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Procedure 2
Proceed as follows if not all fans are running or if the air flow direction is not from
bottom to top:
.................................................................................................................................................................................................
1
Switch all circuit breakers on the subrack backplane (see chapter 5,
) to the
OFF
position (=“O”).
.................................................................................................................................................................................................
2
Replace the affected fan unit.
E
N D
O F
S
T E P S
........................................................................................................................................................................................................................
Installation troubleshooting
Fan unit test failure
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365-374-187
Issue 1, December 2005
Lucent Technologies - Proprietary
See notice on first page
A-5