Schematic Diagram - Main Section (1/3) - Sony PMC-DR50 Service Manual
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Also See for PMC-DR50:
- Operating instructions manual (48 pages) ,
- Service manual (54 pages)
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Q Q
5-5. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) –
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
.
– 33 –
x
a o
u 1 6 3
y
i
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Q
Q
3
7
6
3
1
c o
.
– 34 –
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2
4
9
9
8
5
1
5
0
8
9
2
4
9
m
– 35 –
PMC-DR50
2
9
9
Waveforms – MAIN SECTION (1/3) –
z
1
1.5Vp-p
75kHz
VOLT/DIV : 0.5 V AC
IC3 wa
TIME/DIV : 5 msec
8
2
9
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.
•
f
: internal component.
• U : B+ Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
) : AM
• 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
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