Schematic Diagram - Sony MD Walkman MZ-E75 Service Manual

6-4. SCHEMATIC DIAGRAM

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CSP (Chip Size Package)
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MZ-E75
WAVEFORMS
r
1 4
935mVp-p
1.2Vp-p
22.579MHz
IC501 ek IC601 w;
VOLT/DIV : 0.5 V AC VOLT/DIV : 0.2 V AC
TIME/DIV : 0.5 µsec TIME/DIV : 20 µsec
(RF) (OSC0)
2 5
148mVp-p
1.2Vp-p
5.65 µ sec
IC501 rh VOLT/DIV : 0.5 V AC IC902 5 VOLT/DIV :50mV AC
TIME/DIV : 0.5 µsec TIME/DIV : 5 µsec
(RF0) (LX)
3 6
1.9Vp-p
7Vp-p
16.9344MHz
5.7 µ sec
IC551 ua IC801 qh
VOLT/DIV : 2 V AC VOLT/DIV : 0.5 V AC
TIME/DIV : 2 µsec TIME/DIV : 20 µsec
(PWM) (XOUT)
• Replacement of CXD2661GA-2 (IC601) used in this set
requires a special tool. Therefore, it cannot be replaced.
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
/ 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 1.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PLAY
• Voltages and currents are taken with a VOM (Input im-
pedance 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.
J : PLAY
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