Toshiba FD-9839 Service Manual page 17

3. The base and handset cannot be connected.
Check whether the base
is able to set in the test
mode 1.
OK
Check the TX POWER
and the TX FREQUENCY
on the base unit.
OK
Press "PAGE" key twice,
check whether deviation
of the TX data is app. ±23
kHz~±46kHz Dev.
OK
Check whether the
handset is able to set in
the test mode 1.
OK
Check the TX POWER
and the TX FREQUENCY
on the handset unit.
OK
A
NG Check IC4 and its
peripheral circuit.
NG
Check base RF unit.
Check whether there is a
NG
pulse data waveform at
C19.
OK
Check base RF unit.
NG Check IC606 and its
peripheral circuit.
NG
Check handset RF unit.
Check IC2, Q2 and the
NG
peripheral circuit.
18