Technics SH-8029 User manual

ORDER NO. HAD8606554A4
ervice
Manual
Equalizer [.;
Stereo Graphic Equalizer
Color
(K)... Black Type
[PA] ... Far East PX
[PE] ... Eurpoean Military
Please use this manual together with the service manual for Model No. SH-8028, Order No. HAD8602362C0.
Mi
REPLACEMENT
PARTS
LIST
[
CHANGE
Notes:
Mentioned
in
this
parts
list
are
only
those
changed
in
Model
No.
SH-8028
(K)
for
destination
[PA]
area.
Change of Parts No.
SH—8028 SH—8029
[PA, PE]
[PA]
CABINET AND CHASSIS PARTS
SGXK110U SGXK110—2U 1
14 SGPKH8028—KX SGPH8029—KP 1
16
SJS5719
Deletion,
Connector
(7
pin)
J2
16 SJS5433
17 SJT3709
SJT3415
Part Name and Description Remarks
Deletion, Connector (4 pin) J1
Deletion, Post (7 pin) J2
Deletion, Post (4 pin) J1
Addition, Connector (6 pin) J4
P.C.B. Holder
Addition, Socket (8 pin)
Addition, Rubber Spacer
Addition, Socket (4 pin) J1
Addition, Socket (6 pin) J4
Addition, Socket (7 pin) J2 1
f
SJS50671DS
SHE185
SJS804
SHGK463
SJT30443-—V
SJT30643—V
SJT30743—V
17
18 —
:
21 —_—_
2 | — |
24
N5 XTB3+10G FZ XTB3+10GFZ Tapping, G) 3x10
ACCESORY
2) ©
v m
‘
.
SPGK272
PACKING
RESISTORS
R121,
122
=
ERDS2TJ332
[Aesion.
8k
Resor
_}
_2__}
__
[ri3i244
{|
—
|
ERDs2TJ222
Addition,
2.2kQ
Resistor
eo
eae
[R112
|
SiS
RDS2TN992_—
|
Addition,
33k
Resistor
|
|
Pri.
|
—
———~*«|_
eR
bs2Tv222_——
|
Addition,
22k@Resistor
S|
2
|
ba . eolenth . Miele eee ~ Matsushita Electric Tratngg Co., Ltd.
"Technics
eri
paid
Cima
er
ea
P.O.
Box
288,
Central
psaka
Japan
Hamamatsu-cho 2-Chome, Minato-ku, Tokyo 105, Japan

Mi
CIRCUIT
BOARDS
@ Change in switch/jack P.C.B.
SH-8028
REC OUT PLAYBACK
zz
Hs
4
tea
fas
SWITCH /
JACK PC.B
*(_-) Indicates resistors and
capacitors are use product
for [EGA] area.
SH-8029
\
LINE IN] [LINE OUT | TAPE
REC OUT PLAYBACK
CONNECTOR
rd
P.C.B.
SWITCH /
JACK PC.B
sme \ ame aw ae a» a om = &
[mm an am a a as a= aw as oo”

MH SCHEMATIC DIAGRAM
e Change in switch/jack Circuit
SH-8028 [PA] SH-8029 [PA, PE]
Input signal
(source signal)
REC OUT
TAPE
Rii5 |OOK
PLAYBACK
(R ch)
LINE IN
LINE OUT
REC OUT
TAPE
PLAYBACK
ry SWITCH/JACK CIRCUIT
LINE OUT
REC OUT
TAPE
bane BACK
(R ch)
LINE IN
LINE OUT
ae OUT
TAPE
PLAYBACK
emp GED =e eS ee ee ee a
CONNECTOR
CIRCUIT
Rii5 i00K

_SH-8029
Mi EXPLODED VIEW
e Change in rear panel
SH-8028
N3
$5 For [XA,PA,PE] areas
{Voltage selector)
Power transformer
T
_
Se
For
(M,MC,XA,PA,PE]
>
{AC
outlet)
21For (EK] only
{Cord Cover)
19 For {XA,PA,PE) areas
(Clamper)
SH-8029
Printed in Japan
860600400 ® TM
roy
ee
|
|
870200450

ORDER NO. HAD8602362CO
Service
Manual
Stereo Graphic Equalizer
SPECIFICATIONS
Frequency response GENERAL
Equalizer
SH-8028
Color
(K)--+-+ Black Type
(S) «+++ Silver Type
(K)(S)
(K)(S)
(K)(S) | [EJ ..... Continental Europe
(K){S) | [EH] . Holland
(K)(S) | [EB] .... Belgium
(K)(S) | (EF) . France
(K)(S) | [EK] . United Kingdom
(K)(S) | [EGA] ... F.R. Germany
(K)(S) | [Ei] ..... Italy
(K)(S) | [XL] . Australia
(K)(S) | [XA] . Asia, Latin America,
Middle Near East,
Africa & Oceania
(K)(S) | [PA] Far East PX
(K)(S)
European
Military
(center position) :5 Hz~100 kHz, —1 dB Power supply : AC 60 Hz, 120V
Maximum output (For U.S.A. and Canada)
voltage 7:8 V (1 kHz, THD 0.01%) AC 50 Hz/60 Hz, 240 V
Rated output voltage 1V (For United Kingdom and Australia)
Rated total harmonic AC 50 Hz/60 Hz, 220 V
distortion :0.005% (20 Hz~20 kHz) (For continental Europe)
0.003% (1 kHz) AC 50 Hz/60 Hz, 110 V-127 V/
input sensitivity 71 V 220 V—240V
Signal-to-noise ratio - 100 dB (DIN 45 500) (For other areas)
- 410 dB (IHF‘A) Power consumption 77 W
Maximum input Dimensions
voltage °8 V (1 kHz) (HxWxD) : 86 x 430 x 193.5 mm
Input impedance > 33 kf (3-3/8 x 16-15/16” x 7-5/8"’)
Gain
:0+1
dB
Weight
:
2.1
kg
(4.6!b)
Channel balance (DIN 45 500)
250 Hz~6300 Hz > +0.5 dB
Channel separation (DIN 45 500)
1 kHz :70 dB
Band level controls :+12 dB~-12 dB
(7 elements continuously variable
per channel)
Center frequency :63 Hz, 160 Hz, 400 Hz, 1 kHz,
2.5 kHz, 6.3 kHz, 16 kHz
Specifications are subject to change without notice
for further improvement.
‘Technics
Matsushita Services Company
50 Meadowland Parkway,
Secaucus, New Jersey 07094
Panasonic Sales Company,
Division of Matsushita Electric
of Puerto Rico, Inc.
Ave. 65 De infanteria, KM 9.7
Victoria Industrial Park
Carolina, Puerto Rico 00630
Panasonic Hawaii, Inc.
91-238, Kauhi St. Ewa Beach
P.O. Box 774
Honolulu, Hawaii 96808-0774
Matsushita Electric
of Canada Limited
5770 Ambler Drive, Mississauga,
Ontario, L4W 2T3
Matsushita Electric Tia ding Co., Ltd.
P.O. Box 288, Centrai@saka Japan
Panasonic Tokyo Office
Matsushita Electric Tia ding Co., Ltd.
6th Floor, World Trade Center Bidg.,
No. 4-1, Hamamatsu-;f10 2-Chome,
Minato-ku, Tokyo 10§, Japan-

SH-8028
Deutsch (German)
TECHNISCHE
(DIN 45 500)
Frequenzgang
(mittelstellung)
Maximaltausgangs-
spannung
Nennausgangsspan-
nung
Nennklirrfaktor
DATEN
*5Hz~100 kHz, —1dB
>8V(1 kHz, THD 0,01%)
:1V
-0,005% (20 Hz~20 kHz)
0,003% (1 kHz)
Eingangsspannung :1V
Geraduschabstand - 100 dB (110 dB, IHF, A)
Maximaleingangs-
spannung -8V (1 kHz)
Eingangsimpedanz =: 33 kQ
Verstarkung >0+1dB
Kanalsy mmetrie
250 Hz~6300 Hz :+0,5dB
Kanaltrennung 1kHz : 70dB
Frangais (French)
CARACTERISTIQUES
(DIN 45 500)
Réponse de fréquence
(position centrale)
Tension de sortie
maximale
Tension de sortie
nominaie
Distortion harmonique
totale
Sensibilité d’entrée
-5 Hz~100 kHz, —1 dB
-8 V (1 kHz, THD 0,01%)
-1V
:0,005% (20 Hz~ 20 kHz)
0,003% (1 kHz)
“1V
Signal/Bruit
:100
dB
(110
dB,
IHF’
A)
Tension
d’entrée
maximale °8 V (1 kHz)
impédance d’entrée 233 kO
Gain :0+1 dB
Equilibrage de canal
250 Hz~6300 Hz > +0,5 dB
Séparation de canal
1 kHz :70 dB
Espanol (Spanish)
ESPECIFICACIONES
(DIN 45 500)
Respuesta de frecuencia
(posicién central)
Tensién de salida
maxima
Tension de salida de
régimen
-5 Hz~100 kHz, — 1 dB
:8 V (1 kHz, THD 0,01%)
ey
Distorsi6n armonica total
nominal
Sensibilidad de entrada :
: 100 dB (110 dB, IHF’ A)
Relacion de senal ruido
Tension de entrada
maxima
Impedancia de entrada
Ganancia
Equilibrio de canales
250 Hz~6300 Hz
Separacién de canales
1 kHz
:0,005% (20 Hz~20 kHz)
0,003% (1 kHz)
1V
>8 V (t kHz)
733 kD
:0+1 dB
> +0,5 dB
:70 dB
Frequenzgangregler :+12dB~—12d8
(7 Regler, stufenlos verstellbar)
Mittenfrequenzen : 63 Hz, 160 Hz, 400 Hz, 1 kHz,
2,5 kHz, 6,3 kHz, 16 kHz
ALLGEMEINE DATEN
Stromversorgung : Wechselstrom 50 H2/60 Hz, 220 V
(Fur Kontinentaleuropa)
Wechselstrom 50 Hz/60 Hz,
110 V—127 V/220 V-240 V
(Fur andere Lander)
Leistungsaufnahme > 7W
Abmessungen
(Hx BxT) : 86 x 430 x 193.5 mm
(3-3/8 x 16-15/16” x 7-5/8"")
Gewicht : 2.1 kg (4.6 Ib)
Spezifikationen k6nnen infolge von Verbesser ungen ohne
Ankiindigung geandert werden.
Commandes de niveau
de gamme :+12 dB~—12 dB
(7 éléments, continuellement
variables)
-63 Hz, 160 Hz, 400 Hz, 1 kHz,
2,5 kHz, 6,3 kHz, 16 kHz
Fréquences charniéres
GENERALITES
Alimentation -CA 50 Hz/60 Hz, 220 V
(Pour l'Europe)
CA 50 Hz/60 Hz, 110 V—-127 V/
220 V-240 V
(Autres)
Consommation :7W
Dimensions
(hx!xpr) : 86 x 430 x 193.5 mm
(3-3/8" x 16-15/16" x 7-5/8”")
Poids
: 2.1 kg (4.6 Ib)
Sujet a changement sans prearis.
Controles de nivel de
banda :+12 dB~-12 dB
(7 elementos, continuamente
variables)
-63 Hz, 160 Hz, 400 Hz, 1 kHz,
2,5 kHz, 6,3 kHz, 16 kHz
Frecuencia central!
EN GENERAL
Alimentacion de
corriente >=CA 50 Hz/60 Hz, 220 V
(Para Europa continental)
CA 50 H2/60 Hz, 110 V-127 V/
220 V-240 V
(Para otros paises)
Consumo decorriente <:7W
Dimensiones
(altoxanchoxprof.) : 86 x 430 x 193.5 mm
(3-3/8"' x 16-15/16" x 7-5/8")
Peso : 2.1 kg (4.6 Ib)
Estas especificaciones estan sujetas a cualquier cambio sin
previo eviso,

CONTENTS
SAFETY PRECAUTION .....
LOCATION OF CONTROLS ...
OPERATION ......-+--e88:5
DISASSEMBLY INSTRUCTIONS
RESISTORS and CAPACITORS
Page
BLOCK. DIAGRAM «os s.6.8 Soe iio ee on ee oe ee ee . 6
CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM... 7,8
SCHEMATIC DIAGRAM .........002 802808 ee enease 9,10
REPLACEMENT PARTS LIST ..........2.2cc0cceeaae 11,12
EXPLODED VIEW..........--. ee ee ee ee eee re 11,12
a SAFETY PRECAUTIONS (This “safety precaution’ is applied only in U.S.A.)
OfwWN>
Before servicing, unplug the power cord to prevent an electric shock.
When replacing parts, use only manufacturer's recommended components for safety.
Check the condition of the power cord. Replace if wear or damage Is evident.
After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to
prevent the customer from being exposed to a shock hazard.
e INSULATION RESISTANCE TEST
1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with ohmmeter between the jumpered AC plug and each exposed metal! cabinet part, such as
screwheads antenna, control shafts, handle brackets, etc.
Equipment with antenna terminals should read between 3MQ2
and 5.2MQ to all exposed parts. (Fig. A) Equipment without antenna terminals should read approximately infinity to
all exposed parts. (Fig. B)
Note: Some exposed parts may be tsolated from the chassis by design. These will read infinity.
Antenna
terminal
Exposed
metal
part
Onmmeter
(Fig. A)
Resistance = 3MQ—5.2MQ
Exposed
metal
part
Onmmeter
(Fig. B)
Resistance = Approx oo
4.
If
the
measurement
is
outside
the
specified
limits,
there
is
a
possibility
of
a
shock
hazard.
The
equipment
should
be
repaired
and
rechecked
before
It
is
returned
to
the
customer.
Mi LOCATION OF CONTROLS
16kHz
6.3kHz
Left channel | 2.5kHz
band level
controls kHz
(£12dB) 400Hz
160Hz
63Hz
Power switch
( = on, & off)
Right channel
1I1kHz band level controls
{(+12dB)
Recording mode selector
{ m EQ, §b straight)
Equalizer switch
(.- on, B off)
input selector
( m tape, J source)
Tech
oe iti haics
_ selector
For [XA] , [PA] and[PE] areas
AC outlet (Unswitched)
For [M] ,[MC] ,[XA] ,[PA] and
[PE] areas
Line output
Mi OPERATION
ey Input selectors: Select the sound source.
m@ ‘AV/aux": To use equipment connected to the
auxiliary input (““AV/AUX”) terminals.
@ “CD”: To listen to a compact disc.
@ ‘tuner’ To listen to radio broadcasts.
@ “phono”: To listen to phono discs.
4) Loudness switch: ‘off’
© Tape-monitor selector: ‘‘tape 1/DA tape” (Refer to note).
(The “‘tape’”’ indicator will be illuminated)
@ Balance control: “center position”
ve CD direct switch: ‘‘off”’
@ Tone controls: ‘center position” To listen to CD direct: ‘‘on”
©
Power
switch:
‘on’:
im
Volume
control:
“9-1”
Integrated
amplifier
(option)
® Begin the disc play or tune to the radio
broadcast.
iL) Adjust volume level.
A) ‘‘'on” (M_ =)
1) Adjust tone quality as desired.
—\ This unit
(SH-8028)
10 11 12
Press the equalization switch (equalizer) in to the ‘off’ (m= _ H) position to listen to uncorrected sound, or when recording.
Notes
e Ifthe amplifier has a recording mode selector and an input selector: (Make setting as shown in the figure.)
(rec
selector)
7/
\
ae
(---¥
or
tuner
U
|
oo
Ly
iy
selector)
o
OO
8
000
0
0
® If your amplifier has terminals (GRAPHIC EQ./EXTERNAL) for connection of other equipment, use of the recording selector is
unnecessary.
ae,
Procec
Po
Ref.
Proce
1-2

SH-8028 |
Mi DISASSEMBLY INSTRUCTIONS
Page
‘SGn
os
eas
Ref.No.
|
tow
to
remove
the
cabinet
Ref.
No.
How
to
remove
the
band
level
Phaacewarcee: 10 1 control volume P.C.B.
. » + + 11,12
phates
11,12
@
Remove
the
5
screws
(@
~
@)
@
Push
the
3
tabs
aside.
(@)~
©)
)
@ Remove the sub panel.
Voltage selector
For [XA] ,[PA] and[PE] areas
AC outlet (Unswitched)
For [M] ,{MC] ,[XA],[PA] and
[PE] areas
® Remove the 14 knobs.
Line output
Front panel
Mi OPERATION
resistance
test
to
zy
Input
selectors:
Select
the
sound
source.
© Loudness switch: “off mM “AV/aux": To use equipment connected to the
auxiliary input (‘‘AV/AUX") terminals.
© Tape-monitor selector: ‘‘tape 1/DA tape” (Refer to note). gw “CD”: To listen to a compact disc.
(The “tape” Indicator will be illuminated) @ “tuner” To listen to radio broadcasts.
m “phono”: To listen to phono discs.
@o
Balance
control:
‘center
position”
Screw
ey
ym
CD
direct
switch:
“off”
pie
Ge
a
ition’.
To
listen
to
CD
direct:
‘‘on”
ibinet
part,
such
as
@
Tone
controls:
‘center
position
;
-
rocedaure
ead
between
3MQ
©
Power
switch:
“on”
®
Volume
control:
“01
1
2
@
Remove
the
2
screws
(@,
@)
@ The tabs with project (at 3partions)
from the front panel are engaged with
imately infinity to
@ Push the 11 tabs aside. (@~ @)
integrated the bottom board. @® Remove the band level control volume
amplifier
P.C.B:
(option)
Front panel
® Begin the disc play or tune to the radio — set z eed) ¥. € Gs os
broadcast. Ob oN
T) Adjust volume level. Se Bee
Siam Sty Band level
6) on” (B_ =) volume P.C.B.
iE) Adjust tone quality as desired.
SSS SSS S555 55 This unit @ Remove the 2 connectors (J1, J2) of front panel.
; "3 (SH-8028) J1 (4pin)
| ee
ae
I
| H How to fit the volume rod
Jipment should be
Front panel
10 11 12
To listen to corrected sound of phono discs or radio. Light guide plate LED
How to remove the power supply
P.C.B. and switch P.C.B.
@ Remove the 3 screws (Q~ @) of
power supply P.C.B.
@ Remove the 4 screws (@) ~ @) of
switch P.C.B.
inel To record corrected sound of phono discs or from radio. ‘“source”’ (m_. BH) | EQ") |
controls
To record the uncorrected sound of phono discs or from the radio. “straight” (=. HB)
To
listen
to
corrected
sound
from
a
tape
deck.
“tape”
(Bm)
Set
to
any
position.
Press the equalization switch (equalizer) in to the ‘‘off” (m= _ HL) position to listen to uncorrected sound, or when recording.
Procedure
1-2 -»3
me
Insert with long leg (anode) down.
Fit the knob with gate hole side down.
Notes
e Ifthe amplifier has a recording mode selector and an input selector: (Make setting as shown in the figure.)
(rec
selector)
|
7/
\
(input
selector)
phono
or
tuner
0
tape
Jing
mode
selector
co
00
0
0000
0
Q, Bi straight) — —
e If your amplifier has terminals (GRAPHIC EQ./EXTERNAL) for connection of other equipment, use of the recording selector is
rce) unnecessary.
ee
eae
ae
ee

| SH-8028
Mi RESISTORS & CAPACITORS
Notes:
1.
Part
numbers
are
indicated
on
most
mechanical
parts.
3.
The'’@“
mark
is
service
standard
parts
and
may
differ
from
Please
use
this
part
number
for
parts
orders.
production
parts.
2.
Important
safety
notice:
4.
The
unit
of
resistance
is
Q(ohm),
K
=
10002,
M
=
1000kN.
Components identified by A mark have special characteristics 5.
important for safety. When replacing any of these components = ¢
use only manufacturer’s specified parts.
The unit of capacitance is ZF (microfarad). P = 10° uF
Bracketed indications in Ref. No. columns specify the area.
Parts without these indications can be used for all areas.
Numbering System of Resistor Numbering System of Capacitor
Example Example
ERD 25 F J 101 ECKD 1H 102 Z F
Type Wattage Shape Tolerance Value Type Volgage Value Tolerance Peculiarity
ERD
ERG
: Carbon
- Metal Oxide
@ RESISTORS
R3
R4
R5
R6
R7
R8
RQ
Rit, 12
R101, 102
R103, 104
R105, 106
R107, 108
R109, 110
R111, 112
R113, 114
ERGIANJ330
ERDS2TJ222
ERDS2TJ472
ERDS2TJ473
ERDS2TJ273
ERDS2TJ562
ERDS2TJ103
ERDS2TJ224
ERG2ANJ680
ERDS2TJ473
ERDS2TJ102
ERDS2TJ473
ERDS2TJ104
ERDS2TJ473
ERDS2TJ472
ERDS2TJ102
10
1A
2A
$1
: 1/8W
> IW
: 2W
: 1/2W
R117, 118
R119, 120
[EGA] only
R121, 122
[EGA] only
R201, 202
R203, 204
R205, 206
R207
EROS2TJ181
ERDS2TJ102
ERDS2TJ102
ERDS2TJ222
ERDS2TJ222
ERDS2TJ222
ERDS1TJ681
: Elect
rolytic
: Ceramic
: Ceramic
: Semi-conductor
C1,2
C3, 4
C5, 6
C7
C8
Cg
C10, 11
C21, 22
C101, 102
C103, 104
C105, 106
C107, 108
C109, 110
[EGA] only
C111, 112
[EGA] only
ECKD1H223ZF
ECEA1EU221
ECEA1CU221
ECEA1EK4R7
ECEA0JU101
ECEA1EU101
ECKD1H2232ZF
ECKD1H223ZF
ECEA1EK4R7
ECCD1H101K
ECCD1H101K
ECEA1EK4R7
ECCD1H151K
ECCD1H151K
0.022
220
220
4.7
100
100
0.022
0.022
4.7
100P
100 P
4,7
150P
150P
Tolerance
K : £10%
: +80%, —20%
M : 20%
: 400V AC
C203, 204
C205, 206
C207, 208
C209, 210
C211, 212
C213, 214
C215, 216
C217, 218
C219, 220
C221, 222
C223, 224
C225, 226
C227, 228
C229, 230
C251, 252
C253, 254
ECEA1HK3R3
ECFTD683KXL
ECEA1HK010
ECFTD333KXL
ECEA1HKR47
ECFTD123KXL
ECEA1HKR22
ECFTD392KXL
ECFTD473KXL
ECFTD182KXL
ECFTD333KXL
ECKD1H681KB
ECFTD123KXL
ECKD1H331KB
ECFTO333KXL
ECKD1H223ZF
R115, 116 ERDS2TJ104 470P
C201, 202 ECKD1H471KB
M@ BLOCK DIAGRAM
oe see’ Phono signal lines
er
Oe} +] Fe
Dr} 3
thy +8) Q101
eo Muting
Q1, 2 >
reat ‘@
Ona peneonercnrewninaicntentted PN goin i ltietetttetettetatah IN pita tte fen oa IS TI iar reanrnremenenreenritnicteat
LINE OUT | Ojitinneninnnnminninnnncnnn Qo 2 :
+ | off
Si-i l
Rec mode}
Jeo = S3
pour’ BO Saal . EQ
< REC OUT | ouT | Oe 6 straight
i IC 1011/2)
on
I
|
I
| AN6555
H
|
|
|
|
Buffer IC 201 (202)
M5229P
B.P.F.
Band level
OE ES Cet: -1248 rople Rik Ne
tO
a
UO
aS
7.
rope Ae ee
PLAYBACK a.
ane Fn
| | |
B.PF, _._._ | |
a : :
{
|e ‘7 Te eee
63Hz -- -- —------ IS6kHz

SH-8028 SH-8028
1 2 3
@ CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM
NOT USED [LINE OUT |
ae are reg REC OUT PLAYBACK
[EGA] [Ei]and [XL] areas [PA] and [PE] areas [XA] [PA] and[PE] areas only i fies, ea] a
A ( UNSWITCHED) ry
SWITCH /
JACK PC.B
---—T
* ( -) Indicates resistors and
capacitors are use product
for [EGA] area.
:
ea ee 4
‘{M, MC] ... AC120V, 60Hz |
j(E] [EH] [EB] .. .AC220Vv, 50/60Hz
[EF] [EGA] [Ei] )
[EK] [XL] ..... AC240V, 50/60Hz |
j[XA] [PA] [PE] ...AC110~ 127 |
} /220~ 240V,
50/60Hz .
ee et J
c
SUPPLY
P.C.B
‘ | | | | |
D
|
1(S1)
|
(S2)
|
($3)
REC MODE TAPE EQUALIZER
E|
(
63Hz)
(16
OHz)
(400Hz)
(IkHz)
(2.5kHz)
(6.3kHz)
(16
kHz)
(63Hz)
(160HZ)
(400Hz)
(kHz)
(2.5kHz)
(6.3kHz)
(16kHz)
LEFT
CHANNEL
RIGHT
CHANNEL
IC7Q
Ql
Q2
IC20|
Ql02
Qiol
IC202
IC1O|

SH-8028
1 2 3 4 5 6 7 8
_ SCH EMATIC DIAGRAM __ (this schematic diagram may be modified at any time with the development of new technology)
Note
1:
‘
7
as
si
pacers
etl.
Mac
1.
$1:
Recording
mode
selector
in
“EQ”
3.
$3:
Equalization
switch
in
‘‘on”
position.
5.
$5:
Voltage
selector
in
‘‘'220
~
240V"
position
mn position. ( =; €Q, M Straight) (= ;on, M@ ;off) (For [XA], [PA] and [PE] areas) (M, MC]
2. S2: Input selector in “source” position. 4. $4: Power switch in ‘’‘on”’ position.
(.m
;tape,
M
;source)
(=
;on,
M@
;off)
:
S$
ox
1C1Ol
Pe eee eee ee ee me eS Be Benne, AN6555 i 2
£
BUFFER
AMP
w
s
° Wx
2 S
Input signal
(source
signal)
©
ae
a
=
2
pi)
(bch)
:
S4
(RIN9) Yo ( POWER)
LINE IN Were a
Q |
Q101, 102 2Scisgi5
2SC2878A . MUTING CIRCUIT
LINE
OUT
MUTING
yi
(SWITCH
ON)
Output signal = e
Uu t
Raw
OUT
(corrected
=
Q2
TAPE signal ) a ra = 2SAI0I5
(R121) 2° tt Cet < MUTING CIRCUIT
PLAY BACK o> 6 “ (SWITCH ON)
Cc
(R ch)
LINE IN
LINE OUT
(E,EH, EB,EF,EK,EGA,Ei, XL)
D eis OUT
t
TAPE
S2
(INPUT
SELECTOR)
AT!
PLAYBACK (Q-— | roe ae
o
,
|
|
!
Recording
signal
:
.
:
: |
LO fo 6}o) 6fo) jo fo 5.5 | 0 o jo? Jo ty neoIu
Q0)—~(18)—(18)-—=(17) (16) (5) (14) (13) (12) (1!) 20)-—{i9) y 50/60Hz
ele] Lal | 25] 2 * ET
eee ee cr oe |
<I ra rai IC 201,202
E
M5229P
AC240V
BPF ie ; 50/60Hz
: ae ioe [EK] [XL]
| straight S| : \ : |
:
(
REC
MODE)
eR
RI
ie
ie
i
ce
a
RI
is
eR
ea
ca
=
=
=
oa 560 560
C)—{2)—{3) (4) (5) (6) 7) (8) (8) 010) O-2)—-B) 9) 5) OO) 2) 19) a el
ie) On 0 On 0 ce] re 0 0-8 fe} ce) me) O Q fe} re) ore Ke O (XA PA PE)
on -oO ~ N re) ~
SWITCH/JACK CIRCUIT ° Sor Weer oor Gate : : ars
©
SSA
a
Note
2:
ie
‘
“
ng
'
(VOLTAGE
a
1,
All
voltage
values
shown
in
circuitry
are
the
*(_)
Indicates
resistors
and
.
Son
<9
4
S
eee
patna
ae
standard
values
for
the
DC
electronic
circuit
capacitors
are
use
product
°
"8
78
:
3
&
F tester (high-impedance) with the ground point for [EGA] area. a | 25
taken as standard. Therefore, there may exist ¥
some errors in the voltage values, depending on i Pee
the internal impedance of the DC circuit tester.
2.—{_] Positive and Negative voltage supply line.
ACHIO™~ 127
" /220% 240V
DIO; DIO3 DIOS DIO? D109 oti! pada! CNZCORCFE 2 IF niga D104 D106 D108 DIO DI12 D114
(KNOB LED) Matt eo ene 50/60Hz
RD (A) LN Ly Ay je —D UTD SA) Sia We YA SOD Wo '
ay, ay \ay, a) ay, oy, WY WW ay, as, WY WY Sy,
160Hz 400Hz 2.5kHz 6.3kHz “IG kHz
6.3kHz 16kHz

SH-8028
Mi REPLACEMENT PARTS LIST
Notes:
1.
Part
numbers
are
indicated
on
most
mechanical
parts,
Please
use
this
part
number
for
parts
order.
2. Important safety notice: Components identified by A mark havespecial
characteristics important for safety. When replacing any of these components, use
only manufacturer's specified parts.
3. ® —marked parts are used for black only, while O —marked parts are for silver
type only.
4. Part other than © — and © —marked are used for both black and silver type.
5. Bracketed indications in Ref, No. columns specify the area. Parts without these
indications can be used for all areas.
_ The’ © ‘ mark is service standard parts and may differ from production parts.
. The parenthesized numbers in the column of description stand for the quantity
per set.
“OD
INTEGRATED _ ote |
1C101 AN6555
1C201, 202 M5229P
TRANSISTORS
2SC1815Y Transistor
oS 2SA1015Y Transistor
Q101, 102 2SC2878A-T Transistor
Diode
MA2150B
D4, 6~8 MA165 Diode
D5 MA167 Diode
D11~14 $VD1S2076A Diode
D101~114 LN260RCPP LED
TRANSFORMERS
T1 (M, MC] Z\ SLTK5i1—M Power
Transformer
T1 es | A. SLTK5i3—W Power
PE Transformer
T1 [other] Z\ SLTK5i2—W Power
Transformer
VARIABLE RESISTORS
EWAPW1J15G15
Variable
Resistor
SWITCHES
VR1~14
$1~3 SSHK62 input Selector
S4 Z\ SSH1021 Power Source
S5[XA, ae ZA, SSRK19 Voltage
PE Selector
[aarne [pone | oosenion
CABINET and CHASSIS PARTS
SBC666 Button, Power (1) 12 Z\ SJS9221—1 AC Outlet
SBCE666—3 Button, Power (1) ie XA, |
PA, PE
SUB215 Connection Rod, (1) 12 LZ\ SJS9223 AC Outlet
Power
a ee
[porno] Penne oecioion
CABINET and CHASSIS PARTS
SGYH8028—SM _ Front Panel Ass’y SUB91 Connection Rod, SJF3057N Terminal Board $JS50771DS Socket (7 Pin) (1)
aa ier Selector IN/OUT be SJS50471DS Socket (4 Pin) (1)
1 SGYH8028—SE Front Panel Ass’y = (1)
[other] 10 (M] A\ RJASYA—Y AC Cord (1) 14 SGPKH8028—KM Rear Panel Ass’y (1) 19] XA, SHR301 Clamper (1)
1 ® SGYH8028—KM Front Panel Ass’y (1) 10 Z\ SJA169 AC Cord (1) [M, MC] eX PE
([M, MC} [MC] 14 [E] SGPKH8028—KE Rear Panel Ass’y (1) 20 SHE185 Holder, P.C.B. (2)
1 ® SGYH8028—KE Front Panel Ass’y (1) 10 [EK] A, QFC1205M AC Cord (1) 14 [EGA] SGPKH8028—KG Rear Panel Ass’y (1) 21 [EK] SFEZQ34G01 Cord Cover (1)
[other] 10 [XL] AA SJAG23 AC Cord (1) 14 [EK] SGPKH8028—KK Rear Panel Ass’y (1)
RJA52YAK AC Cord 14 [XL] SGPKH8028—KL Rear Panel Ass’y (1) SCREWS
© SGXkK110—3U Sub Panel (1) 14[XA, SGPKH8028—KX Rear Panel Ass’y (1)
2 ® SGXKkK110U Sub Panel (1) SFDAB31E01—M AC Cord Ex a XTB3+ 8JFZ Tapping, ©®3 x8 (2)
[other] 14 [other] SGPH8028—KH Rear Panel Ass’y (1) ie XTB3+8J Tapping, ©3x8 (3)
3 © SBCK51-1 Button, Selector (3) N3 XTB3+ 16J Tapping, ©3 x 16 (1)
3 ® SBCKS51 Button, Selector (3) 11 RHR111 Bushing, AC Cord (1) ( 14-1 C SKL293 Foot (4) N4 XTBS3+8CFYR1 Tapping, ®3x8 (1)
[M, MC] N5 XTB3+ 10GFZ Tapping, ®3 x 10 (2)
SBWK27 Button, Control (14) 11 [EK] SHR129 Bushing, AC Cord (1) 15 © SKCK180S98 Cabinet (1)
SBZK33 Light Guide Plate (14) 11 [other] SHR127 Bushing, AC Cord (1) 15 ® SKCK180K99 Cabinet (1) N6 XTB3+ 8JFN Tapping, ©3x8 (3)
N6 XTB3+ 8JFZ Tapping, ©3x8 (3)
SH-8028 SH-8028
1
Mi EXPLODED VIEW
Ay Ge
N7
Front panel
Volume shaft
B
Light ae plate
ee
ee
<2 ye Insert with long leg
as (anode) down.
Fit the knob with gate hole side down.
C
D
E
[rerne[Ponne [besten
[reine [penne [Secon
CABINET and CHASSIS PARTS
CABINET and CHASSIS PARTS
16 $JS5719
16 $JS5433
Connector (7 Pin) (1)
Connector (4 Pin) (1)
(1)
SNE2095 — 4
SNE2095 —5
Cabinet (2)
Cabinet
2 N
@BO BO
17 SJT3709
17 SJT3415
Post (7 Pin) (1)
Post (4 Pin)
(1)
A2 [M]
A2 [MC]
A2 [EGA]
A2
{PA, PE]
A2 [other]
A3 [XA]
a oe
ACCESORIES
SJPK2202
SQFK10133
SQFK10134 Instruction Book (1)
SQFK10138 Instruction Book (1) SPGK220 Carton Box (1)
SQFK10135 Instruction Book (1)
SPGK237 Carton Box
SQFK10137 Instruction Book (1) P1 [EK] © SPGK222 Carton Box (1)
P1 [EF] SPGK223 Carton Box (1)
SJP5213—
SJP5215
19 For [XA,PA,PE] areas
L (Clamper)
N3 |
S5 For [XA,PA,PE] areas
(Voltage selector)
_
Ge
For
[M,MC,XA,PA,PE]
:
(AC
outlet)
21 For [EK] only
(Cord Cover)
[aetna [Panne | owsinion
PACKING PARTS
Connection Cord P1(M}] © SPGK254 Carton Box (1)
Pi [M] SPGK253 Carton Box (1)
Instruction Book SPGK252 Carton Box
@ O80
1 Plug, Adaptor (1) SPGK236 Carton Box
Plug, Adaptor (1)
SPGK219 Carton Box (1)
{other]
P2 SPSK97
P3 SPSK98
Pad (Left) (1)
Pad (Right) (1)
SPP725
SPPK48
P4
P4
Polyethylene Sheet (1)
Polyethylene Sheet (1)
BO
Printed in Japan
860312000 ® MS. TM
ey