T640 Craft Interface Lcd And Navigation Buttons; Figure 10: T640 Lcd In Idle Mode; Table 7: T640 Host Subsystem Leds - Juniper T640 Hardware Manual

Related
Documentation

T640 Craft Interface LCD and Navigation Buttons

Copyright © 2017, Juniper Networks, Inc.
of the Routing Engine in slot
describes the functions of the host subsystem LEDs.

Table 7: T640 Host Subsystem LEDs

Label Color
FAIL Red
OK Green
MASTER Green
T640 Chassis Description on page 15
T640 LED Overview on page 464
Replacing a T640 Craft Interface on page 265
A four-line LCD is located in the craft interface, along with six navigation buttons. The
LCD operates in two modes:
LED Idle Mode
LED Alarm Mode
During normal operation, the LCD operates in idle mode and reports current status
information, as shown in Figure 10 on page

Figure 10: T640 LCD in Idle Mode

The lines in the display report the following information:
First line—Router name.
Second line—Length of time the router has been running, reported in the following
form:
Up days + hours:minutes
Third and fourth lines—Status messages, which rotate at 2-second intervals. Some
conditions, such as removal or insertion of a system component, can interrupt the
messages.
Chapter 3: Chassis Components and Descriptions
and the control board in slot
RE1
State Description
On steadily Host is offline.
On steadily Host is online and is functioning normally.
On steadily Host is functioning as the master.
25.
. Table 7 on page 25
CB1
25