Technics SU-VZ220 Service Manual

SU-VZ220
SU-VZ220
;
,
;
SU-VZ220_
’
7
8 9
10
11
12 13
14
15
16
Notes:
eS1
:
Power
switch
in
“on”
position.
eS2
: Voltage
adjustment
switch
in
“230
V”
position.
eS101
:
Input
selector switch
in
“PHONO”
position.
©S103-1
:
Loudness
switch
in
“off’’
position.
©$103-2
:
Mode
switch
in
‘‘stereo”
position.
B
LED
CIRCUIT
@S103-3
:
Tape
monitor
switch
in
“‘source/off”’
position.
S301
—_—::_ Source
direct
switch
in
“off”
position.
ee
@S501-1
:
Speaker
(A)
switch
in
‘‘on”
position.
LNO18472PH
©S501-2
:
Speaker
(B)
switch
in
‘‘off”
position.
47K 2700P R313 C319
© Indicated voltage values are the standard values for the unit measured by the DC
electronic circuit tester (high-impedance) with the chassis taken as standard.
Therefore, there may exist some errors in the voltage values, depending on the
internal impedance of the DC circuit tester.
: Positive Voltage Line
: ———— : Negative Voltage Line
: Phono Signal Line :
e\mportant safety notice: -
Components identified by A mark have special characteristics important for
safety. When replacing any of these components. use only manufacturer’s
sae
:
specified
parts.
HEADPHONES
This
schematic
diagram
may
be
modified
at
any
time
with
the
development
of new technology.
\
320 R314
2T00P 4.7K
0752,753
MA40B2MTA
VR302~2\
ooKic)
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
eCover the parts boxes made of plastics with aluminum foil.
©Ground the soldering iron.
Put a conductive mat on the work table.
©Do not touch the legs of IC or LSI with the fingers directly.
ArT55
172w2To 1/2w270
ART53
1/2W270 (SPEAKERS)
Arsi ARTS2
/2w560 =1/2W560
ARri94
N CIRCUIT
POWER ;
a SWITCH CIRCUIT
SPEAKERS
i
Asi
(POWER)
Iba 3
P3000LF ©
:
Smog
b
“ R507 RSIT = a
56K
560
e
i
H
3a
\
i
an
cri2
Bez,
i
sear
0701
~
704
0.047
}
10
|
VOLT.
ADJ./
|
c505
1wev22
fe
AC IN CIRCUIT
Ao704
| lo.
f
cy
uKS
1
(2)
A
' 4
:
ay
AC230/240¥
it (50/ 60Hz)
1
(4)
O °
1 240v 1
Lo.--4
371 :
R Apso: Aasoi
oe 1SR35Z00TB V/2wi2
R520 4.6V4 =
aoK
(VOLTAGE ADJ.)
=40-
-11-

Technics SU-VZ220 Specifications

General

Brand	Technics
Model	SU-VZ220
Category	Amplifier
Language	English