IBM 8649 Hardware Maintenance Manual - Page 120

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Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field service technician. AC good LED DC good LED Description FRU/action On Off Standby mode or dc problem. 1. Check system board cable connectors J4 and J10. Move switch 7 of SW 1 to bypass power control. If the dc good LED is lit, press Ctrl+Alt+Delete. Watch the screen for any POST errors. Check the System Error Log for any listed problems. If the system starts with no errors: a. Power switch assembly b. System board 2. Remove the adapters and disconnect the cables and power connectors to all internal and external devices. Turn on the system. If the dc good LED is lit, replace the adapters and devices one at a time until you isolate the problem. 3. Power supply. 4. Power cage assembly, if installed. 5. System board. On On Power is working properly. N/A POST error codes In the following error codes, X can be any number or letter. Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field service technician. Error code/symptom FRU/action 062 (Three consecutive boot failures using the default configuration.) 1. Run the Configuration/Setup Utility program. 2. Battery. 3. System board. 4. Microprocessor. 101, 102, 106 (Timer tick interrupt failure) System board 102 (Timer 2 test failure) System board 106 (Diskette controller error) System board 129 (Internal cache (L1) error) 1. Optional microprocessor 2. Microprocessor 151 (Real time clock error) 1. Run diagnostics. 2. Battery. 3. System board. 161 (Real time clock battery error) 1. Run the Configuration/Setup Utility program. 2. Battery. 3. System board. 110 IBM xSeries 225 Types 8649: Hardware Maintenance Manual and Troubleshooting Guide

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Note:
See
“System
replaceable
units”
on
page
122
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
AC
good
LED
DC
good
LED
Description
FRU/action
On
Off
Standby
mode
or
dc
problem.
1.
Check
system
board
cable
connectors
J4
and
J10.
Move
switch
7
of
SW
1
to
bypass
power
control.
If
the
dc
good
LED
is
lit,
press
Ctrl+Alt+Delete.
Watch
the
screen
for
any
POST
errors.
Check
the
System
Error
Log
for
any
listed
problems.
If
the
system
starts
with
no
errors:
a.
Power
switch
assembly
b.
System
board
2.
Remove
the
adapters
and
disconnect
the
cables
and
power
connectors
to
all
internal
and
external
devices.
Turn
on
the
system.
If
the
dc
good
LED
is
lit,
replace
the
adapters
and
devices
one
at
a
time
until
you
isolate
the
problem.
3.
Power
supply.
4.
Power
cage
assembly,
if
installed.
5.
System
board.
On
On
Power
is
working
properly.
N/A
POST
error
codes
In
the
following
error
codes,
X
can
be
any
number
or
letter.
Note:
See
“System
replaceable
units”
on
page
122
to
determine
which
components
should
be
replaced
by
a
field
service
technician.
Error
code/symptom
FRU/action
062
(Three
consecutive
boot
failures
using
the
default
configuration.)
1.
Run
the
Configuration/Setup
Utility
program.
2.
Battery.
3.
System
board.
4.
Microprocessor.
101,
102,
106
(Timer
tick
interrupt
failure)
System
board
102
(Timer
2
test
failure)
System
board
106
(Diskette
controller
error)
System
board
129
(Internal
cache
(L1)
error)
1.
Optional
microprocessor
2.
Microprocessor
151
(Real
time
clock
error)
1.
Run
diagnostics.
2.
Battery.
3.
System
board.
161
(Real
time
clock
battery
error)
1.
Run
the
Configuration/Setup
Utility
program.
2.
Battery.
3.
System
board.
110
IBM
xSeries
225
Types
8649:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide