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Related
Documentation
M120 Flexible PIC Concentrators (FPCs) Overview on page 9
•
•
M120 Craft Interface Description on page 23
•
Maintaining M120 FPCs and CFPCs on page 106
•
Replacing the M120 Craft Interface on page 129
Power Supply LEDs on the M120 Craft Interface
Each power supply has one LED on the craft interface that indicates its status. The LEDs,
labeled
0
and
1
, are located on the lower left of the craft interface under the
POWER
label. Table 13 on page 28 describes the functions of the power supply LEDs.
Table 13: Power Supply LEDs on the M120 Craft Interface
Description
State
Color
Label
Power supply has failed.
On steadily
Red
STATUS
Power supply is functioning normally.
On steadily
Green
Related
Documentation
M120 AC Power Supply Description on page 29
•
•
M120 DC Power Supply Description on page 31
•
M120 AC Power Supply LEDs on page 30
•
M120 DC Power Supply LEDs on page 32
•
M120 Craft Interface Description on page 23
•
Maintaining the M120 Power Supplies on page 115
•
Replacing the M120 Craft Interface on page 129
Alarm Relay Contacts on the M120 Craft Interface
The host interface has two alarm relay contacts for connecting the router to external
alarm devices (see Figure 13 on page 24). Whenever a system condition triggers either
the red or yellow alarm on the craft interface, the alarm relay contacts are also activated.
The alarm relay contacts are located below the Routing Engine ports.
Related
Documentation
M120 Craft Interface Description on page 23
•
•
Maintaining the M120 Power Supplies on page 115
•
Replacing Alarm Relay Wires on the M120 Craft Interface on page 133
M120 Power Supplies Overview
•
M120 Power Supplies Description on page 29
•
M120 AC Power Supply Description on page 29
Copyright © 2010, Juniper Networks, Inc.
28
M120 Multiservice Edge Router Hardware Guide
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