12
NW-E002F/E003F/E005F
SECTION 4
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
µ
F 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 M
Ω
).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• 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.
surface
CSP (Chip Size Package)
Lead layout of conventional IC
C
B
These are omitted.
E
Q
•
Waveforms
– MAIN Board –
1
IC101
<zz,
(TEX)
200 mV/DIV, 40 ns/DIV
0.8 Vp-p
83.3 ns
2
IC101
<zzb
(EXTAL)
22.2 ns
0.8 Vp-p
200 mV/DIV, 10 ns/DIV
