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5-4.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
z
: 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
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• MAIN board is multi-layer printed board. However, the patterns
of intermediate-layer have not been included in the diagram.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
1
• All resistors are in Ω and
/
W or less unless otherwise
4
specified.
•
%
: indicates tolerance.
• C : panel designation.
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 4.5 V and fed with regulated dc power
supply from DC IN jack (J401).
• Voltages and waveforms are dc with respect to ground in
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 (ANALOG OUT)
c : CD PLAY (OPTICAL OUT)
• Waveforms
1 IC404 9 (CLK)
2.0 Vp-p
950 ns
2 IC601 w; (CLOK)
2.0 Vp-p
950 ns
3 IC601 es (R4M)
2.5 Vp-p
236 ns
4 IC601 rk (XTAO)
2.4 Vp-p
59.1 ns
5 IC601 if (RFAC) (CD play mode)
450 to 650
mVp-p
13
13
6 IC601 ik (RFDC) (CD play mode)
400 to 600
mVp-p
7 IC403 qd (CLOK)
2.0 Vp-p
950 ns
8 IC801 2 (XIN)
2.5 Vp-p
236 ns
9 IC801 qk (MSCK)
2.0 Vp-p
950 ns
D-EJ985
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