Pioneer DV-380-S Service Manual page 76

1
LA6565 (DVD MT : IC2301)
QQ
3 7 63 1515 0
• MOTOR DRIIVE
Internal Block Diagram
A
FWD
REV
VCCP2
VLO–
B
VLO+
VO4+
VO4–
VO3+
C
VO3–
TE
L 13942296513
VO2+
D
VO2–
VO1–
VO1+
VCCP1
E
VCCS
VIN1+
VIN1–
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VIN1
F
74
1
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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
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2
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3
8
Thermal shutdown
circuit
(Load output voltage setting)
MUTE
Turns the corresponding
channal on/off.
High : output on,
Low : output off
44kΩ
11kΩ
–
+
REG_IN
–
Q Q
+
3 6 7 1 3
REG_OUT
44kΩ
11kΩ
–
+
44kΩ
11kΩ
–
+
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DV-380-S
3
4
2 9 9 4 2 8
Signal system
ground
36
SGND
35
VCONT
34
MUTE1
CH1
33
CH2,3,4 MUTE234
– VIN4–
32
+
To VREFOUT
31 VIN4
–
+
30
VREF_IN
29
VREF_OUT
28
REG_OUT
(Vcc)
Power
system
1 5 0 5 8 2 9
ground
FR
–
27 REG_IN
+
26 VIN+OP
–
+
25 VIN–OP
24 VO_OP
23 VIN3
– VIN3–
22
+
To VREFOUT
21 VIN2
VIN2–
20
–
m
+
VIN2+
19
co
4
9 9
9 4 2 8 9 9