GE AMX-II User manual

GE Medical Systems
Technical
Publications
Service Manual SM A0654E
Revision 3-1684
AMX-IT X-Ray
Unit
Product
Operating Documentation

DAMAGE IN TRANSPORTATION
All packages should be closely examined at time of delivery. If damage is
apparent, have notation of “bad order” placed by the delivering driver on
ail copies of the freight or express bill. If damage is of a concealed nature,
notify transportation agent as soon as possible to make an “inspection report
of damage” but in any event not later than 15 days after delivery. A trans-
portation company usually will not pay a claim for concealed damage if an
inspection is not requested within this 15 day period. Complete instructions
regarding claim procedure are found in section ‘’$’’ of the Policy & Proce-
dure Bulletins.
If shipment was handled by moving van service - uncrated - call Traffic -
Milwaukee immediately when any damage is found. Do not attempt to call
any local agent. At this time be ready to describe type of damage, type of
equipment, serial numbers and if possible the order number.
The above paragraph is in regard to equipment requiring installation only,
and does not apply to supply items. The F.0.B. point for these items is as
shown in the Price Book.
GE Medical Systems
GE Medical Systems: | Telex 3797371
20 Box 414, Milwaukee, Wisconsin 53201 USA
(Asia, Pacific, latin America, North America)
GE Medical Systems—Europe: Telex 261794
Shortlands, Hammersmith, London WE SEX UK

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-H X-RAY UNIT
3-1684 SM A0654E
TABLE OF CONTENTS
CHAPTER 1 es OPERATING INSTRUCTIONS
OM A0654E
CHAPTER2 .......................... DOES NOT APPLY
CHAPTER 3 .......................... INSTALLATION
CHAPTER 4 ......................... ADJUSTMENT AND CALIBRATION
CHAPTER5 .......................... FUNCTIONAL CHECK
CHAPTER 6 .......................... THEORY AND SERVICE
СНАРТЕВ 7 ............. —— _ SCHEMATICS
CHAPTER8 ......................... PREVENTIVE MAINTENANCE
CHAPTER 9 ......................... RENEWAL PARTS

GE Medical Systems
Technical
Publications
OPERATING MANUAL
OM A0654E
3-1684
АМХ-П
X-Ray Unit
Product
Operating Documentation

OPERATING MANUAL
OM A0654E
3-1684
AMX-II
X-Ray Unit
IMPORTANT!... X-RAY PROTECTION
X-ray equipment if not properly
used may cause injury. Accord-
ingly, the instructions herein con-
tained should be thoroughly read
and understood before you
attempt
to place this equipment
in operation. The General Electric
Company, Medical Systems
Group, will be glad to assist and
cooperate in placing this equip-
ment in use.
Although this apparatus incor-
porates a high degree of pro-
tection against x-radiation other
than the useful beam, no prac-
tical design of equipment can
provide complete protection. Nor
can any practical design compel
the operator to take adequate
precautions to prevent the possi-
bility of any persons carelessly,
unwisely, or unknowingly expos-
ing themselves or others to
radiation.
it is important that everyone hav-
ing anything to do with x-radia-
tion be properly trained and fuily
acquainted with the recommen-
dations of the National Council
on Radiation Protection and Mea-
surements as published in NCRP
Reports available from NCRP
Publications, 7910 Woodmont
Avenue, Room 1016, Bethesda,
Maryland 20814, and of the Inter-
national Commission on Radia-
tion Protection, and take ade-
quate steps to insure protection
against injury.
All persons authorized to use the
equipment must be cognizant of
the danger of excessive exposure
to x-radiation and the equipment
is sold with the understanding
that the General Electric Com-
pany, Medical Systems Group, its
agents, and representatives have
no responsibility for injury or
damage which may result from
exposure to x-radiation.
Various protective material and
devices are available. It is urged
that such materials or devices be
used.

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-II X-RAY UNIT
3-1684 OM A0654E
VERTICAL
COLUMN
X-RAY TUBE UNIT
HV CABLES
SENTRY COLLIMATOR
TELESCOPING
ARM
X-RAY CONTROL
ACCESS COVER
CASSETTE
TRAY
SAFETY
BUMPER
23561-P 10
AMX-II X-RAY WITH
TUBE UNIT AND SENTRY COLLIMATOR
ILLUSTRATION 1-1

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-il X-RAY UNIT
1-981 OM A0654E
AMX-11 X-RAY UNIT
FOREWORD
The AMX-II X-Ray Unit consists of a full wave 500 Hz single phase x-ray generator control and transformer,
rechargeable battery, tube support column with x-ray tube unit and collimator, all mounted on a self-
propelled mobile base.
Operation of the AMX-Il X-Ray Unit consists of driving the mobile unit, positioning and making an x-ray
exposure, and recharging the battery. An understanding of the specific operative steps and various switch,
signaling, and lockout devices is essential. Therefore, these directions should be read carefully and thorough-
ly understood before attempting to operate the AMX-il X-Ray Unit.
COMPONENT MODEL NUMBERS NAMEPLATE LOCATIONS
Basic Unit, Control
Mobile Base, Support Column
115V 50/60 Hz 46-165600G 10, G12, G14, Beneath exposure control
G15 Handswitch bracket on
front of unit.
230V 50/60 Hz 46-165600G11
X-Ray Tube Unit 46-155750G2, G3, G4 Cathode trim cap housing
Rear Trim Cover
Collimator 46-177399G1-G2 or Bottom - Rear of
46-194759G1 Trim Cover
HV Transformer 46-150625G1 On side of transformer
beneath terminal strip
Battery (cell group) 46-152812P 1 End of cell group case
Extension Cylinder (optional) 46-138573G1 On body of cylinder
WARNING
Explosion Hazard - Do not use in the presence of flammable anesthetics. This X-ray equipment is
dangerous to both patient and operator unless safe exposure factors are observed. Sold only to be used
by or on the prescription of a licensed physician.

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-il X-RAY UNIT
1-981 OM A0654E
SAFETY PRECAUTIONS
RADIATION: Always consider providing radiation protection for your patient and yourself when
operating the AMX-II.
GOOD OPERATING PRACTICES
© Wear a lead apron while operating the x-ray controls of the AMX-II.
e Step back at least 6 ft. (1.8m) from the AMX-II or to the full extension of the
handswitch cord before making an exposure.
e Always use the proper field sizes and technic factors for each procedure to minimize
x-ray exposure and produce the best diagnostic results.
© When x-raying bed patients, move them as far as possible from nearby beds.
e Ask visitors to step outside the room during an exposure.
e Use gonadal shields for patients whenever possible.
EXPOSURE PROFILE
Illustration 1-1A shows the iso-exposure profile of the AMX-II. This profile shows
the typical scattered radiation levels around an AMX-H using chest radiography
technics.
NOTE: This profile is only an indication of typical scattered radiation levels.
Variations in equipment performance, patient size, technic, geometry, and
radiation measuring devices may cause the profile to vary slightly from the
one shown here.
0.1 mR/exposure
1.0 mR/exposure
Contours are at eye level for a 5 ft. 8 inch (1.73m)
person
Bone and tissue equivalent rubber phantom
80 kVp, 5 mAs
0-5 mR /exposure 40 în. SID, 14 x 17 in. field
> A κ SCALE
X x
33121-010 0.5 1.0 Ft
AMX-II ISO-EXPOSURE PROFILE
ILLUSTRATION 1-1A

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-II X-RAY UNIT
1-981
OM A0654E
Under most conditions, cumulative radiation dose to the operator will not exceed recommended maximum
permissible levels. However, as with all radiation-producing devices, a gualified radiation expert should
evaluate situations involving frequent exposures using high kVp and mAs technics to determine if extra
protective devices are necessary.
/
NOTE: Recommended maximum permissible dose to the eyes is 100 mrem/week (NCRP no. 39, p. 89),
where a dose of 1 mrem is produced by an exposure to 1 mR of x-radiation.
ELECTRICAL SHOCK
WARNING:
BATTERY
WARNING:
An audible tone and/or red X-RAY light indicates presence of radiation. If
either indicator is on at any time other than during the expected X-RAY
exposure interval, immediately release the handswitch ROTOR and/or X-RAY
button and turn off main circuit breaker. Do not energize the unit again
until it has been checked by a qualified x-ray serviceman.
This unit contains a 120 volt rechargeable battery inside the cabinet. It can
cause electrical shock even when the unit is not connected to a power outlet.
"The x-ray control access door, shown in Illustration 1-1, can be opened only
by removing the cover. Because of the possible electrical shock and other
hazards present when this cover is removed, it should be removed only by a
trained x-ray serviceman when the unit requires servicing.
Unauthorized persons should not remove the cassette tray shown in
Illustration 1-1.
The cassette tray should not be removed except by or in the presence of a
person thoroughly familiar with safe nickel-cadmium battery service pro-
cedures given in Chapter 8 of the AMX-II X-Ray Unit Service Manual.
Should a metallic object come in contact with the battery terminals, a small
one would vaporize and a large one would become very hot. If the object is,
for example, a ring or a wrist watch, it may weld to a terminal and the wearer
could be severely burned or injured by moiten metal.
The Electrolyte used in nickel-cadmium batteries is a caustic solution of
potassium hydroxide. Serious burns will result if it comes in contact with
any part of the body.
If Electrolyte gets on the skin, wash the affected areas with large quantities
of water; then neutralize skin with vinegar, lemon juice, or 3% acetic acid.
If Electrolyte gets into the eyes, flush with water and GET IMMEDIATE
MEDICAL ATTENTION.
When recharging the battery, the x-ray unit must be located in a large ventila-
ted room. During normal charging conditions and when all batteries are func-
tioning properly, there is little or no gas emitted. Should abnormal conditions
develop, there could be an accumulation of hydrogen gas which if confined in
a small space would be explosive in the presence of a flame or electrical spark.
Whenever the batteries are being charged, a fan ventilates the battery compart-
ment. A hazardous situation will not develop where the overflow from this
compartment is into a large room or a well ventilated small room.
3

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-Il X-RAY UNIT
1-981 OM A0654E
UNIT ON CHARGE ON CHARGE
LAMP LAMP COMPLETE
LAMP
BATTERY
CONDITION
INDICATOR
KEYED
X-RAY
METER
GENERATOR
STANDBY
BATTERY
SWITCH
VOLTAGE
COMPENSATOR
KVP SELECTOR
SWITCH MAS SELECTOR
SWITCH
“> X-RAY ON LAMP
READY
LAMP
=
~ —
MAIN
POWER
hs
circuit
DIRECTION ee na BREAKER
SELECTOR
ーー
パテ
ーー
с e UT BRAKE
SWITCH \ 一 HANDLE
га
DRIVE
ASSIST
о
y
—
SPEED
BUTTON
ILLUSTRATION
1-2
23563210
CONTROL
FUNCTIONAL DESCRIPTION
The MAIN POWER CIRCUIT BREAKER disconnects the Battery. It must be ON in order to charge the
unit, drive it from one location to another, and make exposures.
The keyed X-RAY GENERATOR STANDBY SWITCH is turned to OFF when the AMX-II is being driven
or is not in use, to ON for exposures, and to CHARGE when charging the batteries. A key is provided for
this switch to assure that only authorized personnel operate the unit. The key should be taken out of the
socket and retained by the designated operator immediately after a scheduled period of x-ray operation.
The BATTERY CHARGER recharges the internal battery from any 115v or 230v, 50-60 Hz power outlet
receptacle. The unit may not be driven or an x-ray exposure cannot be made when the battery charger
plug is in a power outlet receptacle.
The x-ray unit battery should be charged (as described under OPERATION) whenever the BATTERY
CONDITION needle enters the red band. It should be allowed to charge until the amber CHARGE COM-
PLETE lamp giows, and the BATTERY CONDITION indicator needle is in the green band. Typically,
the battery will charge from too low (red band) to full charge in less than 10 hours. Since the charger is
self-regulating, it is permissible to have it connected to power indefinitely.
CAUTION: ALWAYS LOCATE THE UNIT IN A WELL VENTILATED ROOM WHEN CHARGING IT.
The SPEED CONTROL will vary the speed of the unit in forward or reverse. When released, it will return
to the zero speed position.
The SAFETY BUMPER, located on the front of the unit, will disconnect the drive motor and stop the unit
upon impact with any object.
The DRIVE ASSIST BUTTON, when pressed, will increase the low speed torque of the drive motor. It is
a spring loaded button which should be used when climbing an incline or when moving over the edge of
carpeting or other small floor discontinuities.

GENERAL
ELECTRIC
MEDICAL
SYSTEMS
АМХ-И
X-RAY
UNIT
1-981
|
OM
A0654E
COLUMN
EXPOSURE
CONTROL
HAN DSWITCH
BATTERY
CHARGER
CORD &
PLUG
ILLUSTRATION 1-3. 23564P10
The
BRAKE
HANDLE
is
used
to
steer
the
unit,
and
automatically
engages
the
brakes
and
disconnects
the
drive
motor
when
released.
The BATTERY VOLTAGE COMPENSATOR SWITCH adjusts for variations in battery charge. When the
battery meter is in the HIGH region, the switch should be in the HIGH position. As the battery charge is
reduced to the LOW region, the switch should be in the LOW position. After battery charging is completed,
allow the following condition for at least 15 minutes before making exposures: Keep the MAIN POWER
BREAKER at ON. If the line cord is left connected, set the KEY SWITCH at CHARGE. However, if the
line cord is disconnected, set the KEY SWITCH at ON.
The
Remote Exposure Contro! Handswitch (Illustration 1-3) has ROTOR and X-RAY buttons. Provided
that the red UNIT ON fight is glowing, depressing the rotor button will cause x-ray tube anode rotation
and filament preheating. There will be a 2.5 second delay for these functions to reach the operating point.
After that delay, the white READY lamp will glow. Then the x-ray exposure will occur immediately after
the
handswitch X-RAY button is depressed.
If the ROTOR and X-RAY buttons are depressed simultaneously, the x-ray exposure will occur after the
2.5 second delay and as the READY lamp flashes on.
In order to obtain an exposure, the MAIN POWER CIRCUIT BREAKER must be ON, the X-RAY
GENERATOR STANDBY SWITCH must be ON, and the charger cord disconnected from the power outlet.
Glow of the red X-RAY lamp indicates that x-rays are being emitted. When the READY lamp is glowing,
the X-RAY lamp will glow immediately after the handswitch X-RAY button is depressed and it will remain
5

GENERAL ELECTRIC MEDICAL SYSTEMS | | | AMX-il X-RAY UNIT
1-981 OM A0654E
ARM
INTERLOCK TELESCOPING YOKE ROTATION TUBE UNIT
COLUMN BUTTON ARM LOCK ROTATION LOCK
X-RAY
. TUBE
UNIT
LATCH
BAR
A o
VERTICAL LATCH
ILLUSTRATION 1-4 ARM TELESCOPING YOKE COLLIMATOR
LOCK ARM LOCK
23565-P 10
on for the time interval equal to the MAS selected divided by 100. All exposures with the AMX I! will be
at 100 milliamperes. Therefore, exposure time may be determined by dividing the MAS selection by 100.
For example, if 300 MAS is selected, the lamp will glow for three seconds or if 2.0 MAS is selected it will
glow for 0.02 seconds.
During the time that the X-Ray lamp glows, there will also be an audible tone signal to indicate that x-rays
are being produced. At the low MAS selections, this signal will be a short beep. For longer exposures there
will be a sustained tone.
WARNING: | If either the X-RAY lamp glow or the tone signal continues longer than 3 seconds under any
circumstances, immediately release handswitch ROTOR and X-RAY buttons and turn the
main power circuit breaker OFF.
In such a case, another exposure should not be attempted until the unit has been examined by a qualified
x-ray serviceman.
The Vertical Column supports the telescoping arm, x-ray tube unit and collimator. It rotates in a bearing
structure in the base of the unit.
To rotate the vertical column, move the telescoping arm to the desired position. 360° of movement
is possible. A friction brake holds the vertical column in place. If the column drifts after positioning,
call for service.
The VERTICAL ARM LOCK, Illustration 1-4, will secure the telescoping arm in any position. If the arm
drifts when the lock is released, call for service. If the counterbalance system should fail, a safety device.
locks the arm in position, and the unit must be serviced before it can be used again.
6

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-Il X-RAY UNIT
1-981
OM A0654E
ADDITIONAL E
1
and
2
MM
A
κ
ENS
mm
”
n
ROTATIONAL
DETENT
ALUMINUM
1
Ču
m
PLUNGER
KNOB
SELECTIVE
(ON
RIGHT
HAND
SIDE)
FILTERS
`` CALIBRATED SCALE
DRUM
[~~ FIELD LIGHT BUTTON
|
i
i
[OX BLADE CONTROL
KNOBS
TRACKS FOR
y=
一
一
一
EXTENSION
CYLINDER
———— MEASURING TAPE
16942-P10
ILLUSTRATION 1-5
The Telescoping Arm consists of two movable sections and one stationary section. The sections extend and
retract equally as the arm is repositioned.
The TELESCOPING ARM LOCK, located beneath the middle section, will secure the telescoping arm in
any position.
The YOKE ROTATION LOCK allows the tube to be rotated +/-180° about the horizontal axis and locked
in any position.
The ARM INTERLOCK BUTTON will maintain the telescoping arm in the maximum retracted position.
When driving the AMX-!| from room to room, the telescoping arm is secured by means of the LATCH
and LATCH BAR. The telescoping arm must be in the position shown in Illustration 1-1. The LATCH at
the bottom of the telescoping arm automatically latches to the LATCH BAR when they are joined. To
release, rotate the latch clockwise and raise the telescoping arm.

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-ll X-RAY UNIT
1-981 OM A0654E
The yoke supporting the Tube Unit can be rotated 180 degrees about the horizontal axis in either direction
of the central position (x-ray port pointing straight downward). It can be positively retained in any inter-
mediate position by the YOKE ROTATION LOCK.
The TUBE UNIT ROTATION LOCK, located on the yoke clamp, locks or releases the Tube Unit for
rotation in the yoke clamps toward or away from the column. Two index lines, one on the Tube Unit and
one on the yoke clamp, may be used to place the central x-ray beam axis in the vertical plane.
The X-Ray Tube Unit is an HRT - O9N with a 1.0 mm focal spot.
The Sentry Manuai Collimator is used with the AMX-!| X-Ray Unit. The collimator limits patient rad-
iation exposure to a desired area at a given distance from the x-ray tube focal spot.
Minimum Source-to-Skin distance is limited to more than 30 centimeters by the tracks on the bottom of
the collimator for mounting the accessory Extension Cylinder.
Area of coverage is indicated by light from a GE Quartz!ine® high-intensity lamp. Distinct shadow cross
hairs, which indicate the field center, aid in accurate radiographic positioning.
The collimator has a fixed minimum filtration equivalent to 1.5mm of aluminum measured at 150 kvp, so
that a total filtration of 2.5mm of aluminum equivalent results from the tube-coilimator combination. By
inserting the 1mm and/or 2mm filter in the slot on the left side of the collimator, additional selective
filtration of 1, 2, or 3mm of aluminum equivalent may be obtained.
Dial numbers on the Calibrated Scale Drum, Illustration 1-5, are for 40, 48, 60, and 72 inch source-to-
image distances and standard film sizes of 5 through 17 inches (13 cm through 43 cm). To select the scale
for one of the four source-to-image distances, rotate the drum by turning the SCALE SELECTION KNOB
until the desired detent position is reached. Two moving pointers sweep across the scale upon actuation of
the BLADE CONTROL KNOBS permitting easy selection of the field size. The upper pointer indicates
the transverse dimension while the lower pointer indicates the longitudinal dimension.
Independent adjustment is provided by the BLADE CONTROL KNOBS on the face of the collimator.
They allow collimating to any desired rectangular field size up to 17” x 17” (43 cm x 43 cm) at a 40”
source-to-image distance. The right-hand knob controls the transverse dimension, while the left-hand knob:
controls the longitudinal dimension, while the left-hand knob controls the longitudinal dimension.
Depressing the FIELD LITE BUTTON energizes the high-intensity lamp. A timer automatically
switches the light off in approximately 15 to 20 seconds to keep lamp operation at a minimum. This time
interval can be adjusted by the serviceman if the user so desires.
NOTE: An interlock allows exposures and turns off the field light when x-ray rotor handswitch is en-
ergized.
The collimator can be rotated and locked positively at 0°, +/- 159, +/-45°, and +/- 90° from the front
position by detent. Depress the ROTATIONAL DETENT PLUNGER KNOB on the right side of the
collimator to move it from a detent position. Keep the plunger knob depressed until the approximate
position desired is reached. Then release the button and rotate the collimator slightly about this position
until the lock snaps in place.

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-il X-RAY UNIT
1-981 . OM A0654E
A Measuring Tape is provided on the center line of the bottom of the collimator housing. It is calibrated in
inches and centimeters for measuring source-to-image distances. The correct source-to-image distance is
indicated by having the bottom of the collimator housing even with the marking on the tape which
corresponds to the desired source-to-image distance. For accurate measurements, have the tape tab on
the end of the tape straight down, not perpendicular to the tape.
Parallel tracks on the bottom of the collimator housing accept an optional extension cylinder. Slide the
extension cylinder into the tracks from the front of the collimator until the cylinder latch snaps into the
slot on the right track. Press the latch to release the cylinder for removal. The added weight of the extension
cylinder will affect the counterbalance of the vertical column. Lock the vertical arm when installing or
removing the extension cylinder and apply extra caution when positioning the unit with the extension
cylinder installed.

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-li X-RAY UNIT
1-981 OM A0654E
OPERATION
Before operating the unit read the Warning on page 1 and the Safety Precautions on page 2.
Driving the Mobile Unit
1. Loosen the Telescoping Arm Lock and withdraw the arm until the interlock button is heard to click.
Tighten the Telescoping Arm Lock.
Remove the Extension Cylinder, if used.
Rotate the column until the arm is facing the operator.
Loosen the Vertical Arm Lock and slowly lower the arm until the latch and latch bar are seen to
engage. Secure the Carriage Lock.
5. Check that the Yoke Rotation Lock and Tube Rotation Lock are secure.
6. Be sure the charger cable plug is removed from a power outlet and retracted.
CAUTION: WHEN DRIVING THE UNIT THROUGH DOORS, BE SURE TO PARK THE TUBE UNIT
AS SHOWN ON ILLUSTRATION 1-1 TO PREVENT STRIKING DOOR CASINGS AND
DAMAGING THE TELESCOPING ARM.
Turn the Main Circuit Breaker to ON.
Move the Direction Switch to FORWARD or REVERSE as desired.
Depress the Brake Handle.
10. Rotate the Speed Control toward the x-ray control to increase speed.
11. Steer the unit with the Brake Handle.
12. To aid in climbing ramps or moving the unit onto thick carpeting, press the Drive Assist Button with
the left thumb while keeping the Brake Handle depressed.
CAUTION: DRIVE ASSIST OPERATION IS NOT RECOMMENDED WHILE POSITIONING THE
UNIT FOR RADIOGRAPHS OR WHILE MANEUVERING THE UNIT THROUGH
DOORWAYS OR CONGESTED CORRIDORS.
13. If the Bumper contacts any object when moving forward, the unit will stop. To regain drive control,
the unit must be manually pushed back.
CAUTION: DO NOT DEPRESS THE BRAKE HANDLE WHEN THE SPEED CONTROL IS SET TO
FULL SPEED. ALWAYS START AT ZERO SPEED.
Positioning and Making an Exposure
This operative procedure presupposes that preliminary steps have been completed. These inciude position-
ing the patient, placing the cassette in position, selecting KVP, MAS, etc.
1. Check that charger cable plug is removed from the power outlet.
2. Release the LATCH and raise the telescoping arm.
3. Rotate the column so the arm points in the desired position.
4
Loosen the Telescoping Arm Lock, push the interlock button, extend the arm and lock it into
position.
5. Adjust the Telescoping Arm to the desired source-to-image distance. Use the measuring tape in the
collimator.
10