SONY CDXL300 Repair Manual

CDX-L300/L460X
3-7. PRINTED WIRING BOARDSY Refer to page 24 for Circuit Boards Location.
N CD MECHANISM SECTION (MG-393X-121//K) N
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
Y All capacitors are in ?F unless otherwise noted. pF: ??F
50 WV or less are not indicated except for electrolytics
and tantalums.
1
Y All resistors are in & and /4 W or less unless otherwise
specified.
Y%: indicates tolerance.
Yf: internal component.
Y C : panel designation.
Note:Note:
The components identi-Les composants identifiŽs par
fied by mark 0 or dottedune marque 0 sont critiques
line with mark 0 are criti-pour la sŽcuritŽ.
cal for safety.Ne les remplacer que par une
Replace only with partpiŽce portant le numŽro
number specified.spŽcifiŽ.
Y A : B+ Line.
Y Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
Y Voltages are taken with a VOM (Input impedance 10 M&).
Voltage variations may be noted due to normal produc-
tion tolerances.
Y Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
Y Circled numbers refer to waveforms.
Y Signal path.
F: FM
f: AM
J: CD
for printed wiring boards:
Y X : parts extracted from the component side.
Y Y : parts extracted from the conductor side.
Yx: parts mounted on the conductor side.
Ya: Through hole.
Y: Pattern from the side which enables seeing.
(The other layerOs 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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