Service Manual

GSM-205-523
12-monthly maintenance procedures
31st Oct 01
Maintenance Information: Horizon macro indoor
68P02902W09-B
CONTROLLED INTRODUCTION
Maint. 1–7
Cabinet
modules in
operational
positions
Figure 1-2 shows the cabinet modules, (door and optional hood omitted for
clarity).
CIRCUIT
BREAKER
MODULE (CBM)
T43/BIB
MCUF
ALARM MODULE
FMUX/NIU/BPSM
(NOT VISIBLE)
TWO 2-FAN UNITS
ONE 4-FAN UNIT
SIX TRANSCEIVERS
(CTUs)
THREE Tx BLOCKS
(DCFs SHOWN AS EXAMPLE)
ONE SURF (Rx)
THREE PSMs
(see NOTE)
DC POWER IN
INTERFACE
PANEL
CONNECTORS
HEAT SENSORS
LOCATED ON
BACKPLANE
NOTE An optional hold-up battery module may be installed
instead of a redundant PSM.
Figure 1-2 Cabinet modules with door and hood removed