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Important: You have up to 12 hours to use the Light Path Diagnostic LED's after AC
power has been removed from the server/workstation. After 12 hours you must
power the server/workstation up again to be able to use the Light Path Diagnostic
LEDs to help locate system errors.
To view the LEDs on the system board:
1.
2.
3.
4.
5.
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.
Table 3. Light Path Diagnostics.
14
Hardware Maintenance Manual: xSeries 330 Type 8674 and IntelliStation R Pro Type 6851
Turn off the server/workstation and any peripheral devices.
Remove the cables.
Remove the server/workstation from the rack and place it on a flat, non-
conductive surface.
Remove the server/workstation cover (see "Removing the cover" on page 49).
Note: Refer to "Working inside a server/workstation with power on" on page 47
for instructions and precautions for working in the server/workstation
with the power on.
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.
Light
Path
PS
MEM
TEMP
CPU
FAN
VRM
SP
PCI
LED
PS
Power supply error
MEM
Memory error occurred
TEMP
System temperature exceeded maximum rating
CPU
Microprocessor error
FAN
Fan failed or operating slowly
Description
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