17
4. Cannot make a phone call (pulse).
Can the base and handset
be connected?
See 3. The base and handset
cannot be connected.
While in TALK MODE, press
dial key of the handset.
Check whether square
waveform from pin 13 of IC5
is fed.
Check IC5.
Check Q10, RL1 and their
peripheral circuits.
NG
OK
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 IC5 is fed?
Check IC5.
OK
NG
Can tone signal be heard
from the handset speaker?
Check IC1, Q3 and their
peripheral circuits.
NG
OK
Check the base TEL-line
circuit and RELAY control
circuit.
NG
Содержание FT 8000
Страница 1: ...CORDLESS TELEPHONE PUBLISHED IN JAPAN Aug 2000 SERVICE MANUAL FILE NO 2B0 200006 FT 8000 ...
Страница 10: ...9 10 SCHEMATIC DIAGRAMS Base Unit ...
Страница 11: ...11 12 Handset ...
Страница 25: ...26 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Страница 26: ...27 Handset Main PCB ...
Страница 27: ...28 WIRING DIAGRAMS Base Unit ...
Страница 28: ...29 Handset ...
Страница 31: ...32 Handset MAIN PCB ASSY RF MODULE HANDSET 7 9 17 18 4 1 16 16 12 15 13 2 3 8 10 6 11 5 16 16 14 ...
Страница 47: ......