ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance

DLP-519

Page 2 of 3

1.To save the replacement MPU’s current configuration data, upload configuration data to the host computer. Contact the Technical Assistance Center at ADC Telecommunications, described in the General Information section of this manual, for more information.

Reference: DLP-554Configuration Data Upload Command

2.Locate the mounting slot designated for the MPU as shown in Figure 519-1.

3.Align the edges of the module printed circuit card with the guides in the chassis slot. Use the injector at the bottom of the front panel to press the MPU into the chassis. If there is excessive resistance to insertion, remove the module and check for improper alignment and obstructions.

Note: If you are not sure that the MPU’s database is cleared, contact the ADC Technical Assistance Center at 1-800-366-3891, ext. 3223, or 1-612-946-3223 for more information.

4.Use the screw provided to secure the MPU to the top edge of the chassis.

5.Observe the STATUS LED as shown in Figure 519-2. Initially, the status LED will be yellow while the MPU performs self-test diagnostics. When the self-test diagnostics are successfully completed, the STATUS LED will turn green.

•If the STATUS LED is green, continue to Step 6.

•If the STATUS LED is red, the MPU has failed self-test diagnostics. Press the MPU RESET switch and then wait while the MPU again performs self-test diagnostics. If the STATUS LED turns red at the end of the second self-test, the MPU is defective. Remove and replace the MPU, and then repeat Steps 2 through 5.

6.Press the LMPTST switch on the APU to verify that the STATUS LED on the MPU front panel lights yellow. This indicates that the LED is functional. If the STATUS LED does not light yellow, the MPU is defective. Remove and replace the MPU, and then repeat Steps 2 through 5.

7.Connect a VT-100 (or equivalent) control terminal or host computer to the MPU Craft port. Reference: DLP-504Local Craft Interface Connection

8.Turn the power on to the control terminal or host computer and press Enter or Return. The Logon screen appears.

9.Logon to the Craft Interface and check the status of each transmission module to verify that the configuration data is correct.

Reference: DLP-526Craft Interface System Logon

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© 2000, ADC Telecommunications, Inc.