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2. The bell of handset does not ring & page does not ring.
Can the base and handset be
connected?
OK
Press handset DIAL key
while in TALK MODE.
Can key touch sound be
heard from the ringer?
OK
Check IC6 and its peripheral
circuit.
NG
See 3. The base and handset
cannot be connected.
NG
When the key of the handset is
pressed, can the pulse output
at Pin 38 of IC608 be seen?
OK
At the Q612 collector, can the
pulse wave be seen?
OK
Check RINGER Y601.
— 17 —
NG
Check IC608.
NG
Check R715, R726, R727,
R728, R730, Q612, Q613
and D613.
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