Troubleshooting
VCO/4K Power Subsystem 1-15
7.0 TROUBLESHOOTING
7.1 Alarms
The following two events occur simultaneously when voltage monitoring on the control board
of the power supply module detects either an over-voltage or an under-voltage condition:
•
An alarm is sent to the Alarm Arbiter card (AAC) and is displayed on the AAC—the
red MAJOR LED turns on; the yellow AUX1 LED turns on.
•
The power LED on the power supply module turns red.
When these two events occur, you must replace the power supply module. Refer to Section 6.1
and Section 6.2.
7.2 Spare Fuse Kit
One spare fuse kit containing two 25-amp fuses comes with the VCO/4K. A fuse is on the back
of each power supply module.
8.0 RELATED DOCUMENTS
For additional information on the VCO/4K power subsystem, refer to the following
publications:
•
Cisco VCO/4K Site Preparation Guide
•
Cisco VCO/4K Hardware Installation Manual
•
Cisco VCO/4K System Maintenance Manual
•
Ring Generator Instruction Sheet (included with the ring generator kit)
