IBM 88410EU User Manual - Page 134

General error symptoms Note: See "System replaceable units" on page 144 to determine which components should be replaced by a field service technician. Symptom FRU/action Problems such as broken cover v Broken CRU/FRU locks or indicator LEDs not working Hard disk drive error symptoms Note: See "System replaceable units" on page 144 to determine which components should be replaced by a field service technician. 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. System stops responding during 1. Remove the hard disk drive being tested when the server stopped hard disk drive diagnostic test. 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. Intermittent error symptoms Note: See "System replaceable units" on page 144 to determine which components should be replaced by a field service technician. Symptom FRU/action A problem occurs only occasionally and is difficult to detect. 1. Verify that: v All cables and cords are connected securely to the rear of the server and attached options. 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 causes the server to overheat and shut down. v Ensure that 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 and BMC log. 3. See "Undetermined problems" on page 140. 124 xSeries 236 Type 8841: Hardware Maintenance Manual and Troubleshooting Guide