Service Manual

GSM-204-323
Equipment introduction and manual definition
31st Oct 01
Tech. 1–4
Technical Description: Horizon macro outdoor
CONTROLLED INTRODUCTION
68P02902W02-A
Finding
information in
this manual
This service manual comprises the four categories below:
 Category 323
Provides an introduction, specification, and technical description.
 Category 423
Provides information for installation and commissioning.
 Category 523
Provides information on maintenance and repair, with procedures to
change Field Replaceable Units (FRUs).
 Category 623
Provides the range of options and spares, with diagrams to illustrate
FRUs.
The Category 323 technical description is divided into chapters based on
functionality, as shown in Figure 1-2:
 Overview and specifications
This chapter provides a summary of the equipment to enable the reader to
understand terminology, and thus locate information via the TOCs and
index.
 Cabinet structure, including:
Interface panel, main cage,power supply enclosure, doors and lid.
 Thermal management system (TMS), describing:
TMS units.
 Cabinet power supply, including:
Power distribution, TOPSM, PSM, BPSM and circuit breaker module.
 RF modules, including:
CTU, SURF and Tx Blocks.
 Digital modules, including:
MCUF, NIU, T43/BIB connections, FMUX and alarm module.
Information regarding optional equipment is also provided:
 Auxiliary equipment housing.
 Cable shroud.