Removal And Replacement Procedures; Removing An I/O Module; Adding Or Replacing An I/O Module; Troubleshooting - Cisco VCO/4K Mechanical Assemblies

Hide thumbs Also See for VCO/4K:

Table of Contents

Removal and Replacement Procedures

7.0 Removal and Replacement Procedures

Follow these steps to remove an I/O module.

NOTE: An I/O module is generally not subject to failure. A DIN or MDF connector may become

loose if excessive force is applied to the MDF cable(s). If intermittent problems occur with

network services, check the network lines/trunks, MDF cross-wiring, and MDF cable before

removing the module.

Take the port interface cards, in the module locations, out-of-service (OOS). For information about

taking cards OOS, refer to the Cisco VCO/4K System Administrator's Guide.

From the back of the system, unscrew the top and bottom fasteners for the card.

NOTE: The same mounting hardware is used for all I/O module assemblies.

Pull the module away from the backplane.

CAUTION: Do not attempt to pry the I/O module from the backplane using a

screwdriver or some other tool. The tip of the prying tool could damage the

backplane and/or DIN connectors.

Use these steps to replace/add an I/O module.

Press the module firmly into the DIN connectors on the backplane.

Tighten the mounting screws.

Connect the MDF cables onto the appropriate connectors on the adapter.

NOTE: Verify that the system database entries correspond to the type of module and port

interface cards installed at the adapter's R-L-S locations.

If problems occur with the network interface, check all cable and cross-wiring connections to

and from the MDF. Examine a suspect module for signs of physical damage (cracked

connectors, damaged wires, etc.). Correct the cause of the damage by reconnecting MDF cables

and cross-wiring and/or rerouting cables to avoid future problems.

1-26

Cisco VCO/4K Mechanical Assemblies

Table of Contents