Diagnostic Leds On The Jcs 1200 Platform; Table 24: Diagnostic Leds On The Jcs 1200 Platform - Juniper JCS 1200 Hardware Manual

Juniper Control System (JCS) 1200 Platform Hardware Guide
error LEDs on the JCS 1200 components also might be lit. These LEDs help to identify
the cause of the problem.
The following example shows how to use the LEDs to diagnose a system error:
1.
2.
3.
Related Topics

Diagnostic LEDs on the JCS 1200 Platform

Use Table 24 on page 90 to find solutions to problems that are identified by LEDs
on the front and rear JCS 1200 system LED panels.

Table 24: Diagnostic LEDs on the JCS 1200 Platform

Lit LED Cause
JCS 1200 System LED Panels
Power-on Green indicates that power is present in the JCS 1200
platform. When this LED is off, the power subsystem,
the AC power source, or the LED has failed, or the
management module is not present or not
functioning.
CAUTION: If the power-on LED is off, it does not
mean that no electrical current is present in the
JCS 1200 platform. The LED might be burned out. To
remove all electrical current from the JCS 1200
platform, you must disconnect all power cords from
all power modules.
Location Blue indicates that a condition has occurred in the
JCS 1200 platform that has caused the remote
systems management to identify the JCS 1200
platform as needing attention.
Critical system fault When this LED is lit, the JCS 1200 platform has a
critical system fault. A critical system fault is an error
or event that is detected by the system and that has
a significant impact to the system. In this case, the
system cannot continue to operate or is operating in
a nonredundant power or cooling configuration.
90
Diagnostic LEDs on the JCS 1200 Platform
Note that the JCS 1200 system-fault LEDs are lit on the media tray LED panel.
To identify the component that is causing the error, locate module that has a lit
error LED.
If the component is a module, replace the module.
Overview of JCS 1200 Diagnostic Tools on page 85
Diagnostic LEDs on the JCS 1200 Platform on page 90
Action
1. Make sure that the JCS 1200 platform is
connected to a compatible power source
(see "Connecting the JCS 1200 AC
Platform to AC Power" on page 62 or
"Connecting the JCS 1200 DC Platform
to DC Power" on page 63).
2. Reseat the following components:
a. Media tray
b. Management module
c. Power modules
3. Contact your Juniper Networks
representative.
Look for any information or error LEDs on the
system LED panels, the modules, and the
Routing Engines in the JCS 1200 platform.
1. Check the error log for messages.
2. Look for a lit error LED on the modules
and Routing Engines to locate a failing
component.