User's Manual

NTUM30DA Installation & Service Manual
Section 5 Maintenance
5-1 Introduction
This section contains periodic maintenance and performance test procedures for the multichan-
nel power amplifier. It also contains a list of test equipment required to perform the identified
tasks.
NOTE
Check your sales order and equipment warranty before attempting to service or re-
pair the unit. Do not break the seals on equipment under warranty or the warranty
will be null and void. Do not return equipment for warranty or repair service until
proper shipping instructions are received from the factory.
5-2 Periodic Maintenance
Periodic maintenance requirements are listed in table 5-1. Table 5-1 also lists the intervals at
which the tasks should be performed.
Table 5-1 Periodic Maintenance
Task Interval Action
Inspection
Cables & Connectors 12 Months Inspect signal and power cables for frayed insulation.
Check RF connectors to be sure that they are tight.
Performance Tests No periodic maintenance is necessary beyond that
recommended by the base station manufacturer.
5-3 Field Replacement Of The Module
The NTUM30DA multichannel power amplifier module can be replaced in the field on site by a
qualified technician with adequate ESD protection and experience maintaining RF power amplifi-
ers and similar equipment.
To replace a power amplifier module, proceed as follows:
1. Turn off that specific module.
2. Disconnect the three RF cables and D-sub connectors (Power In and Data I/O).
3. Loosen 4 front panel captive screws that secure amplifier module to the base station.
4. Carefully remove amplifier module from the base station.
5. Install replacement in reverse order of steps 1 through 4 above.
 Copyright Powerwave Technologies, Inc., June 2003. All rights reserved
044-05141 Rev. A 5-1 June 2003