Solving Undetermined Problems - Lenovo Converged HX Series Installation And Service Manual

• The Ethernet transmit/receive activity LED is lit when the Ethernet controller sends or receives
data over the Ethernet network. If the Ethernet transmit/receive activity is off, make sure that the
hub and network are operating and that the correct device drivers are installed.
Step 5. Check the LAN activity LED on the rear of the server. The LAN activity LED is lit when data is active
on the Ethernet network. If the LAN activity LED is off, make sure that the hub and network are
operating and that the correct device drivers are installed.
Step 6. Check for operating-system-specific causes of the problem.
Step 7. Make sure that the device drivers on the client and server are using the same protocol.
If the Ethernet controller still cannot connect to the network but the hardware appears to be working, the
network administrator must investigate other possible causes of the error.

Solving undetermined problems

If Lenovo ThinkServer Diagnostics Tool cannot diagnose the failure or if the server is inoperative, use the
information in this section to solve the undetermined problems.
If you suspect that a software problem is causing failures (continuous or intermittent), see "Software
problems" on page 61.
Corrupted data in CMOS memory or corrupted UEFI firmware could prevent the system from completing
POST or lead to no screen output after power on. To reset the CMOS data, use the CMOS clear jumper to
clear the CMOS memory and override the power-on password; see "System-board internal connectors" on
page 17 for more information. If you suspect that the UEFI firmware is corrupted, see "Recovering the server
firmware (UEFI update failure)" on page 65.
If the power supplies are working correctly, complete the following steps:
Step 1. Turn off the server.
Step 2. Make sure that the server is cabled correctly.
Step 3. Remove or disconnect the following devices, one at a time, until you find the failure. Turn on the
server and reconfigure it each time.
• Any external devices.
• Surge-suppressor device (on the server).
• Printer, mouse, and non-Lenovo devices.
• Each adapter.
• Hard disk drives.
Note: The minimum configuration required for the server to start is one microprocessor and one 8
GB DIMM.
Step 4. Turn on the server. If the problem remains, suspect the following components in the following
order:
1. Power supply
2. Memory
3. Microprocessor
4. System board
If the problem is solved when you remove an adapter from the server but the problem recurs when you
reinstall the same adapter, suspect the adapter; if the problem recurs when you replace the adapter with a
different one, suspect the riser card.
.
Chapter 3 Troubleshooting
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