Voice Cannot Be Transmitted To Other Party (Outgoing Call) - Toshiba FD-4809 Service Manual

6. Voice cannot be transmitted to other party (outgoing call).

Can the base and handset be
connected?
OK
The 1 kHz, 3.3mV sine
wavefor m i s a p p l i e d t o
MC601 + side, can the 1 kHz
sine waveform from pin 12 of
IC602 be fed?
OK
TX output signal from the
handset is detected by the
liner detector, can the app.
30kHz pulse waveform be
fed?
OK
Check whether there is the
1 kHz sine waveform at pin
22 of IC2 on the base unit.
OK
Check whether there is the
1 kHz sine waveform at pin
17 of IC2.
OK
Check whether there is the
1 kHz sine waveform at the
Q2 collector.
OK
Check whether the 1 kHz sine
wavefor m from TEL-line
output is fed.
OK
Check MC601 of handset.
NG See 3. The base and handset
cannot be connected.
NG Check Q606 and its
peripheral circuit.
NG
Check handset RF unit.
NG
Check base RF unit.
NG
Check C7, R13, C10, R14.
NG Check Q2 and its peripheral
circuit.
NG Check T1, RL1 and their
peripheral circuits.
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