— 29 —
5. TROUBLE WITH INTERCOM MODE
5-1. The voice from the Base unit cannot be heard on the Handset.
Check MC401 and IC20.
Check whether there is an
audio waveform on Pin 23
of IC20.
NG
OK
Check Pin 2 of IC15.
5-2. The voice from the Handset cannot be heard on the Base unit.
Check IC15.
Check whether there is an
audio waveform on Pin 4
of IC15.
NG
OK
Check IC20 and IC19.
Check whether there is an
audio waveform on Pin 14
of IC20.
NG
OK
Check W702 and SP701.
Содержание FT-8258
Страница 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Jun 1998 FILE NO 2B0 9801 FT 8258 CORDLESS TELEPHONE ...
Страница 10: ...BLOCK DIAGRAMS Handset Main 9 ...
Страница 11: ...Handset RF 10 ...
Страница 12: ...Base RF 11 ...
Страница 13: ...Base Main 12 13 ...
Страница 14: ... 14 15 SCHEMATIC DIAGRAMS ...
Страница 15: ... 16 17 Base RF ...
Страница 16: ...Base Key 18 19 ...
Страница 17: ... 20 21 Handset Main ...
Страница 18: ... 22 23 Handset RF ...
Страница 37: ...ELECTRICAL PARTS LOCATIONS Base Main 42 ...
Страница 38: ...Base RF 43 ...
Страница 39: ...Base Key 44 ...
Страница 40: ...Handset Main 45 ...
Страница 41: ...Handset RF 46 ...
Страница 42: ...WIRING DIAGRAMS Base 47 ...
Страница 43: ...Handset 48 ...
Страница 75: ...MECHANICAL PARTS LIST ...