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Front SAS drive
System board
error LED (P1-D1)
error LED (P1)
Figure 4. Light path diagnostic LEDs
Light path diagnostics LEDs
Light path diagnostics is a system of LEDs on the control panel and on the system
board of the blade server. When an error occurs, LEDs are lit throughout the blade
server. If the control panel indicates an error, use the descriptions of the LEDs to
diagnose the problem and take corrective action.
Table 32 describes the LEDs on the system board and suggested actions for
correcting any detected problems.
Table 32. Light path diagnostic LED descriptions
v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v See Chapter 3, "Parts listing, Type 7998," on page 235 to determine which components are CRUs and which
components are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Lit light path
diagnostics LED
Description
None
An error has occurred and cannot be isolated,
or the service processor has failed.
Battery error
A battery error occurred.
P1-E1 BATT
Power LED
(always on when plugged in)
PCIe high-speed
Battery error
expansion card
LED (P1-E1)
error LED (P1-C11)
DIMM 1 error LED
(P1-C1)
DIMM 2 error LED
(P1-C2)
DIMM 3 error LED
(P1-C3)
DIMM 4 error LED
(P1-C4)
PCI-X expansion card
error LED (P1-C10)
DIMM 5 error LED
(P1-C5)
DIMM 6 error LED
(P1-C6)
DIMM 7 error LED
(P1-C7)
DIMM 8 error LED
(P1-C8)
Management
card error LED
(P1-C9)
Action
An error has occurred that is not represented
by a light path diagnostics LED. Check the
management-module event log for information
about the error.
1. Reseat the battery, as described in
"Installing the battery" on page 268.
2. Replace the battery, as described
in"Removing the battery" on page 267 and
"Installing the battery" on page 268.
Chapter 2. Diagnostics
219
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