Nortel DMS-100 Series Maintenance Manual page 285

69 Remove the fuse holder that contains the blown fuse.
70 Replace the cartridge fuse inside the fuse holder.
71
Replace the blown fuse.
72 Install the fuse holder back on the PDC frame.
At the OPM cabinet
73 Determine which type of converter had a lit CONVERTER FAIL LED.
If the converter
is an NT6X53
is not an NT6X53
74 Press and hold the RESET button on the converter while you set the circuit
breaker to ON.
75 Release the RESET button.
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 77
76 Set the circuit breaker to ON.
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 77
OPM alarm clearing procedures
OPM cabinet major
DANGER
Risk of fire
For continued protection against risk of fire, make sure to
replace the blown fuse with a fuse of the same type, rating
(color code), and vendor.
DMS-100 Family OPM Maintenance Manual XPM14 and up
Do
step 76
step 74
Do
step 78
step 105
Do
step 78
step 105
7-65
Ext FSP
(continued)