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Power Entry Modules
AC PEMs
Cisco XR 12404 Router Installation Guide
1-24
Each AC PEM converts 200 to 240 VAC into -48 VDC, which is distributed
through the chassis backplane to all cards, RPs, and the fan assembly.
Figure 1-12
identifies the components of an AC power supply.
Figure 1-12
AC PEM Components
1
2
6
1
AC PEM finger grips
2
On/Off switch
3
Bail latch
The status LEDs on the AC PEM provide information about the current
operational status of the power supply.
indicators.
Table 1-9
AC-Input PEM LED Indicators
LED Label
Color
OUTPUT OK
Green
Chapter 1
3
IN PU T
IN PU T
O UT PU
T
O UT PU
O K
T
10 0- 24 0V
O K
FA IL
12 A
50 /8 0H Z
5
4
4
Power cord receptacle
5
Status LEDs
6
Captive screws
Table 1-9
summarizes the function of these
Function
PEM is powered on and operating normally.
Cisco XR 12404 Router Overview
OL-13830-02
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Troubleshooting
