HP 8340b User Manual

Controller Section
Repair
Procedure
BATTERY REPLACEMENT
What
the
Battery
Does
The
processor
assembly
battery
(A60B1)
provides
backup
power
to
RAM,
which holds
the
working
calibration
data
and
the
SAVE/RECALL
register
values.
How
Calibration
Data
is
Restored
If
the
battery
is
defective,
or
is
replaced,
the
calibration data and
the
register values
are
lost.
If
RAM
does
lose
its
information,
the
next
time
you
turn
the
instrument
on,
protected
calibration
data
stored
in
EEPROM
loads
into RAM
and
the
instrument
displays
CALIBRATION
RESTORED.
Note,
however,
that
register
values
are
not
restored.
How
Long the Battery
Should
Last
The
battery
provides at
least
two
years
of back
up
power,
and has
a
shelf
life
exceeding
10
years.
It is
not
rechargeable.
WARNING
Although
the battery
has
a
strong
outer
case,
do
not
abuse
it
mechan¬
ically,
electrically, or
thermally.
This
battery
contains
lithium
and
thionyl
chloride
(SOCL;)
and
can
be
a
fire,
explosion,
and
severe
bum hazard
if
abused.
Lithium
can
burn
or explode on contact
with
moisture.
Thionyl
chloride
is
highly
toxic.
On
contact
with
air,
it
partially
breaks
down
into hydrochloric
acid and sulfur
dioxide
fumes,
which
are
toxic,
extremely
repulsive,
strongly irritating, and corrosive
to
eyes,
skin,
lungs,
and
mucous
membranes.
If
a
person
comes
in
contact
with
or
breathes
this
material,
CONTACT
A
POISON
CONTROL CENTER OR
DOCTOR
IMMEDIATELY.
Do
not
try
to
charge
this
battery;
it
may
rupture.
Do
not attempt
to
open
the
battery,
heat
it
above
212°
F
(100°
C),
expose
its
contents
to
water,
or
incinerate
it.
Your
local
laws
may require
the disposal of
thionyl
chloride
or
lithium
in
a
chemical
waste
disposal
site.
You
can return
the battery
to:
Hewlett-
Packard,
1400
Fountaingrove
Parkway,
Santa
Rosa,
California
95401,
Attention:
Environmental Engineering
Department.
Dead batteries have
converted
most
of
the
lithium
and
thionyl
chloride
into
not-toxic
chemicals.
F-26 Controller
Section Repair
Procedure
HP 8340B/41B

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English