5-14 250cx Series Maternal/Fetal Monitor Revision C
2036947-001
Troubleshooting: Diagnostic Control Screen
5. Using an allen wrench, remove the two socket-head screws which attach the
black sensor housing to the angle bracket.
6. Discard the sensor and housing.
Replacing the Paper-Low/Paper-Out Photosensor
Use the following procedure for replacing the paper-low or paper-out photosensor:
1. Attach the sensor and housing to the printhead support bracket using the two
socket-head screws. Ensure that the black sensor housing is parallel with the top
of the printhead bracket before tightening the screws.
2. Re-connect the sensor cable using the correct orientation.
3. Adjust the respective sensor as described next in this section.
4. Replace the monitor top cover and secure with all nine screws.
Adjusting the Paper-Low Photosensor
Refer to “Recorder Photosensor Calibration” on page 4-52 for detailed
instructions.
Adjusting the Paper-Out Photosensor
Refer to “Recorder Photosensor Calibration” on page 4-52 for detailed
instructions.
Paper-Loading Sensor
Follow the instructions for “Recorder Servicing” on page 5-7 before following
this procedure:
Removing the Paper-Loading Photosensor
1. Disconnect the paper-loading sensor cable from J8 on the Recorder Board.
2. Turn over the recorder and place face down.
3. Cut and remove the cable tie which holds the sensor cable.
4. Remove the two screws which hold the sensor and housing to the paper tray.
5. Discard the sensor and printed circuit board.
Replacing the Paper-Loading Sensor
1. Use the following procedure for replacing the paper-loading photosensor:
2. Secure the sensor and printed circuit board to the paper tray and tighten both
screws.
3. Connect the sensor cable to J8 on the Recorder Board.
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