Sanyo DCS-AVD8501 Service Manual page 45

IC BLOCK DIAGRAM & DESCRIPTION
IC412 KIA7042AP (Voltage Detector)
1. V
CC
2. GND
3. OUT
1 2 3
IC431 LC75342M (2Band Equalizer)
LSELO LIN LTRE
10 9
L4
11
L3
12
L2
13
L1
14
NC 15
NC
16
R1
17
R2 18
R3 19
R4
20
21 22
RSELO RIN RTRE
IC435 M62464FP (Dolby Pro Logic Surround Decorder with Discrete 5.1 ch Analog Input)
1 V
3 OUT
2 GND
LBASS1 LBASS2
8 7 6
LVref
CONTROL
CIRCUIT
LOGIC CCB
CIRCUIT INTERFACE
CONTROL
CIRCUIT
RVref
23 24 25
RBASS1 RBASS2
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
ABR
65
NGC3
66
NGC2
67
NGC1
68
AV
69
CC
VREF1
70
REF
71
LIN
72
RIN
73
LTIN
74
RTIN
75
CIN
76
SLIN
77
SRIN
78
SWIN
79
VRSWIN
80
1 2 3 4 5 6
IC432,433 NJM4558M (Operational Amplifier)
CC
IC434 TA2078P (3 Mode Preset Equalizer)
LOUT
5
4 TEST
3
V
SS
2 CE
1
DI
30 CL
29 V
DD
28 Vref
27 NC
26
ROUT
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
- 60 -
A OUTPUT
1
8
A
A -INPUT
2 7
B
A +INPUT
3
6
VEE(-)
4 5
11 12 13 14
IN 16
IN 1
6 5 4 3
OPERATION MODE
A (10PIN) B (9PIN) BOOST FREQUENCY
NORMAL L L Flat (No. equalizing)
ROCK H L High / Low boost-1
CRASSIC L H High / Low boost-2
POP H H Mid boost
DVOLOUT
40
LPF2OUT
39
LPF2IN2
38
LPF2IN1
37
DAINTOUT
36
DAINTIN
35
DACONT
34
ADCONT
33
ADINTOUT
32
ADINTIN
31
LPF1OUT
30
LPF1IN2
29
LPF1IN1
28
DIN
27
DSELOUT
26
DV
25
SS
VCC(+)
B OUTPUT
B -INPUT
B +INPUT
7 Vcc
8 GND
15 OUT
2 OUT
9 B
10 A