Main Board - Aiwa CX-J3000 Service Manual

– MAIN Board –
IC302 BD3881FV
28 27 26 25
1 2 3 4
IC501 TA2149N
RF GND
1
FM RF
FM RFIN 2
AM
AM LOW CUT 3
MIX
FM
MIX OUT
4
MIX
VCC 5
AM IF
AM IF IN 6
FM IF
FM IF IN 7
GND 8
AGC
AGC
9
QUAD 10
R-OUT 11
MUTE
L-OUT 12
24 23 22 21 20 19
VOLUME
VOLUME
5 6 7 8 9
FM
OSC
AM
OSC
BUFF
BUFF
1/1 OR
1/16
LEVEL
DET
ST
IF BUFF
1/8
SW
AM
DET
IF REQ
AF BUFF
FM AF
DET
ST/MO
FM/AM
VCO
DIVIDE
DECODE
18 17 16 15
BASS BASS
TREBLE
LOGIC
CONTROL
TREBLE
10 11 12 13 14
24
FM RFOUT
23
RF VCC
22 AM RFIN
FM OSC
21
20 AM OSC
19 OSC OUT
ST LED
18
17 IF REQ
16 DET OUT
MPX IN
15
14
LPF1
13
LPF2
CX-J3000/J3000M
41