IBM LS42 - BladeCenter - 7902, Руководство по обслуживанию

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After you remove the blade server, you can press and hold the light path
diagnostics switch for a maximum of 25 seconds to light the LEDs and locate the
failing component. The following components have this feature:
v
Hard disk drives
v
Light path diagnostics panel
v
Microprocessors
v Memory modules (DIMMs)
Viewing the light path diagnostics LEDs
Before you work inside the blade server to view light path diagnostics LEDs, read
the safety information that begins on page “Safety statements” on page viii and
“Handling static-sensitive devices” on page 26.
If an error occurs, view the light path diagnostics LEDs in the following order:
1. Look at the control panel on the front of the blade server (see “Blade server
controls and LEDs” on page 3).
v
If the information LED is lit, it indicates that information about a suboptimal
condition in the blade server is available in the BMC log or in the
management-module event log.
v If the blade-error LED is lit, it indicates that an error has occurred; go to step
2.
2. To view the light path diagnostics panel and LEDs, complete the following
steps:
a.
Remove the blade server from the BladeCenter unit (see “Removing the
blade server from a BladeCenter unit” on page 27).
b. Place the blade server on a flat, static-protective surface.
c. Remove the cover from the blade server (see “Removing the blade server
cover” on page 29).
d. Press and hold the light path diagnostics switch to light the LEDs of the
failing components in the blade server. The LEDs will remain lit for as long
as you press the switch, to a maximum of 25 seconds.
The following illustration shows the locations of the blade server system-board
error LEDs and light path diagnostics panel.
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BladeCenter LS22 Type 7901 and LS42 Type 7902: Problem Determination and Service Guide