– 17 –
– 18 –
– 20 –
– 19 –
5-4. SCHEMATIC DIAGRAM
r
Refer to page 21 for IC Block Diagrams.
WM-PSY02
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
¢
: 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 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
f
: AM
E
: TAPE PLAYBACK
r
Waveforms
IC401
!£
(XIN)
500 mV/DIV, 5µs/DIV
T301 (SECONDARY)
5 V/DIV, 200 ns/DIV
Q307 (COLLECTOR)
500 mV/DIV, 100 ns/DIV
Q307 (BASE)
100 mV/DIV, 100 ns/DIV
1.5 Vp-p
75.2 kHz
20.6 Vp-p
2.53 MHz
2 Vp-p
3.38 MHz
0.3 Vp-p
3.38 MHz
1
3
2
4
Summary of Contents for Walkman WM-PSY02
Page 10: ......
