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MZ-R37
4. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) —
Note:
• 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.
•
f
: internal component.
• C : panel designation.
• A : B+ Line.
• Power voltage is dc 4.5 V 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
∗
: 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.
c : REC (digital)
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5
IC801
r;
2.2Vp-p
12kHz
VOLT/DIV : 1V AC
TIME/DIV : 20nsec
• Waveforms
Approx. 0.5Vp-p
IC501 wl
IC601
qa
2.8Vp-p
IC501
ek
IC601
qj
2.6Vp-p
22.5MHz
1.0±0.3Vp-p
VOLT/DIV : 1V AC
TIME/DIV : 20nsec
VOLT/DIV : 0.5V AC
TIME/DIV : 1µsec
VOLT/DIV : 0.1V AC
TIME/DIV : 0.1msec
VOLT/DIV : 1V AC
TIME/DIV : 5msec
1
2
3
4
13.4msec