Sony WM-FX522 - Diagrams and Schematics; Tuner Section Block Diagram

WM-FX522
1515
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – TUNER Section –
8
12
27
25
FM
IF AMP
FM
DET
AF
AMP
FM
MPX
AM
IF AMP
RF
AMP
MIX
AMP
OSC
AM
DET
IF
BUFFER
SWITCH
13
MIX
AMP
OSC
10
FMIFIN
DETOUT
19
IFCOUNT
X1
SYSTEM CONTROLLER
IC701 (1/2)
CF2
11
QUAD
16
15
L-OUT
R-OUT
141817
AMIFIN
LP2A LP2B LPF1
AMOSC
AMRFIN
AM-MIX
FM RF AMP, FM/AM MIX AMP, FM/AM OSC,
IC1 (1/2)
CF1
B.P.F.
FL1
: FM
: AM
D1 (1/2)
L4
AM FERRITE-ROD
ANTENNA
LOCAL/DX
57
VCO IN
49
BAND1
54
BAND2
55
IF REQ
65
IF IN
45
D3
L5
AM OSC
A
(Page 16)
B
(Page 16)
TUNER L-CH
R-CH
MPXIN
FM-MIX
FMRFIN
ANT
REQSW
FMRFOUT
FM/TVOSC
20
5
OSCOUT
4
29
24
2
D1 (2/2)
D4
• SIGNAL PATH
• R-ch is omitted due to same as L-ch.
L7
FM RF
L7
FM
TRACKING
CT1, L5
AM
TRACKING
CT1
FM/AM
POWER
SWITCH
MODE1
21
MODE2
22
BUFFER
5
LOW-PASS
FILTER
Q404, 408
DO
52
FM/AM IF AMP, FM/AM DET, MPX
IC1 (2/2)