Block Diagram - Tuner Section - Sony WALKMAN WM-SR10 Service Manual

6-1. Block Diagram – Tuner Section –
C2
ANT
CP1
A
B.P.F.
L1
AM
FERRITE BAR
ANTENNA
CT1-1 CV1-1
CT1-1, L1
AM TRACKING
L2
FM RF
CT1-2, L2
FM TRACKING
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
4
MIX AMP
AM-RF
IN
AM
FM/AM
24
RF AMP
OSC
23 21 20
CT1-3, L3 CT1-4, L4
CT1-2 CV1-2
FM FREQUENCY AM FREQUENCY
COVERAGE COVERAGE
L3
FM OSC
AM OSC
CT1-3 CV1-3 CV1-4 CT1-4
CV1
TUNING
X2
10.7MHz
12
CF2
FM
10.7MHz
IF IN FM FM
8
IF AMP DET MUTE
LEVEL
DET
T1
AM IF
CF1
AM
455kHz
IF IN
AM AM
7
IF AMP DET
AGC
L4
AM
D
FM
E
11 11
AF
AMP
FM
DET-OUT MPX-IN
AF
18 17
BUFFER
PD1
DIVIDER/
VCO
TUN ST
PD2
LED LED
10 11 16 15
JR3
Q33, 34
BAND SELECT
SWITCH
D33
Q30, 32
TUNER MUTING
C
MUTING
CONTROL
WM-SR10
• SIGNAL PATH
: FM
: AM
TU L, TU R
L OUT
B
14
DECODER
R OUT
AMP
13
SWITCH
S1
FM ST MONO
R5
TU VCC