Sony D-EJ011 Service Manual page 7

Portable cd player
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• Note for Printed Wiring Boards and Schematic Diagrams
Note on Printed Wiring Boards.
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
a
: Through hole.
f
: internal component
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• Indication of transistor.
C
Q
These are omitted.
B
E
D
Q
These are omitted.
G
S
• Waverforms
1
IC601 yj XO
4.5 Vp-p
59.5 ns
2 V/DIV, 50 ns/DIV
2
IC801 yd XOUT4M
3.5 Vp-p
244 ns
2 V/DIV, 0.1 µ s/DIV
D-EJ011
SECTION 5
DIAGRAMS
Note on Schematic Diagrams.
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
W or less unless otherwise
4
specified.
f
: internal tolerance.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD PLAY
7
7
D-EJ011

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