To view the LEDs on the system board:
1.Turn off the server and any peripheral devices.
2.Remove the cables.
3.Remove the server from the rack and place it on a flat,
4.Remove the server cover (see “Removing the cover” on page 44).
Note: Refer to “Working inside a server with power on” on page 42 for instructions and precautions for working in the server with the power on.
5.Press and hold the Light Path Diagnostics (blue) button on the diagnostics panel. The LEDs will illuminate while the switch is pressed.
Note: You can illuminate the LEDs for a maximum of two minutes. After that time, the circuit that powers the LEDs is exhausted.
Diagnostics panel
The following illustration shows the LEDs on the diagnostics panel on the system board. See Table 3 for information on identifying problems using these LEDs.
Light
Path
PS MEM
TEMP CPU
FAN VRM
SP PCI
Table 3. Light Path Diagnostics.
LED | Description |
|
|
PS | Power supply error |
|
|
MEM | Memory error occurred |
|
|
TEMP | System temperature exceeded maximum rating |
|
|
CPU | Microprocessor error |
|
|
FAN | Fan failed or operating slowly |
|
|
VRM | Voltage regulator module error |
|
|
SP | Error occurred on SP bus |
|
|
PCI | Error occurred on an adapter in PCI slot 1 or 2, or one of the PCI service |
| devices integrated on the system board. |
|
|
See “Information panel system error LED” on page 85 for appropriate action.
14 Hardware Maintenance Manual: xSeries 330
