Pioneer DEQ-P800/UC Service Manual page 34

1
7.2 IC
HA12240FP
A
8
BIAS
B
1
* TC7WB383FK
VCC
8
C
1
OE
* AN8015SH
D
CT 1
RT
2
S.C.P. 3
E
GND
4
OUT 5
F
34
1
2
7 6 5
DRIVER
+
OUTPUT
-
(CURRENT)
RECEIVER +
COM
-
OUTPUT
2 3 4
C1 D1 EX
7 6 5
2 3 4
A1 B1 GND
Triangular
wave OSC
Clamp
0.5V
I
VREF
R O
S R
Latch U.V.L.O.
+
PWM
comparator
DEQ-P8000/UC
2
3
* XC25BS5118MR
CLK
IN
6
1 _
2
Fuse
Select
1
CE
IC's marked by * are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
10
Error
S.C.P.
amp.
comp.
-
-
+
+
1.83V
2.46V
Reference
supply
11.1V
3
4
VDD Q
1
5 4
I/M
Counter
11bit Pll
(XN)
2 3
VSS Q
0
FB
IN-
9
IN+
8
VREF
7
VCC
6
4