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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
service technician.
v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information,
hints, tips, and new device drivers or to submit a request for information.
Symptom
A green hard disk drive activity
LED does not accurately
represent the actual state of the
associated drive.
An 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
service technician.
v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information,
hints, tips, and new device drivers or to submit a request for information.
Symptom
A problem occurs only
occasionally and is difficult to
diagnose.
170
System x iDataPlex dx360 M4 Types 7912 and 7913: Problem Determination and Service Guide
Action
If the green hard disk drive activity LED does not flash when the drive is in use,
run the DSA Preboot diagnostic programs to collect error logs (see "Running the
diagnostic programs" on page 190).
v If there is a hard disk drive error log, replace the affected hard disk drive.
v If there is no disk drive error log error log, replace the affected backplane.
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 258.
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 system-error log or IMM2 system event log (see "Event logs" on
page 16).
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