26
CFD-V8L
• Waveforms
Note on Schematic Diagram:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
Note:
The components identified by mark
0
or dotted line with
mark
0
are critical for safety.
Replace only with part number specified.
•
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 M
Ω
).
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
– CONTROL/POWER SECTION –
3.1Vp-p
17.95
µ
sec
30Vp-p
17.95
µ
sec
– CD SECTION –
0.7–1.0Vp-p
(LPC ON)
1.1Vp-p
29.53nsec
0.6Vp-p
0.6Vp-p
Q301
C
VOL/DIV : 1 V AC
TIME/DIV : 5
µ
sec
2
T301
VOL/DIV : 1 V AC
(ATT : 1/10)
TIME/DIV : 5
µ
sec
1
IC701
4
RF
VOL/DIV : 0.5 V AC
TIME/DIV : 0.5
µ
sec
2
IC701
rk
XOUT
VOL/DIV : 0.5 V AC
TIME/DIV : 20 nsec
1
3
IC701
qd
(FE)
(PLAY MODE)
VOL/DIV : 0.5 V AC
TIME/DIV : 1 msec
4
IC701
qg
(TE)
(PLAY MODE)
VOL/DIV : 0.5 V AC
TIME/DIV : 1 msec
Содержание CFD-V8L
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