10/6/10 888-2629-200 5-1
WARNING: Disconnect primary power prior to servicing.
Maxiva ULX COFDM Series
Section 5
Maintenance and
Alignments
5
5.1 Introduction
This section contains all of the maintenance and alignment procedures for the Maxiva
ULX Series UHF transmitter. This includes routine maintenance, PA module
replacement, PA Module repair, transmitter calibration and PC Board replacement
procedures.
5.2 PA Module Removal and Replacement
!
CAUTION:
TOXIC BERYLLIUM
SOME COMPONENTS IN THE MODULE CONTAIN TOXIC BERYLLIUM. THIS LIMITS
MODULE REPAIR TO A MODULAR LEVEL CONSISTING OF PALLETS AND PC
BOARDS ONLY.
HOT SURFACE
THE MAXIVA PA MODULES ARE DESIGNED TO HANDLE VERY HIGH
TEMPERATURES AND MAY BE EXTREMELY HOT, UP TO 90
O
F (32
O
C) ABOVE
ROOM TEMPERATURE. DO NOT TOUCH THE MODULES WITH BARE HANDS
AFTER THE TRANSMITTER HAS BEEN RUNNING, ESPECIALLY IN HIGH AMBIENT
TEMPERATURE ENVIRONMENTS. SPECIAL GLOVES CAN BE OBTAINED FROM
HARRIS, PART #0990006483 OR GRAINGER ITEM #4JF36. BEFORE MODULE
REMOVAL ALLOW THE MODULES TO COOL IN THE RACK FOR 30 SECONDS
AFTER TURNING THEM OFF WITH THE CIRCUIT BREAKER.
HEAVY WEIGHT
THE PA MODULE WEIGHS APPROXIMATELY 22KG AND CAN BE AWKWARD TO
HANDLE. USE PROPER LIFTING TECHNIQUES WHEN REMOVING AND
REPLACING PA MODULES.
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