T640 Craft Interface Fpc Leds And Online/Offline Buttons; T640 Craft Interface Host Subsystem Leds; Table 5: Alarm Leds And Alarm Cutoff/Lamp Test Button; Table 6: Fpc Leds - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
Related
Documentation

T640 Craft Interface FPC LEDs and Online/Offline Buttons

Related
Documentation

T640 Craft Interface Host Subsystem LEDs

24

Table 5: Alarm LEDs and Alarm Cutoff/Lamp Test Button

Shape Color
Red
Yellow
—
T640 Chassis Description on page 15
T640 LED Overview on page 464
Replacing a T640 Craft Interface on page 265
Each FPC slot has two LEDs that indicate its status. The FPC LEDs, labeled
, are located along the bottom of the craft interface.
FPC7
the functions of the FPC LEDs.

Table 6: FPC LEDs

Label Color
Red
FAIL
Green
OK
T640 Chassis Description on page 15
T640 LED Overview on page 464
Replacing a T640 Craft Interface on page 265
Each host subsystem has three LEDs, located on the upper right of the craft interface,
that indicate its status. The LEDs labeled
in slot RE0 and the control board in slot
State Description
On steadily Critical alarm LED—Indicates a critical condition that
can cause the router to stop functioning. Possible
causes include component removal, failure, or
overheating.
On steadily Warning alarm LED—Indicates a serious but nonfatal
error condition, such as a maintenance alert or a
significant increase in component temperature.
— Alarm cutoff/lamp test button—Deactivates red and
yellow alarms. Causes all LEDs on the craft interface
to light (for testing purposes), when pressed and
held.
State Description
On steadily FPC has failed.
On steadily FPC is functioning normally.
Blinking FPC is starting up.
show the status of the Routing Engine
HOST0
CB0 . The LEDs labeled
through
FPC0
Table 6 on page 24 describes
HOST1 show the status
Copyright © 2017, Juniper Networks, Inc.