2
NW-E002F/E003F/E005F
DIAGRAMS
Note on Schematic Diagram:
• 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
/
4
W or less unless otherwise speci-
fied.
•%: indicates tolerance.
• C : panel designation.
• : B+ Line.
•Voltages and waveforms are dc with respect to ground under
no-signal (detuned) conditions.
no mark : PLAY
•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tol-
erances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tol-
erances.
• Circled numbers refer to waveforms.
• Signal path.
J : PLAY BACK
F : FM
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.
Caution:
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
• These boards are multi-layer printed board.
However, the patterns of intermediate-layer have not been in-
cluded in the diagram.
*
Replacement of IC101, IC201 on MAIN board requires
a special tool.
• Lead Layouts
• Indication of transistor.
• Waveforms
– MAIN Board –
1
IC101 <zz, (TEX)
2
IC101 <zzb (EXTAL)
200 mV/DIV, 40 ns/DIV
0.8 Vp-p
83.3 ns
22.2 ns
0.8 Vp-p
200 mV/DIV, 10 ns/DIV
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