Schematic Diagram - Sony SRF-T615 Service Manual

4-4. SCHEMATIC DIAGRAM

r Refer to page 18 for IC Block Diagrams.
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SRF-T615
WAVEFORMS
r
1
1.7 Vp-p
75 kHz
IC502 wk
VOLT/DIV : 0.5 V AC
X OUT TIME/DIV : 5 µsec
2
13.2 Vp-p
466 nsec
VOLT/DIV : 2 V AC
T601
TIME/DIV : 0.2 µsec
3
230 mVp-p
343 nsec
Q603 BASE
VOLT/DIV : 50 mV AC
TIME/DIV : 0.1 µsec
4
3.5 Vp-p
319 nsec
Q603 COLLECTOR
VOLT/DIV : 1 V AC
TIME/DIV : 0.1 µsec
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.
• U : B+ Line.
• H : adjustment for repair.
• 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
• 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
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