Toshiba FD-9839 Service Manual page 20

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 collector
of Q606 be fed?
OK
Check whether there is the
1 kHz sine waveform at pin
12 of IC602.
OK
Check whether there is the
1 kHz sine waveform at pin
22 of IC2.
OK
Check whether there is the
1 kHz sine waveform at the
Q4 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 IC602 and the
peripheral circuit.
NG Check IC2 and the peripheral
circuit.
NG Check IC2, Q4 and the
pripheral circuit.
NG Check T1, RL1 and their
pripheral circuits.
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