Welch Allyn Propaq Encore, Service Manual

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11
Functional Verification
Introduction
The functional verification procedures ensure proper operation of the Encore monitor and
its options. These procedures should be performed following module-level repairs,
calibration, or whenever there is a question about the accuracy or safety of the patient
functions.
Use the calibration procedures ( “Calibration” on page 33) to return the monitor to
operation within its performance specifications. If the monitor does not pass the
functional verification, or when it is time to do a routine calibration, see
“Calibration” on
page 33.
The Encore’s service menu facilitates the functional verification. It has several features for
testing and verifying the NIBP (cuff) channel, display, invasive pressure channel, and
printer. Refer to
“Overview” on page 5 for information about the Service Menu.
Self Tests
Many functions, such as alarms, waveform and scale sizing, and printer control, are
software operations. During the monitor’s power-up self-test, the integrity of all
programming is checked first. If software testing is successful, hardware tests are
initiated. If all testing is successful, the monitor is ready for use. (See
“Troubleshooting”
on page 43 for information on error messages.)
WARNING Whenever the monitor is opened for calibration or repair, a risk
(leakage) current safety check as well as a dielectric strength integrity (hi-pot) test
must be performed as described in this section.