D-E340/E341
14
Note on Printed Wiring Boards:
Note:
•
X
: parts extracted from the component
side.
•
a
: Through hole.
•
: 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 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.
r
IC BLOCK DIAGRAMS
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F 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 specifed.
•
f
: internal component.
Note:
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
•
A
: B+ Line.
• Power voltage is dc 3 V and fed with regulated dc power supply
from battery terminal.
• Voltages are dc with respect to ground under no-signal conditions.
no mark : PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler
ances.
• Circled numbers refer to waveforms.
• Signal path.
E
: CD PLAY
Note on Schematic Diagram:
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Waveforms
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.2
VOLT/DIV : 0.5 V AC
TIME/DIV : 50 nsec
VOLT/DIV : 0.5 V AC
TIME/DIV : 1
w w w . x i a o y u 1 6 3 . c o m
9
9
2
8
9
4
2
9
8
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
