19
20
21
22
23
AM
MIX
12
LEVEL
DET
FM IF
S-
CURVE
2
3
REG
4
13
AGC
COMP.
6
8
11
10
AM
RF
AMP
AM
IF
AM/FM
IF
BUFFER
24
1
FM
DET
AM
OSC
BUFF.
ALC
Tuning
Drive
18
FM ANT
RF AMP
FM
MIXER
LOCAL
OSC
9
Vcc
+B(FM)
+B3
AM
IFT
1
20
7.2MHz
XIN
XOUT
CE
2
3
DI
4
CL
D0
5
9
8
7
10
STRQ
SDC
FM
15
V
DD
16
PD
IFIN
11
LW
1/2
14
13
FM IN
AM IN
+B3
+B5
+B(FM)
SD
TCE
TDT
IF DATA
17
LA1844
FM / AM I F AMP,
DET / AM OSC,
MIX / FM MPX
15
16
VCO
FF
FF
FF
AM
DET
AM
6
MONO
12
19
Vss
POWER
ON
RESET
LC72131M
PLL FREQUENCY
SYNTHESIZER
+B3
GND
5
7
ST
MONO
FM/AM
SD
FMDET
FM IF
IN
OSC
OUT
AFC
OSC
AM
RF
IN
AG
C
AM
OUT
DET
OUT
PILOT
IN
MPX
IN
PILOT
OUT
Lch
14
Rch
17
18
AIN
AOUT
AM
ANT
COIL
AM
OSC
COIL
AM ANT
+B3
STRQ
AM
IF
IN
AM
MIX
OUT
Rch
IFT
+B(FM)
+B(FM)
+B(FM)
Z120 TUNER UNIT (RAN0001MM)
BUFFER
AMP
FM IF
AMP
PHASE
DET.
STEREO
SW
DECODER
PILOT
CANCEL
PILOT
DET
UNIVERSAL
COUNTER
DATA SHIFT
REGISTER LATCH
12 BIT PROGRAMMABLE
DIVIDER
SWALLOW COUNTER
1/6,1/17 4bit
PHASE DETECTOR
CHARGE PUMP
REFERENCE
DIVIDER
POWER
SUPPLY
(FM:ON)
TCK
BUFFER
AMP
BUFFER
AMP
BUFFER
AMP
Summary of Contents for SAHT280 - RECEIVER
Page 11: ... Check the FL P C B as shown above Check the surround P C B as shown below ...
Page 14: ... Check the main P C B as shown below ...
Page 16: ......
Page 33: ...WIRES ...
Page 37: ...R578 ERDS2TJ473T 47K 1 4W 1 M ...
Page 39: ...R637 ERDS2TJ154T 150K 1 4W 1 M ...
Page 55: ...16 Packaging ...
Page 56: ......
