- 10 -
IC410 BA3314F (Dula Preamplifier with ALC Detector)
14
13
12
11
10
1
2
3
4
5
6
7
NF1
IN1
GND (SUB)
GND
Vcc
IN2
FIL
TER
ALC
ALC
NC
NC
NC
OUT 1
OUT 2
NF2
150k
150k
+
+
-
-
9
8
FM
IF
FM
DET
LEVEL
DET
S-CURVE
AM/FM
IF
BUFF
REG
GND
COMP
TUNING
DRIVE
AM
IF
AM
DET
VCC
AGC
PILOT
CANCEL
PILOT
DET
DECODER
ANTI-BIRDIE
STEREO
SW
FF
38k
FF
19k
VCO
304kHz
AM
RF.AMP
AM
MIX
AM
OSC
ALC
BUFF
P-DET
FF
19k
2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
IC211 LA1844ML (Tuner System)
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CCB
INTERFACE
CONTROL
CIRCUIT
15
14
16
17
18
19
20
21
22
24
25
26
23
10
9
7
6
5
8
11
L4
L3
L2
L1
NC
NC
R1
R2
R3
R4
RSELO RIN RTRE
RBASS1 RBASS2
ROUT
LSELO LIN LTRE
LBASS1 LBASS2
LOUT
TEST
V
SS
CE
DI
CL
V
DD
Vref
NC
12
13
1
2
30
29
28
27
4
3
LVref
RVref
IC411 LC75342M (Function SW / Electric Volume
/ 2 Band Equalizer)
IC412 TA8229K (Power Amplifier)
5
7
6
4
8
14
15
11
10
9
VCC1
VCC2
IN-1
IN-2
NF1
NF2
RIPPLE
TERMINAL
B.S.1
B.S.2
OUT-1
OUT-2
POWER
GND
Ch-1
-
+
3
2
12
13
Ch-2
-
+
PRE
GND1
PRE
GND2
BIAS CIRCUIT
THERMAL CUT-OFF
PROTECTION
IC BLOCK DIAGRAM & DESCRIPTION