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1. The bell does not ring.
When the INTCOM key 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
18 of IC22?
OK
Check IC22 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
NG
See 2. The bell does not
ring & page does not ring.
NG
Check IC4 and TEL
network circuit.
NG
Check R35, R65 and C49.
and
#
buttons, and keep pressing the buttons continuously for
16
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