Troubleshooting Hints - Toshiba FT-8800 Service Manual

1. The bell does not ring.
When the PAGE SW of the
base is pressed, does the
ringer on the handset ring?
OK
When the TEL SG is joined
with the base to make bell
signal, is there pulse wave at
pin 4 of IC4?
OK
Is there pulse wave at
pin 3 of IC2?
OK
Check IC2 and its
peripheral circuit.
Deletion of the Caller ID memory
To delete the Caller ID memory in the EEPROM, proceed with the following process:
1) Connect the battery with pressing
approximate 2 seconds.
2) Release buttons when entering TEST mode with beep.
3) Press CID button.
4) A confirmation beep will sound after about 8 seconds, then the data for caller ID is deleted.
(Note: Do not disconnect the battery until you hear the confirmation beep, otherwise the data may not be
completely deleted.)

TROUBLESHOOTING HINTS

See 2. The bell does not ring
NG
& page does not ring.
NG Check IC4 and TEL network
circuit.
NG
Check R58 and R59.
and # buttons, and keep pressing the buttons continuously for
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