Solving Undetermined Problems - Lenovo ThinkServer TS200 Hardware Maintenance Manual

• Check the Ethernet controller LEDs on the rear panel of the server. These LEDs indicate whether there
is a problem with the connector, cable, or hub.
– The Ethernet link status LED is lit when the Ethernet controller receives a link pulse from the hub. If the
LED is off, there might be a defective connector or cable or a problem with the hub.
– 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 light is off, make sure that the hub
and network are operating and that the correct device drivers are installed.
• 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.
• Check for operating-system-specific causes of the problem.
• 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 the diagnostic tests did not diagnose the failure or if the server is inoperative, use the information in
this section.
If you suspect that a software problem is causing failures (continuous or intermittent), see "Software
problems" on page 61.
Damaged data in CMOS memory or damaged server firmware can cause undetermined problems. To reset
the CMOS data, use the clear CMOS jumper to clear the CMOS memory. If you suspect that the server
firmware is damaged, see "Recovering the server firmware" on page 122.
Check the LEDs on all the power supplies. If the LEDs indicate that the power supplies are working
correctly, complete the following steps:
1. Turn off the server.
2. Make sure that the server is cabled correctly.
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).
• Modem, printer, mouse, and non-Lenovo devices.
• Each adapter.
• Hard disk drives.
• Memory modules. The minimum configuration requirement is two 1 GB DIMM on the system board.
The following minimum configuration is required for the server to start:
• One microprocessor
• One 1 GB DIMM on the system board
• One power supply
• Power cord
• ServeRAID SAS/SATA adapter
• System board
4. Turn on the server. If the problem remains, suspect the following components in the following order:
a. Memory module
b. Microprocessor
c. System board
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Chapter 4 Diagnostics