IBM 7026-H80 Service Guide - Page 378
SCAN_ERROR_CHRP, at byte 60 of the detail data.
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Table 8. Common Firmware Error Codes (continued) Error Code Description Action/ Possible Failing FRU B1xx 4690 Operating system surveillance time out (AIX to service processor interface failure) 1. This error code indicates that the operating system terminated early (which usually implies an operating system crash). This error code may appear in the service processor error log by itself. However, in the AIX error log, there should be another error which points to the cause of the operating system crash. Use the other error as the starting point for your service action. 2. The other possibility is that the operating system was not found during a prior boot attempt. To determine if this occurred, do the following: Look at the AIX error log entry containing B1xx4690. This will be a ″SCAN_ERROR_CHRP″ error with an identifier of BFEC0425. In the detail data, find the string ″B1xx4690″ (If present, it will be at byte 60 of the detail data.) Then go forward 8 bytes after the ″B1″ to byte 68 and look at bytes 68 and 69. If the values of bytes 68 and 69 are A2B0, this indicates that the firmware was unable to find a bootable device in the boot list that is set in the SMS menus. If the system is up, the boot list problem has been corrected and the B1xx 4690 can be treated as an informational message with no actions required. 3. Call service support 360 Service Guide