Nortel DMS-100 Series Maintenance Manual page 284

7-64 OPM alarm clearing procedures
Ext FSP
OPM cabinet major
61
62
63
64
65
66
At the PDC frame
67
68
297-8361-550 Standard 04.01 September 2000
(continued)
Use the following table to identify the circuit breaker associated with the shelf
with the lit CONVERTER FAIL LED. The circuit breaker is on the FSP.
If shelf number is
NT2X70 in
(row A bay 0 shelf 05 slot 22)
NT2X70 in
(row A bay 0 shelf 05 slot 25)
NT2X09 in
(row A bay 1 shelf 05 slot 17)
Determine if the associated circuit breaker is ON or OFF.
If the circuit breaker
is ON
is OFF
Set the circuit breaker you identified in step 61 to OFF.
Press and hold the RESET button on the converter while you set the circuit
breaker to ON.
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
Record the numbers of the frame and shelf with the lit CONVERTER FAIL
LED.
Locate the fuse that powers the shelf in the OPM cabinet.
Determine if the fuse is blown.
If the fuse
is blown
is not blown
Do use circuit breaker number
slot 22 CB4
slot 25 CB1
slot 17 CB5
Do
step 63
step 64
Do
step 69
step 78
Do
step 66
step 105