8-6
Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-7824-06
Chapter 8 Troubleshooting
Troubleshooting Overview
Problem Solving Using a Subsystems Approach
• Identifying Startup Problems
• Troubleshooting the Power Subsystem
• Troubleshooting the Firmware Package Installation
• Troubleshooting the Management Subsystem
• Troubleshooting the Link Interface Subsystem
Identifying Startup Problems
Startup problems are commonly due to the source power or to a poor cable connection.
When you start up the SCE 2000 platform for the first time, you should observe the startup sequence
described in the “Basic SCE 2000 Platform Operations” section on page 1. This section contains a more
detailed description of the normal startup sequence and describes the steps to take if the system does not
perform that sequence as expected. LEDs indicate all system states in the startup sequence. By checking
the state of the LEDs, you can determine when and where the system failed in the startup sequence. Use
the following descriptions to isolate the problem to a subsystem, and then proceed to the appropriate
sections to try to resolve the problem.
When you start up the system by turning on the power supply switch, the following should occur:
Table 8-3 Power Supply LEDs
LED Label Color State Function
IN Green On The input voltage is in
the required range.
Off The input voltage is not
in the required range.
OK Green On The output voltage is in
the required range
(between 11.9 and 12.1
VDC).
Off The output voltage is
not within the required
range (is greater than
12.1 VDC or less than
11.9 VDC).
Power A/B (front panel) Green Steady Corresponding power
supply unit is present
and functioning
normally.
Red Steady Corresponding power
supply unit present, but
malfunctioning.
Off Corresponding power
supply unit is either not
present or has failed.