Sony CDX-L300 / CDX-L460X Service Manual ▷ View online
25
25
CDX-L300/L460X
3-6. SCHEMATIC DIAGRAM
• Refer to page 24 for Waveforms.
— CD MECHANISM SECTION (MG-393X-121//K) — • Refer to page 36 for IC Block Diagrams.
IC B/D
IC B/D
(Page 33)
Note:
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : CD PLAY
no mark : CD PLAY
26
26
CDX-L300/L460X
3-7. PRINTED WIRING BOARDS
• Refer to page 24 for Circuit Boards Location.
— CD MECHANISM SECTION (MG-393X-121//K) —
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
piéce portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• 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
f
: AM
J
: CD
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
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CDX-L300/L460X
(Page 31)
Ref. No.
Location
IC1
D-2
IC2
G-2
Q1
B-3
• Semiconductor
Location
28
28
CDX-L300/L460X
3-8. PRINTED WIRING BOARDS
• Refer to page 24 for Circuit Boards Location.
— CD MECHANISM SECTION (MG-393XA-121//K) —
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
SW1
CN2
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