Sony MZ-R701 Посібник з експлуатації - Сторінка 36

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Sony MZ-R701 Посібник з експлуатації
MZ-R701/R701DPC
Common 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.
•
%
: indicates tolerance.
• C : panel designation.
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.
• Total current is measured with Minidisc installed.
• Power voltage is dc 3V and fed with regulated dc power
supply from external power voltage jack.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PB
(
) : REC
<
> : TUNER
∗
: Impossible to measure
• 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.
E
: PB
j
: REC (ANALOG)
l : REC (DIGITAL)
36
36
• Waveforms
1
100mV/DIV, 1µs/DIV
Approx.
220mVp-p
IC501
8
(IY) (PB mode)
2
100V/DIV, 1µs/DIV
Approx.
220mVp-p
IC501
9
(IX) (PB mode)
3
100mV/DIV, 1µs/DIV
Approx.
220mVp-p
IC501
q;
(JX) (PB mode)
4
100mV/DIV, 1µs/DIV
Approx.
220mVp-p
IC501
qa
(JY) (PB mode)
5
20mV/DIV, 500ns/DIV
Approx.
35mVp-p
IC501
1
(TE) (PB mode)
6
500mV/DIV, 500ns/DIV
Approx.
1.3Vp-p
ed
IC501
(RF OUT) (PB mode)
7
10mV/DIV, 500ns/DIV
Approx.
20mVp-p
rs
IC501
(FE) (PB mode)
1V/DIV, 2µs/DIV
8
2.5Vp-p
5.8µs
IC601
4
(CLK)
1V/DIV, 2µs/DIV
9
2.5Vp-p
5.8µs
IC901
th
(CLK)