•
Yellow Minor Alarm LED, Red Major Critical Alarm LED, and alarm cutoff/lamp test
ACO/LT button
•
Host Subsystem Master, OK, and FAIL LEDs
•
SIB OK and ACT LEDs
•
Fan tray LEDs
•
PDU LEDs
•
PSM LEDs
Craft Interface LCD
A four-line LCD is located in the craft interface, along with six navigation buttons. The
LCD operates in two modes:
•
LCD idle mode
•
LCD alarm mode
Idle Mode
During normal operation, the LCD operates in idle mode and reports current status
information, as shown in Figure 15 on page 27.
Figure 15: LCD in Idle Mode
The lines in the display report the following information:
•
First line—packet transport switch name.
•
Second line—Length of time the packet transport switch 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.
To add a message that alternates every 2 seconds with the default status messages,
use the set chassis display message command. For more information, see the Junos OS
System Basics and Services Command Reference.
Alarm Mode
When a red or yellow alarm occurs, the LCD switches to alarm mode and reports the
alarm condition, as shown in Figure 16 on page 28.
27Copyright © 2012, Juniper Networks, Inc.
Chapter 3: PTX5000 Hardware Components Overview