22
6. TROUBLE WITH SPEAKERPHONE MODE
6-1. The voice of the caller cannot be heard (INCOMING CALL).
6-2. Voice cannot be transmitted to the calling party (OUTGOING CALL).
Check whether there is an
audio waveform on Pin 1 of
IC3.
NG
OK
Check FC701 and SP701.
Check IC3, RL1 and Q2.
Check whether there is an
audio waveform on Pin 1 of
IC15.
NG
OK
Check IC15.
Check whether there is an
audio waveform on Pin 15
of IC32.
NG
OK
Check IC32.
Check whether there is an
audio waveform on Pin 4 of
IC32.
NG
OK
Check Q1, T1, RL1 and Q2.
Check MC1 and IC32.
Check whether there is an
audio waveform on Pin 7 of
IC3.
NG
OK
Check IC3.
Check whether there is an
audio waveform on collector
of Q7.
NG
OK
Check Q7.
Содержание FT-8859
Страница 2: ...CORDLESS TELEPHONE SERVICE MANUAL FILE NO 2B0 9907 FT 8859 PUBLISHED IN JAPAN Oct 1999 ...
Страница 11: ...9 BLOCK DIAGRAMS Base Unit ...
Страница 12: ...10 Handset Unit ...
Страница 13: ...11 12 SCHEMATIC DIAGRAMS Base Unit Main ...
Страница 14: ...13 Base Unit Key NOTES 1 RESISTANCE VALUES ARE SHOWN IN OHMS UNLESS OTHERWISE NOTED K KIRO OHM M MEG OHM ...
Страница 15: ...14 15 Handset ...
Страница 30: ...30 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Страница 31: ...31 Base Unit Key PCB ...
Страница 32: ...32 Handset Main PCB ...
Страница 33: ...33 34 WIRING DIAGRAMS Base Unit ...
Страница 34: ...35 Handset ...
Страница 35: ...36 EXPLODED VIEWS AND MECHANICAL PARTS LIST Base Unit SPEAKER KEY PCB RF MODULE BASE MAIN PCB ANTENNA ...
Страница 37: ...38 Handset 7 8 4 15 1 16 17 18 17 5 10 22 11 21 12 20 2 9 6 19 13 14 3 17 RF MODULE HANDSET MAIN PCB ASSY ...
Страница 57: ......
