JVC CA-MXK3, Service Manual

Page: 24 / 34

MX-K3
1-24
BA15218 (IC102) : Dual low noise operational amp.
1. Terminal layout
Pin
No.
Symbol
Function
I/O
Pin
No.
Symbol
Function
I/O
2. Pin function
BA5936S (IC621) : 6 channel BTL driver
1. Block diagram
- +
+ -
OUT1
- IN1
+IN1
VEE
Vcc
OUT2
- IN2
+IN2
32
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
31
LEVEL SHIFT
MUTE
T.S.D
27 26 25 24 23 22 21
D
x2
30
D
x2
29
x3/8
28
x3/8
20
LEVEL SHIFT
D
19
LEVEL SHIFT
D
18 17
D D
BIAS
BIAS
Vcc 100
13.3k
+ -
BIAS
100
13.3k
+ -
LEVEL SHIFT
DETECTION
OF REG-OUT
CURRENT
x2 x2
x3/8 x3/8
LEVEL SHIFT
D
LEVEL SHIFT
D D D D D
BIAS
Vcc Vcc 100
13.3k
- +
BIAS
100
13.3k
10k
10k
- +
+ -
1 OUT1- O CH1 negative output
2 OUT1+ O CH1 positive output
3 OUT2- O CH2 negative output
4 OUT2+ O CH2 positive output
5 IN2 I CH2 input
6 IN1 I CH1 input
7 VCC - Power supply terminal
8 VCC - Power supply terminal
9 REG-I I Regulator current detection terminal
10 REG-B O Connect to base terminal of external transistor
11 REG-OUT O Constant voltage output (Connect to
collector terminal of external transistor)
12 IN3-R I CH3 reverse input
13 IN3-F I CH3 forward input
14 OUT3+ O CH3 positive output
15 OUT3- O CH3 negative output
16 GND - Ground
17 OUT4- O CH4 negative output
18 OUT4+ O CH4 positive output
19 OUT5- O CH5 negative output
20 OUT5+ O CH5 positive output
21 IN5 I CH5 input
22 IN4 I CH4 input
23 VCC - Power supply terminal
24 BIAS IN I Bias input terminal
25 GND - Ground
26 GND - Ground
27 MUTE IN I Mute input terminal
28 IN6-R I CH6 reverse input
29 IN6-F I CH6 forward input
30 OUT6+ O CH6 positive output
31 OUT6- O CH6 negative output
32 GND - Ground