– 9 – – 11 –– 10 –
r
SCHEMATIC DIAGRAM
WM-FX453/FX455
Note :
• All capacitors are in µF unless otherwise noted. pF: µµF
50WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in and
1
/
4
W or less unless otherwise
specified.
• ¢ : internal component.
•
B +
: B+ Line
•
: adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power supply
from external power voltage jack (J302).
• Voltage and waveforms are dc with respect to ground under
no-signal ( detuned ) conditions.
no mark : FM (RADIO SECTION), PLAY (TAPE SECTION)
( ) : AM
r
WAVEFORM
1
IC701 @¢
1.83Vp-p
VOLT/DIV : 0.5V AC
TIME/DIV : 5µsec
75kHz
• Voltages are taken with a VOM ( Input impedance
10M ). Voltage variations may be noted due to
normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal
production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
: FM : PB
• Abbreviation
CND : Canadian
EE : East European
IT : Italian
5E : Indication of country of origin
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
To Next Page
Loading...
Need help?
General
