Chapter 2
Functional Description
Figure 2-23
1
Input LED
2
Output LED
3
Fault LED
DC System Operation
This section describes the normal sequence of events for system DC power up and power down.
Power Up
1.
OL-17501-01
D R A F T — C I S C O C O N F I D E N T I A L
DC Module Status Indicators
ON continuously when the input voltage is present and within the correct range.
BLINKING when the input voltage is out of acceptable range.
OFF when no input voltage is present.
ON when the power module output voltage is present.
BLINKING when the power module is in a power limit or overcurrent condition.
ON to indicate that a power supply failure has occurred.
DC power is applied to the power shelf by toggling the customer's DC circuit breakers to "ON"
position.
Cisco ASR 9000 Aggregation Services Router Overview and Reference Guide
Power System Functional Description
1
2
3
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