IBM 8862 Hardware Maintenance Manual - Page 133
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Note: See Chapter 7, "Parts listing, Types 8861, 8862," on page 139 to determine which components are replaceable by the customer and which components must be replaced by an IBM field service technician. Expansion enclosure problems Symptom FRU/action The SCSI expansion enclosure used to work but does not work now. 1. Verify that: v The cables for all external SCSI options are connected correctly. v The last device in each SCSI chain, or the end of the SCSI cable, is terminated correctly. v Any external SCSI devices are turned on. You must turn on an external SCSI option before turning on the server. 2. For more information, see your SCSI expansion enclosure documentation. Note: See Chapter 7, "Parts listing, Types 8861, 8862," on page 139 to determine which components are replaceable by the customer and which components must be replaced by an IBM field service technician. Hard disk drive problems Symptom FRU/action Not all drives are recognized by 1. Remove the first drive not recognized and try the hard disk drive the hard disk drive diagnostic diagnostic test again. test (Fixed Disk test). 2. If the remaining drives are recognized, replace the drive you removed with a new one. Server stops responding during hard disk drive diagnostic test. 1. Remove the hard disk drive being tested when the server stopped responding and try the diagnostic test again. 2. If the hard disk drive diagnostic test runs successfully, replace the drive you removed with a new one. Hard drive not detected while loading operating system. 1. Verify SCSI backplane is enabled in Configuration/Setup Utility program. 2. Verify LSI driver is loaded. Note: See Chapter 7, "Parts listing, Types 8861, 8862," on page 139 to determine which components are replaceable by the customer and which components must be replaced by an IBM field service technician. General problems Symptom FRU/action Broken cover locks or indicator v Broken CRU/FRU LEDs not working Note: See Chapter 7, "Parts listing, Types 8861, 8862," on page 139 to determine which components are replaceable by the customer and which components must be replaced by an IBM field service technician. Intermittent problems Symptom FRU/action A problem occurs only occasionally and is difficult to diagnose. 1. Verify that: v All cables and cords are connected securely to the rear of the server and attached devices. v When the server is turned on, air is flowing from the rear of the server at the fan grill. If there is no airflow, the fan is not working. This can cause the server to overheat and shut down. v The SCSI bus and devices are configured correctly and that the last external device in each SCSI chain is terminated correctly. 2. Check the system error log. Chapter 6. Symptom-to-FRU index 123