Block Diagram - Tuner Section - Sony ZS-Y3 Service Manual

ZS-Y3
5-2. 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
20
X1
75kHz
• R-ch is omitted due to same as L-ch.
19
• SIGNAL PATH
: FM
: AM
ZS-Y3
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
RF-IN
AM AM
22
RF AMP MIX
OSC
BUFFER
-OUT
19
AM
BUFFER
OSC
20 21
L4
AM FREQUENCY
COVERAGE
L2
L4
FM OSC
AM
OSC
D3
(2/2)
D2
VT B+
LOW-PASS
FILTER
6 18 17 16
LOW-PASS
FILTER
XOUT
REFERENCE
PHASE
DIVIDER
DETECTOR/
XIN
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
AMP
DET
BUFFER
T1
AM IFT
AM
CF4 IF-IN
AM IF AM
6
AMP DET
T1
LEVEL
DET
AM IF
IF
BUFFER
17
L2
FM
FREQUENCY
COVERAGE
12 11 10
UNIVERSAL
COUNTER
1/2
SWALLOW
COUNTER
SHIFT REGISTER & LATCH
16 16
DET MPX
-OUT -IN
AF
AF
16 15 MPX MUTE
AMP
ST
IND
18 13 14
8 9 7 13
DI
2
CL
3
CCB
CE
INTERFACE
1
DO
4
L-OUT
TU L-OUT
C
12 (Page 17)
R-OUT
11 R-CH
STEREO/
MONO,
FM/AM
R DATA, R CLOCK, R CE,
R MUTING R COUNT, R MUTING
D (Page 17)
R DATA
R CLOCK
R CE
R COUNT