Comdial DX-80 Technical Manual page 74

Maintenance and Trouble Shooting
Symptom(s)
(Continued)
Other party cannot Another digital
hear you (handset). telephone
Cannot hear other Another digital
connected party telephone
Note: The above test requires you to set the feature "Auto Select" for intercom operation
("ICM").
Other party can't Another digital
hear you while telephone
using the
speakerphone.
74
Diagnostic Cause(s)
Aid
Component
failure
Component
failure
Connection /
component
failure
Comdial
Action
Lift handset, dial another digital extension.
Confirm connection of audio. Audio one way
only...
Replace handset and repeat. If problem
persists...
Replace handset cord and repeat test. If the
problem persists...
Replace the telephone instrument.
Lift handset, intercom dial tone should be
heard over the handset. If not...
Hang up (put the handset in the cradle), then
press the ON/OFF button. If dial tone is heard
over the loudspeaker...
...Replace handset and repeat the first test. If
there is still no dial tone heard through the
handset...
...Replace the handset cord and retest. Still no
dial tone heard... replace the telephone.
If dial tone is not heard over the loudspeaker
(ON/OFF button test)... replace the telephone.
Press the ON/OFF button and listen for dial
tone over the loudspeaker.
Call a known good extension. (The called
extension should use the handset for this test.)
Verify two-way connection. If the called
extension cannot hear your voice, verify that
MUTE is not enabled (status lamp flashing
red).
Lift the handset and verify two-way connection
using handset. If verified as a speakerphone
problem, replace the telephone.
October, '03