Hard disk drive error symptomsNote: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionNot all drives are recognized bythe hard disk drive diagnostictest (Fixed Disk test).1. Remove the first drive not recognized and try the hard disk drivediagnostic test again.2. If the remaining drives are recognized, replace the drive you removed with anew one.System stops responding duringhard disk drive diagnostic test. 1. Remove the hard disk drive being tested when the server stoppedresponding and try the diagnostic test again.2. If the hard disk drive diagnostic test runs successfully, replace the drive youremoved with a new one.Intermittent error symptomsNote: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionA problem occurs onlyoccasionally and is difficult todetect.1. Verify that:v All cables and cords are connected securely to the rear of the server andattached options.v When the server is turned on, air is flowing from the rear of the server at thefan grill. If there is no airflow, the fan is not working. This causes the serverto overheat and shut down.v Ensure that the SCSI bus and devices are configured correctly and that thelast external device in each SCSI chain is terminated correctly.2. Check the system-error log and BMC log.3. See “Undetermined problems” on page 104.Keyboard, mouse, or pointing device error symptomsNote: See “System” on page 108 to determine which components should be replaced by a field service technician.Symptom FRU/actionAll or some keys on thekeyboard do not work. 1. Verify that:v The keyboard cable is securely connected to the system, and the keyboardand mouse cables are not reversed.v The server and the monitor are turned on.2. Keyboard.3. System board.The mouse or pointing devicedoes not work. 1. Verify that:v The mouse or pointing-device cable is securely connected, and that thekeyboard and mouse cables are not reversed.v The mouse device drivers are installed correctly.2. Mouse or pointing device.3. System board.Chapter 6. Symptom-to-FRU index 93