Toshiba FT-7007LR Service Manual page 16

4. Cannot make a phone call (pulse).
Can the base and handset
be connected?
OK
While in TALK MODE, press
dial key of the handset.
Can pulse feedback be
heard from the handset
speaker?
OK
Check the base TEL-line
network primary circuit.
5. Cannot make a phone call (tone).
Can the base and handset be
connected?
OK
While in TALK MODE, press
dial key of the handset.
Can tone waveform from Pin
1 of IC3 is fed?
OK
Can tone signal be heard
from the handset speaker?
OK
Check the base TEL-line
circuit and RELAY control
circuit.
NG
NG
NG See 3. The base and handset
be cannot be connected.
NG
Check IC3.
NG Check Pin 18~20 of IC1, Q1
and their peripheral circuits.
17
See 3. The base and
handset cannot connect.
Check the base RELAY
control (around Pin 23 of
IC3).