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CFD-V5
6-4. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) –
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
Note: The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
•
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 (detuned) conditions.
no mark :FM (RADIO SECTION),
no mark :FM (RADIO SECTION),
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.
• Signal path.
F
: FM
f
: AM
E
: PB
a
: REC
J
: CD
z
Refer to page 30 - 31 for IC Block Diagrams.
1
2
Q301
C
T301
VOLT/DIV : 1 V AC
TIME/DIV : 5
TIME/DIV : 5
µ
sec
VOLT/DIV : 1 V AC
(ATT : 1/10)
TIME/DIV : 5
µ
sec
r
Waveforms
3.7Vp-p
17.95
µ
sec
34Vp-p
17.95
µ
sec
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