User Manual

Power Cabinet Initial Power Up – continued

PRELIMINARY 2

SC 4812ET BTS Optimization/ATP – CDMA LMF

July 1999

2-10

Table 2-11: Minor Alarm

Step Action

1 Turn the TCP power switch OFF. This will generate a minor alarm. Verify that the minor alarm

LED (amber) is illuminated on the DMAC and the LMF reports this minor alarm.

2 Alarm condition will be reported as BTS–24 contact.

3 Turn the TCP power switch ON. The alarm condition should clear.

Rectifier Alarms

The following series of tests are for single rectifier modules in a multiple

rectifier system. The systems include a three rectifier and a six rectifier

system.

Single Rectifier Failure

Table 2-11 gives instructions on testing single rectifier failure or minor

alarm in a three (3) rectifier system.

Table 2-12: Single Rectifier Fail or Minor Alarm

Step Action

1 Remove a single rectifier module and place it into the unused rectifier shelf #2.

2 Turn the AC breaker OFF, for this 2nd shelf.

3 Verify that a rectifier fail alarm is generated. The single rectifier module will illuminate two (2)

RED fail LED (DC and Power), and the DMAC and LMF will also indicate a minor alarm and

rectifier fail status. The RECTIFIER FAIL LED will illuminate.

4 Check that the LMF reports both of these alarm conditions. Alarm condition will be reported as

BTS–24 and BTS–21 contacts respectively.

5 Turn the AC breaker for the 2nd shelf ON and verify that Rectifier Fail and minor alarm

conditions clear on the DMAC and LMF.

Multiple Rectifier Failure

Table 2-13gives instructions on testing multiple rectifier failure or major

alarm in a three (3) rectifier system.

Table 2-13: Multiple Rectifier Failure or Major Alarm

Step Action

1 With the rectifier module still in the unused shelf position from Table 2-12 test procedures, turn

the AC breaker for the 1st shelf OFF.

2 Verify that a rectifier alarm is generated. Each of the two rectifier modules will illuminate two (2)

RED fail LED (DC and Power), and the DMAC and LMF will indicate a major alarm (Rectifier

Fail and Major Alarm). The RECTIFIER FAIL LED will illuminate.

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