Panasonic SA-AK78 Service Manual page 19

MAIN SECTION
•
FM ANT
+B(FM)
RF AMP
FM MIXER
LOCAL OSC
+B(FM)
24
1
18
AOUT
17
AIN
16
PD
11 IFIN
LC72131M
PLL FREQUENCY
SYNTHESIZER
UNIVERSAL
V
15
DD
+B3
+B(FM)
19 Vss
POWER
+B5
SUPPLY
(FM:ON)
All manuals and user guides at all-guides.com
IFT
+B(FM)
FM IF
+B(FM)
AMP
BUFFER
AMP
3 22 23 21
REG
ALC AM
AM AM
OSC
RF
OSC MIX
OUT
AMP
BUFF.
LEVEL
DET.
AM/FM
IF
FM IF
S-
BUFF.
IN
CURVE
FM IF
TUNING
FM
DRIVE
DET.
Vcc
9 8 2
+B3
AM
IFT
PHASE DETECTOR REFERENCE
CHARGE PUMP DIVIDER
SWALLOW COUNTER
1/6,1/17 4bit
12 BIT
PROGRAMMABLE
DIVIDER
COUNTER
DATA SHIFT REGISTER
LATCH
POWER
ON
RESET
10 12 7 8 9
AM ANT
AM AM
ANT OSC
COIL COIL
20 19 18 17
AGC
PHASE
AM AM
IF DET.
COMP.
GND
5
4 6 10
+B3
7.2MHz
1
XIN
20
XOUT
FM IN 14
1/2
AM IN 13
2
CE
3
DI
4
CL
5
D0
6
AM
19
+B3
Rch
LA1833MN
FM / AM I F AMP,
DET / AM OSC,
MIX / FM MPX
16 15 13 14
DECODER
STEREO PILOT
DET. SW CANCEL
PILOT
VCO FF FF FF
DET.
1 12 7
SD
PLLCE
PLLDT
DO
A
SA-AK78