Sony Aiwa CX-JN20 Service Manual page 12

6-12. SCHEMATIC DIAGRAM – MAIN Section (4/4) – •
(4/4)
B3
B4
B5
B6
∗
C673,674
B7
390p (JN20/JN30:CIS)
B8 560p (JN30:AEP,UK)
C677
B9 0.33
50V
C671
0.47
50V
C673 C675
∗
0.033
IC671
NJM2156
(Page 30)
C674 C676
∗
0.033
B10
C672
0.47
50V
BASS BOOST
ENHANCER
C678
C668
0.33
100p
50V
B11
B12
B13
B14
B15
R730 10k
S-OUT
R731 10k
CLK
R732 10k
STB
FREQ1
FREQ2
FREQ3
BOOST1
BOOST2
BOOST3
BOOST4
TBL-SENS
BU-UP
See page 40 for IC Block Diagrams.
R687 R676 R677 R678
1k 4.7k 2.2k 470
S S S
Q671 Q672 Q673
C679
C689 R674 2SK2158 2SK2158 2SK2158
220 Q671-673
0.1 3.3k
10V
FREQUENCY
CONTROL
C669
100p
R680 R681 R682
10k 6.8k 4.7k
S S S S
Q674 Q675 Q676 Q677
2SK2158 2SK2158 2SK2158 2SK2158
R671
56k
C682 Q674-677
0.1
BOOST CONTROL
JW690
10EDB40
R672
10k
R670
10k
C688 C683
C670
10 470
100p
50V 25V
BBE CONTROL,
LOADING/TABLE
MOTOR DRIVE
C732 C731 C730
100p 100p 100p
IC672
BU2092F
VDD
VSS
OE
DATA
BBE
CLK
LM-R
LCK
LM-L
FREQ1
TM-R
FREQ2
TM-L
FREQ3
BOOST4
BOOST1
BOOST3
BOOST2
(JN20/JN30:AEP,UK)
RDS-DATA
C912 C911
100p 100p
VM
TUNED
STEREO
TU-L
R679
TU-R
12k
TU-MUTE
R688
390
R761 100k FREQ1
R762 100k FREQ2
R801
R763 100k FREQ3
220
R683 R684
3.3k 470
R767 220k BOOST4
R766 220k BOOST3
R765 220k BOOST2
BOOST1 RDS-SIG
R764
220k
VM
BBE
C699
AUX-L
0.01
AUX-R
C698
0.01
D691 D692 D693
10EDB40 10EDB40 10EDB40
CD-VM
4V D024
CD-L
CD-R
4V
D671
1SS355
VM
C684
0.1 R702 R703 R704 R705
10k 10k 10k 10k
BBE
CD-VM
4V D695 1SS355
R692 10k
R691
22k
R693 1k
R695 10k
R694
22k
R696 1k
R698 10k
R701 R697
22k 22k
R699 1k
R700
22k
31 31
(JN30:CIS)
CN801
11P
CLK
CL
IFC
DO
DATA
DI
PLL-CE
CE
+9V
TUNED
STEREO
L-CH
GND
R-CH
MUTE
CN802
15P
CL
DO
DI
CE
(JN20/JN30:AEP,UK)
+9V
C913
TUNED
1000p
STEREO
L-CH
GND
(JN30:CIS)
R-CH
JR801
MUTE
0
5V
FM-SOUT
RDS INT
RDS DATA
(JN20/JN30:AEP,UK)
R685 C685
3.9k 1000p
R686 C686 C910 0.01
3.9k 1000p
FB693 C695
CN691
0.45µH 470
D694
P-GND
10EDB40
6.4V
JW692
D-GND
AMUTE
D697
D-OUT
10EDB40
3.3V
C693 1 50V
CD-L
FB691
A-GND
C694 1 50V
CD-R
Z1
CD_ON
Z2
CD_RES
C655
Z3
330p
DI
Z4
DO
C654
Z5
100p
CL
Z6
MP3_CE
C653
Z7
330p
FSYNC
Z8
WRQ
C652
Z9
1000p
DRF
Z10
CD_CE
C651
1000p
CN694
Z1
CD_ON
D-GND
Z2
C950
CD_RES
330p
Z4
DO
Z3
DI
Z5
CL
Z6
MP3_CE
Z7
FSYNC
Z8
WRQ
Z9
DRF
Z10
CD_CE
CN692
CD-VM
GND
LM-R
LM-L
TM-R
TM-L
E-1
E-2
E-3
TBL ADDRESS SENS
3.3V
OPEN SW
CX-JN20/JN30
FM 75Ω
(COAXIAL)
TUNER PACK
SUPPLIED WITH
THE ASSEMBLED
BLOCK
AM LOOP
J602 2P
L
VIDEO/AUX
R
19P
(CHASSIS)
(Page 25)
11P
(Page 35)
12P
(Page 27)