MZ-G750/R700
4040
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 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
k: REC (ANALOG)
l: REC (DIGITAL)
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 portant le numéro
spécifié.
1

IC5018 (IY) (PB mode)

2

IC5019 (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