IBM B50 manual Step, in theDiagnostics Information for, Multiple Bus Systems, Go to “ -17” on page

Step 1540-15

Look at the FRU part numbers associated with the SRN in "Diagnostics Numbers and Codes" in Diagnostics Information for Multiple Bus Systems.

Have you exchanged all the FRUs that correspond to the failing function codes?

NO	Exchange the next FRU that has not been changed.
	Repeat this step until all the FRUs associated with the SRN have been
	exchanged or diagnostics run with no trouble found. Run diagnostics
	after each FRU is exchanged.
	If a network adapter or system board is replaced, see note 3 on page 2-1.
	Go to "MAP 0410: Repair Checkout	" in theDiagnostics Information for
	Multiple Bus Systems.
YES	If the symptom did not change and all the FRUs have been exchanged,
	call your service support person for assistance.

Step 1540-16

Select Task Selection.

Select Process Supplemental Media, and follow the onscreen instructions to process the media.

Supplemental media must be loaded and processed one at a time.

Did the system return to the TASKS SELECTION LIST after the supplemental media was processed?

NO	Go to “Step 1540-17” on page	2-31.
YES	Press F3 to return to the FUNCTION SELECTION screen.
	Go to “Step 1540-14” on page	2-29,substep 4.

2-307046 Model B50 Service Guide