Technics SU-V4A E - Page 15

PANA-01943 / DRUCK 5
D407, 408 D403-~ 406
Positive
voltage
line
SVDMZ3I6C
SVDS3V20
Volume control
Treble control
(Lch) ——
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C406
25D8
REGULATOR
C3i! 0.01
2SB750
REGULATOR
(TREBLE )
Clamp voltage adj.
Q301, 302 Q303—~ 306 Q307~ 310
2SK 109 2SC 263! 2SAIOIS5
BUFFER DIFFERENTIAL CURRENT MIRROR
\| R205
\¥ 20K
SVITA 73I17P
SPEAKERS PROTECTION
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1C60!
Q3tt, 312 Q313, 314 Q315, 316
2SA92! 2SA1124 2SC 2632
EMITTER FOLLOWER PRE ORIVE CONSTANT CURRENT
C309 220P
D301, 302 D303~~ 310 D3i!, 312
MAI62A OA90 SVDMA26— |
Ji
Bass control
(Lch)
— R608 100K
$4
(LOUONESS)
on—— off
1c 302 (2)
svisTKe
8050 L21®@
R212
C316 C314
D606 R620
Clamp voltage adj.
Q60!, 602 Q603 Q604 D6O!, 602, 605, 606
Bass control (Rch) 2SCI980 2SAI0I5 2SCI685 MAI50
CURRENT RELAY HOLD RELAY HOLD
DETECTOR
ote (TREBLE )
R214 {C212 VR203—-2 c2I0
i
Treble
control
(Rch)
Operatio
Straight DC -—-Via tone
[Ty
Negative
voltage line
' bad
— |
15
~~ T
MAIN
(Lech)
as |
REMOTE
—J
a
MAIN
ee
(Rech)
~~
REMOTE
—I