Intermittent Problems - IBM x3690 X5 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 4, "Parts listing, System x3690 X5 Types 7147, 7148, 7149, and 7192," on page 249 to determine
which components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
Trained service 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.
An amber 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 See Chapter 4, "Parts listing, System x3690 X5 Types 7147, 7148, 7149, and 7192," on page 249 to determine
which components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
Trained service technician.
Symptom
A problem occurs only
occasionally and is difficult to
diagnose.
54
System x3690 X5 Types 7147, 7148, 7149, and 7192: Problem Determination and Service Guide
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 81.
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 amber 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 246.
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 35).
3. See "Solving undetermined problems" on page 245.