CFD-S28L
– 32 –
– 33 –
– 34 –
6-7.
SCHEMATIC DIAGRAM – MAIN Section (1/3) –
•
See page 45 for IC Block Diagrams.
• Waveforms
– MAIN Board (1/3) –
1
Q323 Collector (REC mode)
20 V/DIV, 20 µs/DIV
2
Q322 Emitter, Base
Q323 Emitter, Base
Q324 Collector (REC mode)
5 V/DIV, 20 µs/DIV
3
Q324 Base, Q325 Collector (REC mode)
50 mV/DIV, 10 µs/DIV
4
Q301 Base (REC mode)
500 mV/DIV, 10 µs/DIV
5
Q301 Collector (REC mode)
1 V/DIV, 10 µs/DIV
34.4 Vp-p
20.8
µ
s
9.8 Vp-p
20.8
µ
s
128 mVp-p
1 Vp-p
20.8
µ
s
20.8
µ
s
3.6 Vp-p
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.
Ω
and
1
/
4
W or less unless otherwise
: nonflammable resistor.
• Power voltage is dc 9 V and fed with regulated dc power
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TAPE PLAY
(
) : TAPE REC
• 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
: TUNER (FM/MW/LW)
E
: TAPE PLAY
a
: TAPE REC
J
: CD PLAY
Note: The components identified by mark
!
or dotted line
!
are critical for safety.
Replace only with part number specified.
(Page 28)
(Page 36)
(Page 37)
(Page 44)
w w w
.
x i a o y u 1 6 3 .
c o m
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3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
