Contents
Safety
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. vii
Guidelines
for
trained
service
technicians
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. viii
Inspecting
for
unsafe
conditions
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. viii
Guidelines
for
servicing
electrical
equipment
.
.
.
.
.
.
.
.
.
.
.
.
. viii
Safety
statements
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. ix
Chapter
1.
Introduction
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 1
Related
documentation
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 1
Notices
and
statements
in
this
document
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 2
Features
and
specifications
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 3
Blade
server
controls
and
LEDs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 4
Turning
on
the
blade
server
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 6
Turning
off
the
blade
server
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 6
System
board
layouts
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 7
System
board
connectors
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 7
System
board
switches
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 8
System
board
LEDs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 9
Chapter
2.
Diagnostics
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 11
Diagnostic
tools
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 11
POST
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 11
POST
beep
codes
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 12
POST
error
codes
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 15
Error
logs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 22
Checkout
procedure
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 24
About
the
checkout
procedure
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 24
Performing
the
checkout
procedure
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 24
Troubleshooting
tables
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 25
General
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 25
Hard
disk
drive
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 26
Intermittent
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 26
Keyboard
or
mouse
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 27
Memory
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 28
Microprocessor
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 28
Monitor
or
video
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 29
Network
connection
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 30
Optional-device
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 30
Power
error
messages
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 31
Power
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 33
Removable-media
drive
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 35
ServerGuide
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 36
Service
processor
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 36
Software
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 37
Universal
Serial
Bus
(USB)
port
problems
.
.
.
.
.
.
.
.
.
.
.
.
.
. 37
Light
path
diagnostics
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 38
Viewing
the
light
path
diagnostics
LEDs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 38
Light
path
diagnostics
LEDs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 41
Diagnostic
programs,
messages,
and
error
codes
.
.
.
.
.
.
.
.
.
.
.
. 42
Running
the
diagnostic
programs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 43
Diagnostic
text
messages
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 43
Viewing
the
test
log
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 44
Diagnostic
error
codes
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 44
Recovering
from
a
BIOS
update
failure
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 50
©
Copyright
IBM
Corp.
2006
iii
Summary of Contents for LS21 - BladeCenter - 7971
Page 1: ...BladeCenter LS21 Type 7971 and LS41 Type 7972 Problem Determination and Service Guide...
Page 2: ......
Page 3: ...BladeCenter LS21 Type 7971 and LS41 Type 7972 Problem Determination and Service Guide...
Page 8: ...vi BladeCenter LS21 Type 7971 and LS41 Type 7972 Problem Determination and Service Guide...
Page 16: ...xiv BladeCenter LS21 Type 7971 and LS41 Type 7972 Problem Determination and Service Guide...
Page 78: ...62 BladeCenter LS21 Type 7971 and LS41 Type 7972 Problem Determination and Service Guide...
Page 116: ...100 BladeCenter LS21 Type 7971 and LS41 Type 7972 Problem Determination and Service Guide...
Page 128: ...112 BladeCenter LS21 Type 7971 and LS41 Type 7972 Problem Determination and Service Guide...
Page 129: ......
Page 130: ...Part Number 24R9695 Printed in USA 1P P N 24R9695...