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SCP-PGCAB001-010-01H
Troubleshooting
Follow the generic guideline below for troubleshooting alarms from a field cabinet:
1. Identify the alarm reported.
2. Check the tables below in the Equipment Alarms section and find the expected indicators for the reported
alarm.
3. Verify that the expected indicators are present on the transmission/field cabinet equipment.
4. Check the alarm assignments on the field cabinet decal or schematic drawing to find possible alarm causes.
5. Identify the cause.
6. Repair or replace.
Equipment Alarms
The alarm information is transmitted from the field cabinet to the central office or Alarm Reporting system via the
access equipment. Field cabinet wiring and jumpers on the alarm panel connect field cabinet and equipment alarms
to the alarm input ports on the access equipment.
Alarm outputs are also available at the alarm panel, typically as isolated contact closures, to activate local office
alarm circuits (e.g., audible and/or visual alarms).
The PG-FlexPlus schematic diagram and field cabinet labeling shows the alarm terminations and fuse assignments
that are specific to your field cabinet configuration. When modifying cross-connections, it is important to identify the
alarm output format and ensure that it is compatible with the alarm input.
Power System Alarms
The following alarms are available at the Alarm Interface Panel from the DC power and distribution system.
• Power Major: failure of a ring generator pair, low-voltage disconnect, excessive battery temperature, blown fuse
in Valere, or battery disconnect open
• Power Minor: failure of at least one rectifier, ring generator, battery temperature probe, or at least one rectifier
on Standby
• Major Fuse Alarm: blown fuse, also included Power Major above (See Schematic and/or field cabinet labeling
for fuse assignments)
• Battery on Discharge
• AC Failure: loss of AC input voltage to at least one rectifier
42
July 19, 2004
ADC Telecommunications, Inc.
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