AC Power Supply
An AC-powered router has two load-sharing, pass-through AC power supplies, located
at the bottom rear of the chassis, as shown in “M40e Chassis Description” on page 8.
Each AC power supply has the components (see Figure 29 on page 44):
•
One LED—Indicates power supply status. It is green and labeled
OUTPUT OK
. Table
10 on page 44 describes the LED states.
In addition, power supply failure triggers the red alarm LED on the craft interface and
the
RED ALARM
relay contact on the CIP. See “M40e Craft Interface Alarm LEDs and
Controls” on page 35.
•
Self-test button—Tests the power supply. Do not press this button; it is for use by
qualified service personnel only.
•
Internal fans—Cool the power supply.
Figure 29: M40e AC Power Supply
Table 10: States for M40e AC Power Supply LED
Description
State
Color
Label
Power supply is inserted and is functioning normally.
On steadily
Green
OUTPUT OK
Power supply is not plugged in, or power switch is in
off position (when other AC power supply is
functioning).
Blinking
slowly
Power supply is starting up.
Blinking
rapidly
Table 11 on page 45 lists electrical specifications for the AC power supply.
Copyright © 2010, Juniper Networks, Inc.
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M40e Multiservice Edge Router Hardware Guide
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