Emerson ROC827 Removing a License Key, Startup and Operation, To remove a license key

			ROC827 Instruction Manual
2.7.2 Removing a License Key
		To remove a license key:
			Failure to exercise proper electrostatic discharge precautions (such as
	Caution
			wearing a grounded wrist strap) may reset the processor or damage

electronic components, resulting in interrupted operations.

When working on units located in a hazardous area (where explosive gases may be present), make sure the area is in a non-hazardous state before performing procedures. Performing these procedures in a hazardous area could result in personal injury or property damage.

1.Perform the backup procedure described in “Preserving Configuration and Log Data” in Chapter 6, Troubleshooting.

2.Remove power from the ROC827.

3.Remove the wire channel cover.

4.Unscrew the screws from the CPU faceplate.

5.Remove the CPU faceplate.

6.Remove the license key from the appropriate terminal slot (P4 or P6) in the CPU (refer to Figure 2-7).

7.Replace the CPU faceplate.

8.Replace the screws from the CPU faceplate.

9.Replace the wire channel cover.

10.Review “Restarting the ROC827” in Chapter 6, Troubleshooting.

11.Restore power to the ROC827.

2.8Startup and Operation

Before starting the ROC827, perform the following checks to ensure the unit components are properly installed.

ƒMake sure the power input module is properly seated in the backplane.

ƒMake sure I/O and communication modules are seated in the backplane.

ƒCheck the field wiring for proper installation.

ƒMake sure the input power has the correct polarity.

ƒMake sure the input power is fused at the power source.

Issued Mar-06 Installation and Use 2-19