9  System maintenance
66 GE Healthcare 86500-IMG   rev 3
9.3 OPERATORS MAINTENANCE SCHEDULE
For the safe and proper operation of the unit, the following inspections
must be performed monthly (or daily or weekly if so indicated) by the
operator of the equipment.
Monthly check-up Procedure
Visual Exposure Indicator Confirm that the exposure indicator light 
stays on for the length of the exposure.
Audible Exposure Indicator Confirm that the buzzer stays on for the 
length of the exposure.
Exposure Switch Confirm that the exposure switch 
requires continuous pressing to maintain 
the exposure and that releasing of the 
switch terminates the exposure and that 
the timer display indicates “Rel”.
Warning and Indicator Labels Inspect and confirm that all warning 
labels and embossed, painted or other 
wearable labels have not been defaced 
or worn and that they are legible.
Automatic Exposure Control 
(AEC)
Confirm that the autoexp light illuminates 
when AEC is selected. A daily QA check is 
recommended. Software monitors the 
status of each detector and prevents an 
exposure with a faulty detector.
Vertical Movement Check that the carriage moves smoothly 
and in both directions.
Compression force Check that the compression force has not 
changed.
Compression release when 
power failure
Check that the compression paddle 
drives up for approximately 5 seconds 
when the mains voltage is disconnected.
Rotation Movement and angle 
display
Check that the C-Arm moves smoothly in 
all positions. Check that the displayed 
angle corresponds to the selected angle. 
Also check that +/- 15° motorized stereo 
angulation movement is functioning 
correctly.
Control Panel Check that all buttons on the control 
panel are functioning and check that all 
lights and display segments function 
immediately after turning the main 
power on.
Compression thickness 
display check
Place a 60 mm acrylic block on the 
cassette holder. Drive the compression 
paddle down against the acrylic blocks. 
Check that the thickness display indicates 
6.0 cm. If not, call for service.
X-ray field light check Switch on the x-ray field illumination light 
and check that it covers the imaging 
area.
FOR TRAINING PURPOSES ONLY! 
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