NEC 320Lb-R manual Problem Solving, Static Precautions

Problem Solving

This chapter helps you identify and solve problems that may occur during system installation or while using your system. The first section of this chapter tells you how to reset your system in the event of problems. The next few sections provide troubleshooting checklists and procedural steps that help you isolate specific system problems. The last section includes BIOS, system, and disk status user information.

Fault-tolerant systems require both hardware and software-based methods of troubleshooting system hardware. Hardware-based troubleshooting relies on status LED indicators and error messages either displayed on a monitor or LCD panel. Software- based troubleshooting is achieved by way of the server manager. Information about hardware failures is viewed from various sources:

!Status LEDs on each hardware component

!Alarm messages on the system monitor and LCD panel

!Windows 2000 Event Log

!System inventory from the Server Manager

The failed system component related to an error condition is identified as a Customer Replaceable Unit (CRU) of which most are hot-pluggable and redundant.

!WARNING

The DC push-button on/off switch on the front of the PCI module does not turn off the system AC power. Also, +5vdc is present on some of the system boards whenever the AC power cord is connected between the system and an AC outlet. Before doing the procedures in this manual, make sure that your system is powered off and unplug the AC power cords from the back of the chassis. Failure to disconnect power before opening your system can result in personal injury and equipment damage

Static Precautions

An electrostatic discharge (ESD) can damage disk drives, option boards, and other components. You can provide some ESD protection by wearing an antistatic wrist strap attached to chassis ground when handling system components.

Electronic devices can be easily damaged by static electricity. To prevent damage, keep them in their protective packaging when they are not installed in your system.

5-2 Problem Solving