Schematic Diagram (1/2) - Sony WM-FX671 Service Manual

• Waveform
1
10µsec/div
TP32
5V/div
51.7kHz

6-3. SCHEMATIC DIAGRAM (1/2)

1 2 3 4
A
B
C
D
E
F
G
H
I
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Note
( ) : FM
• All capacitors are in µF unless otherwise noted. pF: µµF
[ ] : AM
50 WV or less are not indicated except for electrolytics
< > : PLAY (TAPE)
and tantalums.
• All resistors are in Ω and • Voltages are taken with a VOM (Input impedance 10 MΩ).
1 / W or less unless otherwise
4
Voltage variations may be noted due to normal produc-
specified.
tion tolerances.
• % : indicates tolerance.
• U : B+ Line. • Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
• C : panel designation.
• H : adjustment for repair. tion tolerances.
• Circled numbers refer to waveforms.
• Power voltage is dc 1.5 V and fed with regulated dc power
• Signal path.
supply from battery terminal.
F : FM
• Voltages and waveforms are dc with respect to ground
E
: PLAY (TAPE)
under no-signal (detuned) conditions.
no mark : FM/AM, STOP (TAPE)
5 6 7 8 9 10 11 12 13 14
— 20 —
15 16 17 18 19
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WM-FX671
20 21