— 68 —
- TCB BOARD Section -
IC41 LA1835
IC21 LC72130
1
2
3
4
5
7
8
9
10
11
12
14
15
29
27
30
ALC
BUFF
AM
OSC
AM
MIX
28
AM
RF. AMP
26
AGC
S METER
LEVEL
DET
FM
IF
FM
DET
REG
GND
6
S-CURVE
AM/FM
IF
BUFF
COMP
TUNING
DRIVE
AM
IF
AM
DET
FM
AM
25
24
23
22
21
20
19
17
16
18
DECODER
ANTI BIRDIE
STEREO
SW
TRIG
STEREO
DRIVER
FF
FF
FF
VCO
PILOT
DET
PHASE
DET
AM/FM
SW
Vcc
MUTE
FM-SD
AM-OSC
FM-AFC
AM-RF-IN
AG
C
AM.
CUT
AM/FM
VCO
MPX-IN
OUT R
OUT L
AMP-IN R
AMP-IN L
R
L
FM-IN
AM-MIX
IF
REG
AM-IF
GND
TU-LED
ST
-LED
DET
VCC
IF-B
UFF
AM.
SD
AM.
SD
AM/FM
VCO-ST
OP
13
2
3
4
5
6
7
8
9
10
11
12
24
23
21
20
19
18
17
16
15
C'B
I/F
DATA SHIFT REGISTER
LATCH
UNIVERSAL
COUNTER
13
14
22
XOUT
VSS
AOUT2
AIN2
PD2
PD1
AIN1
AOUT1
VDD
FMIN
AMIN
IO2
SWALLOW COUNTER
1/16. 1/17 4bits
REFERENCE
DIVIDER
12bits PROGRAMMABLE
DRIVER
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
POWER
ON
RESET
1/2
XIN
BO5
CE
DI
CL
DO
BO1
BO2
BO3
BO4
IO1
IFIN
1