Vertical comdial DX-120, Installation And Maintenance Manual

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DX-120 Installation and Maintenance Manual
T
ECHNICAL
P
ROBLEM
S
OLUTIONS
Cannot hear other
connected party Another digital
telephone Component failure 1) Lift handset
If the intercom dial tone is not heard over the
handset:
2) Hang up (put the handset in the cradle).
3) Press the SPK button.
If dial tone is heard over the loudspeaker:
4) Replace handset and repeat the first test.
If there is still no dial tone heard through the
handset:
5) Replace the handset cord and retest.
Still no dial tone heard:
6) Replace the telephone.
AND/OR
If dial tone is not heard over the loudspeaker
(ON/OFF button test):
7) Replace the telephone.
NOTE:
The above test requires you to set the feature "Auto Select" for intercom operation ("ICM").
Other party can't
hear you while
using the
speakerphone. Another digital
telephone Connection /
component failure 1) Press the SPK button.
2) Listen for dial tone over the loudspeaker.
3) Call a working extension.
NOTE
The called extension should use the
handset for this test.
4) Verify two-way connection.
If the called extension cannot hear your voice:
5) Verify that MUTE is not enabled (i.e., status
lamp flashing red).
6) Lift the handset and verify two-way connection
using handset.
If verified as a speakerphone problem:
7) Replace the telephone.
Diagnostic Quick Reference Chart (continued on next page)
Diagnostic Quick Reference Chart (continued)
Symptom(s) Diagnostic Aid Cause(s) Action