JVC KS-FX621 - Page 21

KS-FX621
(No.49825)1-21
SECTION 4
Description of major ICs
4.1 CXA2559Q (IC401) : Head amp.
•Pin layout
• Block diagram
1
10
30
21
31
32
33
34
35
36
37
38
39
40
20
19
18
17
16
15
14
13
12
11
1 2 3 4 5 6 7 8 9
10
30 29 28 27 26 25 24 23 22 21
+
-
+
-
+
-
+
-
+
-
7k/12k
7k/12k
300k
100k
100k
24dB
MS MODE
BIAS
MUTE
TAPE EQ
FWD/RVS
LPF
DET
24dB
T2
X1
X1
F2
30k
30k
45k
F1
300k
T1
F3
Vcc
MS ON/
OFF