— 28 —
4. Will not dial out.
(TONE)
(PULSE)
Check whether there is a
DTMF waveform on Pin 8
(Line 1) or Pin 4 (Line 2) of
IC6.
Check IC10 and IC6.
NG
OK
Check whether there is a
DTMF waveform on Pin 7
of IC2 (Line 1) or Pin 1 of
IC11 (Line 2).
Check IC2 or IC11.
NG
Check whether there is a
pulse on Pin 70 (Line 1) or
Pin 69 (Line 2) of IC18.
NG
OK
Check the collector of Q8
(Line 1) or Q11 (Line 2).
NG
Check IC18.
Check Q8 and R82 (Line 1)
or Q11 and R150 (Line 2).
OK
Check RL1 (Line 1) or
RL2 (Line 2).
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 ...