Schematic Diagram (2/2) - Sony WM-EX2000 Service Manual

WM-EX2000
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6-4. SCHEMATIC DIAGRAM MAIN (2/2) SECTION • Refer to page 22 for IC Block Diagrams. • Refer to page 23 for IC Pin Function Description.
• Waveform
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1
IC601 456 Q603 80qs
150 Hz 0.5V/div
150 Hz 0.5V/div
5µsec/div
2µsec/div
2 6
IC601 0 IC701 5
444 Hz 0.5V/div 100 kHz 1V/div
1µsec/div 5µsec/div
T E
L 1 3 9 4 2 2 9 6 5 1 3
3 7
IC601 wkwle; IC702 wk
150 Hz 0.2V/div 4 MHz 1V/div
5µsec/div 0.2µsec/div
4
Q603 135
150 Hz 0.5V/div
5µsec/div
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 / W or less unless otherwise
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specified.
• : internal component.
f
• C : panel designation.
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 1.3 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
w w w
under no-signal (detuned) conditions.
no mark: PLAY
• 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.
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