— 17 —
2. The bell of handset does not ring & page does not ring.
Can the base and handset be
connected?
Press handset DIAL key
while in TALK MODE.
Can key touch sound be
heard from the ringer?
Check IC6 and its peripheral
circuit.
When the key of the handset is
pressed, can the pulse output
at Pin 38 of IC608 be seen?
Check RINGER Y601.
See 3. The base and handset
cannot be connected.
Check IC608.
OK
OK
OK
NG
NG
NG
At the Q612 collector, can the
pulse wave be seen?
OK
NG
Check R715, R726, R727,
R728, R730, Q612, Q613
and D613.
Summary of Contents for FT-8901A
Page 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Oct 2001 FILE NO 2BO 200113 FT 8901A CORDLESS TELEPHONE ...
Page 9: ...BLOCK DIAGRAMS Base Unit 8 ...
Page 10: ... 9 Handset Unit ...
Page 12: ...Base Key Unit 12 13 FT8901A Sche p65 01 10 15 10 42 Page 9 Adobe PageMaker 6 5J Win ...
Page 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 ...
Page 29: ... 31 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 30: ... 32 Base Unit Key PCB ...
Page 31: ... 33 Handset Unit Main PCB ...
Page 32: ... 34 WIRING DIAGRAMS Base Unit ...
Page 33: ... 35 Handset Unit ...
