Sony ICF-CD73 / ICF-CD73V Service Manual ▷ View online
ICF-CD73/CD73V
21
21
6-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 6 V and fed with regulated dc power
supply from pin
1
and
3
of CNP901 on the JACK board.
• Power voltage is dc 3 V and fed with regulated dc power
supply from pin
2
and
3
of CNP901 on the JACK board.
no mark : FM/TV (2 – 6 ch)
(
(
) : AM
[
] : TV (7 – 13 ch)/WEATHER (1 – 7 ch)
〈〈
〉〉
: CD PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM/TV (2 – 6 ch)
L
: TV (7 – 13 ch)/WEATHER (1 – 7 ch)
f
: AM
J
: CD PLAY
• Abbreviation
CND : Canadian model
IT
IT
: Italian model
MX
: Mexican model
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
z
: Through hole.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
• Circuit Boards Location
LCD board
SW board
tuner board
power board
key board
relay board
jack board
CD board
Ver. 1.1
ICF-CD73/CD73V
22
22
R722
L701
R727
R725
R726
R728
R729
R730
C739
R731
C741
C746
R744
C744
R701
R704
R705
R703
R710
R714
R715
R713
R712
C711
C715
R746
JC703
R716
C717
R747
C718
C719
C728
JC701
R771
C774
R769
R773
R772
R707
R702
C742
R735
R734
R736
R738
R737
R739
C737
C735
C733
C732
C734
R720
R718
R721
C725
C724
JC702
R732
C729
R724
R723
FB701
C736
C738
R742
C743
R733
R741
R740
C706
C704
C705
R743
R719
R717
E
C
B
Q701
C750
C780
C701
C702
C703
R706
C709
C712
C714
C710
C716
R745
C766
C779
C754
R759
R762
R757
R760
R754
R751
C755
C756
C758
C757
R756
R753
C781
R770
C768
C773
C763
C764
C761
C762
R709
IC701
E
C
B
Q702
L702
Q705
E
C
B
Q704
E
C
B
Q703
IC702
C760
JW725
13
12
1
2
CNP702
JW720
JW724
JW719
JW723
JW722
JW721
C749
+
1
3
20
19
2
1
CNP701
JW715
JW714
JW712
JW713
C747
+
+
C745
+
C740
X701
JW718
JW717
JW716
C721
+
JW711
JW710
JW707
JW709
+
C708
C753
+
C713
+
JW708
C767
+
JW706
JW702
JW701
+
C759
L750
JW703
JW705
JW704
D701
21
40
20
1
(11)
11
1-687-325-
CD BOARD
E
POWER BOARD
CNP303
D
LCD BOARD
CNP402
60
61
21
20
1
80
40
41
16
15
2
1
CNP705
JW791
JW792
JW793
20
19
2
1
CNP704
JW795
JW796
JW797
JW794
1
6
C777
C778
CNP706
OPTICAL
PICK-UP
BLOCK
(KSM-900AAA)
M702
(SPINDLE)
M
M
M701
(SLED)
S701
(LIMIT)
ON: When the optical pick-up
os inner position
(11)
11
1-687-324-
RELAY BOARD
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
TP
(VC)
TP
(RF)
TP
(TE)
6-6.
PRINTED WIRING BOARD – CD Section –
•
See page 21 for Circuit Boards Location.
:Uses unleaded solder.
D701
B-5
IC701
E-3
IC702
B-4
Q701
G-4
Q702
D-2
Q703
B-3
Q704
B-2
Q705
B-1
• Semiconductor
Location
Ref. No.
Location
(Page 30)
(Page 28)
ICF-CD73/CD73V
23
23
6-7.
SCHEMATIC DIAGRAM – CD Section –
•
See page 33 for Waveforms.
•
See page 32 for IC Block Diagrams.
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
C750
BP702
BP703
BP704
C715
C716
C706
C712
C709
C711
C710
C714
C713
C753
C754
Q702
R746
R747
BP701
C746
C747
R742
R709
R706
R713
R715
R707
R710
R712
R714
R704
R705
C703
R701
C701
R702
R703
R744
C749
R733
R740
R741
C744
C745
C743
R738
R739
C740
R735
R737
R736
R734
C741
C742
R732
C739
R728
R729
R730
R731
R726
R725
R727
C732
C733
C734
C735
X701
R723
FB701
C728
C719
R719
R720
R718
R717
R721
R722
R716
C718
IC701
R759
R753
R756
R762
R754
R760
R757
C755
C756
C757
C758
C773
Q703
R751
R769
R770
R771
R772
R773
C766
C760
C759
C774
C767
L750
C738
C721
Q704
C779
C781
C717
R743
C778
C777
CNP705
CNP706
CNP701
CNP704
S701
M701
C768
C762
C761
C763
C764
D701
C737
C736
C780
CNP702
L701
JC701
C729
C724
C725
Q705
C705
C708
JC703
IC702
M702
L702
R745
R724
TP
TP
TP
C702
Q701
JC702
0.1
100p
0.1
0.1
4700p
4700p
1
0.1
0.1
100
4V
100
4V
0.1
2SC4081
100k
220k
1000p
47
10V
10
4.7k
4.7k
470k
470k
10k
10k
220k
220k
470
1k
22p
10k
0.047
4.7k
22k
100
100
4V
47k
220
1k
0.1
100
4V
0.1
2.2k
10k
100
4V
470
470
220
220
0.047
1
2.2k
0.1
100
100
1k
100
1k
1k
1k
22p
22p
22p
0.01
16.9344MHz
470
0.01
0.01
100
100
47
47
0
0
100
0.1
LC78646E-US-E
22k
10k
22k
22k
47k
47k
47k
0.022
0.022
0.022
0.022
0.1
DTC115EUA
22k
22k
4.7k
10k
10k
47k
0.1
0.1
470
10V
10V
0.1
10
10V
1000p
470
4V
DTA144EUA
0.1
1000p
1000p
0
1
1
16P
6P
20P
20P
0.022
0.1
1
47p
220p
1N4002
1000p
22p
0.1
13P
0
0
0.01
0.01
0.01
2SB1184
4700p
1
50V
0
BH6575FV
47k
22k
(VC)
(TE)
(RF)
0.1
KTN2907AS-RTK
0
SP+
S
P+
SP-
SP-
SL-
SL-
SL+
SL+
FCS+
FCS+
FCS-
FCS-
TRK-
TR
K-
TRK+
TRK+
A2
A3
A4
A2
A3
A4
A1
A1
B1
B2
B3
B4
B5
B6
B7
B8
B9
B1
B2
B3
B4
B5
B6
B7
B8
B9
FCS+
FCS+
FCS-
FCS-
TRK+
TRK+
TRK-
TRK-
SL+
SL+
SL-
SL-
SP-
SP-
SP+
SP+
LIM
LIM
F
F
E
E
PD1
PD2
PD1
PD2
LD
LD
PD
PD
F
VCC
SLCIST
EFMIN
RF
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
F
D
O
S
P
D
O
S
L
D
O
G
P
D
A
C
C
O
N
T
4
C
O
N
T
5
S
B
C
K
/C
O
N
T
6
S
B
C
K
/F
G
D
E
F
E
C
T
F
S
E
Q
M
O
N
I1
M
IN
I2
M
O
N
I3
M
O
N
I4
M
O
N
I5
(3
.3
V
)V
S
S
V
D
D
D
O
U
T
T
ES
T
LVDD
LCHO
LVSS
RVSS
RCHO
RVDD
XVDD
XOUT
XIN
FSX/16MIN
XVSS
C2F
EFLG
ASLRCK
ASDACK
ASDFIN
LRSY
DATACK
DATA
C
E
C
L
D
I
D
O
D
R
F
V
D
D
5
V
S
S
C
O
N
T
3
C
O
N
T
2
CO
N
T
1
P
D
O
1
P
D
O
2
V
V
S
S
P
C
K
IS
T
V
V
D
D
F
R
L
D
S
L
D
D
SLCO
TX
TY
AUTOMATIC
POWER CONTROL
RF AMP,FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
CLV SERVO,D/A CONVERTER
GND
LD PD
LD LD
VC
PD1
PD2
E
VR
GND
LIM
SP+
SP-
SL-
SL+
FCS+
TRK+
FCS-
TRK-
F
X
FY
S
P
Y
S
P
X
S
L
X
S
L
Y
DRF
DO
DI
CL
CE
FSEQ
WRQ
RES
RCH
LCH
DGND
+3.3V
CD ON
R
E
S
W
R
Q
16MOUNT
V
/P
T
R
K
-
T
R
K
+
F
C
S
-
F
C
S
+
P
G
N
D
1
FIL
4
FIL3
FIL
2
F
IL
1
V
R
E
F
FC
S
IN
T
R
K
IN
S
L
IN
S
P
IN
R
E
S
E
T
M
U
T
E
1
M
U
T
E
3
4
C
LK
O
F
F
S
TA
R
T
E
O
E
I
V
S
Y
S
S
W
V
G
L
G
P
G
N
D
3
G
N
D
R
E
G
B
C
D
IN
C
T
S
O
FT
S
P
R
T
P
G
N
D
2
S
P
+
S
P
-
S
L
-
S
L
+
P
V
C
C
F
VCC
GND
LD PD
LD LD
VC
PD1
PD2
E
VR
GND
LIM
SP+
SP-
SL-
SL+
FCS+
TRK+
FCS-
TRK-
NC
GND
(LIMIT)
PGND
PVCC
DGND
1
3
+3.3V
REGULATOR
MUTING
SWITCH
R
E
G
O
Q703,704
CD ON
SWITCH
COIL DRIVE,
FOCUS/TRACKING
SPINDLE/SLED
MOTOR DRIVE,
POWER CONTROL
(SLED)
(SPINDLE)
10
µH
220
µ
H
OPTICAL
PICK-UP
BLOCK
(KSM-900AAA)
(Page 31)
(Page 29)
Ver. 1.1
ICF-CD73/CD73V
24
24
6-8.
PRINTED WIRING BOARD – TUNER Section (ICF-CD73) –
•
See page 21 for Circuit Boards Location.
:Uses unleaded solder.
C77
C78
(UK, IT)
(CND, MX)
(UK, IT)
JC24
IC2
IC1
TUNER BOARD
1-688-455-
11
(11)
L4
L3
AM FERRITE-ROD
ANTENNA
L2
T2
T1
L1
(SHIELD CASE)
TP
(VT)
TP
(GND)
TP
(ANT)
ANT1
FM LEAD WIRE
ANTENNA
1
2
3
4
5
6
7
8
9
10
A
B
C
D
E
1
11
LCD
BOARD
B
C13
(CND, MX)
(Page 28)
D1
C-7
D2
C-6
D3
C-6
D10
B-9
D11
B-9
IC1
D-7
IC2
D-3
• Semiconductor
Location
Ref. No.
Location
Ver. 1.1
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