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9153B-2
SERVICE
NOTE
Supersedes:
None
' 9153B
APPLIES TO:
All
Units:
X
Only
Units
on Agreement:
Immediately:
X
At
PM/Normal
Call:
Serial number:
PARTS:
See Text
FSI
Only
TRAVEL:
SERVICE
Return
for
Update:
Use
as
is:
Controller
PCA
Part
Number
INVENTORY :
Return for Salvage:
See Text:X
09153-69510
Changed
to 09153-69520.
WARRANTY EXTENDED UNTIL:
NAR
Situation:
A
firmware
bug
has
been
found
on
the
9153B/4B
controller
board,
exchange
part
number
09153-69510.
If
a
user
formats
a
microfloppy
disc
and
the
disc
has
a
defective
track
which
is
spared
out,
the
disc
will
operate
normally
until
ejec-
ted.
After
being
ejected
the
first
time
this
disc
will
appear
to
be unformatted
and
all
data will
be inaccessible
on
any disc
drive.
Note:
NO UNITS
have
been
shipped
to customers
with
this
bug,
ONLY
FSI
is affected.
Solution:
Rework
all
09153-69510
exchange
boards
to
09153-69520.
These
boards
can
be
reworked
in
the
field
by
ordering
kit
part
number
09153-89901
and
following
the
instructions
in
the
kit.
The
kit
contains
two
new
EPROMs,
instructions,
and
a
label
to change
part
number
to 09153-69520.
Warranty:
GLD
(5800)
will
pay
for
1/4
hour
labor
and
part
number
09153-89901
to
rework
ex-
change
part
number
09153-69510.
RP
11-10-86
Ikanagawa
Prefecture,
Japan
229.
1983
Hewlett-Packard
Company
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