Sony MZ-R55, Руководство по обслуживанию

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MZ-R55
6-9. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) — • Refer to page 49 for IC Block Diagrams.
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5
6
IC802
$º
2.3Vp-p
VOLT/DIV : 0.1V AC
TIME/DIV : 10
µ
sec
IC805
8
1.4Vp-p
• Waveforms
12kHz
32kHz
VOLT/DIV : 1V AC
TIME/DIV : 20nsec
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.
• C : panel designation.
• A : B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 3 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
• 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.