Schematic Diagram - Sony MD Walkman MZ-E33 Service Manual

6-4. SCHEMATIC DIAGRAM • Refer to page 25 for IC Block Diagrams.
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* : The electrical components differ according to the version of the
system control IC (IC801). When replacing the IC801, check its
model name and add or remove D1001 and/or R1001 as shown
below.
RU6815MF-0004 (Ver 3.0) .... Add D1001 and R1001
RU6815MF-0005 (Ver 3.2) and later .... Remove D1001 and R1001
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MZ-E33
• Waveforms (MODE:PLAY)
1
800mVp-p
VOLT/DIV : 200mV AC
IC501 @•
TIME/DIV : 5 sec
2
2.7Vp-p
23 sec
VOLT/DIV : 1V AC
IC601 #ª
TIME/DIV : 10 sec
3
2.6Vp-p
482nsec
VOLT/DIV : 500mV AC
IC601 $¡
TIME/DIV : 200nsec
4
2.0 Vp-p
16.9344 MHz
VOLT/DIV : 500mV AC
IC601 $ª
TIME/DIV : 20nsec
Note:
• All capacitors are in F unless otherwise noted. pF: F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in and 1 / W or less unless otherwise
4
specified.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : MD PLAY
• Voltages are taken with a VOM (Input impedance 10 M ).
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.
• Signal path.
J : MD
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