Revision B 120 Series Maternal/Fetal Monitor 10-15
2015590-001
Strip Chart Recorder Servicing: Field Serviceable Assemblies
Adjusting the Paper-Loading Sensor
1. Load paper in the recorder. (Refer to page 5-2 for proper loading instructions—
paper should feed from the top of the pack.) Ensure that there are no black
squares showing to indicate a paper-low condition. You must load at least nine
sheets of paper.
2. If you haven’t already, re-connect the power cord and turn on the monitor.
3. Using a digital voltmeter, connect the positive lead to J9 (pin 6) on the Recorder
Board; connect the negative lead to J9 (pin 2).
4. Adjust R41 for a reading of +190 mVdc ± 5 mVdc on the digital voltmeter.
5. Although a factory-only fixture is required for this step, you may wish to try it
by estimating the required distance. Load paper backwards (paper feeding from
bottom of pack) with the white surface 0.380 in away from the paper tray. This
creates a paper-loading error condition. Verify that the voltage at J9 (pin 6) on
the Recorder Board is at least +2.70 Vdc.
6. Replace the monitor top cover and secure with all nine screws.
To Next Page
Loading...
Need help?
General
