17
4. Cannot make a phone call (pulse).
Can the base and handset
be connected?
See 3. The base and
handset cannot connect.
While in TALK MODE, press
dial key of the handset.
Can pulse feedback be
heard from the handset
speaker?
Check the base RELAY
control (around Pin 23 of
IC3).
Check the base TEL-line
network primary circuit.
NG
OK
NG
OK
5. Cannot make a phone call (tone).
Can the base and handset be
connected?
See 3. The base and handset
be cannot be connected.
OK
NG
While in TALK MODE, press
dial key of the handset.
Can tone waveform from Pin
1 of IC3 is fed?
Check IC3.
OK
NG
Can tone signal be heard
from the handset speaker?
Check Pin 18~20 of IC1, Q1
and their peripheral circuits.
NG
OK
Check the base TEL-line
circuit and RELAY control
circuit.
Summary of Contents for FT-7007LBR
Page 1: ... PUBLISHED IN JAPAN Nov 1998 0 10 2 3 456789 FT 7007LR FT 7007LBR ...
Page 8: ...7 BLOCK DIAGRAMS Base Unit ...
Page 9: ...8 Handset ...
Page 11: ...11 12 Handset RX VCO TEST POINT RF TEST POINT TX VCO TEST POINT DISCRI TEST POINT ...
Page 26: ...27 WIRING DIAGRAM Handset ...
Page 43: ......
