Technics SU-V2X - Schematic Diagrams: Control and Audio Circuits; Micro-Computer;LED Drive Circuit Schematic; Volume and Loudness Control Circuits; Tone, Balance, and Subsonic Filter Circuits

TONE AMPLIFIER/BALANCE/
POWER
[b) cro; computer’ oO TONE CONTROL, TONE SELECTOR DB srcieier, 2 eal
LED DRIVE CIRCUIT x on CIRCUIT NOR TRIER. le
iS
jee
a
beees
Fon
S|
Se
|
80S
VOLUME
LOUDNESS
Y
ea
CONTROL
MICRO coMPUTOR SENSE CIRCUIT CIRCUIT gees ep. |
(ANALOG FUNCTION CONTROL) Be I ORR 2 pea ea08 et. ceeei noneustt|
aay
560
50V3.3
'
othe
__
560
Sd
eae
xe
C527
ov er
R325 330K C317 50V0.22
P (3) ylo (3) —
ey .
Push the each 28 i (5) (5)
input selector im E R210 100 nun
pean
a
Sas
28
ge
3)
(3)
SESS
AP
(1)
a
(1:
: : a
sof (Jaw - ix ol 5
Pee ae cua g ac
3
om
de
|
FA
)
2)
g
e
e
D4I7 (2}—__{(2} yO) ~) Z (3) )
oe 3
Vs P42 Pail P40 POO P53 P52 PSI PSO PI3 PI2 Pil PIO RESET sio-1 £ i |
Cee
es)
ASCs)
es)
Co
CeCe
Lel
es
pee
aC
1¢401 x :
44 [44] & [= 0 x +4 +@+
20
pa
LO
JC
Ge
IIE)
ieee
~
1
~)
fl
$
+—
Q502
P43 x2 /XI CLK /PTOUTDATE ST P6O P6! P62 P63 CLI CL2 Vo UN42Iil o 7) (7) s9g-l (I ds csl2
SWITCHING , RESET 8 | (LOUDNESS) 8 oe, es] D501, 502
Aceineds 2ee MAI62A .
MAI67 4
raz Q401 a Bier
SAN Q301, 302 :
2SK 301 Si ick ec ih] Low || High| Low] | High] Low
ubsonic ene
P
,
a7
(}
6)
Loudness
MUTING,
AUDIO
PRO.
filter
:
ice
To
|
0
[7]
41
|
357]i3]
a3
1377
D403
0404
voren
switch
A
|
AN7062
o
|
0
|e]
423/37
fia]
415)
36.2]
‘igo ye . Volume —@n 883 pases VOLTAGE AMP
OTN D402, 417,418 Q4ol , LG ~~ 1C301
(a
tT
MAI65
2SA
1015
contro
w)
AN6553F
+
|
MUTING conTROL | fF JJ fe BF BB Bl tone ame Sees =
(muting
--20dB)
TONE
AMP
L
tas
LED
wx
Q601,
602
ox
lor
on , OS Sos
sdb Be te ake UN 4212 an #08 335
_sa SIGNAL LEVEL DET ie
aT 318% Lo eas “te
Q404, 405 IC 402, 403 8 oy GIFs aie q
be ON 2SCI8I5
UN4211
M53242P
S
30?
Se"
5
ven)
Q603
SIGNAL
LEVEL
DET
}
LED DRIVE LED ORIVE ky 0.015 o 33K (? Q604 j
=
oes
ar
ee
e.
ra)
Bx
i)
Q6ol
ie
ae
awe? 1
0403 (INPUT) aos ged =” or), ox
SVDPR5533K ees 23a ee a A) oe
MUTING IND ne Soar oe REI4 10K
O68 on Co RGIS 10K }
0404 + REI (OK
SVDAY5533K-M < 2. =k - set,
REC IND.” ax3 oe & zm ecat = +
zay [es 83 O-2)—-@)—)
meh AlZ Al2 All AIO TST RST SNSO &
Tone 39K -4— 5 °oj]C8)J0s_][$] [ec 5 |[4s o
(C601 C601
selector cs ° ! | sio-2 Treble o 7
fetet=— on | | See control Bass MNI404STE oy aon CREEKS: 3
. | Sdol contro Icqg CONTROLLER ray COO COI C02 CO3 CO4 COS
Thermistor aeqt— a Es]
]
eeorgo® [ose
3
38 25va7 3 )
.
a],
[s|
BIS
ez
Ra
oF oO
Ts ° 8 ra) R629 3.9K
2 " ° Q607 ed z
8
25°C
3
c308
2SC
isis
co}
° « o POWER ON-OFF
(85°F)
Veg
Ys
A
DETECTOR
SENSOR ae 38 vs} (2) ce
BS
mo
|
Q451
Sx
ep SRY Roe) ely |
E ”
° On 0X
Crystal x 8 5G () + e[ = CH
O.S.C.
1c404
3
So]
|
ae
2 =
(400kHz) AN4069UB 3 3 s oy 8 eX
CLOCK GENERATOR 3 i e % b4
D41I~416 D405~410 +} 3S +
SVDAY5533K-M SVDPR5533K oN 0401,451 Q45) Q609 Q610
REC IND LED. DRIVE Pi) u |MAI65 2SA 1015 2SAI1015 2SAI015
, Memory back-up << 4138 STAND-BY PLUSE| Ica BIAS CONTROL (Lch) Ica BIAS CONTROLIR A
on GENERATOR
(FOR MICRO —
COMPUTOR)
Sip