Pioneer DV-2850-S, Service Manual, Page: 74 / 84

DV-2850-S
74
1 2 3 4
1 2 3 4
C
D
F
A
B
E
11k
Ω
44k
Ω
1
2
3
4
5
15
16
10
11
12
13
14
FR
6
7
8
9
17
18
35
34
33
32
31
30
29
27
26
22
21
20
19
FR
23
24
25
36
28
44k
Ω
11k
Ω
44k
Ω
44k
Ω
–
+
–
+
–
+
11k
Ω
FWD
Input
Output control
Level shifter
Level shifter
Level shifter
Level shifter
Sugnal system power supply
Thermal shutdown
circuit
To VREFOUT
(Load output voltage setting)
To VREFOUT
CH1
11k
Ω
REG_IN
REG_OUT
(Vcc)
SGND
REV
VCONT
VCCP2
MUTE1
VLO–
MUTE234
VLO+ VIN4–
VO4+
VIN4
VO4–
VREF_IN
VO3+
VREF_OUT
VO3–
REG_OUT
VO2+ REG_IN
VO2–
VIN+OP
VO1– VIN–OP
VO1+ VO_OP
VCCP1 VIN3
VCCS
VIN3–
VIN1+ VIN2
VIN1– VIN2–
VIN1 VIN2+
CH2,3,4
Internal Block Diagram
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
Power
system
ground
Signal system
ground
MUTE
Turns the corresponding
channal on/off.
High : output on,
Low : output off
Power
system
ground
LA6565 (DVD MT : IC2301)
• MOTOR DRIIVE