Appendix 1; Testing Of Final Assembly - GE Healthcare Portascan Service Manual

Section 1

Appendix 1

Testing of Final Assembly

Scanner Serial No:
Interface Board Serial No:
Probe Serial No:
Instructions: Pass / fail:
Insert a charged 'test' battery pack and check that it fits securely.
Ensure that the printer door opens and closes smoothly and that the magnetic latch holds the door
securely when the door is closed.
Restrain paper and shake unit and ensure that there are no loose parts inside.
Unplug the probe from the unit by pulling on the release ring on the plug and ensure that
there is no damage to the connector on the unit or the probe plug. Plug the probe in and check
that it clicks securely in place.
Plug a standard PC keyboard into the appropriate socket on the back of the unit. Switch the unit
on by pressing the red power button & wait for the unit to start up.
Hold down 'Alt'& 'Shift'& 'Control' then press 'W' very briefly to disable the Interface board
watchdog timer. Switch off by pressing the red button and wait for the unit to power down.
Remove the keyboard and switch the unit back on by pressing the red button. Wait for the unit
to start up.
Press the display brightness button several times and ensure that the display brightness toggles
between its high and low setting.
Press the menu button and check that the menu options are displayed.
Using the "UP", "DOWN" menu buttons select the "Date/Time" option and then press the
"SELECT" button. Press the "SELECT" button again to select the "Set Date" option. Check that the
correct date is displayed. If the incorrect date is displayed then set the correct date by using the
"UP", "DOWN" and "TAB" menu buttons and lock the setting by pressing the "SELECT" button.
Press the menu button. Using the "UP", "DOWN" menu buttons select the "Date/Time" option and
then press the "SELECT" button. Press the "DOWN" button and then the "SELECT" button to select
the "Set Time" option. Check that the correct time is displayed. If the incorrect time is displayed
then set the correct time by using the "UP", "DOWN" and "TAB" menu buttons and lock the setting
by pressing the "SELECT" button.
Press the menu button. Using the "UP", "DOWN" menu buttons select the "Set Probe Frequency"
option and then press the "SELECT" button. Press the "DOWN" button and then the "SELECT"
button to select the "5Mhz" option. The unit will switch to 5Mhz operation and "5Mhz" will be
displayed at the top of the display.
Press the green button to start scanning.
Align the probe on a phantom bladder so the largest section of the phantom can be seen
on the display. Press the magnification button repeatedly so that the unit cycles through all
levels of magnification then set the magnification so that the phantom fills the display but does
not overlap the edges of the scan sector.
Press the green scan button to record the reading. Check that the reading is within tolerance
(+ or - 10% of indicated phantom volume).
Press the print button to obtain a hard copy of the result.
Press the sagittal scan button and rotate the probe 90 degrees from the position of the first
scan and obtain the largest section and press the sagittal scan button again to obtain the reading.
Mediwatch Service Department
12
Service Documentation