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GE AMX-II User Manual

GE AMX-II
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by
GENERAL
ELECTRIC
MEDICAL
SYSTEMS
1-981
À
Indicates
Change
AMX-H
X-RAY
UNIT
SM
A0654E
1.
Turn
circuit
breaker
and
keyed
switch
to
ON.
is
obtained
with
the
trace,
readjust
3A2R34,
per
step
5,
then
readjust
3A2R30
to
obtain
the
A trace.
Repeat
procedure
until
the
center
trace
is
obtained
when
the
x-ray
tube
current
is
100
MA
with
battery
voltage
above
110
VDC.
9.
Turn
keyed
switch
and
circuit
breaker
OFF.
2.
Check
battery
voltage.
It
should
be
greater
than
110
VDC
with
the
control
ON.
3.
Select
50
KVP
and
10
MAS. Make
an
exposure
and
observe
that
the
x-ray
tube
MA
meter
“kicks”
up
scale.
10.
Disconnect
only
the
following
instrumentation.
NOTE:
Tone
“beep”
and
x-ray
on
light
a.
Scope
connections
across
3A2C55
during
exposure.
b.
Filament
transformer
primary
voltage
at
3TB1-12
and
3TB1-18.
4.
Select
80
KVP,
200
MAS.
c.
Replace
3A2
Board
in
card
rack.
5.
&
Take
an
exposure
and
read
the
MA
meter
11.
Check
off
F3316
Functional
Checks
No.
12
and
If
it
is
not 100,
adjust
3A2R34
to
obtain
No.
14.
an
x-ray
tube
current
of
100
MA
+/-
1.0
MA
(CW
to
increase
MA).
NOTE:
Do
not
make
more
than
one
ex-
ri
SHORTING
SWITCH
το
posure
per
minute
to
stay
within
6CBI-8
2TBI-3
tube
ratings.
6.
Make
another
exposure
and
read
the
filament
10.1
SLIDER
_
INITIALLY
transformer
primary
voltage
across
3TB1-12
100
W
SET
FOR
10-OHMS
and
3TB1-18.
Record
this
voltage.
ILLUSTRATION
4-11-32A
7.
For
the
next
check
and
adjustment,
battery
must
be
at
full
charge.
With
power
off,
locate
leads
at
main
power
circuit
breaker
6CB1-B
(heavy
lead).
Remove
leads
from
6CB1-B
and
connect
a
10
ohm,
100
Watt
adjustabie
resistor
and
shorting
switch
as
shown
in
Illustration
4-11-32A
between
the
leads
and
6CB1-B.
Turn
power
on
but
DO
NOT
MAKE
EXPOSURES.
Press
rotor
button
only.
Depress
switch
on
device
shown
in
Illustration
4-11-32A
and
read
voltage
on
DVM
and
adjust
resistor
tap
to
obtain
90
VDC
+
5V.
With
rotor
depressed,
adjust
3A2R30
to
obtain
the
filament
voltage
1
recorded
earlier.
Recheck
this
voltage
with
the
10
ohm
resistor
shorted
(switch
released).
If
difference
in
voltage
is
more
than
+
1
volt,
adjust
3A2R27.
Repeat
checks
and
adjustments
until
change
in
voltage
is
less
than
+
1V
with
+444
VTTTTÝTÝT
21812-P10
ILLUSTRATION
4-11-32
B
Trace:
Filament
voltage
too
high
and
MA
regulator
pulling
down
or
filament
voltage
normal
resistor
in
or
out.
Remove
switch
and
resistor
and
replace
leads
on
6CB1-8.
Observe
MA
stabilizer
signal
on
scope
to
verify
that
filament
voltage
and
adjustments
in
MA
regulator
are
optimum.
Use
80
KVP,
16
MAS.
Settings
of
3A2R30
and
3A2R34
are
correct
if
the
A
scope
trace
is
obtained
when
the
x-ray
tube
MA
meter
reads
100
MA
during
an ex-
posure
of
step
5.
If
more
or
less
than
100
MA
4-11-28
but
regulator
pulling
down
improperly:
Adjust
3A2R30
CCW.
A
Trace:
Filament
voltage
correct
and
MA
regulator
adjusted
correctly.
C
Trace:
Filament
voltage
too
low and
MA
regulator
pulling
up
or
filament
voltage
normal
but
regulator
pulling
up
improperly.
Adjust
3A2R30
CW.

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GE AMX-II Specifications

General IconGeneral
BrandGE
ModelAMX-II
CategoryMedical Equipment
LanguageEnglish

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