Welch Allyn ELI 150, Руководство по обслуживанию

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ELI 150
6-8
Adjusting the Writer Cue Sensor
Note: This procedure should be performed any time the Cue Sensor or the Motherboard is replaced.
Note: This test should be performed with the AC power turned on.
1) Install paper into the unit with the cue mark approx. 1 – 2 inches away from the tear bar. Make sure that the cue
sensor is seeing white and not any markings on the paper.
2) Use a DMM to measure the DC voltage at test point P15 on the motherboard with respect to ground (P12).
Adjust R323 on the motherboard to between 1.90 V-DC and 2.10 V-DC at test point P15. Set this as close to 2.0
V-DC as possible.
3) Perform either the Writer test or print a test ECG. The paper should cue to the next sheet of paper, print and then
advance to the beginning of the next sheet of paper.
4) If the Writer test is performed the results should be compared with the test printout in this manual.
ECG Test
1.) Connect a simulator to the patient cable and connect the patient cable to the unit.
2.) Turn the unit on.
3.) Press the F1 key and enter a test patient name.
4.) Press the Auto key. The unit will acquire the ECG and depending on the units’ configuration, will print the
ECG.
5.) Verify that the printed ECG is correct for the simulated input to the unit.
CAUTION:
Dangerous voltages are present on the circuit board of the ELI 150. Caution should be taken when
connecting test equipment to the circuit board.