Read Sony ICF-CD73 / ICF-CD73V Service Manual 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
Click on the first or last page to see other ICF-CD73 / ICF-CD73V service manuals if exist.