User's Manual

xxiv
8/30/0268P81095E05-C
FOREWORD
Product Maintenance
Philosophy
Due to the high percentage of surfaceĆmount components and
multi-layer circuit boards, the maintenance philosophy for this prodĆ
uct is one of Field Replaceable Unit (FRU) substitution. The station is
comprised of selfĆcontained modules (FRUs) which, when determined
to be faulty, may be quickly and easily replaced with a known good
module to bring the equipment back to normal operation. The faulty
module must then be shipped to the Motorola System Support Center
for further troubleshooting and repair to the component level.
Scope of Manual
This manual is intended for use by experienced technicians familiar
with similar types of equipment. In keeping with the maintenance phiĆ
losophy of Field Replaceable Units (FRU), this manual contains funcĆ
tional information sufficient to give service personnel an operational
understanding of all FRU modules, allowing faulty FRU modules to be
identified and replaced with known good FRU replacements.
The information in this manual is current as of the printing date.
Changes which occur after the printing date are incorporated by InĆ
struction Manual Revisions (SMR). These SMRs are added to the manĆ
uals as the engineering changes are incorporated into the equipment.