Schematic Diagram - Sony WM-PSY02 Service Manual

5-4. SCHEMATIC DIAGRAM

r Refer to page 21 for IC Block Diagrams.
– 17 – – 18 –
r Waveforms
IC401 !£ (XIN)
500 mV/DIV, 5µs/DIV
1
75.2 kHz
T301 (SECONDARY)
5 V/DIV, 200 ns/DIV
2
2.53 MHz
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
specified.
• ¢ : internal component.
• C : panel designation.
• U : B+ Line.
• Power voltage is dc 3V 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
<< >> : TAPE PLAYBACK
• 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.
F : FM
f : AM
E : TAPE PLAYBACK
– 19 –
WM-PSY02
Q307 (COLLECTOR)
500 mV/DIV, 100 ns/DIV
3
1.5 Vp-p
2 Vp-p
3.38 MHz
Q307 (BASE)
100 mV/DIV, 100 ns/DIV
4
0.3 Vp-p
20.6 Vp-p
3.38 MHz
1 / W or less unless otherwise
4
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