Symmetricom 1100 User Manual

Chapter 6 Maintaining and Troubleshooting the TimeProvider

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

the shelf.

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 

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

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.

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 

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

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.

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