Sony MZ-R700 service manual Waveforms, Common note on Schematic Diagram

MZ-G750/R700

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.

	Note:	Note:
	The components identi-	Les composants identifiés par
	fied by mark 0or dotted	une marque 0sont critiques
	line with mark 0are criti-	pour la sécurité.
	cal for safety.	Ne les remplacer que par une
	Replace only with part	piéce portant le numéro
	number specified.	spécifié.
•	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)

• Waveforms

1100mV/DIV, 1µs/DIV

Approx. 220mVp-p

IC501 8 (IY) (PB mode)

2100V/DIV, 1µs/DIV

Approx. 220mVp-p

IC501 9 (IX) (PB mode)

3100mV/DIV, 1µs/DIV

Approx. 220mVp-p

IC501 q; (JX) (PB mode)

4100mV/DIV, 1µs/DIV

Approx. 220mVp-p

IC501 qa (JY) (PB mode)

520mV/DIV, 500ns/DIV

Approx. 35mVp-p

IC501 1 (TE) (PB mode)

6500mV/DIV, 500ns/DIV

Approx. 1.3Vp-p

IC501 ed (RF OUT) (PB mode)

710mV/DIV, 500ns/DIV

Approx. 20mVp-p

IC501 rs (FE) (PB mode)

81V/DIV, 2µs/DIV

2.5Vp-p

5.8µs

IC601 4 (CLK)

91V/DIV, 2µs/DIV

2.5Vp-p

5.8µs

IC901 th (CLK)

40 40