Lenovo 7Y54, Maintenance Manual

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4. If the error recurs with the highest device resource setting (1GB), shutdown the system and remove
some PCIe devices; then, power on the system.
5. If the reboot failed, repeat step 1 to step 4.
6. If the error recurs, press Enter to access System Setup Utility.
7. Select
System Settings
➙
Devices and I/O Ports
➙
PCI 64–Bit Resource Allocation
, then; modify
the setting from
Auto
to
Enable
.
8. If the Boot Device does not support MMIO above 4GB for Legacy Boot, use UEFI Boot Mode or remove/
disable some PCIe devices.
9. Contact Lenovo technical support.
A Lenovo optional device that was just installed does not work.
1. Make sure that:
• The device is supported for the server (see
https://static.lenovo.com/us/en/serverproven/index.shtml
).
• You followed the installation instructions that came with the device and the device is installed
correctly.
• You have not loosened any other installed devices or cables.
• You updated the configuration information in system setup. When you start a server and press the
key according to the on-screen instructions to display the Setup Utility. (For more information, see the
“Startup” section in the LXPM documentation compatible with your server at
https://
sysmgt.lenovofiles.com/help/topic/lxpm_frontend/lxpm_product_page.html
.) Whenever memory or any
other device is changed, you must update the configuration.
2. Reseat the device that you have just installed.
3. Replace the device that you have just installed.
4. Reseat the cable connection and check there is no physical damage to the cable.
5. If there is any cable damages, then replace the cable.
A Lenovo optional device that worked previously 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. Reseat the cable connection and check if any physical parts have been damaged, .
4. Replace the cable.
5. Reseat the failing device.
6. Replace the failing device.
Serial-device problems
Use this information to solve problems with serial ports or devices.
• “Number of displayed serial ports is less than the number of installed serial ports” on page 110
• “Serial device does not work” on page 111
Number of displayed serial ports is less than the number of installed serial ports
Complete the following steps until the problem is solved.
1. Make sure that:
• Each port is assigned a unique address in the Setup utility and none of the serial ports is disabled.
• The serial-port adapter (if one is present) is seated correctly
2. Reseat the serial port adapter.
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ThinkSystem SR150 Maintenance Manual