Abnormal or unexpected HSL OptiConnect disconnection from a remote system or partition. The local system or partition disconnected from a remote system or partition due to an unexpected event or failure. Licensed Internal Code will attempt to recover from the error. Intervention at the local or remote system or partition might be required. Possible causes include time out, hang, or hardware failure. The problem may be with the local system or partition or the remote system or partition. If a complete RIO or HSL loop did not exist before this error occurred, the cause of this error might be a failure or power down in a RIO or HSL component between the local system or partition and the remote system or partition. Check for SRCs with FRUs that indicate problems with the following:

• RIO or HSL cables
• The RIO or HSL I/Oidge
• Power in an expansion I/O tower or unit on this loop

On the local system or partition, examine the SAL or serviceable event view. Look for failures on the same loop or with the RIO or HSL controller that occurred at approximately the same time as this error. Examine the remote system or partition for problems. Correct any RIO or HSL controller problems you find with the remote and local systems or partitions. If you find no problems with either the local or the remote systems or partitions, collect all the PAL information for this failure on both systems. Be sure to record all words in the SRC. Contact your next level of support.