Diagrams; Block Diagram - Tuner Section - Sony WM-SR1 Service Manual

WM-SR1
6-1. BLOCK DIAGRAM – TUNER Section –
EXCEPT US, Canadian, 5E models
ANT B.P.F.
A
FL1
(Page 14)
D70
L1
AM
FERRITE-ROD
ANTENNA
LOCAL/DX
SWITCHING
Q70
CT1-1, L1
US, Canadian,
AM TRACKING
5E models
05
SECTION 6

DIAGRAMS

FM/AM RF AMP, FM/AM MIX AMP,
FM/AM OSC, FM/AM IF AMP, DET, MPX
IC1
FM RF
IN
FM
1
FM/AM
RF AMP
MIX AMP
AM RF
IN
AM
FM/AM
24
RF AMP
OSC
CT1-1 CV1-1
23 21 20
L2
FM RF
CT1-2, L2
FM TRACKING
CT1-3, L3
CT1-2 CV1-2
FM FREQUENCY AM FREQUENCY
COVERAGE
L3
FM OSC
CT1-3 CV1-3
CV1
TUNING
– 11 –
X1
10.7MHz
12
FM/AM CF1 FM
MIX OUT 10.7MHz IF IN
FM FM
4 8
IF AMP DET
LEVEL
DET
T1
AM IF
CF2 AM
455kHz IF IN
AM AM
7
IF AMP DET
AGC
CT1-4, L4
COVERAGE
L4
AM OSC
CV1-4 CT1-4
AF
DET MPX
AMP
FM
OUT IN
AF
MUTE
18 17
BUFFER
PD1
DIVIDER/
VCO
TUN ST
PD2
LED LED
10 11 16 15
EXCEPT US, Canadian,
5E models
US, Canadian,
5E models
FM/AM BAND
SELECT SWITCH
Q33, 34
FM B+
D33
MUTING
AM B+
CONTROL SWITCH
FM B+
Q30 – 32
– 12 –
• SIGNAL PATH
: FM
: AM
TUNER L/R
L-OUT
B
14
DECODER
R-OUT
AMP
13 (Page 13)
SWITCH
EXCEPT US, Canadian,
5E models
S2 S2
FM MODE FM SENS
MONO LOCAL
DX
ST
US, Canadian,
5E models
TUNER MUTE
C
(Page 13)