SONYWM-EX655电路原理图 .pdf

15 16 18 17 WM-EX655/EX668 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 1/4 W or less unless otherwise specified. U : B+ Line. H : adjustment for repair. 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 in playback mode. no mark : 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. Circled numbers refer to waveforms. Signal path. E: PB 1 250mVp-p 32.768kHz IC701 ! XTB VOLT/DIV : 50mV AC TIME/DIV : 10sec r WAVEFORM 5-3. SCHEMATIC DIAGRAM r Refer to page 19 for IC Block Diagrams. NDIP NDIP