Read Sony CFD-V8 Service Manual online
26
CFD-V8
• Waveforms
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
• 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),
no mark : FM (RADIO SECTION),
TAPE PLAY (TAPE SECTION)
(
) : AM (RADIO SECTION),
REC (TAPE SECTION)
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: PB
a
: REC
J
: CD
• Abbreviation
CND : Canadian
CET
CET
: East European & Russian
IT
: Italian
SP
: Singapore
AUS
: Australian
TW
: Taiwan
KR
: Korean
TH
: Thai
1
2
Q301 C
T301
VOLT/DIV : 1 V AC
TIME/DIV : 5
TIME/DIV : 5
µsec
VOLT/DIV : 1 V AC
(ATT : 1/10)
TIME/DIV : 5
µsec
– CONTROL/POWER SECTION –
3.1Vp-p
17.95
µsec
30Vp-p
17.95
µsec
– CD SECTION –
1
IC701 4
RF
2
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.5
TIME/DIV : 0.5
µsec
IC701 rk
XOUT
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.2
TIME/DIV : 0.2
µsec
0.7–1.0Vp-p
(LPC ON)
1.1Vp-p
29.53nsec
3
IC701 qd
(FE)
4
VOLT/DIV : 0.5 V AC
TIME/DIV : 1 msec
TIME/DIV : 1 msec
IC701 qg
(TE)
VOLT/DIV : 0.5 V AC
TIME/DIV :1 msec
TIME/DIV :1 msec
0.6Vp-p
0.6Vp-p
(PLAY MODE)
(PLAY MODE)
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ver. 1.6
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