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

DLP-525

Page 2 of 6

Note: The Version B RLX switches can be enabled or disabled by the MPU if the jumpers are in place. But the switches' jumper settings themselves (FFhex or 7Fhex for the Channel Blocking Idle switch; –130V or ±130V for the Line Power switch) cannot be overridden by the MPU.

Note: The B1 RLX factory default setting for the Channel Blocking Idle Code jumper is 7Fhex; the B1 RLX factory default setting for the Line Power jumper is –130 VDC. The B2 RLX+ factory default setting for the Channel Blocking Idle Code jumper is FFhex; the B2 RLX+ factory default setting for the Line Power jumper is –130 VDC. A missing jumper in the Channel Blocking Idle Code causes a default to FFhex. A missing jumper in Line Power causes a default to no voltage output.

Note: If the Line Power jumper is set, it must also be enabled, which is done through software.

Reference: DLP-534RLX Configuration

3.Refer to your work order to determine which RLX slots are to be used. Slot locations are illustrated in Figure 525-4.Chassis slots 1-1 through 7-4 correspond to DS1 signals 1 through 28 as shown in Table 525-1.

Reference: TAD-106Access Identifier

4.Align the RLX module with the slots and slide it into the chassis. Use the ejector to press the RLX module into the backplane connector until it is properly seated. If there is excessive resistance to insertion, remove the unit and check for improper alignment or obstructions.

5.Observe the front panel LED indicators as shown in Figure 525-5and verify that each LED operates as specified in the initial start-up test.

•If the STATUS LED is green following self-test, continue to Step 5.

•If the STATUS LED is red, the RLX has failed self-test diagnostics. Remove and then reinsert the RLX and then wait while the RLX again performs self-test diagnostics. If the STATUS LED turns red at the end of the second self-test, the RLX is defective. Remove and replace the RLX, and then repeat Steps 1 through 5.

6.Press the LMPTST switch on the APU and verify that all indicators light yellow.

•If Yes, continue to Step 7.

•If No, replace the RLX module and go to Step 1.

Note: An MPU must be present for a Version B RLX lamp test. The MPU does not need to be present for a Version A RLX lamp test.

7.If the Span Power (in the Version A RLX) option or Line Power (in the Version B RLX) option is selected in Step 1, measure DC voltage and DC current being supplied to the repeater.

Reference: DLP-567RLX Voltage to Repeater Test

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© 2000, ADC Telecommunications, Inc.