Schematic Diagram - Hand Main Section - Sony SPP-M937 Service Manual

5-7. SCHEMATIC DIAGRAM – HAND MAIN SECTION –
SPP-M937
Waveforms (HANDSET)
z
1
810 mVp-p
4MHz
U6 qh XOUT
VOLT/DIV : 0.2 V AC
TIME/DIV : 1 µsec
2
812 mVp-p
32.768 µsec
VOLT/DIV : 0.2 V AC
U6 el XOUT
TIME/DIV : 10 µsec
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.
• : B+ Line.
• Power voltage is dc 3.6 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground in
test mode.
• 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.
• Signal path.
N : RX
O : TX
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