Technics SU-Z55 - Page 22

SU-2Z55
10 11
@ SCHEMATIC DIAGRAM
(This schematic diagram may be modified at any time with the
development of new technology.)
FL Level Meter
POWER
AMPLIFIER,
MUTING
AND
POWER
SUPPLY
LE
spencer
TERMINAL
ic301 D301, 302 0301, 302 e302
AN7062 MAI62A 2SA992 SV1STK2038B
VOLTAGE
AMP
DRIVER
2ch
POWER
AMP
L
\
\
i \
NF
Line
MAIN
a Seal
:
3
=g
C3
SP
2
ayers
Sa
Voltage
Amplifie
ey
Power
Amplifier
SPEAKERS
ie cibenoende tag seth aden” asec 92K)
1C501 ; ES SmS care L
D30r @m) S0V4,7
SVIBA6I48
14:
Loh FL DRIVER 6303 q ae Fer | ae
(COMPARATOR ) a
5 eS R
R308 C301 Sha | oS
Ik 3 8 os s
2
v9
Aap
petipeiaguisga
ia:
rs
g
a33%
(
CH
ais
oT
om
Zi
)
ee
sts
3
3
*The
part
No.
of
transistors,
IC
and
diodes
mentioned
in
the
schematic
:
Om
Ore
sfé
65)
B52]
GED
ET)
B77
Gag
o
diagram
stand
for
production
part
No.
Regarding
the
part
No.
with
6
inact
g
e]o
e301
only
oO
mark,
the
production
part
No.
are
different
from
the
replacement
: = E a ae part No, Therefore, when placing an order for replacement part, please
:
ome
Is
36.3]
(35.2
[565]
BF)
BFA
Bea)
sl
use
the
part
No.
in
the
repiacement
parts
list.
:
(s}
6)
Pe
@—-O—-O—-O—_O—-O—-
oT
f
.
Notes:
Ap322
eet
:
4
ls
; _ eal 1. This is basic circuit diagram (For continental Europe} of this unit.
a
E
2.
Regarding
the
circuits
to
be
changed
in
the
basic
circuit
diagram
(For
é
'
continental
Europe)
and
related
areas
({EGA],
[XL],
[XA])
and
[PC]
somes
2
fe
refer
to
the
booklet
contain
manual
(Order
No.
SD83062525C8-—
A).
Roch FL DRIVER : § 3. $1-1 ~ $1-3 : Input selector switch in “phono” position.
(COMPARATOR
:
: . ; S + {( S1-1 : phono, $1—2 : tuner, $1—3 : Aux/
E : &
:
a
CD/Video)
: ai 4. $2-1 ~S2-2 Tape-monitor selector switch in ‘‘source’’
Re 3 Nien Position.
. 2 — f : + .
10V (Segment Light up)® | E (S2-1 : tape 1, S2—2 : tape 2}
_04V
SI
E
5.
$3
Loudness
switch
in
‘off’
position,
.
a
:
i
6.
S4-1
~
S4—2
Speaker
switch
(main)
in
‘‘on"
position.
of E Speaker switch (remote) in ‘‘off'’ position.
ae FL Bal 3 : : (S4—1 : main speaker, S4—2 : remote spe-
S¥BakY SEVER B Suaiee ee a S| C414 For(EGAlonly aker).
neoe aoe ee ar Switch Lifes 4 3 : Muting \ E 7. SB Power source switch in “‘on’’ position.
SYDSHV EGY CR op \ — a E E 1c40l \ E 8. S6 ([XA] and [PC] area Voltage selector switch in “240V" position,
(23) \ { aii MUTING 8 PROTECTION \ @?) E only) (Refer to booklet contain)
+ ++ : :
q E : 7 120V <—» 110V «> 220V<—» 240V
FL LEVEL METER \ 2401 o4oz, ao3_ | Power Supply 9) ie Find
I [ \ : 9, Indicated voltage values dre the standard values for the DC
TONE
CONTROL
\
5
't,
JOVER
LOAD
DET
IMUT
ING!
eeplols
eeD
SF
ANC
G2)
@')
4)
3)
2s)
(5)
\ I SWITCHING FPREGULATOR RO Re 4 4 electronic circuit tester (high impedance) with the ground point taken
\ E E 9) . as standard. Therefore, there may exist some errors in the voltage volues,
\ "pais | ceos Tt : E 3 \ & depending on the internal impedance of the DC circuit tester.
= ms r : j [ ae i g $4 oll - 10. Important safety notice:
VOLUME CONTROL ; ti ae a 3 § + 2 $ g ¢ 3 Components identified by A mark have special characteristics important
f «J . a =
Bie i oike es, A ; : * s 3g for safety. When replacing any of these components, use only manufacture-
) — a | 8 a2 | i i = i ee eo ee ee eee r’s specified parts.
ade
°
;
.
E
<]
11.
“
Phono
signal
lines
of
left
channel.
2 i \ £ 0 : : :
i \ | Lo Poet | |: [ 6) 12, NF Signal lines of teft channel.
? -2 ms E t
; \ ‘ eT | a ila f I 63) 13, —=eP> Positive (+B) voltage line.
\ = |
Fes cae 2 i Sf i 14, =—— <> Negative (—B) voltage fine.
& : { {
ome - « —- j t
(3) sy le t
a - q : oe [3 E n3zq HEADPHONES
Sec
oe
&
ny
D401
D402
0403,
404
0405
~
408
Mee.
S:
by
§
é
:
E
©
maiso
SVDMZ312C
SVOMZ
316
svps2v20
Sis - OO 12V ZENER 16V ZENER RECTIF‘ER G3) twee
; Ome SPEAKER & Ass &
oo
ome SWITCH ri
cme C60I 0.0%
. © nas © CE a
| we vient FL Tone | Bass as i i = - ae
Bar Switch: Treble sas _ genes 150/60Hz
i aia = = 32 = _ =