Lenovo System x3750 M4, Installation And Service Manual

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Table 26. Fan problems
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See Chapter 5 “Parts listing, Lenovo System x3750 M4 Type 8753” on page 203 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.
Symptom Action
The fans are running at an
abnormally high revolutions per
minute (RPM). The TEMP LED
may or may not be lit.
1. Check to see if the system inlet perforation or heatsinks are clogged.
2. Make sure that all baffles are installed correctly in the server.
3. Check the thermal grease on the microprocessor. Make sure the thermal grease
is not contaminated.
Hypervisor problems
Use this information to solve hypervisor problems.
Table 27. Hypervisor problems
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See Chapter 5 “Parts listing, Lenovo System x3750 M4 Type 8753” on page 203 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.
Symptom Action
If an optional embedded
hypervisor flash device is not
listed in the expected boot
order, does not appear in the
list of boot devices, or a similar
problem has occurred. 1. Make sure that the optional embedded hypervisor flash device is selected on
the boot manager (<F12> Select Boot Device) at startup.
2. Make sure that the embedded hypervisor flash device is seated in the connector
correctly (see “Removing a USB embedded hypervisor flash device” on page
244 and “Replacing a USB embedded hypervisor flash device” on page 245).
3. See the documentation that comes with the optional embedded hypervisor
flash device for setup and configuration information.
4. Make sure that other software works on the server.
General problems
Use this information to solve general problems.
Table 28. General problems
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• See Chapter 5 “Parts listing, Lenovo System x3750 M4 Type 8753” on page 203 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.
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 (see Chapter 6 “Removing and replacing components” on
page 215 to determine whether the part is a CRU or a FRU).
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Lenovo System x3750 M4 Installation and Service Guide