— 19 —
A
Set the handset in the
test mode 3, check
whether deviation of the
TX data is app. 9.0 kHz
Dev.
NG
Check whether there is a
250 Hz data waveform at
RT602.
Check R668, R712,
R713, R716, R717,
C719, C748 and RT602.
NG
OK
NG
Set the handset in the
test mode 6, 926.997467
MHz (250 Hz
±
8 kHz
Dev.) 1mV output signal
from RF test point is
applied. Check whether
the bell ring.
NG
Check whether the 250
Hz data waveform from
Pin 9 of IC603 is fed.
Check IC603 and its
peripheral circuit.
NG
OK
OK
Check whether there is a
250 Hz data waveform at
Pin 10 of IC602.
Check IC602 and its
peripheral circuit.
NG
OK
Check whether there is a
250 Hz data waveform at
Pin 40 of IC608.
Check R648, R649,
IC602 and their
peripheral circuits.
NG
OK
Check IC608 and its
peripheral circuit.
OK
Place the handset on the
base to charge about 5
seconds, then connect
again.
OK
Check handset RF
section.
Check handset RF
section.
Содержание FT-8901A
Страница 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Oct 2001 FILE NO 2BO 200113 FT 8901A CORDLESS TELEPHONE ...
Страница 9: ...BLOCK DIAGRAMS Base Unit 8 ...
Страница 10: ... 9 Handset Unit ...
Страница 11: ...RF Section SCHEMATIC DIAGRAMS Base Unit 10 11 FT8901A Sche p65 01 10 15 10 42 Page 8 Adobe PageMaker 6 5J Win ...
Страница 12: ...Base Key Unit 12 13 FT8901A Sche p65 01 10 15 10 42 Page 9 Adobe PageMaker 6 5J Win ...
Страница 13: ...Handset Unit 14 15 RF Section FT8901A Sche p65 01 10 15 10 42 Page 10 Adobe PageMaker 6 5J Win ...
Страница 26: ... 28 Unit V Ref No Pin STBY TALK Note Note 61 2 9 2 9 IC608 62 2 9 2 9 63 2 9 2 9 64 2 9 2 9 ...
Страница 29: ... 31 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Страница 30: ... 32 Base Unit Key PCB ...
Страница 31: ... 33 Handset Unit Main PCB ...
Страница 32: ... 34 WIRING DIAGRAMS Base Unit ...
Страница 33: ... 35 Handset Unit ...
