HP 8340b User Manual

Controller
Section
Overall
Assembly-Level
Troubleshooting
Because
problems
on either
the
A57
assembly
or
the
A59
assembly can
show
up
indirectly in
other
areas
of
instrument
operation,
it
is
particularly important
that
you
begin
A57
and
ASS
troubleshooting
in
the
overall
instrument troubleshooting,
located
in
the
service
introduction of
this
manual.
The
majority of controller
functional
group
assembly
level
troubleshooting
is
associated
with
the
A60
processor assembly.
Consequently,
some
A57
and
A59
diagnostics
and troubleshooting
are
included
in
the
A60
information.
There
are
two
levels
of
diagnostics and
troubleshooting
for
the
controller
group:
•
Self
Test
At
power
on
and
at
instrument
preset,
self
tests
perform
diagnostic
checks
on
some
controller
group circuitry.
The
tests performed
are
diagnostic routine
SHIFT
M4
tests
0
through
13,
and
20.
Two
front
panel
LEDs
(CHECK
I
and
II)
provide
a
visual indication of the self test
results,
and
are
explained
in the
AGO
assembly troubleshooting.
•
Assembly
Isolation
Verify individual
assembly
faults
by
removing
the
assembly
and
observing instrument
behavior.
Once
an assembly
is
suspect,
its
replacement
verifies
the
cause
of the
problem.
Self
tests,
diagnostic
tests,
and assembly isolation
procedures
are
described
in
each
assembly trou¬
bleshooting
section.
y^^^^.
I
CAUTION
j
Before
you
remove
an assembly,
disconnect
line
power
and wait several
minutes
for the
A19
power-on
safety
indicator to
go
out.
HP 8340B/41B
Controller
Section
Overall Assembly-Level
Troubleshooting
F-9

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English