HP 8340b User Manual

AGO
Processor
Assembly-Level
Troubleshooting
TYPES
OF
TROUBLESHOOTING
There
are
several
types
of troubleshooting for
the
A60
processor
assembly:
•
Input Signal
Verification.
This
test
checks
several
processor
assembly
input
signals
and should
be
performed
prior
to doing
any
in-depth
troubleshooting.
•
Self
Test.
Self
test
runs when you
turn
the
instrument
on
or when
you
press
[INSTR
PRESET].
Two
front
panel
LEDs
(INSTR CHECK
I
and
INSTR CHECK
II)
provide
a
visual
indication
of the self
check
results.
•
SHIFT
M4.
When
you
initiate this
diagnostic, you
can
check
the
operation
of
specific
circuitry
on
the
A60
processor assembly.
INPUT
SIGNAL
VERIFICATION
When
to
Use Input
Signal
Verification
Use
input
signal
verification
prior
to
in-depth troubleshooting
of the
A60
assembly.
Verification
con¬
sists of
measuring
all
input signals
to the
A60
assembly,
in
addition
to
a
few
key
signals
that
are
required
to
run
self
test.
Equipment
Required
A
DVM
and/or
an oscilloscope.
Procedure
NOTE:
The
A60
processor
is
a
static
sensitive
assembly.
Work
only
at
an
anti-static work
station.
1.
Turn
line
power
off.
Place the
A60
processor
assembly
on
an
extender.
2.
Turn
line
power
on.
3.
Using
A60TP7
or
A60TP17
as
ground,
verify
the
voltages
in
Table
F-2.
HP 8340B/41B
A60
Processor
Assembly-Level Troubleshooting F-13

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English