M10I Power Supplies Overview; M10I Power System Description; Table 7: Alarm Leds - Juniper M10i Hardware Manual

M10i Multiservice Edge Router Hardware Guide

Table 7: Alarm LEDs

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Documentation

M10i Power Supplies Overview

M10i Power System Description

24
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To deactivate red and yellow alarms, you must clear the condition that caused the alarm.
Table 7 on page 24 describes the alarm LEDs in more detail.
Color State
Red On steadily
Yellow On steadily
M10i Chassis Description on page 5
M10i High-Availability Chassis Manager (HCM) Description on page 21
M10i HCM Serial Number ID Label on page 209
M10i Power System Description on page 24
M10i AC Power Supply Description on page 25
M10i DC Power Supply Description on page 26
M10i Power Supply LEDs on page 27
The router uses either AC or DC power. You can install up to three AC power supplies or
four DC load-sharing power supplies at the bottom rear of the chassis, as shown in Figure
2 on page 6. The power supplies connect to the midplane, which distributes power to
router components according to their individual voltage requirements. When the power
supplies are installed and operational, they automatically share the electrical load.
An enable control pin on the output connector of each power supply ensures that the
supply is fully seated into the router midplane before the supply can be turned on. The
enable pin prevents a user-accessible energy hazard, so there is no interlocking
mechanism. The enable pin disables the voltage at the output connector if the power
supply is not turned off before removal.
Redundant power supplies are hot-removable and hot-insertable, as described in "M10i
Field-Replaceable Units (FRUs)" on page 99.
Description
Critical alarm LED—Indicates a critical condition that
can cause the router to stop functioning, such as
component removal, failure, or overheating.
Warning alarm LED—Indicates a serious but nonfatal
error condition, such as a maintenance alert or a
significant increase in component temperature.
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