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 service technician only),” that step must be performed only by a
trained service technician.
v Go to the IBM support Web site at http://www.ibm.com/systems/support/ to check for technical
information, hints, tips, and new device drivers or to submit a request for information.
Symptom Action
An IBM optional device that
used to work does not work
now.
1. Make sure that all of the cable connections for the device are secure.
2. If the device comes with test instructions, use those instructions to test the
device.
3. If the failing device is a SCSI device, make sure that:
v The cables for all external SCSI devices are connected correctly.
v The last device in each SCSI chain, or the end of the SCSI cable, is
terminated correctly.
v Any external SCSI device is turned on. You must turn on an external SCSI
device before you turn on the server.
4. Reseat the failing device.
5. Replace the failing device.
114 IBM System x3650 M4 Type 7915: Problem Determination and Service Guide
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