Intermittent Problems - IBM System x3300 M4 Installation And Service Manual

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v See Chapter 5, "Parts listing, IBM System x3300 M4 Type 7382," on page 303 to check if a component is a
consumable, structural, or FRU part.
v If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
Symptom
A replacement hard disk drive
does not rebuild.
A green hard disk drive activity
LED does not accurately
represent the actual state of the
associated drive.
A yellow hard disk drive status
LED does not accurately
represent the actual state of the
associated drive.

Intermittent problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
Symptom
A problem occurs only
occasionally and is difficult to
diagnose.
Action
1. Make sure that the hard disk drive is recognized by the adapter (the green
hard disk drive activity LED is flashing).
2. Review the SAS/SATA RAID adapter documentation to determine the correct
configuration parameters and settings.
1. If the green hard disk drive activity LED does not flash when the drive is in
use, run the DSA disk drive test (see "Running the DSA Preboot diagnostic
programs" on page 153.
2. Use one of the following procedures:
v If the drive passes the test, replace the backplane.
v If the drive fails the test, replace the drive.
1. If the yellow hard disk drive LED and the RAID adapter software do not
indicate the same status for the drive, complete the following steps:
a. Turn off the server.
b. Reseat the SAS/SATA adapter.
c. Reseat the backplane signal cable and backplane power cable.
d. Reseat the hard disk drive.
e. Turn on the server and observe the activity of the hard disk drive LEDs.
2. See "Problem determination tips" on page 299.
Action
1. Make sure 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 fan grille. If there is no
airflow, the fan is not working. This can cause the server to overheat and
shut down.
2. Check the event logs (see "Event logs" on page 148).
3. See "Solving undetermined problems" on page 298.
Chapter 4. Troubleshooting
281