Nortel DMS-100 Series Maintenance Manual page 286

7-66 OPM alarm clearing procedures
Ext FSP
OPM cabinet major
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297-8361-550 Standard 04.01 September 2000
(continued)
Set the circuit breaker to OFF.
Refer to the correct procedure in Card Replacement Procedures to replace
the converter. When you complete the procedure, return to this point.
Determine which type of converter you replaced.
If the converter you replaced
is an NT6X53
is not an NT6X53
Determine if the CONVERTER FAIL LED for the converter you replaced is lit.
If the CONVERTER FAIL LED
is lit
is not lit
Determine the state of the converter you replaced, and the associated circuit
breaker.
If the circuit breaker
turns OFF, and the CONVERTER FAIL LED is lit
remains ON, and the CONVERTER FAIL LED is
not lit
remains ON, and the CONVERTER FAIL LED is lit step 82
Set the circuit breaker to OFF.
Remove the NT6X51 and NT6X52 cards from the shelf with the lit
CONVERTER FAIL LED.
Set the circuit breaker to ON.
If the CONVERTER FAIL LED
is lit
is not lit
Set the circuit breaker to OFF.
Insert the NT6X51 card back into the shelf.
Set the circuit breaker to ON.
If the circuit breaker
turns OFF, and the CONVERTER FAIL LED is lit
Do
step 81
step 80
Do
step 97
step 105
Do
step 83
step 105
Do
step 97
step 85
Do
step 89