Sony CFD-V20 Service Manual page 34

CFD-V20 r SCHEMATIC DIAGRAM – CD SECTION –
r WAVEFORMS
1
4
1.2 ± 0.2 5.3Vp-p
Vp-p
140.5 µ sec
IC701 #¡ IC702 #¡
VOLT/DIV : 200mV AC
VOLT/DIV : 1V AC
(RFO)
TIME/DIV : 0.5µsec (MNT3) TIME/DIV : 50µsec
2
5
4.8Vp-p
5.3 Vp-p
242.0 µ sec
140.5 µ sec
IC702 @∞
IC702 #™
VOLT/DIV : 1V AC VOLT/DIV : 1V AC
(XPCK) TIME/DIV : 0.1msec
(MNT1) TIME/DIV : 50µsec
3
6
5.3 Vp-p
0.8 Vp-p
140.5 µ sec
16.9344 MHz
IC702 @• IC702 #∞
VOLT/DIV : 1V AC VOLT/DIV : 0.2V AC
(RFCK) TIME/DIV : 50µsec
(XTAO) TIME/DIV : 50nsec
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.
Note: Note:
The components identi- Les composants identifiés
fied by mark ! or dotted par une marque ! sont cri-
line with mark ! are cri- tiques pour la sécurité.
tical for safety. Ne les remplacer que par
Replace only with part une piéce portant le
number specified. numéro spécifié.
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : FM (Radio section), CD STOP (CD section)
PLAY (Tape section)
( ) : AM (Radio section), REC (Tape section)
• 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.
J
: CD
– 13 –
r Refer to page 2 for IC Block Diagrams.
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