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9153A-9
SERVICE
NOTE
Supersedes:
None
9153A
APPLIES
TO:
Al Units
BÉ
Oniy Units on
o
Agreement/
Warrant
immediate!
At PM/N
{Cell
PERFORM:
Eee
oo
Disc
Drive
On Failure C]
information Only PY
WARRANTY :
EXTENDED
NORMAL
Serial
number:
LABOR:
NA
PARTS:
TRAVEL:
3.5
Inch
Disc
Drive
PN
09153-69111
Changes to 09153-69121
accede
peed
INVENTORY
Return for salvage []
WARRANTY
EXTENDED
UNTIL:
N/A
Symptom:
Some
3.5
Inch
Winchester
Drives,
PN09153-69111
may
fail
to
spin
up
at
power-
on.
The
host
will
report
an
error
message
indicating
that
the
drive
cannot
be
found
or
that
it is unable
to access
the
drive.
The
exact
error
message
received
is
dependent
on
the
host
computer
used.
The
failure
mode
can
also
be
recognized
by listening
to determine
if
the
motor
is
actually
spinning
up.
Cause:
3.5
Inch
Winchester
drives
with
electrical
date
code
2521
or
lower
were
manufactured
using
a
lubricant
that
can
outgas
or
migrate
into
the
head/media
chamber
under
certain
circumstances.
This
can
leave
a
residue
on
the
disc
surface
that
can
cause
the
head
to
adhere
to
the
surface,
prohibiting
the
motor
from
spinning.
A
substantial
outgassing
is
required
to
cause
a
functional
problem.
Customer
units
that
have
had
this
problem
have
been
early
failures.
The
drives
which
were
manufactured
with
this
lubricant
can
also
be
identified
by
a
serial
number
located
on
a
bar
code
label
on
the
side
of
the
mechanism.
Units
with
Serial
9000
and
above
or
electrical
date
code
2537
and
above
did
not
use
the
lubricant
anywhere
in
the
manufacturing
process.
Solution:
KK
03/24/86
Kin
HEWLETT
PACKARD
Kanagawa
Prefecture,
Japan
229.
1983
Hewlett-Packard
Company
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