Read JBL BP 1200.1 (serv.man5) Service Manual online
Integrated Circuit Diagrams
U105 (TL074CN)
1 Channel Automotive Amplifier
BP-1200.1
12
IN D+
IN D -
IN C-
OUT D
OUT C
IN C+
VCC-
OUT A
IN A+
IN A-
IN B+
IN B-
OUT B
VCC+
5
14
13
12
11
10
9
8
6
7
C
C
+
-
+
+
D
U171 (F16)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
14
13
12
11
10
9
8
7
6
5
4
3
2
1
15
16
VDD
VDD
=VDD
VSS
=VSS
VSS
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q12
Q13
Q14
RESET
0
1
0
8
16
4
5
1
2
3
12
11
10
9
6
13
15
14
7
R
R
R
R
R
R
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