Solving Sas Hard Disk Drive Problems - IBM x iDataPlex dx340 Series Problem Determination 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 3, "Parts listing," on page 59 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.
System event log message
Domain B Therm 2
PSU Fan1
PSU Fan2
PSU Fan3
PSU Fan4

Solving SAS hard disk drive problems

For any SAS error message, one or more of the following devices might be causing
the problem:
v A failing SAS adapter or drive
v An incorrectly installed cable
v A defective cable
v SAS backplane
For any SAS error message, follow these suggested actions in the order in which
they are listed until the problem is solved:
1. Make sure that external SAS devices are turned on before you turn on the
2. Make sure that the cables for all external SAS devices are connected correctly.
3. Make sure that the SAS devices are configured correctly.
Sensor
number
(Hex) Action
F5 No action is required for lower temperature alerts (for example,
Lower Critical).
For upper temperature alerts, complete the following steps:
1. Check all fans and the server for proper cooling.
2. Reseat the thermistor connector located on the power-supply
paddle card and make sure that the sensor is properly
mounted.
F6
1. Check the connections to the system fans.
2. Reseat the fan.
3. Replace the fan.
F7
1. Check the connections to the system fans.
2. Reseat the fan.
3. Replace the fan.
F8
1. Check the connections to the system fans.
2. Reseat the fan.
3. Replace the fan.
F9
1. Check the connections to the system fans.
2. Reseat the fan.
3. Replace the fan.
server.
55
Chapter 2. Diagnostics