JVC KD-SX950 Service Manual page 19

LA6557-X(IC581):Driver
1.Terminal layout
2.Block diagram
VCC2 1
V05- 2
3
V05+
4
V04+
5
V04-
6
V03+
7
V03-
FR FR
8
V02+
9
V02-
V01+ 10
V01- 11
VCC1
12
13
VIN1+
VIN1-
14
~
28
~
1
CH3,4,5
Thermal shutdown
POWER
CH5
CH4
CH3
CH2
CH1
CH1,2
Power
22K
11K
15
14
MUTE is as follows:
High : Output ON
Low : Output OFF
22K 11K
Signal System Power
SVREG (External PNPTr)
22K
22K
28 REV
27 FWD
26
S-GND
25
MUTE
MUTE
24
VIN+
23
VIN4-
22
VCC-S
FR FR
21
VREF-IN
20
REG-OUT
19 REG-IN
18 VIN3-
11K
VIN3+
17
16
VIN2-
11K
VIN2+
15