User Manual

Power Cabinet Initial Power Up – continued
July 1999
2-11
SC 4812ET BTS Optimization/ATP – CDMA LMF
PRELIMINARY 2
Table 2-13: Multiple Rectifier Failure or Major Alarm
Step Action
3 Verify that the LMF reports both alarm conditions. Alarm condition will be reported as BTS–29
and BTS–21 contacts respectively.
4 Turn the AC breaker for the 1st shelf ON. Verify that all alarms have cleared.
5 Return the rectifier module to its original location. This completes the alarm test on the Power
Cabinet.
Single Rectifier Failure
Table 2-14 gives instructions on testing single rectifier failure or minor
alarm in a six (6) rectifier system.
Table 2-14: Single Rectifier Fail or Minor Alarm
Step Action
1 Remove two(2) rectifier modules from shelf #2.
2 Turn the AC breaker OFF, for shelf #2.
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–31 contacts respectively.
5 Turn the AC breaker for this shelf ON and verify that Rectifier Fail and Minor Alarm conditions
have cleared.
Multiple Rectifier Failure
Table 2-15 gives instructions on testing multiple rectifier failure or major
alarm in a six (6) rectifier system.
Table 2-15: Multiple Rectifier Failure or Major Alarm
Step Action
1 Replace one rectifier module previously removed and turn the AC breaker for this shelf, OFF.
2 Verify that a rectifier alarm is generated. Each of the two rectifier modules will illuminate a RED
fail LED, and the DMAC will indicate a major alarm. The RECTIFIER FAIL LED will
illuminate.
3 Verify that the LMF reports both alarm conditions. Alarm condition will be reported as BTS–29
contact.
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