Block Diagram - Tuner Section - Sony WM-GX221 Service Manual

6-1. BLOCK DIAGRAM – TUNER SECTION –
S1 (1/2)
US, CND, 5E
DX LOCAL
EXCEPT US, CND, 5E
FM ST MONO
EXCEPT US, CND, 5E
R5
JR3
US, CND, 5E
JR1
C1
C2
ANT CP1
A
B.P.F.
EXCEPT US, CND, 5E
L1
AM
FERRITE BAR
ANTENNA
CT1-1
CT1-1, L1
AM TRACKING
TU VCC
IC1
FM/AM RF AMP, FM/AM MIX AMP,
FM/AM OSC, FM/AM IF AMP, DET, MPX
FM-RF
IN FM
1 MIX
RF AMP FM/AM
MIX AMP
AM-RF
IN
AM
FM/AM
24
RF AMP
OSC
CV1-1
23 21 20
L2
FM RF
CT1-2, L2
FM TRACKING
CT1-3, L3 CT1-4, L4
CT1-2 CV1-2
FM FREQUENCY AM FREQUENCY
COVERAGE COVERAGE
L3
FM OSC
CT1-3 CV1-3 CV1-4 CT1-4
CV1
TUNING
X2
10.7MHz
12
CF2
FM
10.7MHz
IF IN FM FM FM
4 8
IF AMP DET MUTE
LEVEL
DET
T1
AM IF
CF1
AM
455kHz
IF IN
AM AM
7
IF AMP DET
AGC
L4
AM OSC
11 11
AF
AMP
DET-OUT MPX-IN
AF
DECODER
18 17
BUFFER
AMP
SWITCH
PD1
DIVIDER/
VCO
TUN ST
PD2
LED LED
10 11 16 15
FM
D1
S705
TU B+
BAND
AM
WM-GX221
Ver 1.2
• SIGNAL PATH
: FM
: AM
TU L, TU R
L OUT
14 B
R OUT
13