Lenovo 7Y54, Maintenance Manual

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Figure 93. System-board LEDs
Table 23. System-board LEDs
1
Rear identification LED (blue)
2
System error LED (yellow)
General problem determination procedures
Use the information in this section to resolve problems if the event log does not contain specific errors or the
server is inoperative.
If you are not sure about the cause of a problem and the power supplies are working correctly, complete the
following steps to attempt to resolve the problem:
1. Power off the server.
2. Make sure that the server is cabled correctly.
3. Remove or disconnect the following devices if applicable, one at a time, until you find the failure. Power
on and configure the server each time you remove or disconnect a device.
• Any external devices.
• Surge-suppressor device (on the server).
• Printer, mouse, and non-Lenovo devices.
• Each adapter.
• Hard disk drives.
• Memory modules until you reach the minimum configuration that is supported for the server.
Chapter 4
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Problem determination
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