Technics SU-V4 Service Manual

14 15 16 4a 18 19 20 21
Fe = m SCHEMATIC DIAGRAM
e Power source circuits for [XAL] and [XA]
eioeecn t aceaeeecee | ie
| 3
: | 1. $1: Phono selector switch in “MM” position.
en meena A MM<—>MC | 7 |
| e ad ) 2. $2: Input selector switch in “phono” position.
je Are -——fa} Ag ANAC LINE | Ce — @ aux++>©@ tuner+*® phono++@ tape 1+>@ tape 2
| oh 3. $3: Rec selector switch in “phono” position. 3
Arran
|
403
€
23
0.01
120/100/
120/107
|
@
aux
@)
tuner+>@
phono+>@
off+~+>@®
tape
2
>
1
ecu
i
|
ee
s0/ecu
+6
tape
1
2
pa © | 622)—4-0 me | peReoNe 4. $4: Loudness switch in “off” position.
Tat . . | Ase 5. $5: Operation switch in “straight DC” position.
BRN I 4 AC 110/120/220/ G23) ame 1 ; 6. S6 High filter switch in “off’’ position.
TAC 120] 240V 7. $7: Subsonic filter switch in “off’’ position.
pe
com
50/60Hz
A\c4o2
|
|
8.
S8:
Speaker
switch
in
“‘main’’
position.
cho | 7 ee main+—remote
-yer, Lo] K I ne a ee
ay c402 B 9. $9: Power switch in “‘on” position.
me RED JAC 120] | ses eee ea oe ee ee ‘ —_ - _ ee : | 10. $10: Meter range selector switch in “X11” position.
,
my
Ace
[XAL]
.....
Available
in
Australia
[XA]
.....
Available
in
Asia,
Latin
America,
eh
seid,
ieee
Cee
scaenauueactaee
4 . . F : Voltage adjustment switch in Osi
ame <I | | Middle East and Africa Lia pecle se ten mere ee
Q701 Q702 ,703 12. A\ Indicates that only parts specified by the manufacturer be
2SD 762 2SC 828 , used for safety. |
REGULATOR MULTIVIBRATOR
13. [(_]Indicated voltage values are the standard values for the DC
c707_ SOV 0.! ~ electronic circuit tester (high impedance) with chassis taken as
+, standard. Therefore, there may exist some errors in the voltage
C706 I6VIO
ame [1h
21Ja702 Q703 be
values, depending on the internal impedance of the DC circuit tester.
14, se Phono signal lines of left channel
15, «m= Positive (+B) voltage lines
. Negative °
voltage line 7
= By
A\R713 1/2 100
Go)
; WN
;
N
a
Fa
ee
Rae
aa
ma
As
5
at
Ee
mee
c
7
i]
G
:
a
R6SI
aN
}
a
Ch
GATE
p
a)
Bs
si
[iw
eur
Ea
Si
|
:
@8}—
IN
PUT
own
a
HOLO|GATE
OUT
yeaah
ie
|
2
Ee
eel
a
(+8dB)
(eo)
;
|
[mewn
tage
oor
|
|
|
olas
iFG
ponGare|
|
|
OUT
(ad)
|
Sf} Sit tr
UL JHOLO|GATE| OUT @9) ouT O
: | 16 | |
Q704, 705 D70I D702~~704 . Ga RESET RESET +——— | | | l
2SC
1685
SVDMZ322B
MA
150
3
!
MUTING
.
|
ie
pox
|
J
|
OUT
9)
eae)
|
A
on
sed
roms
cn 2 T forio our egress OUT 4) (308)
|
E
|
~
|
|
!
|
|
| | | |
| Sync |
| OUT O
| Hoxofoare| OUT (-10dB)
| meee,
|
(2)
osc
|
OUT Q
i fp HS YP ehsa8)
; GND
OUT R
GATE] | ©) (-20dB)
F Le er
: 1IC702 (AN6870) |
| EC Csh le Oleh lat 2
{ 5 10 15 20 25 30 0 0=—32 :

Technics SU-V4 Specifications

General

Brand	Technics
Model	SU-V4
Category	Amplifier
Language	English