MZ-E800
– 33 – – 34 –6-7. SCHEMATIC DIAGRAM – MAIN Board (3/4) –• See page 37 for Waveforms.
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.
•f: internal component.
•C: panel designation.
•A: B+ Line.
•Power voltage is dc 1.5V and fed with regulated dc power
supply from battery terminal.
•Voltages and waveforms are dc with respect to ground in
playback mode.
no mark : PLAYBACK
( ) : CHARGE
∗: 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.
•The voltage and waveform of CSP (chip size package)
cannot be measured, because its lead layout is different
form that of conventional IC.
*Replacement of IC801 used in this set requires a
special tool. Therefore, it cannnot be replaced.
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