JVC SR-VS30U Service Manual page 23

Block diagram
L
2 4
VCA
LINE IN
VCA
15 5 7 13
R
VR601
Input Level
L
Q1101
DECK A VR111
PB HEAD A PB EQ ADJ
(L)
R
Q2101
VR211
A PB EQ ADJ
(R)
HS
L
REC/PB SELECT
VR116
B PB EQ ADJ
DECK B
(L)
REC/PB HEAD
R
VR216
B PB EQ ADJ
(R)
IC845
7
L2401
8
B
ERASE HEAD
X
HX PRO
2
VR246
BIAS ADJ
-7V
(R)
IC851
VOL. CONTROL
& DD RP
DECK A
PB HEAD AMP
4
2
IC811
IC818
8
PB SIGNAL
6 1
SELECT
3
7
A70
5, 6
IC812
PB EQ SWITCH
Q8172
4
HS
VR212 VR112
B PB
D8101
(R) (L)
A PB LEVEL ADJ
REC
Q8153
IC816
DECK B
PB HEAD AMP
3 1 4
Q1152
4
2
IC815
8
7
Q2152
3
7 9
6
VR217 VR117
B PB LEVEL ADJ B PB LEVEL ADJ
(R) (L)
11
BIAS OSC
L1401
12
Q8491
10 2
Q8492
17
VR146
BIAS ADJ
L8401
-7V
(L)
FREQUENCY ADJ
REC PB
REC IN IN OUT PB OUT
(R) (L) (L) (R)
1 30 22 9
IC835
DOLBY NR
28 3 15 16
REC REC
OUT OUT
PB IN PB IN
(R) (L)
(L) (R)
2 11 10
12, 13
Q8171
3 8 9
A PB
B70
Q1251 Q2251
Q8251
REC MUTE
REC AMP
5
7
IC825
1
3
VR226 VR126
REC LEVEL ADJ REC LEVEL ADJ
(R) (L)
Q8481
+B
Q8482
-B
L
LINE OUT
R
HEADPHONES
5
7
J8601
IC861
H. P. JACK
1
3
IC852
LEVEL METER AMP
5 7
3 1
IC701
1
Q705
2
47
FL MUTE
3
METER
DI701
(R)
4 G0-G6
Q706
5
48
Q707 6
METER
7 (L)
9
S1-S16
24
2-1