IBM 8478 Hardware Maintenance Manual - Page 12

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3. If the computer hangs with a POST error, go to the Chapter 7, "Symptom-to-FRU index," on page 99. 4. If the computer hangs and no error is displayed, go to "Undetermined problems" on page 116. 5. Power supply problems, see Chapter 7, "Symptom-to-FRU index," on page 99. 6. Safety information, see "Safety information" on page 125. 7. For intermittent problems, check the error log; see "POST error messages" on page 12. 1. IS THE SYSTEM PART OF A CLUSTER? YES. Schedule maintenance with the customer. Shut down all systems related to the cluster. Run storage test. NO. Go to step 2. 2. IF THE SYSTEM IS NOT PART OF A CLUSTER: v Power-off the computer and all external devices. v Check all cables and power cords. v Set all display controls to the middle position. v Power-on all external devices. v Power-on the computer. v Record any POST error messages displayed on the screen. If an error is displayed, look up the first error in the "POST error codes" on page 110. v Check the System Error Log. If an error was recorded by the system, see Chapter 7, "Symptom-to-FRU index," on page 99. v Start the Diagnostic Programs. See "Diagnostic programs and error messages" on page 13. v Check for the following responses: a. One beep. b. Readable instructions or the Main Menu. 3. DID YOU RECEIVE BOTH OF THE CORRECT RESPONSES? NO. Find the failure symptom in Chapter 7, "Symptom-to-FRU index," on page 99. YES. Run the Diagnostic Programs. If necessary, refer to "Diagnostic programs and error messages" on page 13. If you receive an error, go to Chapter 7, "Symptom-to-FRU index," on page 99. If the diagnostics completed successfully and you still suspect a problem, see "Undetermined problems" on page 116. 2 Hardware Maintenance Manual: xSeries 200

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3.
If
the
computer
hangs
with
a
POST
error,
go
to
the
Chapter
7,
“Symptom-to-FRU
index,”
on
page
99.
4.
If
the
computer
hangs
and
no
error
is
displayed,
go
to
“Undetermined
problems”
on
page
116.
5.
Power
supply
problems,
see
Chapter
7,
“Symptom-to-FRU
index,”
on
page
99.
6.
Safety
information,
see
“Safety
information”
on
page
125.
7.
For
intermittent
problems,
check
the
error
log;
see
“POST
error
messages”
on
page
12.
1.
IS
THE
SYSTEM
PART
OF
A
CLUSTER?
YES.
Schedule
maintenance
with
the
customer.
Shut
down
all
systems
related
to
the
cluster.
Run
storage
test.
NO.
Go
to
step
2.
2.
IF
THE
SYSTEM
IS
NOT
PART
OF
A
CLUSTER:
v
Power-off
the
computer
and
all
external
devices.
v
Check
all
cables
and
power
cords.
v
Set
all
display
controls
to
the
middle
position.
v
Power-on
all
external
devices.
v
Power-on
the
computer.
v
Record
any
POST
error
messages
displayed
on
the
screen.
If
an
error
is
displayed,
look
up
the
first
error
in
the
“POST
error
codes”
on
page
110.
v
Check
the
System
Error
Log.
If
an
error
was
recorded
by
the
system,
see
Chapter
7,
“Symptom-to-FRU
index,”
on
page
99.
v
Start
the
Diagnostic
Programs.
See
“Diagnostic
programs
and
error
messages”
on
page
13.
v
Check
for
the
following
responses:
a.
One
beep.
b.
Readable
instructions
or
the
Main
Menu.
3.
DID
YOU
RECEIVE
BOTH
OF
THE
CORRECT
RESPONSES?
NO.
Find
the
failure
symptom
in
Chapter
7,
“Symptom-to-FRU
index,”
on
page
99.
YES.
Run
the
Diagnostic
Programs.
If
necessary,
refer
to
“Diagnostic
programs
and
error
messages”
on
page
13.
If
you
receive
an
error,
go
to
Chapter
7,
“Symptom-to-FRU
index,”
on
page
99.
If
the
diagnostics
completed
successfully
and
you
still
suspect
a
problem,
see
“Undetermined
problems”
on
page
116.
2
Hardware
Maintenance
Manual:
xSeries
200