Schematic Diagram - Tuner Section - Sony D-F181 Service Manual

D-F180AN/F181/F400/F411/F415
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1-5. SCHEMATIC DIAGRAM — TUNER SECTION —
• Refer to page 7 for MAIN BOARD Printed Wiring Board.
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Note on Schematic Diagram:
• 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
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specified.
• ¢ : internal component.
• C : panel designation.
Note: Note:
The components identi- Les composants identifiés par
une marque ! sont critiques
fied by mark ! or dotted
line with mark ! are criti- pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce por tant le numéro
number specified. spécifié.
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground in
service mode.
no mark : CD PLAY OR COMMON
( ) : FM
< > : AM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
w w w
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f : AM
J : CD
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