IBM JS20 User Guide - Page 93

Light, diagnostics, table

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See "Light path diagnostics table" for: v An illustration that shows the location of the light path diagnostics button and error LEDs v A table that describes the error LEDs and the actions that you should take if these LEDs are lit 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 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). v Error LED CR29 is not used. v For the locations of the corresponding dual inline memory module (DIMM) sockets and microprocessor connectors on the system board, see the illustration in "System-board internal and option connectors" on page 15. DIMM 3 error LED (CR46) DIMM 1 error LED (CR40) DIMM 2 error 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

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See
“Light
path
diagnostics
table”
for:
v
An
illustration
that
shows
the
location
of
the
light
path
diagnostics
button
and
error
LEDs
v
A
table
that
describes
the
error
LEDs
and
the
actions
that
you
should
take
if
these
LEDs
are
lit
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
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).
v
Error
LED
CR29
is
not
used.
v
For
the
locations
of
the
corresponding
dual
inline
memory
module
(DIMM)
sockets
and
microprocessor
connectors
on
the
system
board,
see
the
illustration
in
“System-board
internal
and
option
connectors”
on
page
15.
DIMM 1 error
LED (CR40)
DIMM 3 error
LED (CR46)
DIMM 2 error
LED (CR45)
DIMM 4 error
LED (CR53)
Microprocessor 1
error LED (CR58)
Microprocessor 0
error LED (CR19)
Temperature
error LED (CR16)
NMI error
LED (CR17)
System board
error LED (CR20)
Service processor
error LED (CR27)
Light Path Diagnostics
(SW1)
Reserved (CR29)
Chapter
7.
Solving
problems
81