
oRDER
NO. SD83012372C1
Servlce
i_
Manual
Stereo Graphic
sH-9025
Area
*
[M]
*
[MC]
Eq
[M],
is available
is
available
ualizer
[MC]
in U.S.A.
in Canada.
SpgCif
iCatiOnS
(Specifications
Weights and dimensions
are subject to change withour notice for
IHF'78
Frequency response
(centerposition)
Maximum
output
voltage :
Rated
Rated
voltage : 1 V
output
total harmonic
distortion
:5 Hz-100 kHz,
(1
V
kHz, THD
8
:0.005%
0.003%
(20
Hz-2O kHz)
(1
kHz)
dB
-1
0.01 %)
lnpuisensitivity :1V
Signal-to-noiseratio
Maximum input
voltage :8 V
lnputimpedance
Gain
CONTENTS
I
:100
:47kA
: 0+1 dB
dB
(1
(110
kHz)
dB,
IHF'
LOCATIONOFCONTROLS....
OPERATION OF
TOTAL FREOUENCY
CONTROL SWITCHES
RESPONSE
SAFETYPRECAUT]ON
otsnsseMeuvtNsTRUcTtoNs....
RESISTORS.A,NDCAPACITORS..
shown
are approximate,
A)
Page
.,.,,,,2
, , . 2
.. . . . .. 3
.,.....3
.... 4
......5
further improvement.)
Band level
controls : +12 dB--12
(7
elements continuously
per
channel)
dB
Centerfrequency :63 Hz, 160 Hz, 4O0 Hz,1
GENERAL
Powersupply
Power
consumption
Dimensions
(HxWxD)
Weight
2.5 kHz,
120
:AC
: 8 W
:g5x430x200mm
(3-11/32"x16-1'li6"x7-Zt\")
:
2.3 kg
6.3
V,60 Hz
(5.1
lb)
kHz, i6
kHz
BLOCKDIAGRAM
CIRCUIT
BOARD
AND
WRINGCONNECTIONDIAGRAM
SCHEMATICDIAGRAM
EXPLODEDVIEW
REPLACEMENTPARTSLIST.
variable
kHz,
page
....6
,,,7
....,..9
.,..12
,,..14
Matushita Engineering
ild Soryie
50 Meadowland
Secaucus.
Technics
I
New Jersey 07094
Company
Parkway
Pansonic
91'238 Kauhi
P.O.
Box
Honolulu, Hawaii 96808-0774
Pan6onic
Division
Canada Limited
of
5770 Ambler Drive,
Ontario, L4W
Hawaii.
774
Canada
Mabushita
of
St.,
2T3
lnc.
Ewa Beach
Electric
Mississuga,
Pansonic
Division of
Fueno
of
De I nfanteria, Klvl 9.7
Ave, 65
ndustrial
Victoria I
Puerto
Carolina.
Company
Sales
MaGushita Eleclric
Rico, lnc.
Park
Rico 00630

.lf
the amplifier
has
recording mode selector and
a
input selector:
an
ooouu00Eo
(Make
setting
as shown in the figure.)
TOTAL FREQUENCY
I
SAFETY
I
1. Before
2. Use
3. After
4. Before
o
1. Unplug
2. Turn
3.
only
damage is
servicing,
(1
tfre lead dress
)
(2)
insulation
from
being exposed
lnsulataon
on the
Measure
the
apparatus, such
The readlng
possibility
is a
PRECAUTION
servicing
(such
manufacturer's
evident.
be sure to restore
and
barriers, insulation
returning
the
the
a serviced apparatus to
to a shock hazard.
resistanoe
power
supply cord and connect
power
switch of the apparatus.
resistance
as screwheads, antenna,
should be as shown
of a
shock
as
value
RESPONSE
replacement
recommended
(See
test
(with
hazard, and the apparatus
of components), unplug
components
following
the
papers,
shields and the like.
a customer, make
figure below.)
jumper
a
an ohmmeter)
control
in figure
the
for
safety. Check condition
to the condition in
the
wire
between the two
between the
shafts,
jumpered
handle
below. ln case a
should be
repaired
+12
+10
+8
+6
+4
^+2
d)
E0
2
o
o
J-6
-8
-10
12
power
supply cord to
which they
following
brackets, etc.
measurement
insulation
prongs
AC
and rechecked
Frequency response
Frequency
prevent
power
of
were originally
resistance
on
the
plug
and each exposed
is
outside of
cord and replace
installed.
;
plug.
the limits
before it is returned
(+
12 dB
(Hz)
an electric
prevent
test to
metalic
position)
shock.
if wear
customer
a
cabinet
specified,
to
customer.
a
part
there
or
on
a
Antenna
terminal
Exposed
metal
part
Tuner, Receiver
3Ma<R<5.2Ma
etc.
where,
Exposed
metal
part
R: resistance
value
Turntable,
R
nearly
=
Amplifier
@
etc.

Bond Poss Filter
P.C.B
Precautions
I
The band
To install
I
connector is completely f
Front
pass
the
ponel
panel
for
filter P.C.B.
panel,
front
installation
is fitted
itted as
insert
to the
the
in
Fig.
main
part
(B).
6
O
P.C.B.
with
into
the chassis as shown by
connector
the
Fig.
as in
6
the arrow so that
(A).
the
Bond Poss
Filter P.C.B.
(B)
Fis.6
Moin P.C.B.
(A)
Fig.6
^
RESISTORS
I
Notar 1.
Part
Please
lmportant
2.
Components identified
important for
use only manufacturer's
Numbering System
Example
ERD
_
ype
I
{Carbonl
25
Wattage
(1/4W)
sl
numbers
use this
safety notice:
AND
indicated
are
part
number
safety. When replacing
Resistor
of
F
Shape
CAPACITORS
most
on
parts
for
by
mark
A
specified
J l0l
Tolerance
(1000)
mechanical
orders.
have
any of these components
parts.
parts.
special characteristics
Numbering
Example
ECKD
Tr*
Value
ECEA
ECCD
ECKD
ECF
Syntem
IH
V"t,.S.
Capacitor Type
:
:
:
:
of Capacitor
102
Value
Tolerance Pec{liarity Type Voltage Peoliarity use
Electrolytic
@ramic
Ceramic
Semi conductor
production
4.
The unit
5.
The unit of capacitance
parts.
of resistance
ECEA
Type
:
1A
:
iC
:
lE
"
"
mark
S
The
lV :
lH :
50 :
25
:
is
service standard
is O
pF
is
Voltage
Oth6rs
lH
10V'
16V
KC
25V
ECFTD:
35V
50V
50V
25V
parts
(otrm).
(microfarad).
:50VDC
:
400VAC
25V DC
K
=
may
and
1OooS,,
P
=
Tolerance
K:
* 10%
+80%,
Z:
+lAWo.
P:
differ
M
10-6
-20%
f
rom
loook0.
=
pF.
Value
-ff/o

Bef. No. Part
RESISTORS
R1,2 S
R3,4 S
R5,6
R11,12 S
813,14
R21,22 S
R23,24 S
R25,26 S
R27,28 S
R29,30
R31,32 S
R33,34
R35,36
R37,38
R39,40
R51
R52 S
R53 S
R54
R55
856
R57,58
R61
862
R71,72
873,74
SA
Sa
S
S
S
S
S
S
S
S
S
S
S
S
A
A
ERO251J224
EBD25TJ333
ERD25TJ824
ERD25TJ224
ERD25TJ104
EBD25FJI02
ERD25TJI54
ERD25TJ104
EBD25FJ472
ERD25TJl04
ERD25FJ822
ERO25FJA22
EROzsFJ222
ERD25TJl04
ERD25FJ181
eRoz5FJ222
ERO?5FJ472
ERD25TJ273
ERD25TJI23
ERD25FJ562
ERD25FJ103
ERD25FJl02
ERDSl FJ821
ERDSl FJ681
ERD25FJ471
ERD25FJ33O
No. Value
220K
33K
820K
220K
r00K
1K
150K
100K
4.7K
't00K
8.2K
8.2K
2.2K
100K
180
2.2K
4.7K
27K
12K
5.6K
10K
1K
820
680
470
33
Ref. No.
R101,102
R103,
r04 S
R105,106
R107,108
R109,110 S
R'trl,112
R113,114
R201,202
R203,2(N S
R205,206
R207,208
R209,210
R211,212
8213,214
R301,303
R3m,304
8305,306
R307,308
R309,310
R311,312
R313,314 S
8401,402 S
R403,404 S
R405,406 S
R407,408
R409,410
R41
1,412
R4r3,414
Part
S
ERD25FJ821
ERD25FJ122
S
ERD?EFJ122
S
ERD25FJ152
ERO25FJ122
ERD25FJ152
s
ERD25FJl
S
ERD25FJ821
s
ERD25TJ124
s
ERD25TJ124
ERD2sTJ823
s
ERD25TJ683
s
ERD25TJ563
S
ERD2sTJ563
S
ERD25FJ181
S
EBD25FJ391
S
ERD25FJ391
S
S
ERD25FJ1
S
ERD25FJ391
S
ERD25FJl
ERO25FJ221
ERD25FJl 22
ERD?5FJ2I2
ERD25FJ272
S
ERD2BFJ272
S
ERD?5FJ272
S
eRo25FJ272
S
ERD?5FJ272
No.
Value
820
1.2K
1.2K
1.5K
1.2K
1.5K
52
1.5K
820
120K
120K
82K
68K
56K
56K
180
390
390
21
120
390
51
150
220
1.2K
2.7K
2.7K
2.7K
2.7K
2.7K
2.7K
Ref. No. Part No. Value
CAPACITORS
c5
cll, 12
cl3, 14
c15, 16
c17, 1A
cI9,20
c21,22
c23,24
c31
c32
c33
c34
c35
c41,42
cr''3,44
c45,46
c/.7,48
cl01,102
cl03,104
cl05,106
cl07,108
cl09,
cl11
,112
cl 13, 1 14
c201,202
c203.2U
1
10
A
s
s
s
s
s
s
s
ECEAlASIOl
ECEA25Z4R7
ECCD1
H101 K
ECCDl
H101 K
ECCD1 H101 K
ECEA25Z4R7
ECEAI ES220
ECEAl E522O
ECEA50Zl
ECEAlASIOl
ECEAl ESlOl
ECEAI
HSlOO
ECEAlV5330
ECKD1H223ZF
ECEATVS4TI
ECEA1CS331
ECEAl
CS102
ECEA50Zl
ECEA5OZR33
ECEAsOZRl
ECFTD6S3JX
ECFTD2T3JX
ECFTDl03JX
ECFTD392JX
ECEAl
HSlOO
ECFTD223JX
5
100
4.7
100P
100P
100P
4.7
22
22
1
100
100
l0
33
0.022
470
330
1000
1
0.33
0.15
0.068
o.o27
0.01
0.0039
l0
o.o22
Hef. No. Part
c205,206
c207,208
c209,210
c211,212
c213,214
c1001
s
s
A
No Value
ECFTDS22JX
ECFTD332JX
ECFTD222JX
ECKDl
H821 KB
ECKDl
H331 KB
ECKDKCl03PF2
0.0082
0.0033
o.oo22
820P
330P
0.0r
BLOCK
I
DIAGRAM
tPrarfi--l
r----
MUTING CIRCUIT
TAPE
s2-r)l
MONITOR
I
)
(s3-3)
ot
ori
tct
BUFFER
svrTA755595
BUFFER A OP
(2.5
Oclovc
OlOl
-
OIOI
lt/21
rcr
tct
oP
-Oll3
u/2)
aMP.
filter)
AMP.
Oll3
Dro
(POWER
,
IND.)
POWER
(s4
)
AC LINE

B94 I
; ULATOR
t6v
c45
130
D
MA
I5V
7,8
I
t50
ZENER
DI
SVDIB4B42
RECT
C46
l6kHz
114
0
GROUND
lz"
tt
Power
ON
POINT
Mulino
oN rifie
-l
AC 12OV
60Hz
T1
I
i
Power
OFF
@
ET
Ril4
OlOl
2SCt8r5
BAND PASS FILTER
l,
Hz
6k
___l
-l14
Dto
LN224RPH
POWER
IND
Notes:
'1"
51-1 - S1-6 :
2. S2-1
-
3. S3-1
-
4. S4
The B
5.
For
the resistanceand capacity of R
by the
standard. Therefore, there may exist
the
internal impedance of the
,,,,r,,,,,r,,r,',is,ii,
7.
8.
Recording
S2-2 :
Tape
(
:.Equalization
S3-4
: Power
channels use
and L
DC
electronic circuit
Signal
Positive
mode switch
(straight
source
*
monitor
switch in
tape
-
(EO)
switch
in
the same circuit.
tester
lines of left channel.
(+B)
voltage
-
EO)
in
,,source,,
)
switch
position.
"on"
channel, refer to
(high-impedsnce)
some errors in the
DC
circuit tester.
lines.
"straight,,position.
position.
position.
in "on';
the Lchannel.
with
rrrr>
Negative
(on
*
off)
chassis
the
voltage
values, depending on
(-B)
taken as
voltage
lines.

@
I
REPLAcEMENT
f
Notes:
1. Part
numbers
2. Important
when replacing
_
3.
Eracketed
4.
"S"
The
5.
The
Ref.
No.
INTEGRATED
tcl
,2
TRANSISTORS
01,2
03
Q4
05
a6
4101-114
DIODES
Dl
D3s
D4,5
D6
D7,8
D9s
D10
mark
parenthesized
CIRCUITS
SVITA75559S
2SC2878A-T
2SC181
2SA1015-Y
25D
25894
2SC181
svor 84842
A
MA162A
SVDl52076A
MA27W-A
MAl I5OH
MAl62A
LN224RPH
TRANSFORMERS
T1
tMI
rl
[Mc]
SWITCHES
sl,2.3
s4
VARIABLE
VRl-14
SLTK5J 14-Z
A
SLTKSJlT-Z
A
SSH
ssH1071
A
RESISTORS
EVADO3ClOG25
are
sa{ety
any
indications
is service
Part
No.
5L-G
1 265-0
1
-P
5L-G
K3 1
PARTs
indicated
notice:
Components
of these
in Bef.
standard
numbers
Description
Operation/Buffer
Amplifier
Mute
Mute
Mute
Regulator
Regulator
Band
Rectifier
Rectifier,
Power
Muting
Switching, Mutinl
1$V Zener
Porer
LED
Light Emitting
Diode
Power
Power
E8,
Tape
Monitor,
Mode
Puer
Frequency
Control,
200ko(G)
on most
components,
No.
columns
parts
in
the
column of
Switching
Switching
Switching
Pass
Filter
Muting
Supply,
Supply,
Source
Source
Bec
Soure
Level
Ltsr
mechanical
identif
and
CABINET
2
3
4
5
6
7
?-1
8
eas
10
11
12
13
13
14
15
scREws
NI
N2s
N3s
N4S
N5S
N6
N7s
N8s
N9s
WASHER
N15
parts.
ied by
use only m-anufacturer's
specify
the area.
may differ {rom
description
Ref. No.
and CHASSIS
1
tMl
tMcla
SGWKHSO25E
SGXK68
sBc337-1
SBD79
SUBKl 1
sBc433-1
SGPKHSO25M
SKLKl
sJF3055-1
RHRl 1 1
sKc1370S
SJS59O1
sJS9221
a
SJS9223
SJT391 1
SH B301
XTS3+8BFZ
S
XTB3+8BFN
XTB3+8BFN
XT83+8BFN
XTB3+8BFN
sNE2095-2
XTB3+8BFZ
XT83+lOBFZ
XT83T6BFN
XWG3 Plain
S
Please
use this
have
mark
2\
Parts
productlon
stand for
Part
No. Description
RJA9Y
N
-1
part
special
specified
without
quantity
the
PARTS
Panel Front
Holder
Button,
Button
Connection
Button
Panel,
Rear
(dFeet)
Foot
Terminal Board
AC Cord, Power
Sou rce
Bushing
Cabinet
Connector
Socket
Socket
Connector
Clamper,
Tapping,
Tapping,
Tapping,
Tapping,
Tapping,
Tapping,
Tapping,
Tapping,
Tapping,
@3 12
indications
per
set.
& Pcs
(1)
(1)
(14)
(3)
(3)
(1)
(4)
(1)
(1)
(1
(1
(1
(l
(1
(2)
l2t
l2l
lzt
l2t
(1)
tzt
tzt
l2t
tzt
parts
order.
can
Bef. No.
ACCESSORTES
A1
12\
A2
A2
PACKING PARTS
Pl
P1
P2
P3
P4
)
)
)
l
)
number for
characteristics important
parts.
these
parts.
Ass'y
Power
Rod
Ass'y
Lead Wire
3xB
@
3x8
@
3x8
@
3x8
@
3x8
@
Cabinet
3x8
@
3x10
@
3x6
@
[M1
tMCl
IM]
tMcl
for
be used
sJP2129-5
SQFKlOO29
soFK10030
SPG K,I 07
SPG
SPSK54
SPSK55
SPP7l
safety.
for
Areas
*
*
Part No.
K1 06
9
all areas.
is available
[M]
is
available
[MC]
Cord, Connection
lnstruction
lnstruction Book
Carton
Carton Box
Pad
Pad
Polyethylene Sheet
in
U.S.A.
in Canada.
Description
& Pcs
Book
Box
(Leftl (1)
(Right)
\l
I
i
I
l2l
(1)
(1)
(1)
(1)
(1)
(I
)
o
Accessories
Printed in
Japan
830104400@
rM
,--1'