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9153A-4
Supersedes:
NONE
9153A
TRAVEL:
Return
for
Update:
Use
as
is:
SERVICE
EARLIER:
POTENTIAL
+12
VOLT
SHORT
INVENTORY:
Return
for
Salvage:
See
Text:X
WARRANTY EXTENDED UNTIL:
96/01/88
Situation:
Controller
PCA
PN09153-69502
is
held
in
place
by metal
PC guides
which
are
part
of
the
9153A
chassis.
The
12 Volt
trace
on
this
assembly
runs
close
to
the
edge
of
the
board
which
the
chassis
guides
support.
If the
solder
resist
on
this
trace
flakes
off,
the
potential
for
a
12 Volt
short
exists.
Solder
adhering
to
an
ex-.
posed
section
of the
12 Volt
trace
increases
the
risk
of a short.
The
12V
fuse
on
the power
supply will
blow
if this
trace
shorts
to the
chassis.
Solution:
Controller
boards
with
date
code
2525
and
later
have
1/2
Inch
electrical
tape
over
the
12V
trace.
(Ref.
Fig.
1) If
a
12V
fuse
problem
is
found
in
a 9153A,
in-
spect
the
09153-69502
PCA
to ensure
that
these
traces
have
been
covered
with
tape
per
Fig.
1. Tape
PN0460-0193
has
been
approved
for use
in this
application.
Warranty:
Greeley
Division
will
accept
1 hour
labor
on
extended
warranty
when
a Controller
PCA
PNO9153-69502
is modified
to
correct
a
12V
fuse
problem.
All
service
inven-
tory
shipped
was
date
code
2525
or
later.
KK
06/18/85
C J) HEWLETT
PACKARD
Onagawa
Pretecture,
Japon
729.
YI
Hewlett -Pacbhard
Compara
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