Avaya S8700 Maintenance Manual page 2138

For multi-connect configurations

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Table of Contents

Maintenance-Object Repair Procedures

Table 8-570. TEST #778 SNC On-Board Test — Continued

Description / Recommendation

SNC firmware is not able to run the test.

1. Retry the command at 1-minute intervals up to 3 times.

The SNC circuit pack is not responding to test requests sent by software.

1. Run the test led switch-node for the switch node where this board resides

2. If the LEDs on the other boards in the carrier light, but the LEDs on this

3. If none of the LEDs light for the boards in the same carrier as this board, fix

The SNC circuit pack has on-board microcontroller failure.

The SNC circuit pack has a problem with its clock; firmware has detected a

phase-locked loop failure, an inability to lock, or a failure of the clock drivers.

The SNC circuit pack has a problem with the SNC on-board Stratum-3

The SNC circuit pack has a problem with the TPN microcontroller.

1. Replace the SNC circuit pack.

No problems exist with the on-board functions verified by this test.

Issue 1 May 2002

to verify whether the LEDs on the board light.

board do not light, run test 760 via test board UUCSS l for the active SNC

in this carrier. Wait 5 minutes and then try step 1 one more time. If the

LEDs on this board still do not light, replace this board. Replacing an SNC

may be service interrupting. See

Pack)'' on page 8-1384

for the procedure for replacing an SNC.

any problems associated with the connectivity of this carrier to the server.

a. Use the list fiber link command to obtain a list of the fiber connections

to this carrier.

b. Check the LEDs on every SNI and EI, and fix any fiber problems.

c. Enter display errors, and follow the associated repair procedures for

any EXP-INTF error entries associated with the controlling

IPSI-connected EPN.

d. Follow the associated repair procedures for any SYNC, SNI-BD,

SNC-BD, FIBER-LK, or SNI-PEER error entries.

''SNC-BD (Switch Node Clock Circuit

Continued on next page

Troubleshooting