Sony CFD-V3 Service Manual page 26

CFD-V3/V7/V7L
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
4
specified.
• : internal component.
f
Note:
Note:
The components identi- Les composants identifiés par
une marque 0 sont critiques
fied by mark 0 or dotted
line with mark 0 are criti- pour la sécurité.
Ne les remplacer que par une
cal for safety.
piéce por tant le numéro
Replace only with part
number specified. spécifié.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM (RADIO SECTION),
TAPE 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.
F
: FM
f
: AM
E
: PB
a
: REC
J
: CD
• Abbreviation
CND : Canadian
IT : Italian
CET : East European & Russian
26
• Waveforms
– CONTROL/POWER SECTION –
1
17.95 µsec
VOLT/DIV : 1 V AC
Q301 C
TIME/DIV : 5 µsec
2
17.95 µsec
VOLT/DIV : 1 V AC
T301
(ATT : 1/10)
TIME/DIV : 5 µsec
– CD SECTION –
1
0.7–1.0Vp-p
(LPC ON)
IC701 4
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.5 µsec
RF
2
1.1Vp-p
29.53nsec
IC701 rk
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.2 µsec
XOUT
3.1Vp-p
30Vp-p
3
(PLAY MODE)
IC701 qd
VOLT/DIV : 1 V AC
(FE) TIME/DIV : 1 msec
4
(PLAY MODE)
IC701 qg
VOLT/DIV : 20 V AC
(TE)
TIME/DIV :1 msec
0.6Vp-p
0.6Vp-p