Nortel DMS-100 Series Maintenance Manual page 283

55 Determine which power converter has a lit CONVERTER FAIL LED.
If the converter
is an NT6X53
is not an NT6X53
56 Use the following table to identify the circuit breaker associated with the shelf
with a lit CONVERTER FAIL LED. The circuit breaker is on the FSP.
If Shelf number is
Row A bay 0 shelf 19 slot 01
Row A bay 0 shelf 33 slot 01
57 Determine if the associated circuit breaker is ON or OFF.
If the circuit breaker
is ON
is OFF
58 Set the circuit breaker you identified in step 56 to ON.
If the circuit breaker
turns OFF, and the RG FAIL LED is lit
remains ON, and the CONVERTER FAIL LED is lit step 77
remains ON, and the CONVERTER FAIL LED is
not lit
59 Determine if the POWER switch on the converter is ON or OFF.
If the POWER switch
is ON
is OFF
60 Set the POWER switch on the converter to ON.
If the CONVERTER FAIL LED
is lit
is not lit
OPM alarm clearing procedures
OPM cabinet major
DMS-100 Family OPM Maintenance Manual XPM14 and up
Do
step 56
step 59
Do use circuit breaker number
CB6
CB7
Do
step 77
step 58
Do
step 66
step 105
Do
step 61
step 60
Do
step 61
step 105
7-63
Ext FSP
(continued)