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
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
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9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299