User`s guide

Modem 3600
12-1
Chapter 12
Maintenance
Warning
Disconnect power before performing maintenance.
Although dangerous voltage levels are not exposed,
disconnecting power ensures that no electric shock hazard
is present.
General
The modem contains no internal electronic components that can be
serviced or replaced by the user. Repairs should not be attempted by the
user.
Fuse Replacement
If a fuse fails, replace it with one of equal rating. Repeated failure
indicates a more serious problem.
Maintenance
The modem provides maintenance-free service. Periodically it is advisable
to remove dust that has collected on internal components. If attempting to
clean the modem, remove dust with a soft bristle brush and low pressure
air or vacuum.
Before attempting diagnostic tests, verify that all connectors and plugs are
firmly inserted. The test procedures identify the faulty component in a bad
communications link.