IBM 7012 G Series, Service Manual

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3-1540-16
Service Guide
Step 16
(from Steps 14 and 15)
In the following order, exchange the FRUs that have not been exchanged:
1. SCSI adapter
2. CD-ROM drive (if still in the system).
3. System Board (ELM)
4. SCSI cable
Test each FRU by trying to load diagnostics from CD-ROM if installed or
disk.
Were you able to identify the failing FRU?
NO One of the FRUs remaining in the system unit is defective. Go to Step 17.
YES Replace the failing FRU. Go to “Map 0410: Repair Checkout” in the
Diagnostic Information For Micro Channel Bus Systems.