JVC KD-SX985 Service Manual page 30

KD-SX985
QQ
3 7 63 1515 0
LA6579H-X (IC681) : 4-Channel bridge driver
1. Pin layout & Block diagram
1
VIN1-A
2
VIN1+A
3
VCCP1
4
VO+
5
VO-
6
VO2+
7
VO2-
TE
L 13942296513
FR
FR
VO3+ 8
VO3- 9
VO4+ 10
VO4- 11
VCCP2 12
13
VIN4
www VIN4G 14
1-30
http://www.xiaoyu163.com
VIN1_SW
[H]: OP-AMP_A
[L]: OP-AMP_B
Power system
GND
33k
11k
x ao
y
. i
http://www.xiaoyu163.com
8
[H]
[L]
33k
Signal system
11k
power supply
-
+
All outputs ON/OFF
H : ON
MUTE
L : OFF
Q Q
3 6 7 1 3
Power system GND
Signal system
power supply
3.3VREG
(External:PTP Tr)
33k
-
+
33k
-
+
u163
.
2 9 9 4 2 8
28
VIN1
27
VIN1-B
-
+
26
VIN1+B
25
S-GND
24
VIN1-SW
23
MUTE
22
VREFIN
1 5 0 5 8 2 9 9 4
FR
FR
21
VCCS
20
3.3VREG
19
REGIN
18
VIN2G
11k
17
VIN2
16
VIN3G
11k
m
15
VIN3
co
9 9
2 8 9 9