Sony WM-GX221 - Tuner Section Block Diagram

1111
WM-GX221
6-1. BLOCK DIAGRAM – TUNER SECTION –
• SIGNAL PATH
: FM
: AM
1
4 8
24
2123
FM
RF AMP
FM/AM
MIX AMP
FM/AM
OSC
FM
IF AMP
DECODER
AMP
SWITCH
DIVIDER/
VCO
FM
DET
LEVEL
DET
AM
DET
FM
MUTE
AF
BUFFER
AM
IF AMP
PD1
PD2
AM
RF AMP
7
FM-RF
IN
MIX
CF2
10.7MHz
X2
10.7MHz
CF1
455kHz
12
FM
IF IN
14
13
L OUT
R OUT
151610
AM
IF IN
LP2 BAND
LP1 MO-ST
TUN LED
FM OSC
20
AM OSC
L1
AM
FERRITE BAR
ANTENNA
FM-RF OUT
AM-RF
IN
L2
FM RF
FM/AM RF AMP, FM/AM MIX AMP,
FM/AM OSC, FM/AM IF AMP, DET, MPX
IC1
CT1-2 CV1-2
CV1
TUNING
CT1-1 CV1-1
L3
FM OSC
CT1-3 CV1-3
L4
AM OSC
CT1-4CV1-4
CT1-3, L3
FM FREQUENCY
COVERAGE
CT1-4, L4
AM FREQUENCY
COVERAGE
CT1-1, L1
AM TRACKING
CT1-2, L2
FM TRACKING
T1
AM IF
B.P.F.
CP1
ANT
A
TU L, TU R
B
11
ST LED
AGC
TUN
LED
ST
LED
DET-OUT
AF
AMP
MPX-IN
QUAD
18 17
TU VCC
EXCEPT US, CND, 5E
EXCEPT US, CND, 5E
EXCEPT US, CND, 5E
US, CND, 5E
US, CND, 5E
S1 (1/2)
DX LOCAL
FM ST MONO
BAND
D1
TU B+
S705
FM
AM
R5
JR3
JR1
C1
C2
Ver 1.2