Nortel DMS-100 Series Maintenance Manual page 274

7-54 OPM alarm clearing procedures
Ext FSP
OPM cabinet major
Clearing an Ext FSP OPM cabinet major alarm
At the OPM cabinet
1
2
3
4
297-8361-550 Standard 04.01 September 2000
(continued)
Enter this procedure from a peripheral module (PM) system level alarm
clearing procedure step that identified a PM alarm associated with an OPM
cabinet fault.
Determine if any of the power converter fail LEDs on each converter in the
cabinet are lit.
If
a converter fail LED is lit
the converter fail LEDs are not
lit
Determine if one or both of the ringing generator (RG) FAIL LEDs on the two
RGs are lit. The RG FAIL LEDs are located at the top of the frame.
Note: The FAIL LED is behind the front panel of the RG.
If FAIL LEDs
are lit
are not lit
Determine if any line drawer fuses (01 to 15, and RA and RB) are blown. The
fuses are located on the fuse panel above each unit in the frame.
If a fuse
is blown
is not blown
Determine if any alarm battery supply (ABS) fuses (01 to 08), located on the
FSP, are blown (protruding fuse indicator).
If a fuse
is blown
ATTENTION
Do
step 55
step 2
Do
step 41
step 3
Do
step 9
step 4
Do
step 5