Ic Block Diagrams - Sony STR-DB725 Service Manual

3-19. IC BLOCK DIAGRAMS

IC001, 601, 701 uPC2581V
BIAS CIRCUIT
PROTECTOR
PRE
REG DRIVE
DRIVE
1 2 3 4 5 6
IC106 BA6208
SWITCH
SWITCH
1 2 3 4
IC251 NJM2296D
Vout2 SW1 Vin1
16 15 14 13 12
GND
V+
S6
S1
S4
S5
S3
1 2 3 4 5
Vout1 SW5 Vin5 SW3 Vin4
IC302 LC7822
1
IN
2
3
OUT
4
5
IN
6
7
OUT 8
9
IN
10
OUT 11
LEVEL SHIFT
12
VEE
CE 13
DI
14
SHIFT RESISTOR
CL
15
PRE
DRIVE
DRIVE
7 8 9 10 11 12 13
MOTOR
DRIVE
MOTOR
DRIVE
REG
5 6 7 8
Vout3 SW2 Vin2
11 10 9
S7
S2
V-
6 7 8
SW4 Vin3
30
29
28
OUT
27
26
25
24
23 OUT
22
21
20 OUT
19
VDD
LATCH 18 RESET
17 S
16 VSS
14 15
9
IN
IN
IN IN
– 43 –