Schematic Diagram (Wm-Fx453: Us Model Only) - Sony Walkman wm-fx453 Service Manual

SCHEMATIC DIAGRAM (WM-FX453 : US model only)
r
Q Q
3 7 6 3 1 5 1 5 0
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
.
– 9 –
x a o u 1 6 3
y
i
http://www.xiaoyu163.com
8
Q Q
3 7 6 3 1
c o
.
– 10 –
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2 4
9 9 8
5 1 5 0 8 9 2 4 9
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 / W or less unless otherwise
4
specified.
• : internal component.
¢
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
supply from external power voltage jack (J302).
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM (RADIO SECTION),
PLAY (TAPE SECTION)
( ) : AM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
m
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
: PB
– 11 –
WM-FX453/FX455
2
9 9
8 2 9 9
Waveforms
r
1
1.9 Vp-p
75 kHz
VOLT/DIV : 0.5 V AC
IC701 @¢
TIME/DIV : 5 µsec
2
2.6 Vp-p
3 MHz
VOLT/DIV : 0.5 V AC
Q401 C
TIME/DIV : 0.1 µsec