Pioneer DV-588A-S Service Manual page 74

1
LA6565(I03F065650) : (DVD MT : IC2301)
• MOTOR DRIIVE
Internal Block Diagram
A
FWD
REV
VCCP2
VLO–
B
VLO+
VO4+
VO4–
VO3+
C
VO3–
VO2+
D
VO2–
VO1–
VO1+
VCCP1
E
VCCS
VIN1+
VIN1–
VIN1
F
74
1
2
1
2
3
4
5
6
7
8
9
Power
system
–
ground
FR
+
10
11
12
13
14
15
Sugnal system power supply
44kΩ
16
11kΩ
–
–
+
+
17
18
2
3
Thermal shutdown
circuit
(Load output voltage setting)
MUTE
Turns the corresponding
channal on/off.
High : output on,
Low : output off
44kΩ
11kΩ
–
+
REG_IN
–
+
REG_OUT
44kΩ
11kΩ
–
+
44kΩ
11kΩ
–
+
DV-588A-S
3
4
Signal system
ground
36
SGND
35
VCONT
34
CH1 MUTE1
33
CH2,3,4 MUTE234
– VIN4–
32
+
To VREFOUT
VIN4
31
–
+
30
VREF_IN
29
VREF_OUT
28
REG_OUT
(Vcc)
Power
system
ground
FR
–
27 REG_IN
+
26 VIN+OP
–
+
VIN–OP
25
24 VO_OP
VIN3
23
– VIN3–
22
+
To VREFOUT
21 VIN2
20 VIN2–
–
+
19 VIN2+
4