Symmetricom TimeProvider 1000 User Manual page 149

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
150.
Removing Two IOCs
To remove both IOCs in a shelf, use the following procedure.
1. Save the contents of the Active IOC memory in the IMC by issuing the following
command.
CPY-MEM:::::IOC,IMC,IOC;
This command may take more than two seconds to execute; if it does, then the
In-Process response is issued. See the TimeProvider TL1 Reference Guide for
more information on the CPY-MEM command.
097-58001-02 Revision C – August 2005
Chapter 6 Maintaining and Troubleshooting the TimeProvider
Replacing the
TimeProvider User's Guide 149
Diagnosing the IOC
IOC, on page