Block Diagram - Tuner Section - Sony ZS-YN7 Service Manual

6-2. BLOCK DIAGRAM – TUNER Section –
ANT1
FM TELESCOPIC
ANTENNA
L1
FM RF
CT1, L1
CT1
FM TRACKING
D1
L3
AM FERRITE-ROD
ANTENNA
CT3
D3
(1/2)
CT3, L3
AM TRACKING
XOUT
20
X1
75kHz
• R-ch is omitted due to same as L-ch.
XIN
19
• SIGNAL PATH
: FM
: AM
ZS-YN7
FM/AM RF AMP, MIX, OSC,
FM/AM IF AMP, DET, MPX
IC1
FM
RF-IN MIX-OUT
FM FM
2 4
RF AMP MIX
FM
FM
RF-OUT
24 OSC
AM IFT
AM
RF-IN AM
AM
22
RF AMP
MIX
OSC
BUFFER
-OUT
19
AM
BUFFER
OSC
20 21
L2
L4
FM FREQUENCY
AM FREQUENCY
COVERAGE
COVERAGE
L2
L4
FM OSC
AM
OSC
D3
(2/2)
D2
VT B+
LOW-PASS
FILTER
6 18 17 16
LOW-PASS
FILTER
REFERENCE
PHASE
DIVIDER
DETECTOR/
CHARGE PUMP
12 BIT
UNLOCK
PROGRAMMABLE
DETECT
DIVIDER
FM/AM PLL
IC2
T2
FM IFT
T2
FM IF
10
FM
IF-IN
CF2
FM IF FM
7
AF
AMP DET
BUFFER
T1
AM
IF-IN
CF4
AM IF AM
6
AMP
DET
T1
LEVEL
DET
AM IF
IF
BUFFER
17
12 11 10
UNIVERSAL
COUNTER
1/2
SWALLOW
COUNTER
SHIFT REGISTER & LATCH
17 17
L-OUT
DET MPX
-OUT -IN
AF
16 15 MPX MUTE
AMP R-OUT
STEREO/
MONO,
FM/AM
ST
IND
18 13 14
R MUTING
8 9 7 13
DI
R DATA
2
R CLOCK
CL
3
CCB
CE R CE
INTERFACE
1
DO R COUNT
4
ZS-YN7
TU L-OUT
B (Page 18)
12
11 R-CH
R DATA, R CLOCK, R CE,
R COUNT, R MUTING
C (Page 18)