Symmetricom 1000, 1100 manual Removing a Redundant IOC

Chapter 6 Maintaining and Troubleshooting the TimeProvider

Diagnosing the IOC

4.Loosen the captive retaining screws and pull out on them to unseat the IOC from the shelf.

Warning: To avoid possible electrostatic damage to the IOC, place it in a static-free bag or on a static-free surface.

5.Place the IOC in a static-free bag or on a static-free surface.

6.Install a new IOC using the appropriate procedure in Replacing the IOC, on page 160.

Removing a Redundant IOC

To remove one IOC when two IOCs are in a shelf, use the following procedure.

Note: To avoid generating unnecessary alarms, be sure to take the IOC out of service before removing it.

Caution: To avoid a loss of output signals, do not take the only

IOC in a shelf out of service.

1. Issue the following command to take the IOC out of service:

ED-EQPT::IOCm:::IOCSTATE=OOSRV;

where m is 1 or 2, and depends on the slot in which the IOC is installed (1 is the left slot and 2 is the right slot).

An IOC that is out of service cannot be selected to generate or monitor outputs. An out-of-service IOC does not generate alarms.

2.Attach a wrist grounding strap and connect it to the TimeProvider chassis.

3.Loosen the captive retaining screws and pull out on them to unseat the IOC from the shelf.

Warning: To avoid possible electrostatic damage to the IOC, place it in a static-free bag or on a static-free surface.

4.Place the IOC in a static-free bag or on a static-free surface.

5.Install a new IOC using the appropriate procedure in Replacing the IOC, on page 160.

097-58001-02 Revision G – April 2008 TimeProvider User’s Guide 159