22
22
CDX-L250/L430X
4-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 21 for Circuit Boards Location.
Note:
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety
.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS
AND SCHEMA
TIC 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
50 WV or less are not indicated except for electrolytics
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 BA
TT
cords.
•
V
oltages are taken with a VOM (Input impedance 10 M
Ω
).
V
oltage variations may be noted due to normal produc-
tion tolerances.
•
W
aveforms are taken with a oscilloscope.
V
oltage variations may be noted due to normal produc-
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 are indicated.
Parts
face
side:
Parts on the parts face side seen from the
(Side
A)
parts face are indicated.
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