T4000 Craft Interface Leds; Alarm Leds; Figure 14: Front Panel Of The Craft Interface - Juniper T4000 Hardware Manual

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T4000 Craft Interface LEDs

Figure 14: Front Panel of the Craft Interface

Red Yellow
alarm alarm
LED LED
ACO/LT
FAIL OK FAIL OK
FPC 0 FPC 1
Copyright © 2013, Juniper Networks, Inc.
Third and fourth lines—Individual alarm messages, with the most severe condition
shown first. The prefix on each line indicates whether the alarm is a red (
alarm.
T4000 Craft Interface LEDs on page 25
T4000 Alarm Messages Overview on page 191
Chassis Operational Mode Commands
Figure 14 on page 25 shows the LEDs on the craft interface.
LCD display
MENU
ENTER
FAIL OK FAIL OK FAIL
FPC 2 FPC 4
FPC 3
FPC LEDs and online/offline buttons
Alarm LEDs on page 25
FPC LEDs on page 26
Host Subsystem LEDs on page 26
SIB LEDs on page 27

Alarm LEDs

Two large alarm LEDs are located at the upper left of the craft interface. The circular red
LED lights to indicate a critical condition that can result in a system shutdown. The
triangular yellow LED lights to indicate a less severe condition that requires monitoring
or maintenance. Both LEDs can be lit simultaneously.
A condition that causes an LED to light also activates the corresponding alarm relay
contact on the Connector Interface Panel (CIP). The LCD on the craft interface reports
the cause of the alarm.
To deactivate red and yellow alarms, press the button labeled
cutoff/lamp test"), which is located to the right of the alarm LEDs. Deactivating an alarm
turns off both LEDs and deactivates the device attached to the corresponding alarm
relay contact on the CIP. However, the LCD continues to report the alarm message until
you clear the condition that caused the alarm.
Table 5 on page 26 describes the alarm LEDs and alarm cutoff button in more detail.
Chapter 3: T4000 Hardware Components Overview
Host
subsystem
LEDs
FAIL OK MASTER
HOST0
HOST1
FAIL OK MASTER
OK FAIL OK FAIL OK
FPC 5 FPC 6
) or yellow (
R
SIB
LEDs
FAIL OK
SP0
SP1
SP2
SP3
SP4
FAIL OK
FPC 7
ACO/LT (for "alarm
)
Y
25