HP 8753D Option 011 User Manual

Error
Messages
Three error
messages are
asso
ciated
with
the
p
o
w
er
supplies
functional
group.
They are
sho
wn
here.
POWER
SUPPLY SHUT
DOWN!
One or
more supplies
on the
A8 p
ost
regulator
assem
bly
is
sh
ut
do
wn
due
to
one
of
the
follo
wing
conditions:
o
v
ercurren
t,
o
v
erv
oltage,
or
underv
oltage.
Refer
to
\If the
Red LED
on
A15
is
ON"
earlier
in
this
pro cedure.
POWER SUPPLY
HOT
The
temperature
sensors on
the
A8
p
ost
regulator
assem
bly
detect
an
o
v
ertemp
erature
condition.
The
regulated
p
o
w
er
supplies
on
A8
ha
v
e
b
een
shut
down.
Chec
k
the
temp
erature
of
the
op
erating
en
vironmen
t;
it
should
not b
e greater
than +55

C
(131

F).
The fan
should b
eop
erating
and
there
should
b
e
at
least
15
cm
(6
in)
spacing
b
ehind
and
all
around
the
analyzer
to
allo
w
for
prop
er
v
en
tilation.
PROBE
POWER
SHUT
DOWN!
The
fron
t
panel
RF
prob
e
biasing supplies
are sh
ut do
wn
due
to
excessiv
e
curren
t
dra
w.
These
supplies
are
+15VPP
and
0
12.6VPP
,
b
oth
supplied
b
y
the
A8 p
ost regulator.
+15VPP is
deriv
ed
from
the
+15
V
supply
.
0
12.6VPP
is
deriv
ed
from
the
0
12.6
V
supply
.
5-16 Power Supply Troubleshooting DRAFT
3/21/106 15:12
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HP 8753D Option 011 Specifications

General

Brand	HP
Model	8753D Option 011
Category	Measuring Instruments
Language	English