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097-58001-02 Revision C – August 2005 TimeProvider User’s Guide 151

Chapter 6 Maintaining and Troubleshooting the TimeProvider

Diagnosing the IOC

CPY-MEM:::::IMC,IOC,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.

If you have not stored the contents of the IOC memory in the IMC, then provision

the IOC using the procedures and commands described in Chapter 4,

Provisioning the TimeProvider.

4. Wait for the IOC to reboot and qualify the reference inputs.

Replacing a Redundant IOC

To replace either of two IOCs in a shelf, use the following procedure. Output signals

will not be affected by this procedure. You can also use this procedure to add an

IOC to a shelf that has only one IOC.

1. Install the IOC into the shelf and tighten the captive retaining screws.

2. Wait for the IOC to reboot and qualify the reference inputs. During this time the

Active IOC updates the new IOC’s memory with current values.

Replacing Both IOCs

Use this procedure to replace both IOCs in a shelf. Output signals will resume when

the Active IOC has warmed up and qualified the reference signals. This procedure

assumes that you have stored the contents of the IOC memory in the IMC using the

CPY-MEM command.

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

2. Install the IOC into the left slot of the shelf and tighten the captive retaining

screws. This IOC will become the Active IOC.

3. Wait for the IOC to reboot.

4. Retrieve the contents of the IOC memory stored in the IMC by issuing the

following command.