Toshiba FD-9839, Service Manual

Page: 17 / 64

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