Light Path Diagnostics Table - IBM JS20 - BladeCenter - 8842 Installation And User Manual

See "Light path diagnostics table" for:
v An illustration that shows the location of the light path diagnostics button and
v A table that describes the error LEDs and the actions that you should take if

Light path diagnostics table

Use Table 2 on page 82 to help determine the cause of the error and the action that
you should take.
Notes:
v Power is available to light the light path diagnostics LEDs for a short period of
v Error LED CR29 is not used.
v For the locations of the corresponding dual inline memory module (DIMM)
DIMM 1 error
LED (CR40)
error LEDs
these LEDs are lit
time after the blade server is removed from the BladeCenter unit. During that
period of time, you can light the light path diagnostics LEDs for a maximum of 25
seconds (or less, depending on the number of LEDs that are lit and the length of
time the blade server is removed from the BladeCenter unit) by pressing the light
path diagnostics button (SW1).
sockets and microprocessor connectors on the system board, see the illustration
in "System-board internal and option connectors" on page 15.
DIMM 3 error DIMM 2 error
LED (CR46) LED (CR45)
DIMM 4 error
LED (CR53)
Microprocessor 0
error LED (CR19)
Temperature
error LED (CR16)
Light Path Diagnostics
(SW1)
Microprocessor 1
error LED (CR58)
Service processor
error LED (CR27)
NMI error
LED (CR17)
System board
error LED (CR20)
Reserved (CR29)
Chapter 7. Solving problems
81