.........-.
ci
BR
Eta
cee
poh
ee
i
Gehl
a
OR
RS,
oa
eR
eee
ee
arte
Le
Boe
ota
he
7
5.
A.
BT
D:Switch
2:C.B.
Ags
Y
v6
aes
S
He
ee
we
CAAA
WES
SESE
EOS
SOE
LA
ees
7
Gs
.
Witiht
Diagram:
«655
5-5.
GF
6S
RAR
EDGR
OG
OO
EE
RES
GE
OS
a
tale
tenets
tin.
Sa
be
Sale
eee
es
8
7.
‘Sehematic:
Diggrant
ea
soos
ew
hod
Se
SG
Sh
wR
OS WR
ete
as
RSL
SOR
SOR
Sw
ECD
6
ad
oR
ee
9
S..
“BlOCk
DiageaM
"os
holed
kh
oC
OEE
See
ee
ee
SE
CS
AEE
GERM
RA
eae
Sas
poor
Se
10
9.
Specifications
............
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ieed
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Wright
caine
Brig
Garis
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ees
10
1.
GENERAL
1.1.
Notes
on
Order
of
Spare
Parts
|
Note
that
the
Main
P.C.B.
Ass’y
and
Power
Supply
P.C.B.
Ass’y
do
not
include
the
following
parts.
Please
order
the
excluded
parts
together
with
P.C.B,
Ass’y
to
complete
a
set
of
P.C.B.
Ass’y.
‘
PCB.
Ass’
Excluded
Parts
ee
a
|
___PartName
———~s—C~dSséRemarkss
TR
Block
Ass’y
A......
.
|
Ref.
No.
15
in
Fig.
4.1.
(BAO7656A)
Consists
of
transistors
|
and
heat
sink.
TR
Block
Ass’y
B.....
<:
.
|
Ref,
No.
10
in
Fig.
4.1.
(BAO7657A)
|
Consists
of
transistors
and
heat
sink.
Ref,
No,
12
in
Fig.
4.1.
Consists
of
diodes
and
heat
sink,
,
Ref.
No,
23
in
Fig.
4.1.
(T401)
Ref,
No.
24
in
Fig.
4.1.
(L401)
Main
P.C.B.
Ass’y
(BA07652A)
Power
Supply
P.C.B.
Ass’y
(BA07653A)
®
TR
Block
Ass’yC
......
1
pee.
(BAO7658A)
@
Converter
Transformer
..
1
pce.
(0B50158A)
®
Choke
Coil
..........
1
pee.
(OB51314A)
|
1.2.
Destination
@
U.S.A.
and
Canada
@
Other
@
Europe
®
Japan
1.3.
Package
Ass’y
|
1.4.
Accessory
Ass’y
Q*ty
Package
Ass’y
Packing
(U.S.A./Other/Europe)
Packing
(Japan)
Poly-Bag
(300x400x
0.08)
Outer
Carton
(U.S.A.)
Outer
Carton
(Other/Europe)
Outer
Carton
(Japan)
Inner
Carton
(U.S.A.)
Inner
Carton
(Other/Europe)
Inner
Carton
(Japan)
OF
04250B
OF04260B
OF
04249B
OF04268A
OF04329A
OF04269A
OF04251B
OF04328A
OF04261A
Accessory
Ass’y
Screwdriver
Screw
Ass’y
Mounting
Plate
A
Mounting
Plate
B
Poly-Bag
(320x340x0.08)
Poly-Bag
(80x100x0.05)
Owner’s
Manual
(English/
German/French)
Owner’s
Manual
(Japanese)
Important
Notice
0D03903C
DA04253A
OHO5572A
OHO5589A
0D03092B
0D04593A
0D04969A
0D04970A
0D04810A
fhe
ee
ee
et
OD
2.
REMOVAL
PROCEDURE
2.1.
Fuse
.
Pull
out
FO1
(Fuse
30
A)
toward
you.
(FO1
(Fuse
30
A)
1s
hard
to
remove.)
.
Fig,
2
Rear
View
3.
ADJUSTMENTS
3.1.
Parts
Location
for
Adjustment
Power
Supply
P
C.B.
Main
P
C.
B.
bee
ee
eh
VR22L
meee
aS
(Bottom
View)
3.2.
Adjustment
Procedures
Note:
Perform
adjustment
from
the
bottom
of
the
PA-304,
3.2.1,
Power
Supply
Output
Voltage
(Power
Supply
P.C.B.
Ass’y)
(4)
(2)
(3)
Connect
a
DC
voltmeter
across
C413.
Supply
14.4
VDC
to
+14.4
V
Terminal
and
Remote
Terminal
of
the
PA-304,
Adjust
VR401
to
obtain
+24.0
V
on
the
DC
voltmeter,
Fig.
3
3.2.2.
Idling
Current
(Main
P.C.B.
Ass’y)
(1)
(2)
(3)
(4)
(5)
(6)
Insert
shorting
pins
into
Input
Pin
Jacks.
Connect
a
DC
millivoltmeter
across
R135L
(R1
35R).
Adjust
VR12L
(VR12R)
to
obtain
6
mV
(approx.
27
mA)
on
the
DC
millivoltmeter.
Connect
a
DC
millivoltmeter
across
R235L
(R235R).
Adjust
VR22L
(VR22R)
to
obtain
6
mV
(approx.
27
mA)
on
the
DC
millivoltmeter.
Remove
the
shoring
pins,
4.
MECHANISM
ASS’Y
AND
PARTS
LIST
4.1.
Synthesis
TR
Block
Assy
C
12
{A02)
Terminal
4P
(Gold)
(Other/Europe/|
2
Japan)
(TM101,
TM201)
Pin
Jack
2P
(Gold)
(PJ101,
PJ201)
Bottom
Sheet
A>
Bottom
Cover
A
Bottom
Sheet
B
Bottom
Cover
B
Converter
Transformer
(T401
on
Power
Supply
P.C.B.
Ass’y)
Choke
Coil
(L401
on
Power
Supply
P.C.B.
Ass’y)
Insu-Lock
BT2x8
@
Binding
(Black
Chromate)
BT3x8
&
Binding
(Black
Chromate)
BT3Sx5
©
Binding
BYT3x8
®
Binding
BT8x6
®
Binding
(Black
chromate)
Washer
3.4x7x0.5
Fiber
Washer
8x3.1x0.5T
Washer
3mm
Toothed
Lock
Earth
Lug
B-4
OB84153A
Synthesis
OB81630A
OJO5923A
OH05575A
0J05924A
OHO5576A
OB50158A
0B51314A
OBO851i5A
OE00974A
OE00921A
QOEO3013A
OEO0868A
OEOO860A
OJ05057A
OJO6007A
OE00172A
OEOOL7T4A
OHO5571A
BAO7655A
0B90403A
OHO5573A
HAO5715A
0J05919B
OJO5966A
BAO7654A
0E03145A
BAO7657A
BAO7653A*
BAO7658A
OB84106A
-
OB84152A
0B19013A
BAO7656A
BAO7652A*
OB84107A
Heat
Sink
B317
Fuse
P.C.B.
Ass’y
Fuse
30A
Side
Chassis
A
Transformer
Cover
Ass’y
Center
Chassis
Free
Bushing
BTL
Switch
P.C.B.
Ass’y
Clip
CS-9
TR
Block
Ass’y
B
Power
Supply
P.C.B.
Ass’y
TR
Block
Ass’y
C
Terminal
3P
(U.S.A.)
(TM401)
Terminal
3P
(Gold)
(Other/Europe/
Japan)
(TM401)
Thermistor
PTH487
AO1BE471
(TH401)
TR
Block
Ass’y
A
Main
P.C.B.
Ass’y
Terminal
4P
(U.S.A.)
(TM101,
TM201)
Dat
HE
HH
ee
bP
1
©
DED
Bo
Mee
eR
eR
ee
*:
See
item
1.1.
4,2.
TR
Block
Ass’y
B
(A01)
4.4,
TR
Block
Ass*’y
A
(A03)
LOI
Fig.
4.2
Fig,
4.4
4.2.
TR
Block
Ass’y
B
(A01)
4,3.
TR
Block
Ass’y
C
(A02)
BAO7657A
|
TR
Block
Ass’y
B
0B10315A
|
TR
28D1445A
(Q401-Q408)
0J05946A
|
Transistor
Sheet
B
0J05921A
|
Heat
Sink
B
0F03319A
|
M3x8
@
Binding
BAO7658A
TR
Block
Ass’y
C
OB12612A
OB12611A
|
OJO5947A
OJO5922A
QOEO3319A
FMU-32R
(D405)
FMU-32S
(D404)
Transistor
Sheet
C
Heat
Sink
C
|
M3x8
©
Binding
Fig.
4.3
BAO7656A
TR
Block
Ass’y
A
TR
28C3421
(Q104L,R
or
Q204L,R)
TR
28C4467
(Q110L,R
or
Q210L,
R)
TR
2S8SA1694
(Q111L,R
or
Q211L,R)
Transistor
Sheet
A
Heat
Sink
A
M3x8
©
Binding
0B10199A
0B10312A
0B10313A
OJOS945A
0J05920A
0E03319A
5.
MOUNTING
DIAGRAMS
Notes:
1.
Mounting
diagram
shows
a
dip
side
view
of
the
printed
circuit
board,
2.
Diode
is
18853,
181555,
or
188176
unless
otherwise
specified.
3.
Following
transistors
are
interchangeable
with
each
other,
a.
28A733,
2SA608SP,
2SA1048,
2SA1175
b.
28C945,
2SC536SP,
28C2458,
28C2785
4,
Abbreviation
for
part
name:
TR
—
Transistor,
SiD
—
Silicon
Diode,
ZD
—
Zener
Diode
RK
—
Carbon
Resistor,
RM
—
Metal
Film
Resistor,
RF
—
Fail
Safe
Type
Resistor
,
RC
—
Cement
Resistor
CE
—
Electrolytic
Capacitor,
CML
—
Mylar
Capacitor,
CC
—
Ceramic
Capacitor,
CPP
—
PP
Capacitor,
CMM
—
Metalized
Mylar
Capacitor,
CSP
—
Polystyrene
Capacitor,
C
—
Mica
Capacitor
5.1.
Power
Supply
P:C.B.
Ass’y
Fig.
5.1
5.1.
Power
Supply
P.C.B.
Ass’y
OBOS665A
330
1/6wW
J
C402,403
0B41917A
CC
0.10u
50V
Z
OB01680A
RK
820
1/4W
J
C404
0B41084A
|CML
1500P
50V
J
BAO7653A
|
Power
Supply
OBO9665A
|RK
330
1/6WJ
C405
©
OB09854A
|
CML
6800P
50V
J
(Note)
P.C.B.
Ass’y
OBO9677A
{RK
1.0K
1/6W
J
C406,407
OB40615A
|CE
3300u
16V
OBO9699A
|RK
8.2K
1/6W
J
C408
OB40079A
|CE
220u
16V
OB60712A
|
Power
Supply
RK
22K
1/6WJ
C409
OB40617A
|CE
180yu
50V
Cy
RK
6.8K
1/6W
J
C410
OB40636A
{CE
330u
63V
U401
OBO06427A
[IC
uPC494C
OBO9701A
|RK
10K
1/6WJd
C411,412
0B41082A
|
CML
1000P
50V
J
Q409
OB06452A
|TR
2SD1406
OBO9669A
|RK
470
1/6WJ
C413,414
OB40616A
|CE
1800u
35V
OBO6451A
|TR
2SB1015
OBO9701A
|RK
10K
1/6WJ
C417
OB40206A
|CE
100u
16V
OB10046A
|TR
2SD1347
OBO9G97TA
|RK
6.8K
1/6WJ
|C418,419
|O0B40077A
|CE
474
16V
OBO6013A
|TR
2SA733
(P,Q)
OBO9677A
|RK
1.0K
1/6WJ
C420
0B40206A
|CE
100u
16V
Q414,415
OBO6100A
|TR
2S8C945
OB09721A
|RK
68K
1/6WJd
C421
0B40113A
|CE
2.2u
50V
(K,P,Q)
OBO9685A
|RK
2.2K
1/6WJI
|C422
OB40077A
|CE
47
16V
Q416
OBOG100A
|TR
2SC945
OBO9689A
|RK
3.3K
1/6WJ
|C423
0B41917A
|CC
0.10u
50V
Z
(K,P,Q)
OBO9701A
|RK
10K
1/6WJ
0B40052A
|CE
470u
6.3V
Q417
OBOGO13A
|TR
2SA733
(P,
Q)
OBO9693A
|RK
4.7K
1/6W
J
0OB41298A
|
CML
0.10u
50V
J
Q418,419
OBO6G100A
|TR
2S8C945
~~
.
OBO09725A
|RK
100K
1/6W
J
0B41082A
|CML
1000P
50V
J
(K,P,Q)
OBO9709A
|RK
22K
1/6WJ
OBO9860A
|
CML
0.022y
50V
J
Q420,421
OBO6100A
|TR
2SC945
OBO9677A
|RK
1.0K
1/6W
J
OB41088A
|
CML
3300P
50V
J
~
|(K,P,Q)
OBOS9709A
|RK
22K
1/6WJd
0B41082A
|CML
1000P
50V
J
Q422
OBOGIOOA
|TR
2S8SC945
OBO9689A
|RK
3.3K
1/6WJ
0B41298A
|
CML
0.1y
50V
J
1
(K,P,Q)
OBO9709A
|RK
22K
1/6WJ
OB83748A
|
Ribbon
Cable
7P.
Q423
OBO6013A
|TR
2SA733
(P,Q)
OBO9701A
iRK
10K
1/6WJd
210mm
Q424
OB10058A
|TR
DTA114ES
OBO9694A
|RK
5.1K
1/6W
J
OB83749A
|
Ribbon
Cable
2P
ZD401
0B12144A
|
ZD
4.7V
RD4.7JSB2
OBO9701A
;RK
10K
1/6WJ
250mm
ZD402
OB12186A
|ZD18V
RD18JSB2 OBO9733A
|RK
220K
1/6W
J
OB83750A
|
Ribbon
Cable
2P
ZD403
OB12623A
|ZD11V
RD11ESB2
OBO9677A
{RK
1.0K
1/6W
J
310mm
“|ZD404,405
|0B12204A
|ZD
33V
RD33JSB2
OBO9685A
|RK
2.2K
1/6W
J
0B83752A
|
Ribbon
Cable
2P
ZD406
OB12623A
|ZD11V
RD11ESB2_
OBO9701A
|RK
10K
1/6WJ
400mm
D401,402
OBO6458A
|SiD
30D-2
OBO9669A
|RK
470
1/6W
J
0B83753A
|
Ribbon
Cable
2P
D403
OB12418A
|SiD
UB-151
OBO9701A
|RK
10K
1/6WJ
460mm
D406
OB12665A
|SiD
RU4YX
OBO9700A
|RK
9.1K
1/6WJ
OB83751A
|
Ribbon
Cable
2P
»1D407,408
OBO6398A
|SiD
1SS176
OBO9741A
|RK
470K
1/6W
J
. .
370mm
T402
0B50159A
|
Drive
Transformer
OBO9693A
|RK
4.7K
1/6W
J
OB83753A
|
Ribbon
Cable
2P
(EI19)
0B24231A
|RF
100
i1WJ
460mm
0B51313A
|Choke
Coil
OBO9629A
|iRK
10
1/6W
J
OB80237A
|
Wire
RED
130mm(1)
0OB32080A
|Semi
VR
10K
(B)
OB24231A
|RF
100
i1WdJ
OB80238A
|
Wire
BLK
130mm(1)
OB24170A
|RF
0.47
1WJ
0B24122A
iRF
10
2W
J
OEO00868A
|
BT3x8
©
Binding
(4)
OB24170A
{RF
0.47
1WJ
OB24232A
|RF
820
1WJ
OJOG007A_
|
Washer
8x3.1x0.5T
OB24170A
|RF
0.47
1WdJ
|OBO9625A
|RK
6.8
1/6W
J
(Fiber)
(1)
OB24170A
|RF
0.47
1WJ
OBO9677A
|RK
1.0K
1/6WJ
OB24230A
|RF
6.8
iw
Jd
OBO9753A
|RK
4.7
1/4W
J
OBO9673A
680
1/6WJ
0B41822A
[CML
0.47
50V
J
Note:
TR
Block
Ass’y
B,
TR
Block
Ass’y
C,
T401,
and
L401
are
not
included
in
the
Power
Supply
P.C.B.
Ass’y.
(See
item
1.1.)
6
5,2.
Main
P.C.B.
Ass’y
ESTER
hy,
ay
ON.
WX
AS
XS
,
a
Ny
SSS
&
SS
s
WGN
NN
SSSR
SEASONS
ED
1
IE
RII
OAS
&
aN
Ny
BS
SS
ww
:
ag
SS
“fe
ee
isiores
es
a
rT
“
:
Yy
Lip,
‘er
6
|
SSS
TTI
Ys
LETTE
Loop
rrerayosssssucrs
Dy
pperpeores
li
a
pep RUB
N
RLTAIRCA
SOS
LI
IRDA
TART
LOOPS
ERECT
LOM
MLM
MOE
URU
SINE
PKSDLERALDNGSLOOULS
EOLA
PASM
ROE
LILLE
ACUI
CTY
ORTUTEO
GALE
LESTE
LL
ILELEDO
EAE
Hits
CC
——
LOLILE
LED
LITLE
LEO
v
—
mewn
er
SAI
SN
SAH
AHAOASSS
SABINA
RREGOP
SSE
S
a
SARA,
SSSI
owe
ty
Mii
SNS
NAN
SAGAN
NN
AS
ARG
ERAN
Ss
W
SSSA
ARE
EB
ss
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J
oa
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raised
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SOLAN
THOSE
LEAL
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UES
ARES
:
nessa
8
:
ONE
EESESEESE
SENSEI
SCARIEST
TE
SESS
SORT
ISLES
5.3,
Fuse
P.C.B.
Ass’y
5.4.
BTL
Switch
P.C.B.
Ass’y
edie
i
Seat
iee
one
teatha
eleabdenn
creatine
aes
he
a
ah
eat
i
ge
a
ee
mci
Spm
oe
a
rans
gem
aoe
et
MR
Sr
ta
Pe
6.
WIRING
DIAGRAM
Note:
Two
pes.
of
TR
Block
Ass’y
A
are
not
included
in
the
Main
P.C.B,
Ass’y.
(See
item
1.1.)
5,2,
Main
P.C.B.
Ass’y
R131L,R
0B01933A
220
1/4wJ
|C126L,R
|
0B41294A
|
CML
0,047y
50V
J
R132L,R
0B01933A
BE
220
1/4wJg
{C127
0B41298A
|
CML
0.1p
50V
J
BA07652A
|Main
P.C.B.
Ass’y
R133L,.R
OBO5695A
|RK
1.0
1/4WJ
|
C128
OB09880A
|
CML
ip
50V
J
7
(Note)
R134L,R
OBO5695A
|
RK
1.0
1/4wJ
|C129
OB40075A
|
CE
22u
16V
12
14.
13
R135L,R
0B24226A
|RC
0.22
5W
C130
0B40639A
|
CE
470u
35V
(LN)
OB60711A_
|Main
P.C.B.
R136L,R
0B24226A
|RC
0.22
5W
C131
OB40637A
|CE
220y
35V
(LN)
0B11713A
{IC
muPC4570C
R137L,R
OB09713A
|RK
33K
1/6WJ
|C132L,R
0B41291A
|
CML
0.027p
50V
J
rs
0B11713A
|IC
pmPC4570C
R138L,R
OBO9709A
|RK
22K
1/6WJ
|C201L,R
OB09249A
;C
3838P
50V
J
Eos
0B10125A
|TR
2SC2259
R139L,R
0B20093A
|RK
1.5M
1/6wWJ
|C202L,R
0B09322A
|
CPP
330P
100V
J
SISIVIs)
(F,G,H)
R140L,R
0B09743A
|RK
560K
1/6wWJ
|
C203L,R
0B09933A
|
CE
2.2u
50V
(LN)
OB06142A
|TR
2SC2240
(BL)
|R141L,R
OB09701A
|RK
10K
1/6WJ
|C204L,R
0B41119A
|
CPP
560P
100V
G
0B10050A
|TR
2SA970(BL)
|R142L,R
0B24229A
|RF
3.3
1WJ
C205L,R
0B05653A
|
CML
1500P
50V
J
0B06142A
|TR
2SC2240
(BL)
|R143L,R
0B24095A
|RF
4.7
1WJd
C206L,R
OB09249A
|C
33P
50V
J
0B06142A
|TR
2SC2240
(BL)
|R144L,R
OB09737A
|RK
330K
1/6wJ
|
C207L,R
OB09242A
|C
47P
50V
J
OB10050A
|TR
2SA970
(BL)
OB09647A
|
RK
56
1/6w
J
|
C208L,R
0B40027A
|
CE
2,2u
50V
0B10199A
|TR
2SC3421
OB05614A
|RK
1.8K
1/4WJ
|
C209L,R
0B41302A
|
CML
0.22u
50V
J
0B10198A
|TR
2SA1358
OBO05622A
|RK
2.2K
1/4WJ
|
C225L,R
0B41292A
|
CML
0.033u
50V
J
0B06142A
|TR
2SC2240
(BL)
OBO5614A
|RK
1.8K
1/4WJ
|C226L,R.
|
0B41294A
|
CML
0.047y
SOV
J
Gis
|OB06299A
|TR
2S8C2878
OBO09677A
|RK
1.0K
1/6WJ
|
C232L,R
0B41291A
|
CML
0.027py
50V
J
OB06299A
|TR
2SC2878
0B09725A
|RK
100K
1/6wJ
|
CN101
0B81760A
|
3P-T
Post
0B10050A
|TR
2SA970
(BL)
OBO9677A
|RK
1.0K
1/6WJ
0B83747A
|
Ribbon
Cable
4P
a
OB06142A
|TR
2SC2240
(BL)
OBO9701A
|RK
10K
1/6WJ
210mm
|=
ae
OB06013A
|TR
2SA733
(P,Q)
OB09729A
|RK
150K
1/6WJ
OE00868A
|
BT3x8
®
Binding
(4)
i
2
OB06100A
2SC945
OB09727A
|
RK
120K
1/6W
J
0E00172A
|
Washer
3mm
-
_
2
.Q)
OBO9717A
|RK
47K
1/6WJ
Toothed
Lock
(2)
tee
eee?
|
ess
0B06013A
|TR
2SA733
(P,Q)
OB09749A
|RK
1.0M
1/6WJ
De
es
=
B
(K,P,Q)
OB09725A
|RK
100K
1/6W
J
ee
0B10125A
|TR
2SC2259
OB05614A
|RK
1.8K
1/4WJ
BA07655A
|
Fuse
P.C.B.
Ass’y
0
~
Calpe
=o
(F,G,H)
OB05614A
|RK
1.8K
1/4WJ
i
0:
0B06142A
|TR
2SC2240
(BL)
OB09694A
|RK
5.1K
1/6WJ
OB60714A
|
Fuse
P.C.B.
“
OB10050A
|TR
2SA970
(BL)
OB09713A
|RK
383K
1/6WJ
0B84108A
|
Auto
Fuse
Holder
5
|
0B06142A
|TR
2SC2240
(BL)
OB09677A
|RK
1.0K
1/6WJ
(1)
o
E
z
Main
P
C.B.
Assy
OB06142A
|TR
2SC2240
(BL)
0B22338A
|RM
9.09K
1/4W
F
0B80235A
|
Wire
RED
90mm
(1)
aS
~v.0..
———
OB10050A
|TR
2SA970
(BL)
0B22193A
|RM
487
1/4WF
0B80236A
|
Wire
RED
120mm
OB10199A
|TR
2S8C3421
OB22283A
|RM
3.09K
1/4W
F
(1)
~~
0B10198A
|TR
2SA1358
OBO9709A
|
RK
22K
1/6WJ
Z
OB06299A
|TR
2SC2878
OB09749A
|RK
1.0M
1/6WJ
&
03
ea
0B06299A
|TR
2SC2878
0B22338A
|RM
9.09K
1/4W
F
BA07654A
|
BTL
Switch
P.C.B.
0B12360A
|ZD
2.7V
RD2.7ESB2
OB22327A
|RM
7.15K
1/4W
F
Ass’y
a
0B12186A
|ZD
18V
RD18JSB2
OBO9653A
|RK
100
1/6WJ
78
10
9
0B12360A
|ZD
2.7V
RD2.7ESB2
OBO9697A
|RK
6.8K
1/6WJ
0B60713A
|
BTL
Switch
P.C.B.
00 00
OB06398A
|SiD
1S8S176
OBO9697A
|
RK
6.8K
1/6WJ
|8§101,102
|
0B70137A
|
Slide
Switch
esc
0B12624A
|SiD
1SS177
OBO9695A
|RK
5.6K
1/6WJ
|CN101
0B83746A
|
Wire
Ass’y
3P
0B12624A
|SiD
1SS177
OBO9665A
|
RK
330
1/6WJ
|
210mm
OB06398A
|SiD
1SS176
0B24227A
|RF
12K
1/2W
0E00791A
|
M2.6x5
©
Binding
OB06398A
|SiD
188176
OBO9665A
|RK
3830
1/6WJ
(2)
SiD
1SS176
0B22283A
|RM
3.09K
1/4W
F
0J05926A
|
Slide
Switch
ra
SiD
1S8S176
0B09701A
|RK
10K
1/6WJ
Holder
(1)
£
SiD
1SS177
0B22327A
|RM
7.15K
1/4W
F
BLK
=
SiD
188177
OB09657A
|RK
150
1/6WJ
XO)
E
OB06398A
|SiD
188176
OBO9669A
|
RK
470
1/6WJ
®
0B51315A
|Output
Coil
0.8uH
OBO9686A
|RK
2.4K
1/6W
J
i
0B51315A
|Output
Coil
0.84H
OBO9669A
|
RK
470
1/6WJ
0B01846A
OBO01846A
RK
4.7K
1/4WJ
RK
4.7K
1/4WJ
Semi
VR
10K
Semi
VR
470
OB32164A
OB32072A
0B32164A
|Semi
VR
10K
OB09629A
|RK
10
1/6wJ
0B32072A
|Semi
VR
470
OB09629A
|RK
10
1/6wJ
4
6
76
08
+
OB09694A
|RK
5.1K
1/6wJ
0B01933A
|RK
220
1/4wJ
|
(T2
2]
60
_Dome
0B09713A
|RK
33K
1/6WJ
0B01933A
|RK
220
1/4wJ
ee,
>
%
ot
—
tHao1
OB09677A
|RK
1.0K
1/6W
J
OBO5695A
|RK
1.0
1/4WJ
NO
ES
0B22338A
|RM
9.09K
1/4W
F
OBO5695A
|RK
1.0
1/4wJ
na
0B22193A
|RM
487
1/4W
F
0B24226A
|
RC
0.22
5W
Cy
fe
0B22283A
|RM
3.09K
1/4W
F
0B24226A
|RC
0.22
5W
60000
:
RK
22K
1/6WJ
OB09713A
|RK
33K
1/6wJ
cei
to
RK
22K
1/6WJ
OBO9709A
|RK
22K
1/6wJ
RK
1,.0M
1/6W
J
RM
9.09K
1/4W
F
RM
7.15K
1/4W
F
RK
100
1/6wJ
RK
6.8K
1/6WJ
RK
6.8K
1/6w
J
RK
5.6K
1/6WJ
\RK
330
1/6wJ
RF
12K
1/2W
RK
330
1/6WwJ
RM
3.09K
1/4W
F
RK
10K
1/6wJ
RM
7.15K
1/4W
F
RK
150
1/6wJ
RK
470
1/6WJ
RK
2.4K
1/6WJ
RK
470
1/6WJ
RK
4.7K
1/4WJ
RK
4.7K
1/4WwJ
RK
10
1/6wJ
RK
10
1/6WJ
0B20093A
O0B09743A
O0B09701A
0B24229A
0B24095A
OB09737A
OB09647A
0B09249A
0B09322A
0B09933A
0B41119A
OB05653A
0B09249A
0B09242A
0B40027A
0B41302A
0B40466A
0B41298A
0B40250A
0B40027A
0B41292A
RK
1.5M
1/6W
J
RK
560K
1/6W
J
RK
10K
1/6W
J
RF
33
1WJd
RF
4.7
1W
J
RK
330K
1/6W
J
RK
56
1/6W
J
C
338P
50V
J
CPP
330P
100V
J
CE
2.2u
50V
(LN)
CPP
560P
100V
G
CML
1500P
50V
J
C
33P
50V
J
C
47P
50V
J
CE
2,.2u
50V
CML
0.22p
50V
J
CE
47p
25V
(LN)
CML
0.1iyn
50V
J
CE
100yu
16V
(BP)
CE
2.2u
50V
CML
0.033y
50V
J
0B22327A
0B09653A
OBO9697A
OBO9697A
OBO9695A
OBO9665A
0B24227A
OBO9665A
0B22283A
OB09701A
0B22327A
OBO9657A
OB09669A
OBO9686A
OBO9669A
0B01846A
0B01846A
0B09629A
OB09629A
SISIS,
Power
Supply
PC.
B.
Assy
a
m
i=]
Fuse
P-C.B.
Assy
Fig.
6
Notes:
1.
Table
of
:
BRN
—
RED
—
ORN
—
YEL
—
GRN
—
BLU
—
vIO
—
GRY
—
WHT
—
BLK
—
2.
Compone
of
the
P.¢
illustratec
otherwise
6.
WIRING
DIAGRAM
a
1.1.)
C126L,R
|
0B41294A
|
CML
0.047y
50V
J
C127
0B41298A
|
CML
0.1y
50V
J
C128
0B09880A
|
CML
iy
50V
J
C129
OB40075A
|CE
22u
16V
Ho
ol?
14.
13
C130
0B40639A
|CE
470u
35V
(LN)
C131
0B40637A
|CE
220u
35V
(LN)
C132L,R
|0B41291A
|
CML
0.027p
50V
J
C201L:R
|0B09249A
|C
33P
50V
J
ha
St
C202L;R
|
0B09322A
|
CPP
330P
100V
J
C203L-R
|0B09933A
|
CE
2.2u
50V
(LN)
C204L:R
|
0B41119A
|
CPP
560P
100V
G
C205L.R
|
0B05653A
|
CML
1500P
50V
J
C206L;R
|0B09249A
|C
33P
50V
J
C207L;R
|0B09242A
|C_
47P
50V
5
C208L;R
|0B40027A
|
CE_
2.2u
50V
C209L-R
|
0B41302A
|
CML
0.22u
50V
J
C325L.R
|
0B41292A
|
CML
0.033u
50V
J
C226L;R
|
0B41294A
|
CML
0.047u
50V
J
C232L-R
|
0B41291A
|
CML
0.027p
50V
J
CN101
0B81760A
|
3P-T
Post
Ribbon
Cable
4P
210mm
(2)!
BT3x8
@
Binding
(4)
Washer
3mm
Toothed
Lock
(2)
OB83747A
OEOO868A
OEOO1L72A
5.3.
Fuse
P.C.B.
Ass’y
BAO765D5DA
|
Fuse
P.C.B.
Ass’y
OB60714A
|
Fuse
P.C.B.
0B84108A
|
Auto
Fuse
Holder
15
a
(Fists
0B80235A
|
Wire
RED
90mm
(1)
OB80236A
|
Wire
RED
120mm
(1)
5.4.
BTL
Switch
P.C.B.
Ass’y.
BA07654A
|
BTL
Switch
P.C.B.
Ass’y
ae
0B60713A
|
BTL
Switch
P.C.B.
ie9
$101,102
|
0B70137A
|
Slide
Switch
CN101
0B83746A
|
Wire
Ass’y
3P
210mm
OE00791A
|
M2.6x5
©
Binding
(2)
0J05926A
|
Slide
Switch
Holder
—
(1)
FCIO4
Power
Supply
PC-B.
Assy
Fig.
6
13
OO0O000
0
Lg
4
7
Main
PC.B.
Assy
RED
-
~
-
‘eo
TH401
O2
OO
oo
ISIS|S]s]
Og
WS
pb
te]
|
EI
RED
z
=
z
CN-101
ISisisls|
ms]
he
fo)
—
se
e
_—
®
a
ony
BTL
Switch
PC.B.
Assy
Fuse
PC.B.
Assy.
Notes:
1.
Table
of
wire
colors
BRN
—
Brown
RED
—
Red
ORN
—
Orange
YEL
—
Yellow
GRN
—
Green
BLU
—
Blue
VIO
—
Violet
GRY
—
Gray
WHT
—
White
BLK
—
Black
2.
Component
side
view
of
the
P.C.B.
is
illustrated
unless
otherwise
specified.
ov
ANTONY
d,
SCHEMATIC
DIAGRAM
MAIN
P.C.B.
R
6.8
Le
>
Q409
we
a
aspiaog
20%
R465
28
s
.
4.7
T40!
N
zs
>
cme
|
ae,
:
DIOZL
x
g
0
°
0 °
=
a
ro)
a
a:
;
t
|
PSIee
ple
F
3
QIH2L
N
bd
I
BTL
Normal
Normol
a
a
(BL)
=
gitar
Quis
8
25A970
(BL)
B
°
vt
aioat
8
2s
|s
vio)
les
280342!
=
Ft
uPC4570C
3
1BV
fe)
:
]
=
CN-101
3
Hi
{2
{3
|
t
Leh
0410
:
2SBI0IS
5
Ss
E
so
=
a
ng
8
T
28C2240
N
0
(BL)
a
olz
e|
+
>
sis
470p
35V
(LN)
ae
i
°
Oe
cms
:
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Power
Supply
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Assy.
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Non-
inverting
Input
B
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VIEW)
Operational
Amp.
IC
uPC4570C
‘Diode
i
is
1SS53,
181555,
or
1SS176
unless
otherwise
specified.
.
28A733,
2SA608SP,
2SA1048
and
2SA1175
are
interchangeable
with
each
other.
7
28C945,
2SC536SP,
25C2458
and
2SC2785
are
interchangeable
with
each
other.
.
Voltage
measuring
conditions
®
With
no
input
signal
applied
to
the
input
jacks.
@
With
no
load
connected
to
the
speaker
terminals.
Notes:
1.
H
CO
bo
+
8.
BLOCK
DIAGRAM
Input
Level
lO}
Power
Amp.
QH3L
a
:
—
DC
Offset
&
Power
ON-OFF
Controt
&
Thermal
EnOreClor
Lch
In
(ow)
Current
neohactar
Channel
A
Bridge/Normat
|
Enc
||
Rech
In
(&
Cs
;
i
O
Remote
Switching
Type
5
Input
Level
ras
Power
Circuit
GND
©
Battery
G)
Input
Level
Lenin
(o)
U20l
ee
Amp,
Pg
>
Detector
‘
(U40N)
Bridge/Normal
Channel.8
:
In
a
SS
Amp.
Input
Level
a
Reh
Leh
Rech
Lh
Speaker
Output
Fig.
8
9.
SPECIFICATIONS
Continuous
Power
Output
....
45
Wx
4
RMS
(four
channels
driven,
4
ohms,
1
kHz,
0.005%
THD)
|
|
30
Wx
2+
90
Wx
1
RMS
(three
channels
driven,
4
ohms,
1
kHz,
0.01%
THD)
90
W
x
2
RMS
(two
channels
driven,
4
ohms,
1
kHz,
0.
01%
THD)
Power
Bandwidth
..........
10—50,000
Hz
(4
ohms,
0.1%
THD)
Total
Harmonic
Distortion
....
0.005%
(4
ohms,
1
kHz,
45
W)
Frequency
Response
........
10—50,000
Hz
+1,
—3
dB
(with
input
sensitivity
control
at
max.)
,
20—20,000
Hz
41
dB
(with
input
sensitivity
control
at
max.)
Signal
to
Noise
Ratio........
Better
than
110
dB
(IHF
A-WTD,
at
rated
power,
with
input
sensitivity
control
at
max.)
Damping
Factor
...........
Greater
than
1,000
(4
ohms,
1
kHz)
Input
Sensitivity/Impedance
...
0.8—0.8
V
variable/10
kohms
(““Normal”
position)
0.2—0.55
V
variable/10
kohms
(“‘Bridge”’
position)
Stereo
Separation
..........
Better
than
80
dB
(4
ohms,
1
kHz)
Power
Source.
............
14.4
V
DC
negative
ground
(10.8—15.6
V
allowable)
Current
Consumption
Max,
.........,
sete
taht
29
A
(four
channels
driven,
4
Shih:
45
Wx
4)
|
36
A
(two
channels
driven,
4
ohms,
90
W
x
2)
Music’
4.5.0.6:
2.
ee
aed
Approx.
10
A
(4
ohms)
Min.
.....
eee
ae
ee
isle
a
ah
Approx.
2
A
(Idling)
Load
Impedance...........
Above
4
ohms
Dimensions*®
.............
820
(W)
x
56
(H)
x
190
(D)
mm
12-5/8
(W)
x
2-3/16
(H)
x
7-1/2
(D)
inches
Approximate
Weight
........
3.8
kg/8
lbs.
6
oz.
*:
Dimensions
do
not
include
protruding
parts.
Height
is
the
panel
height.
®@
Unless
otherwise
noted,
all
measurements
are
with
four
channels
driven
(‘“‘Normal”’
position).
@
Specifications
and
design
are
subject
to
change
for
further
improvement
without
notice.
10
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