IBM 847651U Handbook - Page 245
Option problems, Action, turn on an external SCSI option before turning
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Page 245 highlights
Troubleshooting Option problems An IBM option that used to work does not work now. Action Verify that all of the option hardware and cable connections are secure. If the option comes with its own test instructions, use those instructions to test the option. If the failing option is a SCSI option, verify that: 1. The cables for all external SCSI options are connected correctly. 2. The last option in each SCSI chain, or the end of the SCSI cable, is terminated correctly. 3. An external SCSI option is turned on. You must turn on an external SCSI option before turning on the system. For more information, refer to your SCSI documentation and see Chapter 4, "Installing options" on page 67. If the items above are correct and the diagnostic tests found no problem, have the server and option serviced. Chapter 5. Solving problems 211
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