Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•
: 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
However, the patterns of layers 2 and 3 have not been included in this diagrams.
*Replacement of IC801 used in this set requires a spe- cial tool.
• Lead Layouts | surface |
Lead layout of conventional IC | CSP (chip size package) |
Note on Schematic Diagram:
•All capacitors are in ∝ F unless otherwise noted. pF: ∝∝ 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 specified.
•% : indicates tolerance.
•C : panel designation.
Note: The components identified by mark 0or dotted line with mark 0are critical for safety.
Replace only with part number specified.
•A : B+ Line.
•Total current is measured with MD installed.
•Power voltage is dc 3 V and fed with regulated dc power supply from DC IN 3 V jack (J601).
•Voltages and waveforms are dc with respect to ground in playback mode.
no mark : PLAYBACK
( ) : REC
〈〈〉〉 : USB
∗: Impossible to measure
•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.
E : PLAYBACK
j : REC (ANALOG IN)
l : REC (DIGITAL IN)
F : USB CHECK OUT
*Replacement of IC801 used in this set requires a spe- cial tool.
•The voltage and waveform of CSP (chip size package) cannot be measured, because its lead layout is different form that of conventional IC.
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