2. The bell does not ring & page does not ring.
Can the base and handset beNGSee 3. The base and handset
connected?cannot be connected.
OK
Press handset DIAL keNGyWhen the key of the handset isNG
Check IC606.
while in TALK MODE.pressed, can the pulse output
Can key touch sound beat pin 2 of IC606 be seen?
heard from the ringer?
OK
OK
At the Q609 collector, can theNG
Check R667 and Q609.
pulse wave be seen?
OK
Check RINGER Y601.
When the PAGE SW of theNGCheck R147, R753, R758,NG
Replace defective part(s).
base is pressed, does pin63R443, R754, C427 and Q403.
of IC8 change from high to
OK
low?
OK
Check IC402 and key circuit.
Check IC8 and its peripheral
circuit.
17 |
ACEC
TOSHIBA
