WM-GX670/GX674
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6-3. SCHEMATIC DIAGRAM (1/2)
Note
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
U
: B+ Line.
•
C
: panel designation.
•
H
: adjustment for repair.
• Power voltage is dc 1.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM/AM, STOP (TAPE)
(
) : FM
[
] : AM
<
> : PLAY (TAPE)
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
F
: FM
E
: PLAY (TAPE)
a
: REC (TAPE)
• Waveform
51.7kHz
1
TP32
10
µ
sec/div
5V/div
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