Technics SH-8029 User manual

ORDER NO. HAD8606554A4
Service
Manual
Equalizer ff)
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
Part
Name
and
Description
Remarks
[PA] [PA, PE]
CABINET AND CHASSIS PARTS
SGYH8028—KE
SGXK110U SGXK110—2U 1
14 SGPKH8028—KX SGPH8029—KP 1
16 SJS5719
16
SJS5433
Deletion,
Connector
(4
pin)
J1
17
SJT3709
=—
|
Deletion,
Post
(7
pin)
J2
17
SJT3415
—
|
Deletion,
Post
(4
pin)
J1
18 — SJS50671DS Addition, Connector (6 pin) J4
20 SHE185 P.C.B. Holder
23
SHGK463
Addition,
Rubber
Spacer
|
4
|
24 SJT30443-V Addition, Socket (4 pin) J1
24 SJT30643—V | Addition, Socket (6 pin) 4 |
SJT30743-V Addition, Socket (7 pin) J2
SCREW
XTB3H10GFZ XTB3+10GFZ Tapping, @ 3x10
ACCESORY
SPGK219 SPGK272 Carton Box
RESISTORS
R123, 124 oa: ERDS2TJ222 Addition, 2.2k2 Resistor
PRysi26 | ~——SS—*dSCDS2T302_— | Addition, 3.3K Resistor | 2
P Rai [| CSC RDS2TIZ22 | Addition, 2.2k0 Resistor | 2
Panasonic Tokyo Office Matsushita Electric Tradnag Co., Ltd.
&
Matsushita Electric Trading Co., Ltd. P.O. Box 288 Central \esaka Japan
6th Floor, World Trade Center Bldg., No. 4-1, ;
Hamamatsu-cho 2-Chome, Minato-ku, Tokyo 105, Japan

@
CIRCUIT
BOARDS
e Change in switch/jack P.C.B.
SH-8028
REC OUT PLAYBACK
SWITCH /
JACK PC.B
*( _) Indicates resistors and
capacitors are use product
for [EGA] area.
Change
SH-8029
[Line
IN|
[LINE
OUT|
TAPE
REC
OUT
PLAYBACK
CONNECTOR
ry
=
PCB,
SWITCH /
JACK PC.B
From
cassette
deck
= an a am as as am ae an o”*

MH SCHEMATIC DIAGRAM
e Change in switch/jack Circuit
SH-8028 [PA]
Input signal
(source signal)
(L ch)
LINE IN (©
LINE OUT (©
REC OUT
TAPE
PLAY BACK
(R ch)
LINE IN
LINE OUT
eee OUT
TAPE
PLAYBACK
RWS JOOK
SH-8029 [PA, PE]
LINE OUT
REC OUT
TAPE
PLAY BACK
(R ch)
LINE IN
LINE OUT
REC OUT
TAPE AO
jsovrce = tape
PLAYBACK | * 05000
L_2
(ieee ,
©
7
[straight =———— EQ.
Sep
O00
Lt ——f-j-
one aeawen of oe ae ew,
CONNECTOR
CIRCUIT
wm as
Y— Additional
naw’

_SH-8029
Mi EXPLODED VIEW
e Change in rear panel
SH-8028
tt
Power transformer N3
S5 For [XA,PA,PE] areas
{Voltage selector)
_
fe
For
(M,MC,XA,PA
PE]
(AC
outlet)
21For (EK] only
{Cord Cover)
19 For {XA,PA,PE) areas
(Clamper)
SH-8029
Power transformer
Printed in Japan
860600400 ® TM
ae 870200450

Service
Manual
Stereo Graphic Equalizer
SPECIFICATIONS
Frequency response
(center position) :5 Hz~100 kHz, —1 dB
Maximum output
voltage :8 V (1 kHz, THD 0.01%)
Rated output voltage eV
Rated total harmonic
distortion :0.005% (20 Hz~20 kHz)
0.003% (1 kHz)
input sensitivity :1V
Signal-to-noise ratio : 100 dB (DIN 45 500)
:110 dB (IHF’A)
Maximum input
voltage :8 V (1 kHz)
Input impedance 733 k
Gain :0+1 dB
Channel balance (DIN 45 500)
250 Hz~6300 Hz :+0.5 dB
Channel separation (DIN 45 500)
GENERAL
Power supply
ORDER NO. HAD8602362C0
Equalizer
SH-8028
Color
(K) - +--+ Black Type
(S) ---- Silver Type
(K)(S)
(K}(S) | [MC] . Canada
(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
: AC 60 Hz, 120V
(For U.S.A. and Canada)
AC 50 Hz/60 Hz, 240 V
(For United Kingdom and Australia)
AC 50 Hz/60 Hz, 220 V
(For continental Europe)
AC 50 H2/60 Hz, 110 V—-127 V/
220 V-240V
(For other areas)
Power consumption :7W
Dimensions
(HxWxD) : 86 x 430 x 193.5 mm
(3-3/8 x 16-15/16” x 7-5/8"')
Weight : 2.1 kg (4.6!b)
Specifications are subject to change without notice
for further improvement.
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
‘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 Osaka Japan
Panasonic Tokyo Office
Matsushita Electric Tia ding Co., Ltd.
6th Floor, World Trade Center Bidg.,
No. 4-1, Hamamatsu-ci70 2-Chome,
Minato-ku, Tokyo 105, Japao-

SH-8028
Deutsch (German)
TECHNISCHE
(DIN 45 500)
Frequenzgang
(mittelstellung)
Maximalausgangs-
spannung
Nennausgangsspan-
nung
Nennklirrfaktor
Eingangsspannung
DATEN
*5Hz~100 kHz, —1dB
7:8 V (1 kHz, THD 0,01%)
71V
:0,005% (20 Hz~20 kHz)
0,003% (1 kHz)
:1V
Geraduschabstand : 100 dB (110 dB, IHF, A)
Maximaleingangs-
spannung :8V (1 KHz)
Eingangsimpedanz =: 33 kN
Verstarkung :0+1dB
Kanalsy mmetrie
250 Hz~6300 Hz :+0,5dB
Kanaltrennung 1kHz : 70d8
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 kOQ
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)
Tension de salida
maxima
Tension de salida de
régimen
-5 Hz~100 kHz, — 1 dB
:8 V (1 kHz, THD 0,01%)
:1V
Distorsi6n armonica totai
nominal
Sensibilidad de entrada
Relacién de sefial 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
:100 dB (110 dB, IHF’ A)
:8 V (1 kHz)
733 kN
:0+1 dB
:+0,5 dB
:70 dB
:+12dB~—12dB
(7 Regier, stufenlos verstellbar)
: 63 Hz, 160 Hz, 400 Hz, 1 kHz,
2,5 kHz, 6,3 kHz, 16 kHz
ALLGEMEINE DATEN
Stromversorgung : Wechselstrom 50 Hz/60 Hz, 220 V
(Fur Kontinentaleuropa)
Wechselstrom 50 H2/60 Hz,
110 V-127 V/220 V-240 V
(Fur andere Lander)
Frequenzgangregler
Mittenfrequenzen
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 I’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,

Hi
CONTENTS
-
_
SAFETY PRECAUTION .........-00000 ee eee 3 BLOCK DIAGRAM......... 0.0.00 eee eee eee 6
LOCATION OF CONTROLS........---..206. 3,4 CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM... 7,8
OPERATION
xc
ed.
oe
ORES
RRA
eS
ae
Ss
4
SCHEMATIC
DIAGRAM
...........000cc0
ee
ueeee
9,
10
DISASSEMBLY INSTRUCTIONS ............... 5 REPLACEMENT PARTS LIST................0005 11,12
RESISTORS and CAPACITORS......-...+----- 6 EXPLODED VIEW... . 0... cee eee ee eee eee 11,12
& SAFETY PRECAUTIONS (This “safety precaution” is applied only in U.S.A.)
Before servicing, unplug the power cord to prevent an electric shock.
Wheh 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.
OPRWN>
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 onmmeter 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 3MQ
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 Isolated from the chassis by design. These will read infinity.
Antenna
terminal
Exposed Exposed
metal metal
part part
Ohmmeter Ohmmeter
(Fig. A) (Fig. B)
Resistance = 3MQ—5.2MQ 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
63Hz
6.3kHz
160Hz
eine
zpeie
400HZz
|
Right
channel
1kHz
kHz
band
level
controls
controls
nga
(£12dB)
400Hz
25kHz|
©
160Hz
6.3kHz
63Hz
16kHz
Recording mode selector
{ m EQ, EE straight)
Equalizer switch
Power switch (.- on, B off)
(
=
on,
M
off)
input
selector
( m tape, J source)
ataere aan
sawae semper OansEE
wernth eomannaD aD
1 epee arene
ee Voltage selector
Line
input
For
[XA]
,[PA]
and[PE]
areas
AC outlet (Unswitched)
For [M] ,[MC] ,[XA] ,[PA] and
[PE] areas
Line output
Mi OPERATION
Input selectors: Select the sound source.
m@ ‘‘AV/aux": To use equipment connected to the
auxiliary input (‘‘AV/AUX”) terminals.
4] Loudness switch: “off’’
@ Tape-monitor selector: ‘‘tape 1/DA tape’”’ (Refer to note). @ “CD”: To listen to a compact disc.
(The “‘tape”’ indicator will be illuminated) Hm ‘tuner’ To listen to radio broadcasts.
@ “phono”: To listen to phono discs.
6] Balance control: ‘‘center position”
yy CD direct switch: ‘‘off’’
@
Tone
controls:
‘‘center
position”
To
listen
to
CD
direct:
‘‘on
©
Power
switch:
“on”:
p
Voiume
control:
“91”
Integrated
amplifier
(option)
® Begin the disc play or tune to the radio
broadcast.
7.) Adjust volume level.
fe} “on” (B_. =)
‘E) Adjust tone quality as desired.
WS SSS SSS a oul
ananapean penavinee (SH-8028)
I 1
To listen to corrected sound of phono discs or radio. a Set to Paar position.
To record corrected sound of phono discs or from radio.
To record the uncorrected sound of phono discs or from the radio. Be (m. B)
To listen to corrected sound from a tape deck. “tape” (HB _. =) Set to any position.
Press the equalization switch (equalizer) in to the “‘off’’ (m_— ) 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)
phono or tuner
oo. 0.0 8 0000-0 | O : 000 O
® If your amplifier has terminals (GRAPHIC EQ./EXTERNAL) for connection of other equipment, use of the recording selector is
unnecessary.

SH-8028
Mi DISASSEMBLY INSTRUCTIONS
Page
pt
taser
ae
6
Ref.
No
:
Ref.
No
How
to
remove
the
band
level
| DIAGRAM. .7,8 ate How to remove the cabinet ee
; 12229, 10 1 4 control volume P.C.B.
cage Geta Bie 11,12
1%
gists
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
gy Input selectors: Select the sound source.
Mm “AV/aux": To use equipment connected to the
auxiliary input (‘‘AV/AUX”") terminals.
wg “CD”: To listen to a compact disc.
@ ‘‘tuner” To listen to radio broadcasts.
B “phono”: To listen to phono discs.
B)
CD
direct
switch:
“oft”
ae
How
to
remove
the
front
pane!
To listen to CD direct: “on”
ee @ Remove the 2 screws (@, @)
@ The tabs with project (at 3partions)
from the front panel are engaged with
resistance test to
4) Loudness switch: “off”
5] Tape-monitor selector: ‘‘tape 1/DA tape” (Refer to note).
(The “‘tape”’ Indicator will be illuminated)
6) Balance control: ‘‘center position”
binet
part,
such
as
@
Tone
controls:
‘‘center
position”
ead between 3MQ
imately infinity to
fm Volume control: “9-1”
© Power switch: ‘‘on’-
@ Push the 11 tabs aside. (Q@~ @)
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
broadcast.
7.) Adjust volume level.
Sty Band level
volume P.C.B.
Front panel
fh ‘‘on” (B_. m)
iE) Adjust tone quality as desired.
@ Remove the 2 connectors {J1, J2) of front panel.
J1 (4pin)
—\ This unit
(SH-8028)
# How to fit the volume rod
Jipment should be
Front panel
Volume shaft Sn
Light guide plate LED
10 11 12
To listen to corrected sound of phono discs or radio. Set to any position.
ine! To record corrected sound of phono discs or from radio. “source” (m_. M1) “EQ” (Mm) How to remove the power su pply
controls P.C.B. and switch P.C.B.
To record the uncorrected sound of phono discs or from the radio. “straight” (m= B)
To
listen
to
corrected
sound
from
a
tape
deck.
“tape”
(M_.
m)
Set
to
any
position.
@
Remove
the
3
screws
(Q@~
@)
of
power supply P.C.B.
Press the equalization switch (equalizer) in to the ‘‘off’’ (m_. HM) position to listen to uncorrected sound, or when recording.
® Remove the 4 screws (@ ~ @) of
switch P.C.B.
NI
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]
V
Aut
aalBes
Loon
or
tuner
0
|
00
,
sie
selector)
o
OO
0
000
0
O
Jing mode selector
Q, B straight)
e If your amplifier has terminals (GRAPHIC EQ./EXTERNAL) for connection of other equipment, use of the recording selector is
rce) unnecessary.

‘Beer FE:
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 = 1000kQ.
Components identified by AY mark have special characteristics 5, The unit of capacitance is AF (microfarad), P = 10° uF
important for safety. When replacing any of these components —_§._ Bracketed indications in Ref. No. columns specify the area.
use only manufacturer's specified parts. Parts without these indications can be used for all areas.
Numbering System of Resistor Numbering System of Capacitor
Example Example
ERD 25 se J 101 ECKD 1H 102 Zz F
Type Wattage Shape Tolerance Value Type Volgage Value Tolerance Peculiarity
Tolerance
ERD : Carbon 10 : 1/8W
ERG: Metal Oxide | 1A: 1W : Electrolytic : 6. : K : +10%
2A : 2W : Ceramic : : : +80%, —20%
S1 : 1/2W : Ceramic : : M : 20%
: Semi-conductor : KC : 400V AC
e@ RESISTORS
[parne [Pena [vane
R1, 2 ERG1ANJ330
R3 ERDS2TJ222 221 K
R4 ERDS2TJ472 4.7K
R5 ERDS2TJ473 47K
R6 ERDS2TJ273 27K
R7 ERDS2TJ562 5.6K
R8 ERDS2TJ103 10K
RQ ERDS2TJ224 220K
Rit, 12 ERG2ANJ680 68
R101, 102 ERDS2TJ473 47K
ECKD1H223ZF 0.022
ECEA1EU221 220
ECEA1CU221 220
ECEA1EK4R7 4.7
ECEA0JU101 100
ECEA1EU101 100
ECKD1H223ZF 0.022
C21, 22 ECKD1H223ZF 0.022
C101, 102 ECEA1EK4R7 4.7
C103, 104 ECCO1H101K 4100P
R117, 118 ERODS2TJ181
R119, 120 ERDS2TJ102
[EGA] only
C203, 204 ECEA1HK3R3
C205, 206 ECFTD683KXL
C207, 208 ECEA1HK010
C209, 210 ECFTD333KXL
C211, 212 ECEA1HKR47
C213, 214 ECFTD123KXL
C215, 216 ECEA1HKR22
C217, 218 ECFTD392KXL
C219, 220 ECFTD473KXL
C221, 222 ECFTD182KXL
R121, 122 ERDS2TJ102
[EGA] only
R201, 202 ERDS2TJ222
R203, 204 ERDS2TJ222
R205, 206 ERDS2TJ222
R103, 104 ERDS2TJ102
R105, 106 ERDS2TJ473 47K
R107, 108 ERDS2TJ104 100K
R109, 110 ERDS2TJ473 47K
R111, 112 ERDS2TJ472 4.7K
R113, 114 ERDS2TJ102 1K
R115, 116 ERDS2TJ104
R207 ERDS1TJ681
C105, 106 ECCD1H101K
C107, 108 ECEA1EK4R7
C109, 110 ECCD1H151K
[EGA] only
C111, 112 ECCD1H151K
[EGA] only
C201, 202 ECKD1H471KB 470P
C223, 224 ECFTD333KXL
C225, 226 ECKD1H681KB
C227, 228 ECFTD123KXL
C229, 230 ECKD1H331KB
C251, 252 ECFTD333KXL
C253, 254 ECKD1H223ZF
M@ BLOCK DIAGRAM
Buffer IC201(202)
MS229P
B.P.F,
adh assaueee? Phono signal lines
wer t- -B)
Df}
FED gio
= Muting
Q1,2 {>
sree “2
ON. canssecinaniesscntaaned AA pricetnineeietretieteditevasassesened\ AA pies
Dain eeimeaeienais ar - "
+ off
Si-i l
Rec mode}: !
“feo $3
Source. 5 EQ
< REC OuT | Gam straight |
" IC 101172)
| AN6555
=
|
|
|
Band level
1
!
LINE IN PHL rerirrrereerenmenses -12d8 controls 15
~ SS
aves oe
Lidge | |
| |
vr Oy emcees
63H: -~-- ~~ ---- I6kHz

SH-8028 SH-8028
1 2 3
@ CIRCUIT BOARDS AND WIRING CONNECTION DIAGRAM
NOT USED [LINE IN] [LINE OUT |
fee HL eS IET ERY emiandire REC OUT PLAYBACK
[EGA] [Ei]and [XL] areas [PA] and [PE] areas [XA] [PA] and[PE] areas only
A ( UNSWITCHED) ry
oe eee
SWITCH/
JACK PC.B
* ( -) Indicates resistors and
BLK
capacitors
are
use
product
BLU
for
[EGA]
area.
. SS ee a 7
|{M, MC]... AC120V, 60Hz |
[E] [EH] [EB] .. .AC220v, 50/60Hz_
j (EF] [EGA] [Ei]
j{EK] [XL] ..... AC240V, 50/60Hz
j [XA] [PA] [PE] ...AC110 ~ 127
/220~ 240V,
50/60Hz
Lee et aes ecg ee J
Cc POWER
SUPPLY
P.C.B
D
|
(SI)
|
s2)
|
($3)
REC MODE TAPE EQUALIZER
INPUT SELECTOR
E
F
(63Hz)
(IGOHz)
(400Hz)
(I
kHz)
(2.5kHz)
(6.3kKHz)
(16kHz)
(63Hz)
{I60Hz)
(400Hz)
(IkHz)
(2.5kHz)
(6.3kKHz)
(i6kKHz)
LEFT CHANNEL i RIGHT CHANNEL
Q!
Q2
IC20I
Qlo2
aQiol
IC202
IC1Ol

SH-8028
1 2 3 4 5 6 7 8
|| SCH EMATIC DIAG RAM (This schematic diagram may be modified at any time with the development of new technology)
Note 1: _
1.
$1:
Recording
mode
selector
in
“EQ”
3.
$3:
Equalization
switch
in
‘‘on’’
position.
5.
$5:
Voltage
selector
in
‘’220
~
240V"
position
—
K
position.
(
=;€Q,
M
Straight)
(=m
;on,
M
;off)
(For
[XA],
[PA]
and
[PE]
areas)
(M,
MC]
2. $2: Input selector in ‘source’ position. 4. $4: Power switch in ‘‘on” position.
(=
;tape,
M
;
source)
(™
;on,
@
;off)
:
3
1C1Ol
eee spa laet the oir ean 3 e i ea ae AN6555 ms ° &
;
ia
BUFFER
AMP
s
y
>
° eo xh
° @ Ni
Input signal
(source
signal)
°
oe
a
B (L ch) z S4
an ( POWER)
LINE
IN
6
Q|
Q101,
102
°
2Scisi5
LINE OUT 2SC2878A a: . MUTING CIRCUIT
MUTING °8 a (SWITCH ON)
Output signal e
iss
OUT
(corrected
Q2
TAPE signal): oe ee : x 2SA 1015
[ (R121) soe ne + ¢ MUTING CIRCUIT
PLAY BACK aS °e ¢ (SWITCH ON)
Cc
(R ch)
LINE IN
LINE OUT O-=— e
(E,EH, EB, EF, EK,EGA,Ei, XL)
D re ouT ©
a
TAPE
—
|
Pe
Pee
poy
soe
|
(INPUT
SELECTOR)
Atl
PLAYBACK
©-——
ok
ieee
ase
a
Recording
signal
;
$f
7 3
;
i:
o
|
fo
o
jo fo
fo
;
oo
Jo®To
'
|
Pct
e)—(18)
(18)
(7)
+1)
15)
(1.9)
(13)
2)
)
(4)
(13)
12)
a
50/60Hz
|
|
1
Lede!
El
|
38
:
Eee
|
:
|
Kt,
te
IC
201,
202
4
m4
oe
ao
.
i
.
=
=
M5229P
SI
<
A
AC240V
ee
:
BPF
i
50/60Hz
,
:
47K
47K
ee
:
Si
:
D
.
.
al
Wewesesee:
6.0.
ee
Lenser
560
O-2)-O--)
$9)
-—)-©)-@)
9)
OA)
-)-)-)-O
-) 9)
9)
e3|°
[onl
feel?
jaar
psp
f°
ea
el!
(XA,
PA,PE)
_
°
-~oO
=
N
SWITCH/JACK
CIRCUIT
°
So
Ss
ne
Se
oe
°
S
’
,
©
SSA
2
Note
2:
i
7
«
!
rn
(VOLTAGE
o
1.
All
volta
i
i
j
:
.
=
el
5.1
TI
SELECTOR)
ut
Al
voltage
values
shown
in
cauity
ae
he
(indian
resistorsard
ay
go
sayiewer
|
#
ree
Ie
SIEeOT
capacitors
are
use
product
fs
ou
e
tester
(high-impedance)
with
the
ground
point
for
[EGA]
area.
|
<5
taken
as
standard.
Therefore,
there
may
exist
some
errors
in
the
voltage
values,
depending
on
il
Peewee
“
5
the
internal
impedance
of
the
DC
circuit
tester.
{
we
|
|
le
ie
B
B
"
BR
BR
BB
B
B
2
|
pen
ay
oe
;
e
1
|
Positive
and
Negative
voltage
supply
line.
5
ACHIO-W
127
t
4
4220
~
240V
Signal
line
(Left
channel)
D101
DIO3
D105
0107
D109
Dit
DUIS
eaee
ea
eine
D104
0106 D108
DI10
pile
pila
tags
et
50/60Hz
iy
ix
ISN
>
S
sn
>
SveN
SPN
SPN
Ya
YO
ONES
7
'
ay,
Na, Nay
Nay,
PH
ay, ay,
Sy
S
Sy Ny
ty
2)
63Hz 1GOHz 400Hz UkHz 2.5 kHz 6.3kHz “16 kHz
400Hz
160Hz IkH2 2.5 kHz 6.3kHz '6kHz
[opener eee a eee ie

SH-8028
Wi 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.
6. The ‘’ © ‘' mark is service standard parts and may differ from production parts, ‘
1
SH-8028 SH-8028
Mi EXPLODED VIEW
al Ga
N7
7. The parenthesized numbers in the column of description stand for the quantity
per set.
ee
INTEGRATED CIRCUITS
iC101 AN6555 IC
10201, 202 M5229P Ic
TRANSISTORS
Q1 2SC1815Y Transistor
Q2 2SA1015Y Transistor
2SC2878A-T Transistor
MA2150B Diode
D4, 6~8 MA165 Diode
D5 MA167 Diode
D11~14 $VD1S2076A Diode
D101~114 LN260RCPP LED
TRANSFORMERS
T1 (M, MC] ZA, SLTK5i1—M Power
Transformer
T1 pe ere ZA, SLTK5i3-—W Power
PE Transformer
T1 [other] ZA, SLTK5i2—W Power
Transformer
VARIABLE RESISTORS
EWAPW1J15G15 = Variable
Resistor
SWITCHES
VR1~14
$1~3 SSHK62 Input Selector
$4 Z\ $SH1021 Power Source
S5[XA, En ZA\ SSRK19 Voltage
PE Selector
[aetna [pave | tewiion
CABINET and CHASSIS PARTS
1 @
[M, MC]
1 © SGYH8028—SE
[other]
1 ®© SGYH8028—KM
(M, MC]
1 ® SGYH8028—KE
[other]
SUB91
SGYH8028—SM_ Front Panel Ass’y (1)
Front Panel Ass’y (1)
Front Panel Ass’y (1) SJA169
Front Panel Ass’y (1)
SJAG23
Sub Panel
Sub Panel (1)
SGXK110—3U
SGXK110U
Button, Selector (3)
Button, Selector
SBCKS51—1
SBCKS51
RHR111
Ls)
GO BO
SHR129
SHR127
Button, Control (14)
Light Guide Plate (14)
SBWK27
SBZK33
11 [other]
12 A
M, XA, |
PA, PE
AV $JS9223
Button, Power
Button, Power
SBC666
SBC666-3
Connection Rod, (1)
Power
7 SUB215
RJASYA—Y
QFC1205M
RJAS2YAK
SFDAB31E01—M
S$JS9221—1
Knob
Light guide plate
Volume shaft
LED
—“€
a
\ ee
ae a ae
ss Insert with long leg
Re (anode) down. it
Fit the knob with gate hole side down.
[aane [rane | oorrmion |
CABINET and CHASSIS PARTS
9
Connection Rod, (3)
Selector
AC Cord (1)
AC Cord (1)
AC Cord (1)
AC Cord (1)
AC Cord (1)
AC Cord (1)
Bushing, AC Cord
Bushing, AC Cord
Bushing, AC Cord
AC Outlet
AC Outlet
Bees oe
[aetna [pean] oneinion |
CABINET and CHASSIS PARTS
13
SJF3057N
SKCK180S98
SKCK180K99
16 $JS5719
16 $J$5433
17 SJT3709
17 SJT3415
Front panel
Terminal Board (1) $JS50771DS Socket (7 Pin)
Cabinet
Cabinet N6 © XTB3+8JFN Tapping, 3x8
N6 ® XTB3+8JFZ Tapping, 3x8
Connector (7 Pin) (1)
Connector (4 Pin) (1) N7 © SNE2095~—4 Cabinet
® SNE2095~—5 Cabinet
Post (7 Pin) (1)
Post (4 Pin)
[reine [rane [beni
CABINET and CHASSIS PARTS
18
(1)
IN/OUT 18 $JS50471DS Socket (4 Pin) (1)
A2 [M]
14 SGPKH8028—KM Rear Panel Ass’y (1) a oN ] SHR301 Clamper (1) A2 [MC]
[M, MC] , A2 [EGA]
14 [E] SGPKH8028—KE Rear Panel Ass’y (1) 20 SHE185 Holder, P.C.B. (2) A2
14[EGA] SGPKH8028—KG Rear Panel Ass’y (1) 21 [EK] SFEZQ34G01 Cord Cover (1) [PA, PE]
14 [EK] SGPKH8028—KK Rear Panel Ass'y (1) A2 [other]
14 [XL] SGPKH8028—KL Rear Panel Ass’y (1) SCREWS
14[XA, SGPKH8028—KX Rear Panel Ass’y (1)
PA, PE; N1 XTB3+8JFZ Tapping, ©®3 x8 (2)
14 [other] SGPH8028—KH Rear Panel Ass’y (1) N2 XTB3+8J Tapping, ®3x8 (3)
N3 XTB3+ 16J Tapping, ©®3 x 16 (1)
( SKL293 Foot (4) N4 XTBS3+8CFYR1 Tapping, ®3x8 (1)
N5 XTB3+ 10GFZ Tapping, ®3 x 10 (2)
va
SJPK2202
SQFK10133
SQFK10134
SQFK10138
SQFK10135
SQFK10137
SJP5213—1
SJP5215
N3
S5 For [XA,PA,PE] areas
(Voltage selector)
21 For [EK] only
(Cord Cover)
Connection Cord
Instruction Book
Instruction Book
Instruction Book
Instruction Book
Instruction Book
Plug, Adaptor
Plug, Adaptor
= oe
feat
[rene [penne | ecrnion
ACCESORIES
Al
(2)
(1)
(1)
(1)
(1)
(1)
(1)
P41 [M]
P1 [M]
[other]
P2
P3
P4
P4
SQ
AG 18
i
19 For [XA,PA,PE] areas
(Clamper)
G
O
®
BO
(AC outlet)
[aarne [penne [besten
PACKING PARTS
SPGK254
SPGK253
SPGK252
SPGK220
SPGK237
SPGK222
SPGK223
SPGK236
SPGK219
SPSK97
SPSK98
SPP725
SPPK48
12 For [M,MC,XA,PA,PE]
Carton Box (1)
Carton Box (1)
Carton Box
Carton Box
Carton Box
Carton Box (1)
Carton Box (1)
Carton Box
Carton Box
Pad (Left) (1)
Pad (Right) (1)
Polyethylene Sheet (1)
Polyethylene Sheet (1)
Printed in Japan
860312000 ®MS, TM