Technics SU-8022K Service Manual
U-S022!X
• CHANGE
OF
PARTS
LIST
(0), (OG), (XGH), (XE), (XSW) ,(EB)
Notes:
This
parts
list
included
only
the
change
of
the
model
SU-8022
parts
list_
Ref.!
Change
of
Part No.
I
Part Name & Description
No-l
SU-8022
..
SU-8022K
i
CABINET
and
CHASSIS
PARTS
1 I S8NS13
S8NS33
I Knob. Volume Control
I
,
I Knob,
Bass,
Treble, Balance &
2 , SBN815
S8NS35
i
I
Input
Selector
Switch
3
i
SGWUS022D
SGWU8022KD
i Panel, Front Ass'y 18lack)
4
i
SBD21
S8D21-1
I Knob, Loudness,
Rec
Mode, Tape
,
I
MOnitor
Switch
5
i
SHR5037
! SHR5037-1 1 Spacer, Loudness
Switch
6
I
SHR5043
!
SHR5043-1
!
Spacer
Rec
Mode,
Tape
Monitor
I Switch
9 S8C211
i
,Button,
High Filter, Subsonic
I
I
S8C211-1
I Filter
and
Speaker Switch
13
I
S8C209
I S8C209-1
!
Button.
Power
Switch
!
SGP1790A
[01
I
i
SGPUS022D
[XE,
XGH,
I
i
I SGP17908
[01
I
Rear
Panel
20
I
XGF, DG,
E81
I
i
[xALI
!
SGPUB022L
SGPUB022KD [DG, XGH,
i
Rear
Panel, SGP17908
with
I
SGPUB022W
[XSWI
E8,XEI
I
Name
Plate ISGT20150)
I SGP1790-1A
[X,
XAI
I SGPU8022KW
[xSWI
I.Rear Panel, SGP17908
with
Name
Plate ISGT2061
0)
I
RJA23ZC [D, XGH, XGF, : RJA23ZC [D, DG,
E8,
I
AC
Cord,
with
Plug
,
23
I
EB,DG,XSWI
XGH,XSWI
RJA45ZC
[X
El I
,
SJAll1
[X,
XAI
i RJA45ZC
[XEI
AC
Cord
i
QFC1207M
[xALI
I
i SHR127
I SHR127 !
;
[0,
DG, XGH, E8,
xswl
8ushing,
AC
Cord
24 i SHR129
[xEI
only i SHR129
IXEl
:
Bushing,
AC
Cord
I SKA 10676
SKA10677[D.
DG,XGH,EBiI
Cabinet IBlack)
25
I SKAU8022E
[XE,
xswl
SKAU8022KE
[XSW, XEI ! Cabinet IBlack)
SCREWS
and
WASHERS
~
I XTB4+8FFN
XTB4+SFFZ
I Screw, Cabinet M'tg
~i
XTB3+8BFN XTB3+SFFZ I Screw, Cabinet M'tg
PACKING
PARTS
:
SPS2177
P2
1
SPS2177-1
[XALI
only
SPS2177
I
Pad,
Left Side
l
SPS2179
i SPS2179
i
P3 I SPS2179-1
[xALI
only
i
Pad,
Right
Side
SPG2077 [01
I
!
I
SPG2079
I
!
[XE,XGH,EB,DG.XSWI
P5
i
SPG20Bl
[X,
XAI
I SPG20S5
Carton
Box
I SPG2083
[xALI
I
SPG20B7
[XGFI
!
P6
1
SQF10199 [D, XGH,
I SQF10199
Instructions
Book,
Printed
Matter
XGF, EB, DG,
xswl 1 [0,
DG, XGH, EB,
xswl
I
SQF10201
I SQF10201
[XEI
[,nstructions Book, Printed Matter
[XE,
X,
XA,
XALI
I
Notes:
ID)
and
lOG)
are available in
Scandinavia
and
European
only.
(XGH)
is
available in
Holland
only.
(XE)
is
available in
United
Kingdom
only.
(XSW)
is
available
in
Switzerland
only.
(EB)
is
available in
Belgium
only.
Printed
in Japan
7902-6S00G
0·
·
..
t:~.
S
ORDER!.NfY:SD7902-1!i·-
,
..
. • "
M··"':
. . .
.•.
,.~--
..
.
eMce
-:
anua
SU-8022K
Stereo I ntegrated Amplifier
SU-80:22
(0), (OG), (XGH), (XGF),
(EB),
(XE), (XSW),
(X),
(XA),
(XAL)
SU-8022K
(0), (OG), (XGH),
(XE),
(XSW) , (EB)
'~~models
SU-S022
(0,
DG)
and
SU-8022K
ID,
DG)
,re
available
in
Scandinavia
and European
only.
:The
models
SU-8022
IXGH)
and
SU-S022K
(XGH)
are
available
in
Holland
only.
•
The
model
SU-S022
(XGF)
is
available in France
only.
•
The
model
SU-8022
(ES)
and
SU-8022K
(ES)
are
available
in
Belgium
only.
•
The
models
SU-S022
(XE)
and
SU-8022K
(XE)
are
available
in
United
Kingdom
only.
•
The
models
SU-8022
(XSW)
and
SU-8022K
(XSW)
are
available
in
Switzerland
only,
•
The
models
SU-S022
(X,
XA)
are
available in Asia
Latin
America,
Middle
East and
Africa
only.
'
•
The
model
SU-S022
(XAU
is
available in Australia
only.
TECHNICAL
SPECIFICATIONS
[DIN
45
500]
Specifications
are
subject
to
change
without
notice
for
further
improvement.
AMPLIFIER SECTION
20
Hz -20
kHz
continuous
power
output
both
channels
driven
40
Hz
-16
kHz
continuous
power
output
both
channels
driven
2 x 40 W
(40),2 x 35
W (SO)
2 x 35W (SO)
1
kHz
continuous
power
output.
both
channels
driven
Power
bandwidth
both
channels
driven.
-3
dB
Total
harmonic
distortion
rated
power
at
20
Hz ~ 20
kHz
rated
power
at
40
Hz -16
kHz
rated
power
at 1 kHz
half
power
at
20
Hz ~ 20
kHz
half
power
at 1 kHz
-26
dB
power
at 1 kHz
SOmW
power
at 1 kHz
Intermodulation
distortion
2 x
45 W (4D1,
2 x
38 W (SDI
5
Hz
~
30
kHz
(4D)
5
Hz ~ 30
kHz
(SDI
0.05%
(40),0.03%
(SO)
0.05%
(40),0.03%
(SO)
0.05%
(401.
0.03%
(SD)
0.02%
(SDI
0.008%
(SDI
0.15%
(40)
0.2% (4D1
rated
power
at
250
Hz: a kHz = 4:1.
40
0.05%
rated
power
at
60
Hz: 7 kHz = 4:1.
SMPTE.
aD 0.03%
ReSIdual
hum
& noise
0.6
mV
(0.6
mV,
IHF)
Damping
factor
16
(4D),
32
(SDI
Input
sensitivity
and
impedance
PHONO
TUNER.AUX
TAPE
1.
PLAYBACK
PHONO
maximum
input
voltage
(1
kHz.
RMS)
Technics
2.5
mV/47
kO
150
mV/27
kO
lS0
mV/33
kO
150
mV
SIN
rated
power
at
40
PHONO
TUNER.AUX
72
dB
(IHF,
A:
80 dB)
S6
dB
(IHF,
A:
97
dB)
-26
dB
power
at
40
PHONO
62 dB
TUNER.
AUX
63
dB
50
mW
power
at
40
PHONO
62 dB
TUNER.AUX
62dB
Frequency
response
PHONO
R I
AA
standard curve
30
Hz ~ 15
kHz,
±O.S
dB
TUNER.
AUX.
TAPE
20
Hz ~ 20
kHz,±0.5
dB
Tone
controls
High
filter
Subsonic
filter
BASS
TREBLE
10
Hz
~50
kHz,
-1
dB
50
Hz,
+10
dB
~-10
dB
20
kHz,
+10
dB
~-10
dB
7
kHz,
-6
dB/oct.
Loudness
switch
(volume
at
-30
dB)
Output
voltage
and
impedance
REC
OUT
30
Hz,
-6
dB/oct.
50
Hz,
+9 dB
150
mV
30
mV/S2
kO
± 1.0
dB
55
dB
330
mV/3300
4~160
8~160
REC/PLAY
Channel balance
(250
Hz
~6300
Ht).
AUX
Channel
separation
at 1 kHz
AUX
Headphones
output
level
and
impedance
Load
impedance
MAIN
or
REMOTE
MAIN + REMOTE
GENERAL
Power
consumption
Power
supply
(50
Hz/60
Hz)
Dimensions
(W x H x
D)
Weight
400W
11
OV
/120V
/220V
/240V
430
x 97 x
240
mm
(
16-29/32"x3-13/16"x9-7/16")
5.4
kg
(11.9 Ib.)
Matsushita
Electric
Trading
Co.,
Ltd_
PO.
Box
288, Central Osaka
Japan
U-B022/K
TECHNISCHE OATEN
[DIN 45 500]
Spezifikationen konnen
infolge
von Verbesserungen oh ne
Ankundigung
geiindert werden.
VERSTARKERTEIL
Dauertonleistung bei
20
Hz
-
20
kHz
beide Kaniile zusammen ausgesteuert
Dauertonleistung bei
40
Hz -16
kHz
beide Kaniile zusammen ausgesteuert
Dauertonleistung bei 1
kHz
beide Kaniile zusammen ausgesteuert
2x
35W
(SO)
2x
40W
(40)
2 x
35 W (So)
2 x
45
W
(4D),
2 x 38 W (SO)
Leistungsbandbreite
beide Kaniile zusammen ausgesteuert,
-3
dB
5 Hz
-30
kHz
(40)
5 Hz - 30 kHz (SD)
Harmonische Verzerrungen
Nennausgangsleistung bei
20
Hz -
20
kHz
0,05%
(4D)
0,03%
(So)
Nennausgangsleistung bei
40
Hz
-16
kHz
0.05%
(40),0,03%
(So)
Nennausgangsleistung bei 1
kHz
0,05%
(4D),
0,03% (SO)
Halber Ausgangsleistung bei
20
Hz -20
kHz
0,02%
(S
D)-
Halber Ausgangsleistung bei 1
kHz
O,OOS%
(S
D) _
-26
dB
Ausgangsleistung bei 1
kHz
0,15%
(40)
50
mW Ausgangsleistung bei 1
kHz
0,2%
(4D)
Intermodulationsverzerrung
Nennausgangsleistung bei
250
Hz: 8 kHz = 4:1,
4D
0,05%
Nennausgangsleistung bei
60
Hz: 7 kHz = 4:1,
SMPTE
8D
Brummen & Rauschen
Diimpfungsfaktor
Eingangsempfindlichkeit & Impedanz
0,03%
0,6
mV
(0,6
mY,
IHF)
16
(40),
32 (SO)
PHONO 2,5
mV
/47
kD
TUNER,AUX
150mV/27kD
TAPE
1,
PLAYBACK
lS0
mV/33
kD
PHONO Maximale Eingangsspannungen
(1
kHz
RMS) 150
mV
Fremdspannungsabstand
Nennausgangsleistung bei 4 D
PHONO
72
dB
(lHF,
A:
SO
dB)
TUNER,
AUX
S6
dB
(lHF,
A:
97
dB)
-26
dB
Ausgangsleistung bei
4D
PHONO
62
dB
TUNER,AUX
63dB
50
mW Ausgangsleistung bei
4D
PHONO
62
dB
TUNER,AUX
62
dB
Frequenzgang
PHONO
RIAA
Standardkurve
30
Hz-15
kHz,±O,S
dB
TUNER,
AUX,
TAPE
20
Hz-20
kHz,±0,5
dB
10
Hz
-50
kHz,
-1
dB
BASSE
50Hz,+10dB--l0dB
HOHEN
20kHz,+10dB--l0dB
Unterschallfilter
30
Hz,
-6
dB/oct.
Klengragler
Hochton
filter
7
kHz,
-6
dB/oct.
Gehorgerechte
Lautstiirkekonektur
(Lautstiirke
bei
-30
dB)
AusgangtlPllnnungen & Impedanz
REC
OUT
REC/PLAY
Kanalabweichung
(250
Hz
-6300
Hz),
AUX
Kanaltrennung bei 1
kHz,
AUX
Kopfhorerpagel
und
Ausgangsimpedanz
Lautsprecher·Ausgangsimpedanz
MAIN
oder
REMOTE
MAIN
und
REMOTE
ALLGEMEINE OATEN
50
Hz,
+9
dB
150mV
30
mV/S2
kD
±l,OdB
55dB
330
mV/330D
Leistungsaufnahme
400
W
Netzspannung umschaltbar
(50
Hz/60
Hz)
110V/120V/220V/240V
Abmessungen (B x H x
T)
430
x 97 x
240
mm
Gewicht
5.4
kg
CARACTERISTIOUES TECHIOUES
[DIN 45 500]
Sujet a changement
sans
prElaris.
PARTIE AMPLlFICATEUR
Puissance de sortie
continue
de 20
Hz
- 20
kHz
les
deux canaux en
circuit
avec distorsion
Puissance de sortie
continue
de
40
Hz -16
kHz
les
deux canaux en
circuit
avec distorsion
Puissance de sortie
continue
a 1
kHz
les
deux canaux en
circuit
avec distorsion
Largeur de bande de puissance
2 x
35 W (So)
2 x 40 W
(4D)
2 x
35W
(SD)
2 x 45 W
(4D)
2 x 38 W (SO)
pour
I'ensemble des canaux excites,
-3
dB
5 Hz -
30
kHz
(4D)
5 Hz - 30 kHz
(So)
Distorsion
harmonique
totale
pour
la puissance mesuree a 20
Hz
- 20
kHz
0,05%
(40)
0,03% (SO)
pour
la puissance mesuree a 40
Hz
-16
kHz
0,05%
(4D),
0,03%
(Sm
pour
la puissance mesuree a 1
kHz
0,05%
(40),0,03%
(SD)
pour
la demi'puissance mesuree a
20
Hz -20
kHz
0,02% (SO)
pour la demi·puissance mesuree
a 1
kHz
O,OOS%
(So)
pour
une
puissance mesuree de
-26
dB, 1 kHz
0,15%
(4D)
pour
une
puissance mesuree de
50
mW, 1 kHz
0,2%
(4D)
Distorsion
d'intermodulation
pour
la puissance mesuree a
250
Hz: 8 kHz = 4:
1,
4D
0,05%
pour
la puissance mesuree a
60
Hz: 7 kHz = 4:1,
8D
0,03%
Tension residuelle de
bruit
0.6
mV
(0.6
mV,
I H
F)
Facteur d'amortissement 16
(4D),
32
(SO)
Sensibilite
& impedance d'entree
PHONO
TUNER,AUX
TAPE
1,
PLAYBACK
2,5
mV/47
kD
150mV/27kD
lS0
mV/33
kD
Voltage d'entree
maximum
(PHONO, 1
kHz,
RMS)
Repport
signal/bruit
150mV
pour
la puissance nominale,
4D
PHONO
TUNER,AUX
pour
une sortie de
-26
dB,
4D
72
dB
(lHF,
A:
SO
dB)
S6
dB
(iHF,
A:
97 dB)
PHONO
62dB
TUNER,AUX
63dB
pour
une sortie de
50
mW,
4D
PHONO 62 dB
Reponse de frilquence
PHONO
TUNER,AUX
TUNER,AUX,TAPE
62dB
eou
rbe standard R
IAA
30
Hz -
15
kHz,
±O,S dB
20
Hz -20
kHz,
±0,5
dB
10
Hz
-50
kHz,
-1
dB
Reglage de la
tonalite
BASS (graves)
50
Hz,
+10
dB
--10
dB
TREBLE
(aigus)
20kHz,+10dB--l0dB
Filtre
subsonique
30
Hz,
-6
dB/oct.
Filtre
haut
7
kHz,
-6
dB/oct.
Correction
physiologique (volume a
30
dB)
50
Hz,
+9
dB
Tension de sortie
& impedance
REC
OUT
150
mV
REC/PLAY
30
mV/S2
kD
Equilibrage de canaux (250 Hz -
6300
Hz),
AUX
± 1
,g
~~
separation des canaux A!-,X 1
kHz
. 5 D
Niveau du casque
et
impedance de sortie
330
mV
/33g
D
Impedance de charge
MAIN
ou
REMOTE
-4s~
~6D
MAIN
et
REMOTE-
GENERALlTES
Consommation
Alimentation
(50
Hz/60
Hz)
Dimensions
(L
x H x Pr)
Poids
400W
110V
/120V /220V
/240V
430 x 97-x240:mm
5:~g
• CONTENTS
LOCATION
OF
CONTROLS,
..................
3-4
NOTE
...................................
4
HOW
TO
REMOVE
THE
CABINET,
BOTTOM
BOARD
AND
FRONT
PANEL
..........•..........
4-5
BEFORE
STARTING
THE
REPAIRING
...............
5
HOW
TO
REMOVE
THE
POWER IC
....••............
5
PRINTED
CIRCUIT
BOARD
WIRING
VIEW
.........• 6 -8
SCHEMATIC
DIAGRAM
.•.......•..........
9
-12
BLOCK
DIAGRAM
OF
INTEGRATED
CIRCUITS
........
12
• LOCATION
OF
CONTROLS
Speakers
S'·lItf'h
.
....<
Power
Bass
Selector switch
(tuner - phono -
Ba
I
""""'
__
Treble
REC/PLAY (DIN
Tape deck
1-EPLAYn""
.. ,,---,
REC
Grou
-E
HO
Input TUN
AUx-----'
TERMINAL
GUIDE
OF
TRANSISTOR
& IC
............
12
REPLACEMENT
PARTS
LIST
(Electric
Parts)
...........
13
BLOCK
DIAGRAM
...........................
14
REPLACEMENT
PARTS
LIST
(Cabinet and Chassis Parts)
....
14
EXPLODED
VIEWS
.......................
15 -16
REPLACEMENT
PARTS
LIST
(Accessories and
Packing Parts)
............................
17
PACKINGS
...............................
17
ACCESSORIES
.............................
17
CHANGE
OF
PARTS
LIST
......................
18
ubsonic filter
(.
off
.-on)
Volume
Tape
monitor switch
(tape 1 - source - tape 2)
Recording mode switch
(tape 1
~
2 - source - tape 2
~
1)
udness switch
Voltage adjuster
AC
outlets
circuit protection fuses
* This
photo
shows only
the
products
for
(X) and (XA).
*
The
products for
other
destinations
except
(X) and (XA) are
not
equipped with AC outlets.
"022/K
SU-S022/K
·
...
12
·
...
13
·
...
14
·
...
14
.15~16
·
...
17
·
...
17
·
...
17
·
...
18
2 ~ 1)
Jtlets
Left
ch.
power amplifier I
• NOTE
main Ctmplifier
ci
Right
ch.
power amplifier
le
Equalizer
amplifier circuitry
The
unit
is
provided
with
the speaker
circuit
protection
fuses at the right and
left
channels respectively. The fuse
is
to
prevent the power IC
from
destruction, should the speaker terminals
be
short-circuited.
Accordingly,
if
the
unit
fails
to
function
upon
completion
of
the speaker connections, check the speaker
circuit
protection
fuses
first
of
all
for
possible
blowing.
• HOW
TO
REMOVE THE CABINET, BOTTOM BOARD AND FRONT PANEL
How
to
remove the cabinet
1.
Remove the 4 setscrews
(CD
~
@ in Fig.
1)
on the side and 4 setscrews
(@~
® in Fig. 2) on the back
of
the cabinet.
2.
Shift
the
cabinet backward
and
lift
it
upward.
(Arrow
G in Fig.
1)
Fig. 1
How
to
detach the bottom board
1.
Remove the 4 setscrews
(@
~
@ in Fig. 3)
used
to
secure
bottom
board and 4 setscrews ( ®
~
@ in
Fig. 3)
for
the
legs.
Then the
bottom
board
can
be
detached.
Fig. 2
How
10
detach the front panel
1.
Remove the 4 setscrews ( @ - ® in Fig. 4)
and
then
carefully pull the
front
panel toward you.
~
y-®
T
~
~
(9)@
r®
,9
T
~set
Foot
@
~
Bottom Board
Fig. 3
• BEFORE STARTING THE REPAIRING
Before adjusting or repairing,
be
sure
to
short-circuit
opposite poles
of
the
8200pF
capacitors (C501, 502)
with
a
resistor
approximately
of
"50[2,
5W"
for
discharging the
charged voltage .
Short-circuiting
with
a screw driver and the like
is
not
only
dangerous, but may destroy transistors
and
diodes,
and
should therefore
be
avoided.
• HOW
TO
REMOVE THE POWER IC
1.
Remove the solder
of
power
IC
for
both
Lch
and Rch.
2. Remove the 3 setscrews
(CD
- ®
in
Fig.
5)
use
to
fasten the heat sink
from
the center bracket.
3.
Remove the heat sink along
with
power IC in
the
direction
of
arrow G (Fig.
6)
4.
Remove the 2 setscrews
(@,
CID
in Fig.
6)
used
to
secure the power
IC
on the heat sink,
and
then pull the power IC in
the
direction
of
arrow
@.
5.
When
mounting
the power IC,
apply
silicone
compound
(or equivalent heat diffuser)
to
the
back
of
power I
C,
and then
follow
the steps 1
- 4 reversely.
POWER
IC
IIC3031
CENTER BRACKET
Fig. 5
POWER
IC
IIC3041
SU-8022/K
~
19
i
Fig. 4
Electrolytic
Capacitor
Resistor(500,50W)
r=J
Lspeaker Tenniral J
Speaker Circuit
Rear
Panel
Protection Fuses
PRINTED
CIRCUIT
BOARD
Fig. 6
LEFT
CH
POWER le
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