Block Diagrams; Tuner - Casio ZD-3 Service Manual

TUNER

AM Loop Antenna
L1
L4
Bar
Antenna
AM RF FM RF
RF V
CC
In Out
22
24 23
AM
MIX
FM
RF
3
1 2
FM
RF AM Low
FM
RF In GND
Antenna
FM Signal
AM Signal
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BLOCK DIAGRAMS

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