GE Amx 4 Instruction Manual

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
7-4
Table 7-2 
SAMPLE CHART FOR TECHNIQUE ACCURACY TESTSField size indicatorEvery year (Refer to Appendix 3, Direction 2173227-100, 
AMX-4+ Periodic Maintenance)
Rotational detent Every year (Refer to Section 3-4, Direction 2173224-100, 
AMX-4+ Functional Check)
Exposure tone is audible and X-ray on 
indicators light up when handswitch depressed 
to expose positionEvery year
Auxiliary items (battery charger, HV cables, etc.) Every year
Technique Selected
mAs kVp Primary Volts kVp Time (Sec.)Maintenance/Checks Frequency 
Equipment and Serial Number:
Date of Inspection: _
Maintenance Check Performed By:  
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
8-1
SECTION 8
MESSAGES ON DISPLAY
Two kinds of messages can appear on the message display on the control cover: 
status messages and error messages.
Status messages simply inform you of the operating condition of the AMX-4+, and 
look something like this.
Another type of message, called an error message, may appear should a problem 
occur with the equipment . An error message looks something like this.
Note that an error message includes an alphanumeric code, and will display one 
line at a time.
If an error message appears, follow these steps.
1 Try the function again. If the problem is corrected, and no error message is 
displayed, proceed as usual. 
2
If the error message still displays, turn the unit OFF then back ON.
•
Diagnostics or self-tests are quickly performed when the unit is turned back on.
• When diagnostics are complete, the following message displays: 
ERROR XXX
OCCURRED WHEN 
THE UNIT WAS 
LAST OPERATED -- 
PROCEED WITH 
--- CAUTION --- 
3 Now try the function once more. If the problem is corrected, and no error 
message is displayed, proceed as usual. 
4 If the problem persists, call your service representative, and report the code 
and message shown on the display. This will prepare service for the type of 
problem encountered and the service required. 
On the following pages, well list the status messages and include a brief 
explanation of each one.
READY FOR X-RAY
ERROR 100
CHARGE FAULT 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
8-2
Status MessagesDescription
AUTO CAL LIMITIf this message displays, the unit is at its automatic calibration limit . A service call is 
recommended to ensure accurate technique and radiographic results. Exposures 
are not inhibited.
BATTERY TOO HIGH 
VOLTAGE RECOVERY IS 
REQUIREDThis message may appear when attempting to take a high technique exposure 
immediately after removing the unit from charge. Exposure is prevented. Operating 
the f ield lamp or driving the AMX-4+ will assist in stabilizing the battery voltage so 
that the exposure may be made.
BATTERY TOO LOW CHARGE 
REQUIREDThis message may appear when attempting to expose while only a few segments 
remain on the battery charge indicator. Exposure is prevented. Recharging the 
batteries will eliminate the message and allow exposures.
CHARGE COMPLETEThe charge process is complete, and the battery is fully recharged.
CHARGINGThe unit is charging.
DRIVES ONLYAll modes are disabled except drive. Service is required.
HEAT WAITNo exposures can be taken while this message appears (The length of the delay will 
vary with the selected technique). This message displays while the tube anode is 
cooling.
kVp MAXDisplayed on the alphanumeric display any time an attempt is made to increase the 
kVp above 125.
kVp MINDisplayed on the alphanumeric display any time an attempt is made to decrease 
the kVp below 50.
LIGHT DISABLED FOR 
COOLINGIf the f ield light is on for over 4 minutes, the light will be automatically turned off to 
prevent the collimator from overheating. You may activate the f ield light in about 5 
minutes.
mAs MAXDisplayed on the alphanumeric display any time an attempt is made to increase the 
mAs above 320 or above the acceptable energy limit for the X-ray tube anode. The 
acceptable heat limit is based on the kVp you selected. Note that the kVp setting 
will always take precedence over the mAs setting. That is, if the technique selected 
would generate too much X-ray tube heat , the maximum mAs will automatically 
decrease to permit the selected kVp.
mAs MINDisplayed on the alphanumeric display any time an attempt is made to decrease 
the mAs below 0.40. 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
8-3
Status Messages Description
READY FOR X-RAYThe prep cycle has successfully completed, and an exposure may be taken within 
the next 30 seconds. (If an exposure is attempted after 30 seconds, the prep cycle 
must be repeated.)
RECHARGE IMMEDIATELY - 
X-RAY INHIBITEDThe estimated usable battery capacity is near 0%. No more exposures may be 
taken. Although charge is too low to complete an x-ray exam, youll have enough 
energy to drive the unit to a correctly rated wall outlet for recharge.
RECHARGE RECOMMENDEDThe remaining battery capacity is approximately 10% or less.
RELEASE HANDLEThe AMX-4+ was moving faster than the drive motors allow. Release the Drive 
Handle to clear the message, and then continue with normal operation. This may 
happen if you push the AMX-4+ too hard when driving down a ramp.
RELEASE PREP SWThe prep switch is still depressed (f ive seconds after an exposure or beyond the 
30-second timeout). If taking an exposure, repeat the prep cycle: 1) release the prep 
switch, and 2) when the message WAIT is no longer displayed, press to prep position 
again.
RESET AEC CNTROLReset the AEC controller. AEC is on, but not enabled.
For Example:
The (ON) light is flashing on the Automatic Exposure Control (AEC) unit . This 
indicates the paddle is not connected. Reset the AEC controller.
The red reset (GEN) on the Automatic Exposure Control (AEC) unit is lit . This indicates 
the back-up time is too short . Reset the AEC controller.
REVERSE ONLYForward drive is prevented because the safety bumper is in contact with another 
object . Reverse the unit before proceeding.
TESTING COMPLETEPower-up diagnostic testing is f inished.
WAITWait before taking another exposure. (Displayed when the tube anode has cooled, 
but before the battery has recovered from the previous exposure.) Although 
radiographs can be taken, because of low battery voltage they may not achieve the 
desired kVp technique accuracy.
WAIT/ACT-XX . XAfter an AEC exposure the XX.X f ield will display the actual exposure mAs.
X-RAY DISABLEDThis message appears if an attempt to make an exposure occurs while HEAT 
WA I T is displayed.
X-RAY TUBE PARKEDNo exposures can be taken with the X-ray tube in the park/transport position. 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
9-1
SECTION 9
SYMBOLS
9-1 IEC Classif ication  
In accordance with International Safety Standard IEC 601, the AMX-4+ Mobile 
X-ray Unit is classif ied as Type B Equipment , Class I Equipment , Internally Powered 
Equipment , Ordinary Equipment and continuous operation. 
Type B Equipment provides an adequate degree of protection against electric 
shock, in particular regarding:
• allowable leakage current ,
• reliability of the protective earth connection.
In accordance with International Safety Standard IEC 601, the manufacturer is not 
responsible for any consequences caused by unauthorized modif ication of this 
equipment .
This equipment is not suitable for use in the presence of flammable gas.
There are no user replaceable parts in this unit . This would include the cord reel, as 
well as any other mains or secondary part .
9-2 Earth Leakage Current
The AMX-4+ Mobile X-ray Unit complies with (Class I - Type B) standards.
9-3 Applicable IEC Symbols
Protective earth (ground). Identif ies any terminal which is intended for 
connection of an external protective conductor to protect against electrical shock 
in case of a fault .
This symbol on the equipment means that the accompanying operating 
instructions should be consulted to assure safe operation.
Dangerous voltage. Indicates an avoidable dangerous high voltage hazard.
Functional Earth (ground) Terminal. Terminal directly connected to a point of a 
measuring supply or control circuit or to a screening part which is intended to be 
earthed for functional purposes. 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
9-2
Indicates non-ionizing radiation is present .
Indicates radiographic control.
Indicates ionizing radiation is present .
X-ray emission. X-ray tube head is emitting X-rays. Take adequate precautions to 
prevent the possibility of any persons carelessly, unwisely, or unknowingly 
exposing themselves or others to radiation.
Battery power on. This does not apply mains voltage.
Battery power off. This does not remove mains voltage.
Indicates positioning lock or brake release.
Indicates terminal and receptacle location for hand-held radiographic and light 
field control. 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
9-3
Control for indicating radiation f ield by using light .
Collimator blades closed. The controlled blades are shown in thicker lines.
Collimator blades open. The controlled blades are shown in thicker lines.
Alternating Current . Indicates equipment that is suitable for alternating current 
only.
This symbol indicates that the waste of electrical and electronic equipment must 
not be disposed as unsorted municipal waste and must be collected separately. 
Please contact an authorized representative of the manufacturer for information 
concerning the decommissioning of your equipment . 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
10-1
SECTION 10
OPTIONS
10-1 Dose Area Product (DAP) Meter
Full f ield ion chamber with an integral display unit . The display unit contains 
electronics controlling total dose area product , system reset and system test .
• Provides easy to read real time information on patient dose.
• Allows for simple manual transcription of this information into patient records.
10-2 Mobil-AIDTM Automatic Exposure Control (AEC)
A fully integrated automatic exposure control option is available with the AMX-4+. 
Mobil-AIDTM further simplif ies use by automatically controlling radiographic 
exposures.
10-3 Remote Control Handswitch
AMX-4+ is available with TechSwitchTM, a cordless handswitch option that enables 
even greater procedural flexibility and radiation protection to the Technologist . 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
11-1
SECTION 11
ENVIRONMENTAL CONDITIONS
Table 11-1 
ENVIRONMENTAL CONDITIONS
System operating environmental temperature15°C to 38°C / 59°F to 100°F
Storage environmental temperature-40°C to 60°C / -40°F to 140°F
Operating ambient humidity10% to 80% relative humidity, non-condensing
Non-operating ambient humidity5% to 95% relative humidity, non-condensing
Operating ambient atmospheric pressure106.2 kPa down to 70.0 kPa (maximum rate of change 
of atmospheric pressure less than 1.8 kPa/hour)
Non-operating ambient atmospheric pressure106.2 kPa down to 50 kPa (maximum rate of change of 
atmospheric pressure less than 76 kPa/hour) 
						

							AMX-4+ OPERATION
GE Healthcare (MODEL 2169360, 2236420 & 2275938 SERIES)
REV 15 om 2166913-1EN
11-2
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