• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See
Chapter 4 “Parts listing, Lenovo System x3550 M3 Type 4254 and 7944” on page 403 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
• If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
Trained service technician.
• 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
Action
A cover latch is broken, an LED
is not working, or a similar
problem has occurred.
If the part is a CRU, replace it. If the part is a FRU, the part must be replaced by a
trained service technician.
The server is hung while the
screen is on. Cannot start the
Setup utility by pressing F1.
1. See
“Nx boot failure” on page 399 for more information.
2. See
“Recovering the server firmware” on page 395 for more information.
Hard disk drive problems
Use this information to solve hard disk drive problems.
362
System x3550 M3Problem Determination and Service Guide
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