Phase Motor Driver For Dvd Players - Marantz SA12 Service Manual

BA6856FP: 3 PHASE MOTOR DRIVER FOR DVD PLAYERS
Features
/3-phase, full-wave pseudo linear driving system
built-in power save
built-in therma shut down circuit
built-in current limit circuit
built in Hall bias circuit
built in FG-output (3-phase parallel output)
with switching function of regular/ reverse rotations
blockdiagram
28
RNF
27
VM2
26
VM1
24
REV
REV
23
PS
PS
22
EC
+
21
ECR
-
20
CNF
19
VH
H BIAS
18
FG1
17
FG2
16
FG3
MT2 MT1
30 29
25
VCC
DRIVER
GAIN
CONTROL
- +
GND
8
BA6856FB
NC1
NC2
+
-
H1+
+
H1-
-
NC3
+
NC4
-
H2+
+
H2-
-
+ NC5
-
H3+
+
H3-
-
146
3
A3
5
A2
7
A1
1
2
9
10
4
6
11
12
15
13
14