4-15
Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-7824-07
Chapter 4 Installation and Maintenance
Removing and Replacing a Power Supply Unit
The handle of the DC unit is at the top of the unit.
•
•
Power Supply Specifications, page 4-16
LEDs
The following LEDs are used to monitor the functioning of the power supply units:
•
On the power supply unit (both AC-input and DC-input):
–
IN LED (green)
–
OK LED (green)
•
On the Front Panel:
–
Power LED: There are two Power LEDs on the front panel (Power A and Power B), one LED
corresponding to each power supply unit
On both the AC-input and DC-input power supplies, the IN LED is used to monitor the voltages received
by the platform from the power source. If the input voltages are within normal operating ranges, the
green IN LED is illuminated. If the input voltages are above or below normal ranges, the IN LED is not
illuminated.
On both the AC-input and DC-input power supplies, the OK LED is used to monitor the power supply
DC output voltages used to power the platform. The normal operating ranges for the 12 VDC output
voltage is between 11.9V and 12.1V. If the output voltages are within normal operating ranges, the green
OK LED is illuminated. If the 12 VDC output voltages are above (more than 12.1V) or below (less than
11.9V) normal ranges, the OK LED is not illuminated.
The Power A and Power B LEDs on the front panel indicate whether the corresponding power supply
unit is functioning normally.
Refer to
,
for LED status information
Table 4-4
IN LED Status for AC-input and DC-input Power Supply Units
LED State
Power Supply Unit Condition
On (green)
The input voltage is in the required range.
Off
The input voltage is not in the required range.
Table 4-5
OK LED Status for AC-input and DC-input Power Supply Units
LED State
Power Supply Unit Condition
On (green)
The output voltage is in the required range (between 11.9 and 12.1 VDC).
Off
The output voltage is not within the required range. (is greater than 12.1 VDC or less
than 11.9 VDC)
