Page 1
5. BLOCK DIAGRAM
v
cc
IF
Ou
t
Quad
In
AFC
AF
Output
Mute
Mute
Input
GNDMute
Drive
Signal
Meter
Output
AGC
GND
Bias
IF Input
V
ref
VOLTAGE
REGULATOR
12
1
2
3
4
16 15 10 6
5
8
7
13119
1st
Amp
2nd
Amp
3rd
Amp
4th
Amp
5th
Amp
6th
Amp
OUAD
LIMITER
OUADRATURE
DETECTOR
AFC
CLAMF
AF
MUTE
Amp
LEVEL
DETECTOR
LEVEL
DETECTOR
LEVEL
DETECTOR
SIGNAL
METER
DRIVE
AGC
DRIVE
INVERTER
HOLE
DETECTOR
DC LEVEL
DETETOR
MUTE
DRIVE
14
Attenuation
Adjust
LOCAL
OSC
BUFFER
LOCAL
OSC
SIGNAL
METER
IF
AGC
IF
DETECTOR
ALC
ATTENUATOR
DRIVER
RF DETECTOR
RF
AMP2
RF
AMP2
MIX
RF
AGC
RFAGC
Out
RF
AGC
ANT Damping
Driver
GNDRFAmp2
In
4 5
MIX in &
RF AMP1 In
6
MIX
Out
7
IF Amp
In
9
IF Amp
Out
10
Detector
In
11
Detector
Out
13
Signal
Meter In
15
Signal
Meter Out
16
IF
AGC
17
Local
OSC1
18
Local
OSC2
19
Local OSC
Butter Out
20
V
CC
14
GND
12
V
CC
8321
IF
AMP
IC101 DBL 1018
IC201 DBL 1019
- 7 -
Page 2
IC301 KIA6043S
1/2
STABILZED
POWER SUPPLY
6
4
7.1V6.6V
L.P.F-1
CO
ADJUSTMENTV
2
AF DC
PHASE
DETECTOR
VCO 76kHz 1/2
TRIGGER
19kHz<0
PILOT
DETECTOR
1/2
STEREO
DECODER
STEREO
SWITCH
19kHz<90
7
38kHz
GND
0V
7.4V
8V
V
CC
LED
L.P.F-2
4V4V
3.5V
INPUT
RIGHTLEFT
OUTPUT
SW1
SW2
COUNTER
38kHz CHECK
SW1 VCO STOP SWITCH
SW2 38kHz MONITOR SWITCH
1
5 3
FC
8 9
POWER ON
RESET
TRI-STATE
BUFFER
TRI-STATE
BUFFER
RESET
PHASE
COMPARATOR
OSC
CIRCUIT
24bit REGISTER
ADDRESS
DECODER
20bit BINARY COUNTER
UNIVERSAL COUNTER CONTROL
OUTPUT PORT
24bit REGISTER
4
FM
1mS
OSC
MODE LF
4
UNLOCK
1/0 PORT
8
TEST
24 22
5
5
10
12 bit PROGRAMMABLE COUNTER
MAX
12
15
4
OT4
DO1
DO2
(DO2/OT-4)
1/0-5/CLK
1/0-6
1/0-9 IF
IN2
(1/0-6 IF )
IN2
1/0-8 IF
IN1
1/0-7 SC
IN
(1/0-5 IF )
IN1
4
15
129
16
13
14
8
OT-4
OT-2
OT-3
OT-4
OT-1
XT 1mS
GATE
AMP
AMP
7
6
3
4
5
1
2
10
11
1/2
FM
FM
PSC
V
DD
GND
AMP
HF
FM
IN
AM
IN
XT
XT
DATA
CLOCK
PERIOD
S
L
2 MODULUS
PRESCALER
4 bit SWALLOW
COUNTER
REFERENCE COUNTER
24bit SHIFT REGISTER
IC401 KIC9256P
Note: Mark terminals are not existence in KIC9256P, KIC9256F
Terminal name of KIC9256P, KIC9256F is shown in parentheses.
Others are common terminals.
- 8 -
Page 3
IC402
µPD789104
- 9 -
Page 4
IC501 LA3160
TR4
R5
TR5
OUTPUT
NF
GND
OUTPUT
V
CC
4
2
3
5
5
R7
R8
R16
R15
TR10
R14
TR9
R13
C2
TR6
TR7
TR8
R12
R4
TR3
TR2
R6
TR1
R3
R2
R1
D2
D3
D7
R9
R10
D5
D6
R11
1
C1
INPUT
7
INPUT
NF
C1
RB
RB
TREB_RBIN_RBOUT_RLOUDRINROUTREFAGNDVDD
RIN1
RIN1
RIN2
RIN2
RIN3
RIN3
LIN3
LIN3
Input
Selector
& Gain
Control
LIN2
LIN2
LIN1
LOUT LIN LOUD_L BOUT_L BIN_L TREB_L
LFOUT
Mute
Mute
Mute
Mute
Speaker
ATT
Speaker
ATT
Speaker
ATT
Speaker
ATT
LROUT
CLK
DATA
DGND
RFOUT
RROUT
LIN1
2
11
10
9
13
14
15
17 16 12 19
18
4
25
23
28
27
26
24
22
31 7 6 8 21
20
5
Supply
Bass
Serial Bus Decoder & Latches
Bass
Treble
Treble
Voume
&
Loudness
Voume &
Loudness
IC601 PT2313L
- 10 -
Page 5
IC801 TDA8571J
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
PGND1 PGND2 PGND3 PGND4
MGG153
OUT4
-
OUT4+
OUT3+
DIAGNOSTIC
TDA8567Q
OUT2+
V
OUT1+
OUT3
-
OUT2
-
OUT1
-
21
20
22
19
17
9
5
7
4
2
23 16
10
11
12
13
14
30 K¥
30 K¥
30 K¥
30 K¥
IN1
MODE
IN2
SGND
IN3
IN4
8 1 15
186
3
ref
V
P1
V
P2
V
P3
V
P4
V
ref
V
DIAG
V
SS
V2
LCD
V1
LCD
V
V
LCD
OSC
Common
driver
Segment driver & latch
Shift register
Clock
generator
Address
detector
COM3
DI
CL
CE
COM2
COM1
S35
ZZ
ZZ ZZ ZZ
S34
S9
S8/P8
S2/P2
S1/P1
INH
DD
IC901 LC75833E
- 11 -
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