Functional Overview; Self Test - Welch Allyn Spot Vital Signs LXi Service Manual

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Functional Overview

This functional verification procedure helps to confirm the proper operation of the Spot
Vital Signs LXi and options. This procedure supports the requirements of routine
preventative maintenance. It is not necessary to disassemble the Spot Vital Signs LXi to
perform this procedure.
For the calibration procedures, see "Calibration" on page 33. If the Spot Vital Signs LXi
fails certain functional tests or a circuit board is replaced, the device may require
calibration. It is necessary to disassemble the Spot Vital Signs LXi for calibration.
Always perform this functional verification procedure after performing any calibration. This
procedure contains additional tests that are not included in calibration procedures.

Self Test

The Spot Vital Signs LXi performs a self-test each time the device is powered on. Press
the Power button to turn the device on or off. Upon each power up, the display lights up,
a beep sounds, and the Spot Vital Signs LXi displays the model and serial numbers. If the
internal self-check is successful, the display shows its normal functions (see Figure 4 on
page 17) with all values blank, and the device is ready for operation. If the self-check fails,
an error code is shown in the Navigation Window (see "Error Codes" on page 37).
Spot Vital Signs LXi automatically powers off when not used for 30 minutes.