2. The bell does not ring & page does not ring.
NG
Can the base and handsetSee 3. The base and
be connected?handset cannot be
connected.
OK
Press handset DIAL keyWhen the key of the
NGNG
while in TALK MODE.handset is pressed, can theCheck IC602.
Can key touch sound bepulse output at pin 38 of
heard from the ringer?IC602 be seen?
OKOK
NG
At the Q613 collector, canCheck R694, R695 and
the pulse wave be seen?D610.
OK
Check RINGER Y601.
When the PAGE SW S1 of
NG
the base is pressed, does Check R67, R104 and S1.
pin20 of IC2 change from
high to low?
OK
Check IC2 and its
peripheral circuit.
? 14 ? |
ACEC
TOSHIBA
