9-26
September 27, 2000
68P81093C75-O
•
Do not insert or remove modules with power
applied. Always turn off the station by unplugging
the AC and DC cords from the top panel before
inserting or removing modules.
•
All spare modules should be kept in a conductive
bag for storage and transporting. When shipping
modules to the repair depot, always pack them in
conductive material.
Care of Gold-Plated
Connector Contacts
The connectors between the modules and the station backplane
board are made with gold-plated card edge connector contacts to
provide maximum reliability. Gold-plated materials do not form a
non-conductive oxide layer and therefore should not require
cleaning under normal conditions.
When the modules have been subjected to many extraction/insertion
cycles, or if the station is operated in a dusty environment, the
contacts may require cleaning. Do not use an eraser or any type of
abrasive substance to clean either the module card edge connectors,
or the backplane connector contacts.
If the cleaning of gold-plated contacts is required, use a soft cloth
dampened with alcohol to lightly wipe the contacts. Be sure not to
touch the contact surfaces with your fingers; finger oils and salts can
contaminate the contact surfaces.
Power Down Station
Before Removing/
Inserting Modules
Before removing or inserting a module into the station chassis and
engaging the backplane connector, be sure to turn off the station
power by unplugging the AC or DC power cord, or both.
Validating Repairs
After replacing a faulty module with a module that is known to be in
good condition, perform the following tests to validate the repair.
•
If the faulty module was detected as the result of
running station diagnostics via the RSS, run the
diagnostics again after the repair is made to ensure
that the replacement module passes all diagnostic
tests.
•
If the faulty module was detected by an
operational failure, perform the operation to
ensure that the repair corrected the reported or
detected failure.
Module Replacement
This section discusses the replacement of each of the PDR 3500’s
modules and related requirements and considerations.
