IBM 867413x - Eserver xSeries 330 8674, Hardware Maintenance Manual

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4. Remove the server/workstation cover (see “Removing the cover” on page 48).
Note: Refer to “Working inside a server/workstation with power on” on
page 46 for instructions and precautions for working in the
server/workstation 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.
PS
TEMP
FAN
SP
MEM
CPU
VRM
PCI
Light
Path
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 service processor
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 121 for appropriate action.
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Hardware Maintenance Manual: xSeries 330 Type 8674, IntelliStation R Pro Type 6851, and Network Equipment Building
System Type 8674