Block Diagrams; Tuner - Casio ZD-3 Service Manual

TUNER

AM Loop Antenna
L1
L4
Bar
Antenna
AM RF FM RF
RF V
In Out
24 23
FM
RF
1 2
FM
RF
FM
RF In
GND
Antenna
FM Signal
AM Signal

BLOCK DIAGRAMS

L3
AM
FM
CC
OSC
OSC
20
22 21
FM AM
OSC OSC
AM
MIX
FM
MIX
3
4 5
AM Low
MIX Out
AGC
Cut
L6
FM-MONO
DET
MPX
Out
In
17
19 18
AF
AF
BUFF
FM
Mute
AM
FM
DET DET
AGC
FM
AM
IF IF
6 7 8
AM IF
V
CC
In
CF2
CF1
6
To Amplifier Block
SW1
GND V
AM BAND SW
1
FM-
Stereo
LPF2
LPF1
16 15
14
Decode
VCO
Divice
Level
DET
ST
TUN
LED LED
9 10 11
TUN
FM IF
GND
LED
In
CN3
R ch L ch
CC
2 3 4
13
ST/MO
FM/AM
12
S T
QUAD
LED
CF3