Specifications

DX-80 INSTALLATION AND MAINTENANCE MANUAL
P7290 IMM 4-6
Symptom(s) Diagnostic Aid Cause(s) Action
Another
extension
While on intercom call is the static heard only when
connected to one particular extension? … Examine
that extension.
Station
cabling/MDF
wiring
If static exists on all calls, check station
cabling/wiring and all MDF connections ...correct
any problems.
Extension
apparatus
If noise persists, change-out swappable
components (handset, handset cord). If noise
continues try a known good extension connected to
this station cable.
Static and / or noise can
be heard during a
conversation.
Process of
elimination.
Industry standard
technician testing
tools (lineman's
test set, etc.)
Telco problem If static/noise is heard on CO lines only, determine if
other extensions also hear the noise/static.
If so, are several CO lines affected or only a few.
Disconnect CO line at interface point and connect
Lineman's test set to the same point of connection
ahead of the system. If noise/static persists...
contact the local servicing telephone company and
request repair.
If noise/static can be isolated to the DX-80
equipment, verify which CO line ports are affected
(which CO ports seem to have noise/static).
...replace interface modules as required.
Symptom(s) Diagnostic Aid Cause(s) Action
Programming lost or
changed.
Digital Executive
Telephone
display.
Intended
programming
change.
Check with system administrator for incidental
changes made.
PC-DBA
programming
changes Send All
operation.
When using PC-DBA to make customer database
changes the user must take special precaution not
to overwrite existing data with residual PC-DBA
working directory values. When using PC-DBA to
update any database, it is highly recommended to
perform the function Receive All prior to making
any specific database changes to assure that the
working directory database matches the database
in use at the customer site.
Bad Memory
battery
If power fluctuations occur and the Memory Battery
Backup battery is low or bad, the customer
database is susceptible to being defaulted (factory
settings loaded) whenever a power interruption
occurs. If this occurs change the standard (photo-
cell type) lithium battery.