Juniper T640 Hardware Guide

See “T640 Craft Interface FPC LEDs and Online/Offline Buttons” on page 24.
•
Alarm LEDs—One large red circular LED and one large yellow triangular LED, located
on the upper left of the craft interface, indicate two levels of alarm conditions. You can
determine the cause of the alarm condition by looking at the LCD on the craft interface.
See “T640 Craft Interface Alarm LEDs and ACO/LT Button” on page 23.
Component LEDs
The following LEDs are located on various router components and display the status of
those components:
•
Connector interface panel (CIP) LEDs—Two small LEDs on left edge of the ETHERNET
port on the CIP indicate the connection in use.
NOTE: When RE-C1800 are installed, the LEDs are always yellow for both
a 10-Mbps connection and 100-Mbps connection.
See “T640 Connector Interface Panel (CIP) LEDs” on page 22.
•
Control board LEDs—Three LEDs on each control board faceplate indicate the status
of that control board. If no LEDs are lit, the control board is not receiving power.
See “T640 Standard Control Boards LEDs” on page 64, “T640 T Series Control Boards
(T-CBs) LEDs” on page 66, or “T640 LCC-CB LEDs” on page 62.
•
PIC LEDs—Each port on each PIC has an LED that indicates the status of the port.
See the T640 Core Router Interface Module Reference.
•
SIB LEDs—Three LEDs on each SIB faceplate—ACTIVE, OK, and FAIL—indicate the
status of that SIB.
See T640 Switch Interface Boards (SIBs) LEDs
•
SCG LEDs—Three LEDs on each SCG faceplate indicate the status of that SCG.
T640 SONET Clock Generators (SCGs) LEDs on page 28
•
Power supply LEDs—LEDs on each power supply faceplate indicates the status of that
power supply.
See the following documentation:
•
T640 Two-Input 160-A DC Power Supply LEDs on page 98
•
T640 Three-Input 240-A DC Power Supply LEDs on page 100
•
T640 Four-Input 240-A DC Power Supply LEDs on page 103
•
T640 Six-Input DC Power Supply LEDs on page 105
•
T640 Three-Phase Delta and Wye AC Power Supply LEDs on page 109
465Copyright © 2017, Juniper Networks, Inc.
Chapter 33: Troubleshooting Components

Juniper T640 Specifications

General

Brand	Juniper
Model	T640
Category	Network Router
Language	English