Sony WCS999 - Wireless Camcorder Microphone, Service Manual

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WCS-999
– 19 – – 20 – – 21 –
4-6. SCHEMATIC DIAGRAM – RX Section – • See page 22 for IC Block Diagrams.
3.9 Vp-p
10.2
µ
s
– RX BASE Board –
1 IC101 2 (OUT)
2 V/DIV, 5 µs/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 /
4
W or less unless otherwise
specified.
• C : panel designation.
• 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
under no-signal conditions.
no mark : without the signal
(
) : receive the signal
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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 : RX
• Waveforms
– TX BASE Board –
1 IC51 8 (XTALE)
200 mV/DIV, 20 ns/DIV
2 IC101 3 (EXT)
2 V/DIV, 5 µs/DIV
580 mVp-p
CH-1 : 35.05 ns
CH-2 : 35.02 ns
CH-3 : 35.00 ns
3 Vp-p
10
µ
s