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Power failure
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Overview
The procedures described below should be performed if the subrack powering
procedure was unsuccessful.
Procedure 1 must be used if the measured voltage at the termination blocks of the PDP
does not lie between -40.5 and -72 V.
Procedure 2 must be used if the “PWR ON” LED does not light up on the user panel.
Procedure 1
Proceed as follows if the measured voltage at the termination blocks of the PDP does
not lie between -40.5 and -72 V:
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1
Switch off the external battery.
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2
Replace all affected power supply lines between the external battery and the
termination blocks of the PDP. Make sure the cables are tight afterwards.
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3
Switch on the external battery.
IF ...
THEN ...
the measured voltage does not lie
between -40.5 and -72 V,
check the external battery.
the measured voltage lies between
-40.5 and -72 V,
END OF STEPS
Procedure 2
Proceed as follows if the “PWR ON” LED does not light up on the User Panel:
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1
Switch all circuit breakers on the subrack backplane (see chapter 5,
) to the
OFF
position (=“O”).
Installation troubleshooting
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A-2
Lucent Technologies - Proprietary
See notice on first page
365-374-187
Issue 1, December 2005
E
N D
O F
S
T E P S
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