Seagate ST3390N Installationsanleitung PDF herunterladen (Seite 274)

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101

16-2 Troubleshooting startup problems

Overview

Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999

Overview

Introduction

When you follow the procedures in this section, always go to

the next step as long as the fault persists. When the fault has

cleared, reconnect or replace items as necessary. Then ensure

that the power is on, and replace the panels (unless instructed

otherwise).

Powering down a node

or the system

Several troubleshooting procedures recommend that you power

down a node or the entire system. You can power down a node

that does not contain a utility card at any time without affecting

call activity on other nodes.

If the node to be powered down contains a utility card, you must

power down the entire system.

If you need to power down the entire system, begin by

performing a courtesy down procedure, then disable the nodes,

and finally power down the system. This ensures that users do

not experience abrupt termination of service.

For more information on how to courtesy down nodes and

the system, refer to the System Administration Guide

(NTP 555-7001-301).

If the system has more than one Meridian Mail module, power

off module MM2, followed by module MM1, followed by

module MM0. Power on the modules in the opposite order.

In an AC system, switch off the lower breaker in each module

before the upper breaker. Switch on the breakers in the opposite

order.

CAUTION

Risk of equipment damage

You may blow the fuses on the utility card

if you do not follow the sequence of steps

outlined in this manual to power up or

power down your Meridian Mail system.

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