MZ-G755
36
36
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
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
C
: panel designation.
•
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 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.
E
: PB
j
: REC (ANALOG)
l
: REC (DIGITAL)
1
IC501
8
(IY) (PB mode)
2
IC501
9
(IX) (PB mode)
Approx.
220mVp-p
3
IC501
q;
(JX) (PB mode)
Approx.
220mVp-p
• Waveforms
100mV/DIV, 1µs/DIV
100V/DIV, 1µs/DIV
100mV/DIV, 1µs/DIV
Approx.
220mVp-p
4
IC501
qa
(JY) (PB mode)
Approx.
220mVp-p
100mV/DIV, 1µs/DIV
5
IC501
1
(TE) (PB mode)
Approx.
35mVp-p
20mV/DIV, 500ns/DIV
6
IC501
ed
(RF OUT) (PB mode)
500mV/DIV, 500ns/DIV
7
IC501
rs
(FE) (PB mode)
10mV/DIV, 500ns/DIV
8
IC601
4
(CLK)
2.5Vp-p
5.8µs
1V/DIV, 2µs/DIV
9
IC901
th
(CLK)
2.5Vp-p
5.8µs
1V/DIV, 2µs/DIV
Approx.
1.3Vp-p
Approx.
20mVp-p
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.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Summary of Contents for Walkman MZ-G755
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Page 51: ...51 MZ G755 MEMO ...
