Specifications

CHAPTER

3-1

Cisco ONS 15454 Troubleshooting and Maintenance Guide

November 2001

Maintenance

This chapter describes maintenance information and procedures for Cisco ONS 15454, including:

• Air filter inspection and replacement

• Fan-tray assembly replacement

• Alarm interface panel replacement

• System reset

• Database backup and restore

• Reverting to an earlier software load

• Card replacement

• TCC card to TCC+ card upgrade

• XC card to XCVT card upgrade

• XC/XCVT card to XC10G card upgrade

• DS3/DS3N card to DS3E/DS3EN card upgrade

• Span upgrades

• Protection group switching

• Electrical interface assembly (EIA) replacement

• Fiber cleaning

• Powering down a node

3.1 Air Filter Inspection and Replacement

The ONS 15454 contains an air filter that you should remove and visually inspect approximately every

30 days, depending on the cleanliness of the operating environment. NEBS 3E and later versions of the

ONS 15454 use a reusable air filter that is installed either beneath the fan-tray assembly or in the

optional external filter brackets. Earlier versions of the ONS 15454 use a disposable air filter that is

installed beneath the fan-tray assembly only. For more information about filter brackets and air filter

installation, see the “Installation” chapter of the Cisco ONS 15454 Installation and Operations Guide.

Warning

Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed

circuitry could constitute an energy hazard.