Procedure
121
Perform the action for the symptom
that
best describes the type
of
failure.
Symptom
Intermittent disk errors.
Note: A disk utility (diskette
60), IBM
part
6374373,
is
available to
analyze intermittent disk
problems.
Cannot
perform
an
IPL from disk.
An
SRC indicates
that
the disk drive
is
defective.
Action
1.
Analyze ERAP for disk SRCs.
If
an
SRC
is
present,
perform the procedure indicated by the SRC.
Use
procedure "803 Analyzing Disk Drive
ERAP"
on
page
8-3
for more information on analyzing disk drive
ERAP.
If
this does
not
solve the problem continue with
step
2.
2.
Power
off
the
5363
System Unit.
3.
Remove the
5363
System
Unit
cover ("305 Cover
Removal" on page 3-2).
4. Reseat the cards and cables in the
5363
System Unit, go to
"220 Board Locations"
on
page
2-8.
5.
Reinstall the
5363
System
Unit
cover.
6.
Power on the
5363
System Unit.
7.
Perform
an
IPL
of
the
5363
from disk, select function
1,
enter 0000.
If
an SRC
is
displayed, perform the procedure
that
matches the SRC.
Note:
If
the
FRU
indicated
is
a disk drive, perform the
Disk Drive Reload procedure
on
this page.
Run
SYSTEST for
10
minutes to verify the problem
is
fixed ("328 Service Procedures under SSP"
on
page 3-10)
and
("360 Getting
ERAP
Reports"
on
page 3-24).
Before performing a disk drive reload, go to
"804 Disk Drive
Isolation
Procedure" on page 8-4, then perform the Disk
Drive Reload procedure to verify
that
the failure is
not
caused
by bad
data
on the
5363
disk drive.
If
the Disk Drive Reload procedure does
not
solve the
problem, perform the procedure
that
matches the SRC.
Run
SYSTEST for
10
minutes to verify any exchanged
FRU
("328 Service Procedures under SSP"
on
page 3-10).
Disk Drive Reload
This procedure
is
used to determine
if
the disk drive A failure
is
caused by bad system microcode, bad SSP
code,
or
bad
data.
1.
Reload the system microcode to disk drive A and perform an
IPL
from disk. See the following:
a.
"312 Performing a System Reset" on page
3-6.
b. "321 Auto Configuring the System"
on
page
3-7.
Section
1.
System Entry and
FRU
Isolation Procedures 1-5
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